重金属污染土壤动电修复技术研究进展与应用前景

本文综述了动电修复技术的原理及其在受重金属污染土壤修复的应用。重金属污染土壤的动电修复是指通过直流电场力的作用 ,溶解在土壤中的重金属污染物通过 ` 电迁移、电渗流、电泳和自由扩散等过程穿过土壤移向电极区 ,富集在电极区的重金属污染物用工程化的收集系统收集起来进行处理 ,从而达到去除的目的。该技术具有费用低且处理较彻底、不需挖掘被处理的土壤、所需的化学试剂少、工程操作方便和不影响周围的生态环境等优点 ,是一门较有发展潜力的重金属污染土壤修复技术 ,近年来已引起环境科学者的广泛关注。

ELECTROKINETIC REMEDIATION OF HEAVY METAL CONTAMINATED SOIL AND ITS APPLICATION

This paper reviewes the principles of electrokinetic remediation of heavy metal contaminated soil and its application. It applies low-level direction curren to soils, contaminations of dissoluted heavy metal move toward electrodes by electromigration, electroosmosis, electrophoresis and diffusing. The contaminations are treated by collection and engineering methods. Its advantages include low cost needed and clean thoroughly, in-situ removal of heavy metal contanminated soil, less chemicals needed, simple in operation and does not disrupt eco-envirnorment.Electrokinetic remediation is a potential remediation technology, and attracts the attention of environmental scientists.