生态湿地在污水处理厂尾水深度处理中的应用

Application of ecological wetland technology in in-depth treatment of tail water from municipal sewage plant

将生态湿地技术用于处理南通市某污水处理厂的尾水,详细介绍了处理工艺流程和设计参数,并对主要技术指标进行了分析。运行结果表明:生态湿地技术对城市污水处理厂尾水具有较好的净化效果,对COD、BOD5、NH3-N和TP的平均去除率分别达到60.1%,55.3%,76.6%,57.8%以上,出水水质达到了《地表水环境质量标准》(GB3838-2002)中Ⅲ类水的要求,有效削减了污染物的入河排放量,改善了区域水环境质量。

The ecological wetland technology was applied to in - depth treatment of the tail water from a municipal sewage plant in Nantong. This paper explains the processing procedures and design parameters and analyzes the main technical indexes. The operation result shows that the ecological wetland technology has a better purification effect on the tail water, with the average removal rates of COD, BOD5 , NH3 - N and TP at 60.1% , 55.3% , 76.6% and 57.8% respectively. The effluent quality met the class III criteria of the Environmental Quality Standards for Surface Water; the pollutant discharged into the river was effectively reduced, and the regional water environment quality was improved.