伍姓湖入湖口水生态治理人工湿地设计案例探讨

A Case Study on the Design of Constructed Wetland for Aquatic Ecological Treatment of Wuxing Lake Inlet

采用“预处理+两级表面流人工湿地+垂直流人工湿地”的湿地系统处理了涑水河受污染的河水,结合占地面积170亩、进水量为2万m^(3)/d的人工湿地设计,介绍了湿地各处理单元的设计参数。运行结果表明:整个湿地系统对COD、NH_(3)-N、TP等污染物有着良好的处理效果,运行效果稳定,出水水质主要指标稳定达到《地表水环境质量标准》(GB3838-2002)Ⅳ类标准,在进水浓度低时,出水指标可以达到地表水Ⅲ类标准,可为其他类似河流、湖泊采用湿地工艺进行污染治理提供参考。

The wetland system of"pretreatment+two-level surface flow constructed wetland+vertical flow constructed wetland"is used to treat the contaminated river water of the Sushui River.Combined with the design of the constructed wetland with an area of 170 mu and a water inflow of 20,000 m^(3)/d,the design parameters of each processing unit in the wetland are introduced.The operation results show that the entire wetland system has a good treatment effect on COD,NH_(3)-N,TP and other pollutants,and the operation effect is stable.When the influent concentration is low,the effluent index can reach Surface Water Environmental Quality Standard(GB3838-2002)Ⅲstandard,which provides a reference for other similar rivers and lakes to use wetland technology for pollution control.