道路雨水径流溶解性有机物对生物滞留系统重金属截留过程的影响

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英文篇名：Influence of dissolved organic matter on heavy metals removal in road runoff in bioretention systems 作者：朱英杰 ; 杜晓丽 ; 于振亚 ; 李翼 英文作者：ZHU Yingjie;DU Xiaoli;YU Zhenya;LI Yi;Key Laboratory of Urban Stormwater System and Water Environment,Beijing University of Civil Engineering and Architecture;Beijing Advanced Innovation Center for Future Urban Design;Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control,Beijing University of Civil Engineering and Architecture; 关键词：道路雨水径流 ; 溶解性有机物 ; 生物滞留系统 ; 重金属 ; 截留 英文关键词：road runoff;;dissolved organic matter;;bioretention system;;heavy metal;;interception 中文刊名：HJHX 英文刊名：Environmental Chemistry 机构：北京建筑大学城市雨水系统与水环境省部共建教育部重点实验室;北京未来城市设计高精尖创新中心;北京建筑大学北京市可持续城市排水系统构建与风险控制工程技术研究中心; 出版日期：2018-12-13 10:06 出版单位：环境化学 年：2019 期：v.38 基金：国家自然科学基金(51878024);; 北京市自然科学基金(8162016);; 北京市教委科研计划一般项目(KM201810016008);; 北京未来城市设计高精尖创新中心“海绵城市建设与水质水量风险防控”(UDC2016040100);; 北京建筑大学科学研究基金(KYJJ2017030)资助~~ 语种：中文; 页：HJHX201901005 页数：8 CN：01 ISSN：11-1844/X 分类号：55-62

摘要

以不同介质(砂,铁锰复合氧化物,给水厂铝污泥)的生物滞留系统为研究对象,考察道路雨水径流溶解性有机物(DOM)与重金属协同污染对生物滞留系统中Cu~(2~(6+))、Pb~(2~(6+))、Cr6~(6+)和Cd~(2~(6+))截留和释放过程的影响.结果表明,DOM协同污染促进了生物滞留系统对Cu~(2~(6+))和Pb~(2~(6+))的截留,去除率分别提高了1%—12%和2%—7%;抑制了对Cr6~(6+)和Cd~(2~(6+))的截留,去除率分别下降了3%—10%和1%—5%.对同一种介质生物滞留系统来说,前期累积重金属时径流DOM协同污染的生物滞留系统中重金属的释放量低于无DOM协同污染系统,使其淋出液重金属浓度降低.与惰性介质生物滞留系统相比,强化介质生物滞留系统对重金属的截留效果更易受到径流DOM协同污染的影响,且强化介质生物滞留系统所截留重金属更不易释放.
        Influence of dissolved organic matter( DOM) in road runoff on the removal and release Cu~(2~(6+))、Pb~(2~(6+))、Cr~(6+)and Cd~(2~(6+))in bioretention systems with different media( sand,Fe-Mn bioxide,alum sludge) were investigated. The results showed that DOM-heavy metals synchronous pollution increased the removal efficiency of Cu~(2~(6+))and Pb~(2~(6+))by 1%—12% and 2%—7%,and decreased theremoval efficiency of Cr~(6+)and Cd~(2~(6+))by 3%—10% and 1%—5%,respectively. The release of Cu~(2~(6+)),Pb~(2~(6+)),Cd~(2~(6+))and Cr~(6+)was inhibited in the bioretention systems with DOM-heavy metals synchronous pollution in the influent,reducing the concentration of heavy metals in the leaching solution.Compared to the bioretention system with common media,the interception of heavy metals was more easily influenced by DOM-heavy metals synchronous pollution in the bioretention systems with modified media. The heavy metals intercepted in bioretention with modified media were more difficult to release.

引文

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