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Sewer Sludge Feeding Unit

Sewer Sludge Unit

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<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">1. Brief Introduction</h2>To maintain smooth operation of drainage pipe networks, regular dredging is required to remove massive sedimentary waste accumulated inside pipelines. Such waste is collectively defined as sewer pipeline sediment, commonly known as sewer sludge.<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">2. Current Status of Sewer Sludge Treatment</h2>Sewer sludge refers to deposits collected during drainage pipeline maintenance and dredging. It features complex compositions, being a mixture of domestic waste, muck, gravel, organic sludge and wastewater.If sewer sludge inside urban pipe networks is not cleared timely, it will easily cause poor drainage, urban waterlogging and sewage overflow. Moreover, sedimentary sludge will flow into rivers along with rainwater in rainy days, triggering severe water pollution with massive hazards.As pipeline maintenance gains growing public attention, the output of sewer sludge keeps rising year by year. Storage and disposal of massive sewer sludge have become a tough challenge.The prevailing conventional method is to air-dry dredged sludge on nearby green belts before transporting it to landfills for direct burial. This approach not only pollutes the green space surrounding pipelines, but also faces rejection from landfills. Due to sewer sludge’s complex composition and fluctuating moisture content, most landfills no longer accept raw sewer sludge for direct landfilling.With continuous expansion of urban drainage networks, daily sewer sludge output will surge sharply, further intensifying disposal conflicts. New effective disposal technologies are urgently needed.<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">3. Core Equipment</h2>Key equipment adopted in the sewer sludge treatment system includes:<ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Feeding Unit: Realizes quantitative conveying of raw sewer sludge;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Washing Drum Unit: Separates coarse debris larger than 6~10 mm from sludge;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Sand Washing Unit: Extracts fine sand with particle size of 0.2~6 mm, with a removal efficiency over 90%. The washed sand has a loss on ignition (LOI) below 3%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Fine Screening Unit: Sorts organic particles sized 2~6 mm;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Fine Sand Sedimentation Tank: Separates sand, gravel and grease from sludge via high-efficiency sedimentation, intercepting all particles above 0.075 mm;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Ultra-fine Sand Washing & Classification Unit: Extracts ultra-fine sand of 0.075~0.2 mm from sewer sludge, with loss on ignition less than 3%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Screw Press Dehydrator: Performs subsequent sludge dewatering, raising sludge solid content to 18~24%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Reclaimed Water System: Treats and recycles flushing water to reduce system wastewater discharge, saving around 500 tons of water per day.</li></ol><h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">4. Treatment Solution</h2>The dry solids of sewer sludge contain low organic matter, with an average organic content of only 17.2%, while inorganic ash accounts for 82.8%. This indicates sewer sludge is dominated by inorganic, non-combustible components.Sewer sludge has a moisture content of approximately 70% and a pH range of 7.1–8.5, averaging at 8.0.Therefore, the core of sewer sludge treatment is multi-stage classification. Via pre-treatment processes including screening, washing and filtration, raw sludge is separated into four streams: coarse waste, sand & gravel, organic particles and recyclable wastewater for subsequent treatment.<ul style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Separated coarse waste is delivered to solid waste treatment facilities for further disposal and resource recovery;</li><li>Sand and gravel with particle size 0.075~6 mm can be recycled as low-grade construction aggregates after washing, with organic content reduced below 3%;</li><li>Screened organic residues of 2~6 mm are applicable for sludge composting;</li><li>Filtered wastewater can be conveyed back to municipal wastewater treatment plants, or further purified to serve as equipment flushing water for the sewer sludge treatment line;</li><li>Residual sludge after separation can be directly dewatered and transported off-site for final disposal.</li></ul><h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">5. Screened Fractions</h2>The screening process separates materials into five grading levels:<ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Grade 1: Bulk debris over 100 mm</li><li>Grade 2: Coarse particles over 6 mm</li><li>Grade 3: Organic particles of 2~6 mm</li><li>Grade 4: Sand & gravel of 0.2~6 mm</li><li>Grade 5: Ultra-fine sand of 0.075~0.2 mm</li></ol>Wastewater is recycled after treatment by the reclaimed water unit; waste gas is treated by deodorization systems to meet emission standards before discharge.<hr style="color: rgb(0, 0, 0); font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; white-space: normal; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box; border-width: 1px 0px 0px; border-style: solid; border-color: rgb(0, 0, 0);"/><h3 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Key Industry Terminology Notes</h3><ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Sewer Sludge: Standard international term for 通沟污泥 / 管渠污泥 (avoid literal translation pipeline sludge)</li><li>Loss on Ignition (LOI): 有机烧失率，universal lab abbreviation in environmental engineering</li><li>Screw Press Dehydrator: 叠螺污泥脱水机，globally recognized industry name</li><li>Reclaimed Water System: 回用水机，standard expression for industrial water recycling equipment</li><li>Landfill: 垃圾填埋场，municipal environmental engineering fixed term</li><li>pH / Moisture Content / Solid Content: Retain original engineering parameter units, consistent with overseas technical documents</li></ol>
Sewer Sludge Treatment Unit

