初期雨水

1
initial rainwater
...质型雨水截污口设计与应用研究-建筑经济关键词] 初期雨水；削减径流；污染控制；防堵塞 [gap=324]Key words: initial rainwater; reduction of rainfall runoff; pollution control; prevention of blockage ..
2
rainwater at initial stage
rainwater at initial stage 初期雨水 construction of freeing corruption at the Initial Stage of Ming Dynasity 明初的廉政建设 ..
3
first2flush rainwater
...键词:城镇雨水径流污染;初期雨水;排水体制;排水系统规划 [gap=949]Key words : Urban runoff pollution ;first2flush rainwater ;drainage system;drainage system planning ...
4
earlier stormwater
初期雨水

1
初期雨水对河道的冲击污染已成为解决河道污染的主要难题之一。
The lash and pollution of initial rain in river course has become one of the key problems in the control of river course pollution.
2
在合流制排水系统中，排水泵站中设置调蓄池是解决城市初期雨水对水体污染的有效措施。
In order to solve the problem of pollution in confluence drainage system, which is caused by initial rainwater, setting storage pond under the drainage pumping station is a effective measure.
3
并且各污染物浓度均随降雨历时呈减少趋势，后趋于平缓，可采用弃流部分初期雨水后进行收集。
There was a decreasing trend in each pollutant concentration with rainfall duration and finally tends to flat. So we collect the rainwater after abandoning part of the initial flow of rainwater.

初期雨水
初期雨水，顾名思义就是降雨初期时的雨水。一般是指地面10-15mm厚已形成地表径流的降水。由于降雨初期，雨水溶解了空气中的大量酸性气体、汽车尾气、工厂废气等污染性气体，降落地面后，又由于冲刷屋面、沥青混凝土道路等，使得前期雨水中含有大量的污染物质，前期雨水的污染程度较高，甚至超出普通城市污水的污染程度。经雨水管直排入河道，给水环境造成了一定程度的污染。

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