基于污染负荷控制的屋面初期径流弃除量探讨  

First Flush Discharge Volume of Roof Runoff Based on Pollution Load Control

作　　者：孟莹莹[1] 张书函[1] 陈建刚[1] 龚应安[1] 潘艳艳[1] 

机构地区：[1]北京市水利科学研究所,北京100044

出　　处：《中国给水排水》2010年第7期40-42,共3页China Water & Wastewater

基　　金：水利部公益性行业专项(200801108);国家科技支撑计划项目(2006BAB14B03;2007BAC22B01)

摘　　要：初期径流污染是城市面源污染的主要组成部分,但目前对初期径流的定义、弃除量等都没有统一的说法,而且影响初期效应的因素多而复杂,并与地区特性紧密相关。通过对北京雨水利用示范区降雨及屋面径流水质监测数据的分析,初步探讨了不同初期径流弃除量对污染负荷的削减效果。在不同降雨特性下,屋面产流后弃除2 mm雨量可削减20%～45%的污染负荷,故建议北京市屋面初期径流弃除量标准按2 mm雨量考虑。First flush pollution is a main part of urban non-point source pollution. Presently, a definition of first flush and its discharge volume are unclear. Factors influencing the first flush effect are numerous and complex, often related to local properties. Through analysis of monitored rainfall and roof runoff quality in Beijing stormwater utilization demonstration area, the effect of different first flush discharge volumes on pollution load reduction is preliminarily discussed. Under different rainfall characteristics, discharging 2 mm precipitation from roof runoff can reduce the pollution load by 20% to 45%. Thus, the first flush discharge volume of roof runoff at 2 mm precipitation is proposed for Beijing.

关 键 词：初期径流效应 弃除量 屋面 污染负荷 

分 类 号：X52[环境科学与工程—环境工程]