Sewer Sludge Unit

市场价:￥0.00

价格:￥0.00

<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">1. Brief Introduction</h2>To maintain smooth operation of drainage pipe networks, regular dredging is required to remove massive sedimentary waste accumulated inside pipelines. Such waste is collectively defined as sewer pipeline sediment, commonly known as sewer sludge.<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">2. Current Status of Sewer Sludge Treatment</h2>Sewer sludge refers to deposits collected during drainage pipeline maintenance and dredging. It features complex compositions, being a mixture of domestic waste, muck, gravel, organic sludge and wastewater.If sewer sludge inside urban pipe networks is not cleared timely, it will easily cause poor drainage, urban waterlogging and sewage overflow. Moreover, sedimentary sludge will flow into rivers along with rainwater in rainy days, triggering severe water pollution with massive hazards.As pipeline maintenance gains growing public attention, the output of sewer sludge keeps rising year by year. Storage and disposal of massive sewer sludge have become a tough challenge.The prevailing conventional method is to air-dry dredged sludge on nearby green belts before transporting it to landfills for direct burial. This approach not only pollutes the green space surrounding pipelines, but also faces rejection from landfills. Due to sewer sludge’s complex composition and fluctuating moisture content, most landfills no longer accept raw sewer sludge for direct landfilling.With continuous expansion of urban drainage networks, daily sewer sludge output will surge sharply, further intensifying disposal conflicts. New effective disposal technologies are urgently needed.<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">3. Core Equipment</h2>Key equipment adopted in the sewer sludge treatment system includes:<ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Feeding Unit: Realizes quantitative conveying of raw sewer sludge;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Washing Drum Unit: Separates coarse debris larger than 6~10 mm from sludge;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Sand Washing Unit: Extracts fine sand with particle size of 0.2~6 mm, with a removal efficiency over 90%. The washed sand has a loss on ignition (LOI) below 3%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Fine Screening Unit: Sorts organic particles sized 2~6 mm;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Fine Sand Sedimentation Tank: Separates sand, gravel and grease from sludge via high-efficiency sedimentation, intercepting all particles above 0.075 mm;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Ultra-fine Sand Washing & Classification Unit: Extracts ultra-fine sand of 0.075~0.2 mm from sewer sludge, with loss on ignition less than 3%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Screw Press Dehydrator: Performs subsequent sludge dewatering, raising sludge solid content to 18~24%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Reclaimed Water System: Treats and recycles flushing water to reduce system wastewater discharge, saving around 500 tons of water per day.