SUNWei,ZHAOHong-bing.Design of Wuhan Huangxiao River Combined Sewer Overflow Enhanced Treatment Facility[J].China Water & Wastewater,2022,38(10):101-105.
武汉市黄孝河合流制溢流强化处理设施工艺设计
- Title:
- Design of Wuhan Huangxiao River Combined Sewer Overflow Enhanced Treatment Facility
- Keywords:
- combined sewer overflow pollution; high efficient sedimentation tank; intermittent operation; ion deodorization
- 摘要:
- 武汉市黄孝河合流制溢流强化处理设施用于处理雨季时发生在黄孝河明渠起端的合流制溢流污水，运行模式为间歇运行，设计规模6 m3/s。采用细格栅、曝气沉砂池、高效沉淀池、精密过滤设备、紫外消毒等物化为主的污水处理工艺，使用了可高效处理无机质污泥的带式浓缩脱水一体机对厂区剩余污泥进行减量化。工艺方案中充分考虑了间歇运行模式下的运行及维护需求，进行了高效沉淀池出水的自循环及便于全厂设施运维的放空等特别设计。对厂区的自产水进行了生产回用，可节约水资源，降低运行费用。采用离子除臭工艺对产臭单体的臭气进行处理，达标后排放，同时进行了屋顶花园等高标准绿化设计，工程环境友好。
- Abstract:
- The Wuhan Huangxiao River combined sewer overflow (CSO) enhanced treatment facility with intermittent operation mode is applied to treat the combined sewer overflow collected at the beginning of Huangxiao River open channel in the rainy season. The design scale of the facility is 6 m3/s. It adopts physical?chemical wastewater treatment processes such as fine grid, aerated grit chamber, high efficient sedimentation tank, precision filtration equipment, ultraviolet disinfection, and a belt thickening and dewatering machine which can efficiently deal with inorganic sludge is selected to reduce the excess sludge in the plant. In the design scheme, the operation and maintenance requirements under intermittent operation mode were fully considered, and special designs such as self-circulation of the effluent from the high efficient sedimentation tank and venting for the operation and maintenance convenience of the whole plant facilities were carried out. The tail water in the plant was recycled to save water resources and reduce the operating cost. The odor of odorous monomer was treated by ion deodorization process and emitted after reaching the emission standard. In addition, the high?standard greening design such as roof garden was adopted, making the project environment-friendly.
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