Research on Leaching Rehabilltation of Heavy metal Contaminated Soil

With the development of heavy industry, the problem of soil contaminated by heavy metals has become increasingly prominent. Therefore, it is of great significance to find an efficient method to treat soil contaminated by heavy metals. Soil leaching technology is a common technology to remediate contaminated soil by chemical principles. The specific operation is to inject chemical solvents, such as inorganic eluents, complexing agents and surfactants, which can promote the dissolution or migration of soil pollutants into the contaminated soil, so as to dissolve, separate and treat the pollutants from the soil. It has the advantages of good repair effect and short repair cycle, and has attracted wide attention. In this paper, the sources of heavy metal contaminated soil, the existing soil remediation technology, and the research progress of heavy metal contaminated soil leaching remediation technology are discussed. It is hoped that this paper can provide reference for the remediation of heavy metal contaminated soil.