海绵城市建设中初期雨水径流处理技术方案研究

Study on Technical Scheme of Initial Rainwater Runoff Treatment in the Construction of Green Infrastructure

初期降雨径流作为非点源污染的主体,具有突发性和非连续性,且污染物含量随着降雨强度和径流量变化而变化的幅度较大[1]。随着城市基础设施的建设,点源污染已经得到了有效控制,非点源污染近年来越来越多地得到关注。在我国城镇化高度发展的地区,进行初期降雨径流的控制、收集和处理,一方面可以有效削减城市降雨径流带来的面源污染符合,另一方面对于涵养水资源,修复城市水生态系统,提高城市抗洪能力有着重要作用。因此,本文主要综述了巢湖流域初期雨水径流计算方法、源头-过程-末端三个阶段的处理技术,结合笔者的实际工程经验,形成了一整套初期雨水径流处理技术方案。

As the main body of non-point source pollution,the initial rainfall runoff is sudden and discontinuous,and the pollutant content changes greatly with the shift of rainfall intensity and runoff.With the construction of urban infrastructure,point source pollution has been effectively controlled,and non-point source pollution has been paid more and more attention in recent years.In the highly developed areas of urbanization in China,the control,collection and treatment of initial rainfall runoff can effectively reduce the non-point source pollution caused by urban rainfall runoff,on the other hand,it plays an important role in conserving water resources,repairing urban water ecosystem and improving urban flood resistance.Therefore,this article mainly summarized the calculation method of initial rainwater runoff and the treatment technology of source process end three stages in Chaohu watershed.Combined with the practical engineering experience,a series of technical scheme of initial rainwater runoff treatment was formed.