土壤中重金属铬(Ⅵ)污染修复技术的研究进展

Research Progress on Remediation Technique for Hexavalent Chromic-contaminated Soil

我国土壤铬(Cr)污染的形势较为严峻,目前对重金属Cr(Ⅵ)的治理迫在眉睫。本文通过对铬污染的来源、修复机理、形态转化与毒性危害进行阐述,论述了目前多种常见的土壤重金属铬污染修复技术,通过分析各方法的运用实例与实验室试验结果,指出土壤铬污染的主要问题以及传统方法、新型方法和联合修复方法的发展与前景。相比而言,一些新型修复方法和联合修复可避免单一修复的不足之处,其修复效果较好、经济效益高、产生的不利影响较小。

The situation of chromium(Cr)-contaminated soil in China is more severe.At present,it is urgent to remediate the Cr(Ⅵ)-contaminated in soil.This paper reviewed the source,remediated mechanisms,morphological transformation and toxic of Cr pollution.Based on this,many common remediated techniques of Cr-polluted soil are discussed.By analyzing the application examples and laboratory tests of various methods,the development and prospect of traditional methods,new methods and combined remediated methods and the main problem of Cr polluted soil are pointed out.In contrast,some new remediated methods and combined remediation could avoid the shortcomings of single remediation,with better remediated effect,high economic benefit and less adverse impact.