在最佳混凝条件下，雨水径流浊度的去除率达99%。
Under best coagulation condition, removal of 99% for turbidity was obtained.
汇流的雨水增加，径流系数增大，形成了地面的雨水径流。
The increase of rainwater runoff, runoff coefficient increases, the formation of the ground.
要使材料完全按层排列，要保持树枝指向下方，以便雨水径流。
Work in layers from the ground up and keep the branches pointed toward down for rainwater runoff.
屋顶雨水径流的地区可能需要排水渠或砾石坑保护植物和结构。
Roof rain runoff areas may require a drain or gravel sump to protect plants and structures.
下水道系统是古代和设计不当，结合雨水径流污水在同一管道系统。
The sewer system is ancient and poorly designed, combining storm water runoff with sewage in the same piping system.
但是雨水径流有明显的初期冲刷作用，污染物集中在初期的数毫米雨量中。
But the rainfall and runoff has obvious effect of flushing at the initial stage and most of pollutants just concentrate in the first few millimeters of rainfall.
绿色的屋顶面积为8400平方英尺（780平方米），帮助管理雨水径流。
An 8,400-square-foot (780-square-metre) green roof helps manage stormwater runoff.
西方国家近些年对雨水径流控制的研究为我国解决雨水资源问题提供了借鉴。
The Western countries' research about the control of the rainstream is a model to solve the problem of stormwater resources in China.
因此，混凝沉淀是雨水径流处理利用及污染控制最简便易行且有效的处理方法。
So, it was believed that coagulation and sedimentation might be the simplest and very effective way to treat the rainwater runoff and for pollution control.
处理雨水径流和洒水排水的技术类似，但您的景观设计师应该考虑到最坏的情况。
The techniques for handling rain runoff and sprinkler drainage are similar, although your landscape designer should take into account the worst-case scenario.
提出了一种适用于规划层面的评价下凹式绿地雨水径流截留效率的概率分析方法。
A probabilistic analysis methodology to evaluate stormwater runoff capture efficiency in low elevation greenbelt is proposed, which is meaningful on the planning level.
通过对邯郸市城区屋面雨水径流水质进行分析测定，发现城区雨水径流水质污染严重。
Through the analysis and measuring of the water quality of roof rain-runoff in Handan city, it is found that the water quality of roof rain-runoff is polluted seriously.
城市雨水径流管理对解决水源、洪水、污水等问题具有重要意义，近年来受到国际上的广泛关注。
Great attention has been paid to efficient runoff management, which is helpful for solving the above water problems.
许可证持有人须确保贮料区用物被覆盖和设有截流渠，以免雨水径流冲刷外露泥土面层或贮料区。
The Permit Holder shall ensure that all stockpile areas are covered and intercepting drains are provided to prevent stormwater runoff from washing across exposed soil surfaces or stockpiled areas.
路面雨水径流污染最严重，尤其是初期雨水各污染物浓度明显高于屋面和绿地径流中的污染物浓度；
The road runoff is most seriously polluted , especially in the early rainfall the pollutant concentration was significantly higher than concentration in roof runoff and lawn runoff.
掌握城区雨水径流水质及其主要的影响因素是有效地利用城区雨水资源和控制城市非点源污染的基础。
It is a critical basis for utilization of rainfall resource and pollution control of runoff in urban area to understand runoff quality and its main influential factors.
城市雨水径流污染物组分复杂，浓度变化大，可生化性差，排放间歇且无规律，故处理起来难度较大。
The components in the urban stormwater runoff are very complicated, and its range of concentration change is very big, so it is very difficult to dispose of the urban stormwater runoff.
城市雨水径流特别是初期雨水污染严重，是水体富营养化、华以及海域赤潮等环境问题产生的根源之一。
Urban runoff pollution is serious especially for earlier runoff and it is one of the reasons that lead to water body eutrophic algal bloom and red tide on sea.
硬化路面增多和建筑物面积增加，导致雨水下渗面积缩小，引起雨水径流加大，是不容忽视的重要原因。
We should not overlook the increasing impermeable pavements and buildings which narrowing the stormwater infiltration area causing increasing stormwater runoff.
现概述国外城市雨水径流污染及控制的措施，以期为我国城市雨水径流污染控制和决策提供参考和借鉴。
This paper summarizes storm runoff pollution and how to control it in the developed countries aims at providing methods and references for studies and researches in China.
现概述国外城市雨水径流污染及控制的措施，以期为我国城市雨水径流污染控制和决策提供参考和借鉴。
This paper summarizes storm runoff pollution and how to control it in the developed countries, aims at providing methods and references for studies and researches in China.
分析了径流污染产生的特点，概括了城市雨水径流污染控制的必要性，并着重论述了径流污染控制技术。
The characteristics of runoff pollution are analyzed, the necessity of the runoff pollution control is summarized, and the control techniques of runoff pollution are mainly discussed in this paper.
城市雨水径流特别是初期雨水污染严重，是水体富营养化、华以及海域赤潮等环境问题产生的根源之一。
Urban runoff pollution is serious especially for earlier runoff and it is one of the reasons that lead to water body eutrophic, algal bloom and red tide on sea.
各屋面雨水径流中污染物含量有所不同，沥青屋面雨水径流污染物含量较高，铺砌屋面雨水径流水质较好。
The quality of different roof runoff exist differences as well, asphalt roof runoff have higher concentration of pollutants while paving roof runoff roof surfaces have better water quality.
通过对上海市雨水径流水质的监测，以及对其污染主要影响因素与污染程度的分析，掌握水质特性及其变化规律。
The rain runoff water quality in Shanghai was monitored and the main pollution factors influencing the water environment were investigated.
一个广阔的生物池塘作为收集雨水和地表水径流的景观灌溉流域。
An expansive biological pond serves as a basin collecting rainwater and surface water run-off for landscape irrigation.
一个广阔的生物池塘作为收集雨水和地表水径流的景观灌溉流域。
An expansive biological pond serves as a basin collecting rainwater and surface water run-off for landscape irrigation.
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