河道底泥重金属污染的原位修复方法综述  

An in-situ remediation technology for heavy-metal-contaminated river sediments

作　　者：曹丽亚 CAO Li-Ya(Shanghai Yaxin Construction Engineering Co.,Ltd.Shanghai 200436,China)

机构地区：[1]上海亚新建设工程有限公司,上海200436

出　　处：《上海国土资源》2018年第4期44-47,共4页Shanghai Land & Resources

基　　金：上海市规划和国土资源管理局科研项目"上海市污染场地修复治理事后管理办法研究"(gtz2018045)

摘　　要：随着城市化的推进,湖泊、河流等水系受到了不同程度的污染。底泥是水中各类污染物的主要蓄积地,底泥中各种污染物,尤其是重金属含量超标,会对水体、水生生物及人类造成严重危害。底泥中的重金属主要蓄积在表层,故水体环境一旦发生变化,底泥中的重金属便容易重新释放,造成二次污染,由此凸显了原位修复技术的优势。重金属污染底泥的原位修复技术旨在不改变污染底泥空间位置的条件下对底泥进行修复,该技术具有对原有环境影响小、成本低、不额外占用空间等优势,在未来的污染底泥修复中呈现出较大的潜力。本文对当前国内主要水系底泥的重金属污染状况以及修复技术进行分析概述,同时重点介绍底泥重金属污染的原位修复技术,并对底泥重金属污染原位修复技术的应用与发展进行展望。Water systems such as lakes and rivers have been polluted to varying degrees with the advancement of urbanization. Sediment is the main accumulation area of various pollutants in water. Excessive pollutants, particularly heavy metals, in sediment will cause serious damage to water bodies, aquatic organisms, and humans. The heavy metals in sediment mainly accumulate in the surface layer;thus, once the water environment changes, the heavy metal in the sediment is easily released again, causing secondary pollution, which highlights the advantages of an in-situ remediation technology. The in-situ remediation of heavy-metal-contaminated sediment aims to restore the sediment under the condition that the spatial position of the contaminated sediment does not change. This technology has the advantages of a limited impact on the original environment, low cost, and no extra space occupation, and presents great potential in future remediation of contaminated sediment. The cause of heavy metal pollution in sediments and its remediation technology were determined in this study. At the same time, an in-situ remediation technology for heavy metal pollution in sediment was introduced. Finally, the application and development of the in-situ remediation technology for heavy metal pollution in sediment were presented.

关 键 词：河道底泥 重金属污染 原位修复 

分 类 号：X142[环境科学与工程—环境科学]