改进型MST-人工湿地组合工艺处理分散生活污水的研究

Study on decentralized domestic sewage treatment by integrating theimproved MST and artificial wetland

在温室型MST装置中加入人工浮岛构成生态/生物一体化装置,出水经过人工湿地深度处理,将此组合工艺用于分散生活污水处理中,研究其可行性。研究发现当COD、NH4+-N、TN进水浓度分别为323.46mg/L、25.98mg/L、34.57mg/L时,出水浓度分别为28.79mg/L、0.93mg/L、9.65mg/L,平均去除率分别为89%、96%、72%,达到了《城镇污水出水处理厂污染物排放标准》一级A标的标准,证明了该工艺的可行性。

The biological ecological integrated device is formed after putting artificial floating island into the greenhouse-like MST integrated device ,and the eflfuent of it lfows through the constructed wetlands which is to achieve advanced treatment,In order to prove whether it is feasible ,this process is used to treat the decentralized domestic sewage.The study finds out that when the influent concentration of COD、NH4^＋-N、TN is 323.46mg/L、25.98mg/L、34.57mg/L,the effluent concentration of COD、NH4^＋-N、TN is 28.79mg/L、0.93mg/L、9.65mg/L respectively ,the average removal rate can achieve 89%、96%、72% separately reaching the A level of discharge standard of pollutants for municipal wastewater treatment ,which demonstrates that the process is viable.