</li></ol><h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">4. Treatment Solution</h2>The dry solids of sewer sludge contain low organic matter, with an average organic content of only 17.2%, while inorganic ash accounts for 82.8%. This indicates sewer sludge is dominated by inorganic, non-combustible components.Sewer sludge has a moisture content of approximately 70% and a pH range of 7.1–8.5, averaging at 8.0.Therefore, the core of sewer sludge treatment is multi-stage classification. Via pre-treatment processes including screening, washing and filtration, raw sludge is separated into four streams: coarse waste, sand & gravel, organic particles and recyclable wastewater for subsequent treatment.<ul style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Separated coarse waste is delivered to solid waste treatment facilities for further disposal and resource recovery;</li><li>Sand and gravel with particle size 0.075~6 mm can be recycled as low-grade construction aggregates after washing, with organic content reduced below 3%;</li><li>Screened organic residues of 2~6 mm are applicable for sludge composting;</li><li>Filtered wastewater can be conveyed back to municipal wastewater treatment plants, or further purified to serve as equipment flushing water for the sewer sludge treatment line;</li><li>Residual sludge after separation can be directly dewatered and transported off-site for final disposal.</li></ul><h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">5. Screened Fractions</h2>The screening process separates materials into five grading levels:<ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Grade 1: Bulk debris over 100 mm</li><li>Grade 2: Coarse particles over 6 mm</li><li>Grade 3: Organic particles of 2~6 mm</li><li>Grade 4: Sand & gravel of 0.2~6 mm</li><li>Grade 5: Ultra-fine sand of 0.075~0.2 mm</li></ol>Wastewater is recycled after treatment by the reclaimed water unit; waste gas is treated by deodorization systems to meet emission standards before discharge.<hr style="color: rgb(0, 0, 0); font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; white-space: normal; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box; border-width: 1px 0px 0px; border-style: solid; border-color: rgb(0, 0, 0);"/><h3 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Key Industry Terminology Notes</h3><ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Sewer Sludge: Standard international term for 通沟污泥 / 管渠污泥 (avoid literal translation pipeline sludge)</li><li>Loss on Ignition (LOI): 有机烧失率，universal lab abbreviation in environmental engineering</li><li>Screw Press Dehydrator: 叠螺污泥脱水机，globally recognized industry name</li><li>Reclaimed Water System: 回用水机，standard expression for industrial water recycling equipment</li><li>Landfill: 垃圾填埋场，municipal environmental engineering fixed term</li><li>pH / Moisture Content / Solid Content: Retain original engineering parameter units, consistent with overseas technical documents</li></ol>
Sewer Sludge Treatment Unit

