江淮农村生态型排水系统构建及截污作用研究  

Construct of Yangtze-Huai River Rural Areas Ecological Drainage System and Its Retention Effect on Pollutants

作　　者：单保庆[1] 李楠[1,2,3] 唐文忠[1] 

机构地区：[1]中国科学院生态环境研究中心环境水质学国家重点实验室,北京100085 [2]山东农业大学资源与环境学院,泰安271018 [3]山东省高校农业环境重点实验室(山东农业大学),泰安271018

出　　处：《环境科学》2012年第11期3797-3803,共7页Environmental Science

基　　金：国家科技支撑计划项目(2012BAJ24B01);天津市科技创新专项资金项目(08FDZDSF03200);水利部公益性行业科研专项(201201027)

摘　　要：以安徽省巢湖北岸牌坊陈村为例,构建了一种由沟渠、水塘和湿地组合而成的生态型排水系统,并研究了该系统对农村降雨径流污染的截控作用.构建的牌坊陈村生态型排水系统实现了污水排放、收集和处理一体化,系统通过各组成单元物理、化学和生物综合作用,对降雨径流中污染物具有较高的截留率,减少了营养盐对周围水体输出负荷.3场降雨监测结果表明,系统对TSS、COD、TP和TN的平均截留率分别为78.2%、57.8%、55.5%和64.2%,系统出水中TSS、COD、TP和NH4+-N平均质量浓度分别为23.5、66.3、0.49和3.03 mg·L-1,达到《污水综合排放标准》一级标准要求.水塘作为系统主要截流、纳污以及蓄水单元,其日常水质指标TSS、COD、TP和TN平均质量浓度分别为28.0、31.2、0.47和4.65 mg·L-1,基本符合《地表水环境质量标准》中Ⅴ类标准要求.Ecological drainage system（EDS） including ditches,ponds and wetland was constructed at the Paifangchen village on the north of Chaohu Lake,Anhui,and its retention effect on pollution was investigated.With the comprehensive function of sewage discharge,collecting and process,the system could intercept runoff pollutants effectively.The results acquired from 3 rainfall events showed that the retention rates of EDS to TSS,COD,TP and TN were 78.2%,57.8%,55.5% and 64.2% respectively,and the concentrations at outflow of the system to TSS,COD,TP and NH＋4-N were 23.5,66.3,0.49 and 3.03 mg·L^-1 separately,met the first standard of ＂Integrated Wastewater Discharge Standards＂.Ponds were the important unit of EDS and the daily water quality concentrations of TSS,COD,TP and TN were 28.0,31.2,0.47 and 4.65 mg·L^-1 respectively,met the Ⅴ standard of ＂Environment Quality Standards for Surface Water＂ basically.

关 键 词：农村地区 排水系统 径流污染 截留 水质 

分 类 号：X52[环境科学与工程—环境工程]