Page 136 - 《环境工程技术学报》2022年第5期

Vol.12，No.5 环 境 工 程 技 术 学 报 第 12 卷，第 5 期
Sep.，2022 Journal of Environmental Engineering Technology 2022 年 9 月

王生愿，陈江海，陈小龙.基于降水等级分异方法的低影响开发小区雨水径流污染负荷削减率的评 估 [J].环境工程技术学报，2022，12（5）：1492-
1499.
WANG S Y,CHEN J H,CHEN X L.Evaluation of reduction rate of rainwater runoff pollution load in low impact development community based on
rainfall grade differentiation method[J].Journal of Environmental Engineering Technology，2022，12（5）：1492-1499.

基于降水等级分异方法的低影响开发小区雨水

径流污染负荷削减率的评估

王生愿 ，陈江海 ，陈小龙 1
1
2
1.北京清控人居环境研究院有限公司
2.上海勘测设计研究院有限公司
摘要 为定量评估低影响开 发 (LID 技术对雨水径流污染负荷的削减率，选取嘉兴市柳岸禾丰小区作 为 LI 小区，与其临近且
)
D
下垫面类型相似的浅水湾小区作为传统小区，同步监测小区的外排水量 和 T 浓度，根据降水等级分异计 算 2 个小区同等降水
P
情景下单位面积污染负荷量，再以传统小区的单位面积污染负荷量为基准核 算 LI 小区的雨水径流污染负荷削减率。结果表
D
明：小雨时，LI 设施可消纳其服务范围内的所有径流及所携带的污染物，污染负荷削减率 达 100%；当降水量增至超 过 LI 设
D
D
施功能阈值时，污染物削减率开始降低，中雨时降 至 67%，大雨时降 至 46%，年均雨水径流污染负荷削减率约 为 66%。整体来
看，LI 设施雨水径流污染负荷削减率表现出明显的降水等级差异。采用降水等级分异的方法能够减少降水等级所造成的误
D
差，确保评估结果的精准程度，为小 区 LI 设施建设提供可靠的决策依据。
D
关键词 低影响开 发 (LID 小区；传统小区；降水等级分异；雨水径流；负荷削减率
)
中图分类号：X52 文章编号：1674-991X（2022）05-1492-08 doi：10.12153/j.issn.1674-991X.20210413
Evaluation of reduction rate of rainwater runoff pollution load in low impact
development community based on rainfall grade differentiation method

1
2
WANG Shengyuan , CHEN Jianghai , CHEN Xiaolong 1
1.Beijing Tsinghua Holdings Human Settlements Environment Institute Co., Ltd.
2.Shanghai Investigation, Design & Research Institute Co., Ltd.
Abstract In order to quantitatively evaluate the reduction rate of low impact development (LID) techniques on
rainwater runoff pollution load, Liuan Hefeng Community in Jiaxing City was selected as the LID community, and
Bay Community adjacent to it with similar underlying surface types was selected as the traditional community. The
external discharge and TP concentration of the communities were monitored simultaneously. Then, the pollution
load per unit area of the two communities was calculated according to the rainfall level differentiation under the
same rainfall situation. Finally, the reduction rate of rainwater runoff pollution load of LID community was
calculated based on the pollution load of unit area of traditional community. The results showed that: In light rain,
LID facilities absorbed all the runoff and pollutants within their service range, and achieved a 100% reduction rate
of pollution load. With the increase of rainfall, runoff and pollutants carried by it gradually exceeded the functional
threshold of LID facilities, and the pollutant abatement rate began to decrease. In moderate rain the reduction rate
dropped to 67% and in heavy rain it dropped to 46%. The average annual reduction rate of rainwater runoff pollution
load was about 66%. On the whole, the reduction rate of rainwater runoff pollution load of LID facilities showed
obvious differences in rainfall levels. The method of rainfall level differentiation could reduce the error caused by
rainfall levels and ensure the accuracy of evaluation results, which provided a reliable decision-making basis for LID
facility construction in communities.
Key words low impact development (LID) community; traditional community; rainfall grade differentiation;

收稿日期：2021-08-16
基金项目：国家重点研发计划项 目 (2016YFC0802407)
作者简介：王生 愿 (1987—)，男，工程师，硕士，主要从事流域水环境综合整治等方面研究，153749527@qq.com