Sewer Sludge Unit

市场价:￥0.00

价格:￥0.00

<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">1. Brief Introduction</h2>To maintain smooth operation of drainage pipe networks, regular dredging is required to remove massive sedimentary waste accumulated inside pipelines. Such waste is collectively defined as sewer pipeline sediment, commonly known as sewer sludge.<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">2. Current Status of Sewer Sludge Treatment</h2>Sewer sludge refers to deposits collected during drainage pipeline maintenance and dredging. It features complex compositions, being a mixture of domestic waste, muck, gravel, organic sludge and wastewater.If sewer sludge inside urban pipe networks is not cleared timely, it will easily cause poor drainage, urban waterlogging and sewage overflow. Moreover, sedimentary sludge will flow into rivers along with rainwater in rainy days, triggering severe water pollution with massive hazards.As pipeline maintenance gains growing public attention, the output of sewer sludge keeps rising year by year. Storage and disposal of massive sewer sludge have become a tough challenge.The prevailing conventional method is to air-dry dredged sludge on nearby green belts before transporting it to landfills for direct burial. This approach not only pollutes the green space surrounding pipelines, but also faces rejection from landfills. Due to sewer sludge’s complex composition and fluctuating moisture content, most landfills no longer accept raw sewer sludge for direct landfilling.With continuous expansion of urban drainage networks, daily sewer sludge output will surge sharply, further intensifying disposal conflicts. New effective disposal technologies are urgently needed.<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">3. Core Equipment</h2>Key equipment adopted in the sewer sludge treatment system includes:<ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Feeding Unit: Realizes quantitative conveying of raw sewer sludge;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Washing Drum Unit: Separates coarse debris larger than 6~10 mm from sludge;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Sand Washing Unit: Extracts fine sand with particle size of 0.2~6 mm, with a removal efficiency over 90%. The washed sand has a loss on ignition (LOI) below 3%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Fine Screening Unit: Sorts organic particles sized 2~6 mm;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Fine Sand Sedimentation Tank: Separates sand, gravel and grease from sludge via high-efficiency sedimentation, intercepting all particles above 0.075 mm;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Ultra-fine Sand Washing & Classification Unit: Extracts ultra-fine sand of 0.075~0.2 mm from sewer sludge, with loss on ignition less than 3%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Screw Press Dehydrator: Performs subsequent sludge dewatering, raising sludge solid content to 18~24%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Reclaimed Water System: Treats and recycles flushing water to reduce system wastewater discharge, saving around 500 tons of water per day.</li></ol><h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">4. Treatment Solution</h2>The dry solids of sewer sludge contain low organic matter, with an average organic content of only 17.2%, while inorganic ash accounts for 82.8%. This indicates sewer sludge is dominated by inorganic, non-combustible components.Sewer sludge has a moisture content of approximately 70% and a pH range of 7.1–8.5, averaging at 8.0.Therefore, the core of sewer sludge treatment is multi-stage classification. Via pre-treatment processes including screening, washing and filtration, raw sludge is separated into four streams: coarse waste, sand & gravel, organic particles and recyclable wastewater for subsequent treatment.<ul style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Separated coarse waste is delivered to solid waste treatment facilities for further disposal and resource recovery;</li><li>Sand and gravel with particle size 0.075~6 mm can be recycled as low-grade construction aggregates after washing, with organic content reduced below 3%;</li><li>Screened organic residues of 2~6 mm are applicable for sludge composting;</li><li>Filtered wastewater can be conveyed back to municipal wastewater treatment plants, or further purified to serve as equipment flushing water for the sewer sludge treatment line;</li><li>Residual sludge after separation can be directly dewatered and transported off-site for final disposal.</li></ul><h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">5. Screened Fractions</h2>The screening process separates materials into five grading levels:<ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Grade 1: Bulk debris over 100 mm</li><li>Grade 2: Coarse particles over 6 mm</li><li>Grade 3: Organic particles of 2~6 mm</li><li>Grade 4: Sand & gravel of 0.2~6 mm</li><li>Grade 5: Ultra-fine sand of 0.075~0.2 mm</li></ol>Wastewater is recycled after treatment by the reclaimed water unit; waste gas is treated by deodorization systems to meet emission standards before discharge.<hr style="color: rgb(0, 0, 0); font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; white-space: normal; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box; border-width: 1px 0px 0px; border-style: solid; border-color: rgb(0, 0, 0);"/><h3 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Key Industry Terminology Notes</h3><ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Sewer Sludge: Standard international term for 通沟污泥 / 管渠污泥 (avoid literal translation pipeline sludge)</li><li>Loss on Ignition (LOI): 有机烧失率，universal lab abbreviation in environmental engineering</li><li>Screw Press Dehydrator: 叠螺污泥脱水机，globally recognized industry name</li><li>Reclaimed Water System: 回用水机，standard expression for industrial water recycling equipment</li><li>Landfill: 垃圾填埋场，municipal environmental engineering fixed term</li><li>pH / Moisture Content / Solid Content: Retain original engineering parameter units, consistent with overseas technical documents</li></ol>
Sewer Sludge Treatment Unit

