滇池流域某分流制小区雨水径流水质及初期冲刷规律研究  

Rainwater runoff quality and the first flush effect in separated sewer system community of Dianchi Lake basin

作　　者：付国楷[1] 陈水平[1] 陆颂 潘成勇[1] 徐官安[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《环境工程学报》2015年第12期5703-5708,共6页Chinese Journal of Environmental Engineering

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07102-001-003)

摘　　要：为研究滇池流域呈贡地区典型城市小区的雨水径流水质规律及其初期冲刷效应,以便为揭示滇池污染原因和水环境治理积累基础资料,研究选取洛龙河公园旁边一典型分流制城市小区为对象,在雨水排放口布置监测点进行雨水水质水量监测。结果表明,雨水径流污染较为严重,各场次TSS、COD的EMC值都超过了《城镇污水处理厂污染物排放标准》（GB 18918-2002）的一级B标准。初期冲刷效应普遍存在,且随着雨强的增大而增强,截留降雨前期50%的雨水径流量,能有效截留TSS、COD、TN、TP、NH3-N的比例分别为56.1%-68.3%、55.1%-64.0%、54.9%-61.4%、44.4%-57.7%和54.7%-58.0%。滇池流域呈贡地区城市小区在雨水径流量累积达到0.6之前,截留效率随着截留径流量的比例增加而增加,控制截留的径流量体积比例在0.4-0.8能够取得较高的污染物截留效率。In order to study the water quality and the first flush of rainwater runoff at a typical urban residential area of Chenggong area in Dianchi Lake basin,also to accumulate fundamental data for revealing the causes of Dianchi Lake pollution and treating its water environment. A typical urban community next to Luolong Park was selected to research the quality and quantity of runoff at its rainwater outfall. The results showed that rainwater runoff was polluted seriously,the EMC of TSS,COD of each rainfall event were much higher than that of the B standard of Pollutant Emission Standards of Urban Sewage Treatment Plant（ GB 18918-2002）. The first flush effect was widespread and enhanced with the increase of rainfall intensity. The ratios of pollutants,such as TSS,COD,TN,TP,NH3-N can be effectively trapped in the first 50% of runoff,were 56. 1% —68. 3%,55. 1% —64. 0%,54. 9% —61. 4%,44. 4% —57. 7%,54. 7% —58. 0%,respectively. Before the runoff cumulative ratio reached 0. 6,pollutants trapping efficiency increased. A higher pollutants interception efficiency can be achieved when the interception ratio of rainwater runoff was kept at the range of 0. 4 - 0. 8 at Chenggong typical urban residential area in Dianchi Lake basin.

关 键 词：城市小区 初期冲刷效应 雨水径流 分流制排水系统 滇池流域 截留效率 

分 类 号：X506[环境科学与工程—环境工程]