土壤重金属污染钝化修复研究进展

Research progress on passivation remediation of soil heavy metal pollution

如何有效治理和修复重金属污染土壤,保障粮食安全成为农业和环境生态领域的研究热点。在优质耕地资源短缺与粮食生产需求的突出矛盾背景下,原位钝化技术被认为是解决土壤重金属污染修复治理的切实可行,且能保证作物安全生产的修复措施。文章从钝化剂种类、钝化修复技术应用中存在的问题等方面综述了重金属污染土壤钝化修复研究的现状,分析了影响土壤重金属钝化修复效果的因素,并对未来重金属污染土壤的钝化修复研究思路提出了建议,以期为科学、合理、高效使用钝化剂和钝化修复技术提供理论指导,实现受污染耕地的安全利用。

How to effectively control and repair heavy metal contaminated soil,and ensure food security has become a research hotpot in the field of agriculture and environmental ecology.Under the background of the prominent contradiction between the shortage of high-quality arable land resources and the demand for food production,in-situ passivation technology is considered to be a practical and feasible restoration technology that can ensure the safe production of crops.This paper summarized the current research status of the passivation remediation technology of heavy metal contaminated soil at the aspects of type of passivation materials and the existing problems of passivation remediation technology utilization.Meanwhile,the factors that affected the remediation effects were also analyzed,and suggestions for the future research on the passivation remediation of heavy metal contaminated soil were put forward.These results could provide theoretical guidance to utilize the passivation materials and passivation remediation technology scientifically,reasonably and efficiently,and realize the safety utilization of contaminated farmland.