Sewer Sludge Unit

市场价:￥0.00

价格:￥0.00

<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">1. Brief Introduction</h2>To maintain smooth operation of drainage pipe networks, regular dredging is required to remove massive sedimentary waste accumulated inside pipelines. Such waste is collectively defined as sewer pipeline sediment, commonly known as sewer sludge.<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">2. Current Status of Sewer Sludge Treatment</h2>Sewer sludge refers to deposits collected during drainage pipeline maintenance and dredging. It features complex compositions, being a mixture of domestic waste, muck, gravel, organic sludge and wastewater.If sewer sludge inside urban pipe networks is not cleared timely, it will easily cause poor drainage, urban waterlogging and sewage overflow. Moreover, sedimentary sludge will flow into rivers along with rainwater in rainy days, triggering severe water pollution with massive hazards.As pipeline maintenance gains growing public attention, the output of sewer sludge keeps rising year by year. Storage and disposal of massive sewer sludge have become a tough challenge.The prevailing conventional method is to air-dry dredged sludge on nearby green belts before transporting it to landfills for direct burial. This approach not only pollutes the green space surrounding pipelines, but also faces rejection from landfills. Due to sewer sludge’s complex composition and fluctuating moisture content, most landfills no longer accept raw sewer sludge for direct landfilling.With continuous expansion of urban drainage networks, daily sewer sludge output will surge sharply, further intensifying disposal conflicts. New effective disposal technologies are urgently needed.<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">3. Core Equipment</h2>Key equipment adopted in the sewer sludge treatment system includes:<ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Feeding Unit: Realizes quantitative conveying of raw sewer sludge;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Washing Drum Unit: Separates coarse debris larger than 6~10 mm from sludge;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Sand Washing Unit: Extracts fine sand with particle size of 0.2~6 mm, with a removal efficiency over 90%. The washed sand has a loss on ignition (LOI) below 3%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Fine Screening Unit: Sorts organic particles sized 2~6 mm;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Fine Sand Sedimentation Tank: Separates sand, gravel and grease from sludge via high-efficiency sedimentation, intercepting all particles above 0.075 mm;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Ultra-fine Sand Washing & Classification Unit: Extracts ultra-fine sand of 0.075~0.2 mm from sewer sludge, with loss on ignition less than 3%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Screw Press Dehydrator: Performs subsequent sludge dewatering, raising sludge solid content to 18~24%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Reclaimed Water System: Treats and recycles flushing water to reduce system wastewater discharge, saving around 500 tons of water per day.</li></ol><h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">4. Treatment Solution</h2>The dry solids of sewer sludge contain low organic matter, with an average organic content of only 17.2%, while inorganic ash accounts for 82.8%. This indicates sewer sludge is dominated by inorganic, non-combustible components.Sewer sludge has a moisture content of approximately 70% and a pH range of 7.1–8.5, averaging at 8.0.Therefore, the core of sewer sludge treatment is multi-stage classification. Via pre-treatment processes including screening, washing and filtration, raw sludge is separated into four streams: coarse waste, sand & gravel, organic particles and recyclable wastewater for subsequent treatment.<ul style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Separated coarse waste is delivered to solid waste treatment facilities for further disposal and resource recovery;</li><li>Sand and gravel with particle size 0.075~6 mm can be recycled as low-grade construction aggregates after washing, with organic content reduced below 3%;</li><li>Screened organic residues of 2~6 mm are applicable for sludge composting;</li><li>Filtered wastewater can be conveyed back to municipal wastewater treatment plants, or further purified to serve as equipment flushing water for the sewer sludge treatment line;</li><li>Residual sludge after separation can be directly dewatered and transported off-site for final disposal.</li></ul><h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">5. Screened Fractions</h2>The screening process separates materials into five grading levels:<ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Grade 1: Bulk debris over 100 mm</li><li>Grade 2: Coarse particles over 6 mm</li><li>Grade 3: Organic particles of 2~6 mm</li><li>Grade 4: Sand & gravel of 0.2~6 mm</li><li>Grade 5: Ultra-fine sand of 0.075~0.2 mm</li></ol>Wastewater is recycled after treatment by the reclaimed water unit; waste gas is treated by deodorization systems to meet emission standards before discharge.<hr style="color: rgb(0, 0, 0); font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; white-space: normal; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box; border-width: 1px 0px 0px; border-style: solid; border-color: rgb(0, 0, 0);"/><h3 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Key Industry Terminology Notes</h3><ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Sewer Sludge: Standard international term for 通沟污泥 / 管渠污泥 (avoid literal translation pipeline sludge)</li><li>Loss on Ignition (LOI): 有机烧失率，universal lab abbreviation in environmental engineering</li><li>Screw Press Dehydrator: 叠螺污泥脱水机，globally recognized industry name</li><li>Reclaimed Water System: 回用水机，standard expression for industrial water recycling equipment</li><li>Landfill: 垃圾填埋场，municipal environmental engineering fixed term</li><li>pH / Moisture Content / Solid Content: Retain original engineering parameter units, consistent with overseas technical documents</li></ol>
Sewer Sludge Treatment Unit

