Rainwater is an important part of natural water system, all kinds of Water use on land use are rain. Currently rainwater are discharged directly into natural water bodies, Rainwater carries significant concentrations of pollutants, resulting in the pollution of water bodies. This article discusses the collection and discharge of rainwater issues In the background of Sponge City.%雨水是自然界水循环系统中的重要环节。陆地上一切形式的水资源利用都是雨水利用。目前国内雨水均是直接排放入天然水体,鉴于初期雨水携带相当浓度的污染物质,造成了对水体的污染。本文主要是在海绵城市大背景下对初期雨水的收集及排放问题提出了一些讨论。
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