川西林盘生活污水厌氧复合生态分散处理技术研究——以成都市新津区串头村十二组林盘为例

Research on Anaerobic Composite Ecological Dispersion Treatment Technology of Domestic Sewage in Linpan,West Sichuan——A Case Study of 12th Group of Chuantou Village,Xinjin District,Chengdu

川西林盘作为成都平原特有的传统居住形态和生态景观,承载着古蜀文明的文化底蕴。随着乡村振兴的持续推进,川西林盘农村生活污水污染环境现象日益凸显,成为农村人居环境整治的短板。文章拟开发一种处理水质稳定,投资省、运行费用低、管理方便的生态措施分散生活污水处理技术。该分散处理技术以厌氧发酵技术为主,辅以人工湿地和回流曝气三者有机结合形成一种生活污水分散复合生态处理系统。通过该技术在成都市新津区串头村十二组21户林盘生活污水处理示范工程案例3年运行与监测的跟踪研究,表明该技术具有投资省、运维费用低,管理方便,能够有效降低生活污水中的pH值,SS,CODCr,NH3-N,TP等污染指标,出水水质能稳定达到四川省《农村生活污水处理设施水污染物排放标准》(DB51/2626-2019)中的二级标准,经济效益、生态效益社会效益显著。该案例可为西南地区农民集中居住区或林盘农村生活污水有效治理提供有益参考。

As a unique traditional residential form and ecological landscape in Chengdu Plain,Linpan in West Sichuan bears the cultural deposits of ancient Shu civilization.With the continuous advancement of rural revitalization,environmental pollution caused by rural sewage in Linpan has become increasingly prominent,which has become a shortcoming in the improvement of rural living environment.This paper developed an ecological decentralized domestic sewage treatment technology with stable water quality,low investment,low operating cost and convenient management.This dispersive treatment technology was based on the anaerobic fermentation technology supplemented by the combination of constructed wetland and backflow aeration to form a dispersive composite ecological treatment system for domestic sewage.Through the three years of operation and monitoring of this technology in the demonstration project case of 21 households in Chuantou Village,Xinjin District,Chengdu,the results showed that this technology has the advantages of low investment,low cost of operation and maintenance,and convenient management.It could effectively reduce the pH,SS,CODCr,NH3-N,TP and other pollutions in domestic sewage,and the effluent water quality could reach the secondary standard in Sichuan province’s,"Water Pollutant Discharge Standard for Rural Domestic Sewage Treatment Facilities"(DB51/2626-2019).