厌氧池-潜流人工湿地处理低浓度农村生活污水的研究  

Anaerobic Tank-Subsurface Flow Constructed Wetland System for Rural Domestic Wastewater Treatment

作　　者：杨文婷[1,2] 王德建[1] 纪荣平[3] 

机构地区：[1]中国科学院南京土壤研究所,南京210008 [2]中国科学院研究生院,北京100049 [3]扬州大学环境科学与工程学院,江苏扬州225009

出　　处：《土壤》2010年第3期485-491,共7页Soils

基　　金：国家科技支撑计划课题项目(2006BAJ10B06);中国科学院知识创新工程项目(KSCX2-YW-N-038)资助

摘　　要：研究了厌氧池-潜流人工湿地系统(anaerobic tank-subsurface flow constructed wetland systerm,AT-SFCW)对江苏省常熟市农村生活污水的处理,探讨了该系统对生活污水中主要污染物的去除效果,并将厌氧池部分与湿地部分的处理效果进行了比较。结果表明,该系统对化学需氧量(CODcr)、总氮(TN)、总磷(TP)、氨氮(NH3-N)、硝氮(NO3--N)的总平均去除率分别达到44.3%、42.7%、73.9%、45.6%、37.5%,出水平均浓度分别为16.9、5.2、0.1、3.3、1.4mg/L,达到国家城镇污水处理厂污染物排放一级A类标准(GB18918-2002)。系统中厌氧池部分对CODcr、TN、NO3--N的去除率分别达到17.4%、6.7%、57.7%。TP经厌氧池后有较明显的上升,升高率达到15.3%。系统中湿地部分对TP、NH3-N、TN、CODcr的去除起主要作用,去除率分别达到89.2%、44.5%、36.0%、26.9%。该系统对农村生活污水的处理效果较好,建设运行成本低廉,维护管理方便,适合农村地区生活污水处理的运用与推广。An Anaerobic Tank-Subsurface Flow Constructed Wetland （AT-SFCW） System for treating rural domestic wastewater was studied in removal efficiency and mechanism for Chemical Oxygen Demand （COD）, nitrogen and phosphorus in Xuedian Village, Xinzhuang Town of Changshu City. The AT part, which compared with SFCW, was also studied for explaining the functions of AT-SFCW System. The results showed that this system could remove 44.3%, 42.7%, 73.9%, 45.6% and 37.5% of COD, TN, TP, NH3-N and NO3-N respectively, and the effluent concentration were 16.9, 5.2, 0.1, 3.3 and 1.4 mg/L for COD, TN, TP, NH3-N and NO3^--N respectively, which were below the national discharge standard of pollutants for municipal wastewater of Class A level （GB18918-2002）. The AT part could remove 17.4%, 6.7% and 57.7% of COD, TN and NO3^--N respectively, but the concentrations of TP was increased by about 15.3%. The removal efficiency of SFCW part for TP, NH3-N, TN and CODer were 89.2%, 44.5%, 36.0% and 26.9% respectively, so this part played a more important role in removing pollutants. Hence, AT-SFCW system is very effective in treating rural domestic wastewater, it is also material/energy-saving compared with central technical systems, thus, worth popularization and application.

关 键 词：农村生活污水 人工湿地 厌氧池 处理效果 

分 类 号：X131.2[环境科学与工程—环境科学]