透水砖系统堵塞失效全过程对径流重金属控制效果的评价

杜晓丽; 匙中文; 尹子杰; 赵梦

doi:DOI:10.13205/j.hjgc.202207001

透水砖系统堵塞失效全过程对径流重金属控制效果的评价

doi: DOI:10.13205/j.hjgc.202207001

杜晓丽^1,2, ,,
匙中文¹,
尹子杰¹,
赵梦¹

1. 北京建筑大学城市雨水系统与水环境教育部重点实验室, 北京 100044;
2. 北京建筑大学北京未来城市设计高精尖创新中心, 北京 100044

基金项目:

国家自然科学基金资助项目(51878024)

北京建筑大学科学研究基金项目(X20148)

北京市委组织部青年拔尖人才支持计划

北京建筑大学金字塔人才培养工程(JDJQ20200302)

详细信息

作者简介:
杜晓丽(1980-),女,教授,博士,主要从事城市雨洪控制利用理论与技术、水污染控制与水质转化技术研究。duxiaoli@bucea.edu.cn

通讯作者:
杜晓丽(1980-),女,教授,博士,主要从事城市雨洪控制利用理论与技术、水污染控制与水质转化技术研究。duxiaoli@bucea.edu.cn

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出版历程
- 收稿日期: 2021-08-08
- 网络出版日期: 2022-09-02

ATTENUATION ON CONTROL EFFECT OF HEAVY METALS IN RUNOFF BY PERMEABLE BRICK DURING THE WHOLE PROCESS OF BLOCKAGE

1. Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
2. Beijing Advanced Innovation Center for Future Urban Design, Beijing University of Civil Engineering and Architecture, Beijing 100044, China

摘要

摘要: 针对透水砖系统堵塞失效对径流控制效果衰减的问题,考察了透水砖堵塞失效演化全过程时雨水径流重金属的输出变化特征,并采用综合污染指数法对不同堵塞节点透水砖铺装径流重金属污染进行风险评价。结果表明:透水砖堵塞程度增加可显著增大其表面径流溶解态和颗粒态重金属输出,且在透水砖堵塞程度达到30%后的场次降雨输出的重金属浓度明显上升;不同堵塞程度透水砖径流中重金属均出现了初期冲刷现象,初期冲刷效应强弱与透水砖堵塞程度呈正相关。透水砖堵塞前期各历时径流重金属污染风险较低,但随着堵塞加剧初期径流重金属污染风险变高,其中Cd和Pb是主要风险源。
- 透水砖铺装 /
- 堵塞 /
- 重金属 /
- 风险评价
Abstract: Aiming at the attenuation of the control effect on runoff during blockage of a permeable brick system,the output characteristics of heavy metals in permeable brick runoff during the whole process of blockage were investigated,and the integrated pollution index method was adopted to evaluate the pollution risk of heavy metals in the permeable brick runoff with different blockage degrees.The results showed that the output concentration of the dissolved and particulate heavy metals in permeable brick runoff got increased with the increase of blockage degree of permeable brick,and the output concentration of heavy metals in permeable brick runoff increased significantly after the blockage degree of permeable brick reached 30%.The first flush effect of heavy metals in permeable brick runoff during the whole process of blockage all appeared,and the first flush effect of heavy metals in permeable brick runoff was positively correlated with the blockage degree of permeable brick.The heavy metal pollution risk of runoff during the whole runoff period was low in the early stage of permeable brick blockage,but with the increase of blockage,the heavy metals in initial runoff showed high pollution risk,in which Cd and Pb were the main pollution risk sources.
- permeable brick /
- blockage /
- heavy metals /
- risk evaluation

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参考文献(19)

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