两种人工湿地对农村生活污水的净化效果比较  

Comparison between Two Different Integrated Constructed Wetlands for Rural Domestic Sewage Purification

作　　者：唐晓丹[1] 崔理华[1] 郑离妮[1] 龙翠芬[1] 朱太涛[1] 

机构地区：[1]华南农业大学资源环境学院,广东广州510642

出　　处：《中国给水排水》2012年第23期117-120,共4页China Water & Wastewater

基　　金：广东省科技计划项目(2008A020100010;2009A020101005;2010B031800007);国家水体污染控制与治理科技重大专项(2009ZX07102-003);国家自然科学基金资助项目(40871110;41071214);广州市科技支撑计划项目(2008Z1-E621)

摘　　要：分别采用复合水平流、垂直流—水平流一体化人工湿地系统处理农村生活污水,并进行比较。一年的运行结果表明,两套湿地系统对农村生活污水中COD、BOD5、NH4+-N、TN、TP等都具有良好的去除效果。复合水平流湿地系统对COD、BOD5、NH4+-N、TN、TP的年平均去除率分别为78.6%、75.2%、59.4%、62.7%、66.7%,出水浓度分别为8.0、7.1、8.2、8.6、0.9 mg/L;一体化系统对COD、BOD5、NH4+-N、TN、TP的年平均去除率分别为81.0%、83.4%、89.6%、50.6%、67.9%,出水浓度分别为6.1、4.9、2.2、11.3、0.8 mg/L。其中,出水COD、BOD5、TN值都达到了《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级A标准,TP值达到了一级B标准。垂直流—水平流一体化系统对NH4+-N的去除率明显高于复合水平流系统,但两套系统对COD、BOD5、TN、TP的去除率无明显差异。垂直流—水平流一体化系统的处理效率高、占地面积小,更适于处理农村生活污水。The integrated horizontal subsurface flow system and vertical-horizontal flow system were built to compare their differences. The one-year operation results showed that both constructed wetlands had high removal efficiencies of COD, BODs, NH4 - N, TN, TP. The average annual removal rates of COD, BODs, NH4＋ - N, TN, TP in the integrated horizontal subsurface flow system were 78.6% , 75.2%, 59.4%, 62.7% and 66.7%, respectively, and the effluent concentrations were 8.0 rag/L, 7.1 rag/L, 8.2 mg/L, 8.6 mg/L and 0.9 mg/L respectively. In comparison, those rates in the vertical- horizontal flow system were 81.0%, 83.4%, 89.6% , 50.6% and 67.9% respectively, and the efflu- ent concentrations were 6.1 rag/L, 4.9 mg/L, 2.2 mg/L, 11.3 mg/L and 0.8 mg/L respectively. The concentrations of COD, BODs and TN in the effluent of both constructed wetlands met the first level A criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （GB18918-2002）, and the effluent TP met the first level B criteria. The NH4 -N removal efficiency in vertical-horizontal flow system was notably higher than that in integrated horizontal subsurface flow sys- tem. But there was no significant difference in removal efficiencies of COD, BOD5 , TN and TP between the two systems. Vertical-horizontal flow system is more suitable for rural sewage treatment because of its high efficiency and small footprint.

关 键 词：复合人工湿地 农村生活污水 净化效果 比较 

分 类 号：X703[环境科学与工程—环境工程]