HANXue.Research on Process Optimization of Sludge Water Treatment System of Shanghai X Waterworks[J].China Water & Wastewater,2025,41(22):92-97.
上海X水厂排泥水处理系统工艺优化研究
- Title:
- Research on Process Optimization of Sludge Water Treatment System of Shanghai X Waterworks
- 摘要:
- 为顺应环保要求，提升排放水水质、降低成本，上海X水厂对排泥水系统进行了摸排、改造和优化。通过调研发现，影响排放水量、水质及运行成本的关键在于砂滤池反冲洗水是否回用。通过排放水水质监测数据分析，确定水质风险点为NH3-N指标。采用折点加氯法降低NH3-N，按照氯∶氨=10∶1向污水调节池中投加次氯酸钠，同时调整运行模式，排放水中NH3-N稳定在0.3 mg/L左右，NH3-N、COD和排放水的累计排放量均低于许可排放量，节省运行成本918元/d。
- Abstract:
- In order to improve the quality and efficiency of the discharged water, and to comply with environmental protection requirements, Shanghai X Waterworks has carried out dredging, renovation, and optimization of the sludge water treatment system. The key factor affecting the discharge water quantity, water quality, and operating costs through research on operating conditions is whether the backwash water of the sand filter is reused. By analyzing the monitoring data of discharged water quality, the water quality risk point is determined to be NH3-N. By using the inflection point chlorination method to reduce NH3-N, sodium hypochlorite was added to the sewage regulating tank according to a chlorine ammonia ratio of 10∶1, and the operating mode was adjusted. NH3-N remained stable at around 0.3 mg/L in the discharged water, and the cumulative emissions of NH3-N, COD, and discharged water were all lower than the permitted discharge amount. Conduct a comparative analysis of water consumption, energy consumption, and chemical consumption to save 918 yuan/d.
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