产业密集型城镇污水处理厂纳管监控体系构建与应用

Construction and Application of Headstream Monitoring System for Town Wastewater Treatment Plants in Industry-intensive Area

产业密集型城镇污水处理厂普遍存在进水中工业废水比例高、水质水量变化大,而导致运行效果不稳定的问题。上海市政工程设计研究总院(集团)有限公司提出了纳管企业总排放口、中途提升泵站和污水处理厂预处理三级监控策略,配合接管协议等管理措施,形成纳管监控体系。该项成果在苏州市某污水处理厂的应用表明,纳管企业排放的重要污染物浓度逐年下降,水质波动性减小;污水处理厂的进水水质和运行稳定性明显改善,年平均出水COD和总磷分别从60±10 mg/L和2.1±1.6 mg/L下降到37±3 mg/L和0.14±0.03 mg/L,可稳定达到一级A标准,超标风险大大减小。

The town wastewater treatment plants(WWTPs) in industry-intensive area generally have the problems of the high proportion of industry wastewater in the influent and the great variations of influent water quantity and quality so as to cause the instable operation effect. The article proposes three-level monitoring strategy of enterprise sewage outfall, midway lifting pump stations and pretreatment processes of WWTPs, the proper management measures of takeover agreement in order to form the headstream monitoring system. The application result of a WWTP in Suzhou City shows that the concentrations of key pollutants discharged from the headstream enterprises are reduced year by year, and the fluctuation of wastewater quality is improved. More importantly, the influent water quality and operation stability of WWTP are significantly improved, and the annual mean effluent COD and TP are decreased separately from 60±10mg/L and 2.1±1.6 mg/L to 37±3 mg/L and 0.14±0.03 mg/L, which can meet the Class A standard and the excessive risk is greatly decreased.