摘要
铬(Cr)是最常见的重金属污染物之一,最常用的修复方法是化学还原法,即利用化学还原药剂将六价铬Cr(Ⅵ)转化为三价铬Cr(Ⅲ),降低其迁移性和毒性,从而实现污染控制的目的。多硫化钙(calcium polysul?de:CPS)作为一种新型的化学还原剂,近年来由于具有操作简便、成本低廉、去除效率高等优点受到广泛讨论和研究。该文综述了其在污染土壤和地下水修复中的典型应用、影响条件及技术联用等,旨在为多硫化钙的应用和工程实践提供理论依据。
Chromium is one of the most common heavy metal contaminants.Reduction immobilization is the most commonly used remediation method,which uses chemical reductant to convert hexavalent chromium Cr(VI)into trivalent chromium Cr(Ⅲ)by reducing its mobility and toxicity.Calcium polysulfide(CPS),as a new chemical reductant,has been widely discussed and studied in recent years due to its advantages of simple operation,low cost and high removal efficiency.The preset paper reviews its typical application,affecting factors and hyphenated action in the remediation of contaminated soil and groundwater.The aim was to provide a theoretical basis for the practical application of calcium polysulfide.
作者
朱巧红
李明
程寒飞
Zhu Qiaohong(MCC Huatian Nanjing Engineering & Technology Corporation,Nanjing 210000,China;MCC Huatian Engineering & Technology Corporation,Ma’anshan 243000,China)
出处
《安徽农学通报》
2019年第9期126-128,共3页
Anhui Agricultural Science Bulletin
基金
江苏省自然科学基金资助项目(BK20160155)
关键词
多硫化钙
六价铬
土壤
地下水
化学还原
Calcium polysulfide
Hexavalent chromium
soil
Groundwater
Reduction immobilization