Sewer Sludge Unit

市场价:￥0.00

价格:￥0.00

<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">1. Brief Introduction</h2>To maintain smooth operation of drainage pipe networks, regular dredging is required to remove massive sedimentary waste accumulated inside pipelines. Such waste is collectively defined as sewer pipeline sediment, commonly known as sewer sludge.<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">2. Current Status of Sewer Sludge Treatment</h2>Sewer sludge refers to deposits collected during drainage pipeline maintenance and dredging. It features complex compositions, being a mixture of domestic waste, muck, gravel, organic sludge and wastewater.If sewer sludge inside urban pipe networks is not cleared timely, it will easily cause poor drainage, urban waterlogging and sewage overflow. Moreover, sedimentary sludge will flow into rivers along with rainwater in rainy days, triggering severe water pollution with massive hazards.As pipeline maintenance gains growing public attention, the output of sewer sludge keeps rising year by year. Storage and disposal of massive sewer sludge have become a tough challenge.The prevailing conventional method is to air-dry dredged sludge on nearby green belts before transporting it to landfills for direct burial. This approach not only pollutes the green space surrounding pipelines, but also faces rejection from landfills. Due to sewer sludge’s complex composition and fluctuating moisture content, most landfills no longer accept raw sewer sludge for direct landfilling.With continuous expansion of urban drainage networks, daily sewer sludge output will surge sharply, further intensifying disposal conflicts. New effective disposal technologies are urgently needed.<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">3. Core Equipment</h2>Key equipment adopted in the sewer sludge treatment system includes:<ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Feeding Unit: Realizes quantitative conveying of raw sewer sludge;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Washing Drum Unit: Separates coarse debris larger than 6~10 mm from sludge;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Sand Washing Unit: Extracts fine sand with particle size of 0.2~6 mm, with a removal efficiency over 90%. The washed sand has a loss on ignition (LOI) below 3%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Fine Screening Unit: Sorts organic particles sized 2~6 mm;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Fine Sand Sedimentation Tank: Separates sand, gravel and grease from sludge via high-efficiency sedimentation, intercepting all particles above 0.075 mm;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Ultra-fine Sand Washing & Classification Unit: Extracts ultra-fine sand of 0.075~0.2 mm from sewer sludge, with loss on ignition less than 3%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Screw Press Dehydrator: Performs subsequent sludge dewatering, raising sludge solid content to 18~24%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Reclaimed Water System: Treats and recycles flushing water to reduce system wastewater discharge, saving around 500 tons of water per day.</li></ol><h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">4. Treatment Solution</h2>The dry solids of sewer sludge contain low organic matter, with an average organic content of only 17.2%, while inorganic ash accounts for 82.8%. This indicates sewer sludge is dominated by inorganic, non-combustible components.Sewer sludge has a moisture content of approximately 70% and a pH range of 7.1–8.5, averaging at 8.0.Therefore, the core of sewer sludge treatment is multi-stage classification. Via pre-treatment processes including screening, washing and filtration, raw sludge is separated into four streams: coarse waste, sand & gravel, organic particles and recyclable wastewater for subsequent treatment.<ul style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Separated coarse waste is delivered to solid waste treatment facilities for further disposal and resource recovery;</li><li>Sand and gravel with particle size 0.075~6 mm can be recycled as low-grade construction aggregates after washing, with organic content reduced below 3%;</li><li>Screened organic residues of 2~6 mm are applicable for sludge composting;</li><li>Filtered wastewater can be conveyed back to municipal wastewater treatment plants, or further purified to serve as equipment flushing water for the sewer sludge treatment line;</li><li>Residual sludge after separation can be directly dewatered and transported off-site for final disposal.</li></ul><h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">5. Screened Fractions</h2>The screening process separates materials into five grading levels:<ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Grade 1: Bulk debris over 100 mm</li><li>Grade 2: Coarse particles over 6 mm</li><li>Grade 3: Organic particles of 2~6 mm</li><li>Grade 4: Sand & gravel of 0.2~6 mm</li><li>Grade 5: Ultra-fine sand of 0.075~0.2 mm</li></ol>Wastewater is recycled after treatment by the reclaimed water unit; waste gas is treated by deodorization systems to meet emission standards before discharge.<hr style="color: rgb(0, 0, 0); font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; white-space: normal; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box; border-width: 1px 0px 0px; border-style: solid; border-color: rgb(0, 0, 0);"/><h3 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Key Industry Terminology Notes</h3><ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Sewer Sludge: Standard international term for 通沟污泥 / 管渠污泥 (avoid literal translation pipeline sludge)</li><li>Loss on Ignition (LOI): 有机烧失率，universal lab abbreviation in environmental engineering</li><li>Screw Press Dehydrator: 叠螺污泥脱水机，globally recognized industry name</li><li>Reclaimed Water System: 回用水机，standard expression for industrial water recycling equipment</li><li>Landfill: 垃圾填埋场，municipal environmental engineering fixed term</li><li>pH / Moisture Content / Solid Content: Retain original engineering parameter units, consistent with overseas technical documents</li></ol>
Sewer Sludge Treatment Unit

