复合人工湿地对新农村生活污水的净化效果

目的]研究复合人工湿地对新农村生活污水的净化效果。方法]通过建设复合垂直流-水平潜流人工湿地系统,研究其对接收新农村生活污水及雨污的池塘废水的净化效果。结果]在春、夏、秋三季,复合人工湿地系统对废水均有较好的去除效果,且去除效果稳定。在整个运行期内,复合人工湿地系统对CODCr、TP、TN、NH4+-N的平均去除率分别达到64.71%、64.81%、40.21%、54.26%以上,且出水平均浓度均达到《地表水环境质量标准》(GB3838-2002)III类水质标准。复合人工湿地系统的二级湿地单元出水水质明显优于一级湿地单元,但第一级的处理效果高于第二级。结论]该研究可为新农村生活污水治理提供参考依据。

Purifying Effect of the Domestic Sewage in New Countryside by Integrated Constructed Wetland

Objective ] The research aimed to study purifying effect of the domestic sewage in new countryside by integrated constructed wet- land. Method ] By establishing integrated vertical flow-horizontal subsurface flow wetland system, its purifying effect on pond wastewater ac- cepting domestic sewage and rainfall sewage in new countryside was studied. Result ] In spring, summer and autumn, integrated constructed wetland system had better removal effect on wastewater, and removal effect was stable. During whole running period, average removal rates of the CODcr, TP, TIN and NH4 ＋ -N by integrated constructed wetland system were respectively more than 64.71%, 64.81%, 40.21% and 54.26%. Average concentration of the effluent reached Level-III water quality standard of Environmental Quality Standard for Surface Water （ GB3838 - 2002 ）. Effluent quality of the second-order wetland unit in integrated constructed wetland system was obviously better than the first one, but treatment effect of the first order was higher than the second one. Conclusion] The research could provide reference basis for treat- ment of the domestic sewage in new countryside.