某农村生活污水生态治理工程效果分析

Study on evaluation of ecological treatment effect of domestic sewage in rural areas

选择彭泽县天红镇某村庄作为典型村庄,采用了生态沟、稳定塘组成的水系连通系统处理该村生活污水。8个月的运行结果表明,该工艺对CODcr的去除率基本上维持在88.46%以上;对总磷的去除率维持在50%~80%;对总氮在运行稳定期的去除率为46.96%,处理效果良好,且出水水质也相对较稳定。各指标出水浓度达到GB18918—002《城镇污水处理厂污染物排放标准》一级A标准。

In this paper, the domestic sewage treatment method was studied with a water connection system, consisting of ec- ological trench and stable pond in a typical village located in Tianhong Town of Pengze County. The results show that CODer removal rate in this process maintained above 88.46% whereas the total phosphorus removal rate was between 50% and 80%. In regard to the total nitrogen removal rate,it also kept a level of 46.96% at the stable period during operation. The treatment effect is excellent accompanied by the relatively stable quality of outcome water with each concentration of index reaching level A according to Discharge standard of pollutants for municipal wastewater treatment plant （GB18918 -2002）.