Sewer Sludge Unit

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<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">1. Brief Introduction</h2>To maintain smooth operation of drainage pipe networks, regular dredging is required to remove massive sedimentary waste accumulated inside pipelines. Such waste is collectively defined as sewer pipeline sediment, commonly known as sewer sludge.<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">2. Current Status of Sewer Sludge Treatment</h2>Sewer sludge refers to deposits collected during drainage pipeline maintenance and dredging. It features complex compositions, being a mixture of domestic waste, muck, gravel, organic sludge and wastewater.If sewer sludge inside urban pipe networks is not cleared timely, it will easily cause poor drainage, urban waterlogging and sewage overflow. Moreover, sedimentary sludge will flow into rivers along with rainwater in rainy days, triggering severe water pollution with massive hazards.As pipeline maintenance gains growing public attention, the output of sewer sludge keeps rising year by year. Storage and disposal of massive sewer sludge have become a tough challenge.The prevailing conventional method is to air-dry dredged sludge on nearby green belts before transporting it to landfills for direct burial. This approach not only pollutes the green space surrounding pipelines, but also faces rejection from landfills. Due to sewer sludge’s complex composition and fluctuating moisture content, most landfills no longer accept raw sewer sludge for direct landfilling.With continuous expansion of urban drainage networks, daily sewer sludge output will surge sharply, further intensifying disposal conflicts. New effective disposal technologies are urgently needed.<h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">3. Core Equipment</h2>Key equipment adopted in the sewer sludge treatment system includes:<ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Feeding Unit: Realizes quantitative conveying of raw sewer sludge;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Washing Drum Unit: Separates coarse debris larger than 6~10 mm from sludge;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Sand Washing Unit: Extracts fine sand with particle size of 0.2~6 mm, with a removal efficiency over 90%. The washed sand has a loss on ignition (LOI) below 3%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Fine Screening Unit: Sorts organic particles sized 2~6 mm;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Fine Sand Sedimentation Tank: Separates sand, gravel and grease from sludge via high-efficiency sedimentation, intercepting all particles above 0.075 mm;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Ultra-fine Sand Washing & Classification Unit: Extracts ultra-fine sand of 0.075~0.2 mm from sewer sludge, with loss on ignition less than 3%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Screw Press Dehydrator: Performs subsequent sludge dewatering, raising sludge solid content to 18~24%;</li><li><span style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Reclaimed Water System: Treats and recycles flushing water to reduce system wastewater discharge, saving around 500 tons of water per day.