LIUJin-xing,HUBang,CHENGMing-tao.Process Design of Wastewater Treatment Plant under Land Constraint[J].China Water & Wastewater,2024,40(22):58-62.
紧凑用地的污水处理厂工艺设计
- Title:
- Process Design of Wastewater Treatment Plant under Land Constraint
- 摘要:
- 江苏省某污水处理厂四期扩建工程总设计规模为5.0×104 m3/d，生化处理采用“Bardenpho生化池+二沉池”工艺，深度处理采用“反硝化滤池+高效沉淀池+紫外线消毒”工艺，设计出水水质执行《太湖地区城镇污水处理厂及重点工业行业主要水污染物排放限值》（DB 32/1072—2018）中表2的标准，其中COD≤41 mg/L。该工程将生化池、二沉池、污泥泵房、二级提升泵房合建，将反硝化滤池、反洗风机房、反洗废水池合建，并在高效沉淀池中投加微砂，提高处理负荷，大大减少了污水厂占地面积，解决了污水厂用地紧张的问题。
- Abstract:
- The total design capacity of the phase Ⅳ expansion project in a wastewater treatment plant in Jiangsu Province is 5.0×104 m3/d. The secondary biochemical treatment system consists of Bardenpho biochemical tank and secondary settling tank, while the advanced treatment utilizes a combination of denitrification filter, high-efficiency settling tank and ultraviolet disinfection. The design effluent quality is required to meet the limit in table 2 specified in Discharge Standard of Main Water Pollutants for Municipal Wastewater Treatment Plant & Key Industries of Taihu Area (DB 32/1072-2018), where COD shall not exceed 41 mg/L. In this project, the biochemical tank, secondary settling tank, sludge pumping house, and secondary pumping house were constructed as a unified facility, the denitrification filter, backwashing blower chamber, and backwashing wastewater tank were integrated into a single system, and micro-sand was introduced into the high-efficiency settling tank. These designs enhanced the treatment capacity while significantly reducing the footprint area of the wastewater treatment plant and addressing the land constraint issue.
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