新型分散式污水处理一体化系统中试研究

Pilot Study on a New Integrated Decentralized Wastewater Treatment System

针对分散式生活污水的特点开发了新型分散式污水处理一体化系统,研究其对农村生活污水中污染物的去除效果。2019年5-12月,以苏州市金庭镇镇区及附近乡村的生活污水为系统进水,考察系统的出水指标及稳定性,对系统的处理能力进行研究。结果表明:系统出水COD、氨氮、总氮和总磷均值分别为37.02 mg/L、0.96 mg/L、3.27mg/L及0.23 mg/L,去除率分别达到96.8%、95.6%、75.4%和97%,出水SS低于0.5 mg/L。当进水COD在50~300mg/L波动时,出水水质稳定。中试研究表明,本系统具有处理效果好、运行费用低,维护简单及可实现无人值守等特点,适用于处理农村生活污水。

A new integrated decentralized sewage treatment system was developed according to the characteristics of distributed rural sewage,and its effect on the removal of pollutants in rural domestic sewage was studied.From May to December of 2019,the domestic sewage in Jinting town of Suzhou and the nearby villages was taken as the inlet water of the treatment system,the effluent index and stability of the system were investigated for the capacity of the system.The results showed that the average value of COD,NH_(4)^(+)-N,TN,and TP of the effluent were 37.02 mg/L,0.96 mg/L,3.27 mg/L,and 0.23 mg/L,respectively.The removal rate of pollution indicators reached 96.8%,95.6%,75.4%,and 97%respectively.And the SS of effluent was lower than 0.5 mg/L.The quality of effluent water was stable when the COD value of inlet water fluctuated from 50 to 300 mg/L.These results indicated that the treatment system is suitable for the treatment of rural domestic sewage,it has a good effect,low operating costs,and low maintenance difficulty.