净水技术2024，Vol.43Issue(5)：45-52,8.DOI:10.15890/j.cnki.jsjs.2024.05.005
河湖沉积物中重金属镉污染治理技术及应用
Technology Research and Application in Heavy Metal Cd Pollution Control in Rivers and Lakes Sediments
摘要
Abstract
With the rapid development of modern industry and agriculture,activities such as mining,smelting and agricultural production have gradually increased,and the heavy metal cadmium(Cd)discharged into the environment has also increased.As a"deposit bank",the problem of cadmium pollution in lake sediments has become increasingly serious.Cd enriched in the sediment of rivers and lakes is easy to be re-released into water body as the environment conditions changed,and can be absorbed and utilized by aquatic organisms,causing harm to human health through the food chain.At present,rivers and lakes present different degrees of Cd pollution in the sediment,and Cd has become one of the most serious heavy metal in sediment,so it is urgent to treat and dispose the sediment with Cd pollution.Therefore,this study summarizes the status of Cd pollution and potential ecological risks in rivers and lakes sediments,so as to describes the development,mechanism and application of in-situ remediation technology for Cd polluted sediment.The technology prospects of Cd polluted sediment is predicted,intending to provide technical reference for the remediation of Cd polluted sediment:(1)It is necessary to study how to systematically analyze the status quo and potential ecological risks of Cd polluted sediment,and to specify the standard value of Cd in different environments;(2)The regeneration and separability of carbon-based adsorbents need to be solved;(3)Pilot experiments and large-scale application are conducive to the study of phytoremediation technology for Cd polluted sediment;(4)The combination of microorganisms and aquatic plants may be an important research direction for remedying Cd polluted sediment in the future.关键词
沉积物/重金属镉/污染现状/潜在生态风险/治理技术/植物修复Key words
sediment/heavy metal cadmium(Cd)/pollution status/potential ecological risk/control technology phytoremediation分类
环境科学引用本文复制引用
朱吉颖,刘军武,方迎春,吴振斌,张义..河湖沉积物中重金属镉污染治理技术及应用[J].净水技术,2024,43(5):45-52,8.基金项目
矿山场地污染修复湖南省工程研究中心开放基金重点项目(KS-2021KDJJA01) （KS-2021KDJJA01）
