磷矿粉修复重金属污染土壤的研究进展

Research progress of remediation of heavy metal-contaminated soils by phosphate rock

重金属污染土壤的化学钝化修复技术可以有效控制重金属对植物及环境的危害。不同的改良剂对重金属污染土壤的改良效果不同,已有的研究表明难溶性磷矿粉是较好的选择。磷矿粉是一种性价比很高的改良剂,而且不会对环境造成破坏。总结了磷矿粉修复重金属污染土壤的化学机制和影响因素,重点综述了近年来不同粒径磷矿粉、改性磷矿粉修复重金属污染土壤的研究进展,旨在为重金属污染土壤的修复研究提供参考。

In situ chemo-immobilization of heavy metals in contaminated soils could effectively control the hazard of heavy metals to plants and the environment.Different modifiers have different effects on the remediation of heavy metal-contaminated soils.Previous studies showed that insoluble phosphate rock was a good choice.Phosphate powder was a kind of cost-effective modifier,and would not cause damage to the environment.The chemical mechanism and influential factors of remediation of heavy metal-contaminated soils by phosphate rock were summarized.The research progress of the remediation of heavy metal-contaminated soils by different particle diameters of phosphate rock,modified phosphate rock was reviewed.The aim of the review was to provide reference for the remediation of heavy metal-contaminated soils.