合肥市某城中村雨天出流的污染特性及控制对策  

Pollution Characteristics and Countermeasures of Overflow in Wet Weather from an Urban Village in Hefei City

作　　者：阮大康[1] 钱静[2] 李田[1] 沈军[1] 卢小艳[1] 

机构地区：[1]同济大学环境科学与工程学院,上海200092 [2]合肥市排水管理办公室,安徽合肥230001

出　　处：《中国给水排水》2011年第19期60-63,67,共5页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07316-001)

摘　　要：对合肥市南淝河沿岸某城中村雨天出流的污染特性进行了研究。结果表明,虽然该城中村人口密度远低于周边已建成区,但其雨天出流水质差,SS、COD、NH_3-N、TN、TP的事件平均浓度(EMC)的均值分别为694、276、9.9、15.8、4.3 mg/L,相关污染物的年污染负荷分别约为2700、1 070、38、61、16 kg/(hm^2·a)。该城中村的雨天出流对南淝河的水环境危害大,完善对截流管道的调控能力以充分发挥其输送效能,以及在出口采用高效澄清等去除SS的就地净化设施,是削减城中村出流对南淝河污染的可行措施。The pollution characteristics of overflow in wet weather from an urban village by Nanfei River in Hefei were studied. The results show that although the population density of the urban village is much lower than that of the built-up area, but the quality of overflow in wet weather is worse. The event mean concentrations （EMC） of SS, COD, NH3 - N, TN and TP are 694 ing/L, 276 rag/L, 9.9 rag/L, 15.8 mg/L and 4.3 mg/L respectively. The pollution loads of the above pollutants are about 2 700 kg/ （hm^2 · a）, 1 070 kg/（hm^2 · a）, 38 kg/（hm^2 · a）, 61 kg/（hm^2 · a） and 16 kg/（hm^2 · a） respectively. The overflow in wet weather from the urban village does serious harm to the water environment of Nanfei River. Surveying the operation conditions and improving the transportation capability of the intercepting sewers, setting up high-efficiency clarifier would be the effective countermeasures.

关 键 词：城中村 面源污染 事件平均浓度 污染负荷 

分 类 号：X52[环境科学与工程—环境工程]