钝化材料修复土壤重金属污染研究进展

重金属污染土壤的修复是一项长期而艰巨的任务。作为化学修复的一种，钝化技术成本低、高效省时，而被广泛应用。从石灰性物质、含磷材料、黏土矿物、生物炭、其他材料五大方面归纳了钝化修复的种类，并介绍了钝化修复的作用机制，最后分析了钝化剂修复土壤中重金属的影响因素——钝化剂的投加量、pH、钝化剂的稳定性。基于目前研究现状以及钝化修复存在的问题，对钝化修复今后的发展趋势进行了展望。

Research Progress on Remediation of Heavy Metal Pollution in Soil with Passivators

Remediation of heavy metal contaminated soil is a long-term and arduous task. At present, soil heavy metal pollution remediation technology is mainly divided into physical remediation, chemical remediation and bioremediation. As a kind of chemical repair, passivation technology is widely used because of its low cost, high efficiency and time saving. This paper summarizes the types of passivation remediation from five aspects : calcareous materials, phosphorus-containing materials, clay minerals, biochar and other materials, and introduces the mechanism of passivation remediation. Finally, it analyzes the influencing factors of passivation remediation of heavy metals in soil-the dosage of passivation agent, pH value and the stability of passivation agent. Based on current research status and problems of passivation repair, the future development trend of passivation repair was prospected.