三种人工湿地植物处理农村生活污水的净化效果

Treatment of Rural Domestic Sewage by Simulated Constructed Wetland

摘要: 采用潜流式人工湿地工艺处理农村生活污水，结果表明：不同植物对氨氮、总磷的去除能力差别较大，菖蒲对总磷和氨氮净化效果较好.试验7d后，菖蒲（Acorus calamus Linn)、再力花(Thalia dealbata)和梭鱼草(Pontederia cordata)对总磷和氨氮的最佳去除率分别达到93.4%和77.6%、72.4%和71.6%、70.4%和70.9%，出水水质达到《广东省水污染物排放标准》（DB44/26-2001）的一级标准.该工艺投资少、处理效果好、操作简单、维护成本低.

Abstract: The constructed wetland process was applied to treat rural domestic sewage．The results showed that the abilities of diferent macrophyte species to remove nitrogen and phosphorous were quite different with each other．Acorus calamus Linn has stronger ability to remove TP and NH3-N . After 7 days of treatment，the rates of Acorus calamus Linn, Thalia dealbata and Pontederia cordata to remove TP and NH3-N were 93.4% and 77.6%, 72.4% and 71.6%,70.4% and 70.9% respectively. The effluent quality meets the first class standard specified in the discharge limits of water pollutants of Guangdong Procince (DB44/26-2001). This process has the characteristics of low investment, good treatment effect, simple operation and low maintenance cost.