WUJin-xie,GUOQing-ling,XUTing,et al.Design of a Sludge Deep Dewatering Project Utilizing Conditioning and Plate Frame Pressure Filtration[J].China Water & Wastewater,2025,41(2):64-68.
污泥调理/板框压滤深度脱水工程设计
- Title:
- Design of a Sludge Deep Dewatering Project Utilizing Conditioning and Plate Frame Pressure Filtration
- Keywords:
- sludge; chemical conditioning; plate frame pressure filtration; sludge deep dewatering; sludge reduction
- 摘要:
- 杭州市七格污水处理厂设计处理规模为150×104 m3/d，污泥产量约1 600 t/d（含水率为80%），为解决污泥处理能力存在较大缺口的问题，实施了污泥处理提升工程。采用化学调理和板框压滤的方式进行污泥深度脱水，脱水后可通过焚烧、建材利用等处置方式，有效实现污泥的减量化、稳定化、无害化、资源化。目前，该工程运行稳定，出泥含水率可控制在50%以下，污泥减量50%以上，其设计和运行经验具有一定的借鉴意义。
- Abstract:
- The designed treatment capacity of Qige wastewater treatment plant in Hangzhou is 150×104 m3/d, with sludge output of approximately 1 600 t/d (sludge moisture content of 80%). To address the significant disparity in sludge processing capability, the sludge treatment upgrading project was initiated. The sludge underwent dewatering through chemical conditioning followed by plate and frame pressure filtration. After dewatering, sludge could be managed through methods such as incineration or utilization in building materials, effectively achieving the goals of reduction, stabilization, harmlessness, and resource recovery. Currently, the project’s operation is stable, with the sludge water content always below 50%, and a sludge reduction exceeding 50%. The design and operational experience hold significant reference value.
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