</li></ol><h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">4. Treatment Solution</h2>The dry solids of sewer sludge contain low organic matter, with an average organic content of only 17.2%, while inorganic ash accounts for 82.8%. This indicates sewer sludge is dominated by inorganic, non-combustible components.Sewer sludge has a moisture content of approximately 70% and a pH range of 7.1–8.5, averaging at 8.0.Therefore, the core of sewer sludge treatment is multi-stage classification. Via pre-treatment processes including screening, washing and filtration, raw sludge is separated into four streams: coarse waste, sand & gravel, organic particles and recyclable wastewater for subsequent treatment.<ul style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Separated coarse waste is delivered to solid waste treatment facilities for further disposal and resource recovery;</li><li>Sand and gravel with particle size 0.075~6 mm can be recycled as low-grade construction aggregates after washing, with organic content reduced below 3%;</li><li>Screened organic residues of 2~6 mm are applicable for sludge composting;</li><li>Filtered wastewater can be conveyed back to municipal wastewater treatment plants, or further purified to serve as equipment flushing water for the sewer sludge treatment line;</li><li>Residual sludge after separation can be directly dewatered and transported off-site for final disposal.</li></ul><h2 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">5. Screened Fractions</h2>The screening process separates materials into five grading levels:<ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Grade 1: Bulk debris over 100 mm</li><li>Grade 2: Coarse particles over 6 mm</li><li>Grade 3: Organic particles of 2~6 mm</li><li>Grade 4: Sand & gravel of 0.2~6 mm</li><li>Grade 5: Ultra-fine sand of 0.075~0.2 mm</li></ol>Wastewater is recycled after treatment by the reclaimed water unit; waste gas is treated by deodorization systems to meet emission standards before discharge.<hr style="color: rgb(0, 0, 0); font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; white-space: normal; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box; border-width: 1px 0px 0px; border-style: solid; border-color: rgb(0, 0, 0);"/><h3 style="font: 400 16px / 24px ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; margin: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;">Key Industry Terminology Notes</h3><ol style="font-style: normal; font-variant: normal; font-size-adjust: none; font-language-override: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-family: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; line-height: 24px; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; background-image: none; background-position: 0% 0%; background-size: auto; background-repeat: repeat; background-attachment: scroll; background-origin: padding-box; background-clip: border-box;" class=" list-paddingleft-2"><li>Sewer Sludge: Standard international term for 通沟污泥 / 管渠污泥 (avoid literal translation pipeline sludge)</li><li>Loss on Ignition (LOI): 有机烧失率，universal lab abbreviation in environmental engineering</li><li>Screw Press Dehydrator: 叠螺污泥脱水机，globally recognized industry name</li><li>Reclaimed Water System: 回用水机，standard expression for industrial water recycling equipment</li><li>Landfill: 垃圾填埋场，municipal environmental engineering fixed term</li><li>pH / Moisture Content / Solid Content: Retain original engineering parameter units, consistent with overseas technical documents</li></ol>