The Effect of Different Leaching Agents on Remediation of Heavy Metal Contaminated Soil

Soil leaching is considered to be an effective, rapid and economical technology to reduce the concentration of heavy metals in soil, so as to repair the soil contaminated by heavy metals. Soil texture, type of eluant, leaching time and solid-liquid ratio will affect the leaching efficiency, among which the choice of eluant is one of the most important factors.In this paper, the removal effects of different kinds and different combined forms of eluents, such as single eluant and compound eluant, on heavy metals in soil are expounded.It is expected to provide reference value for the remediation of different types of heavy metal contaminated soil by optimizing leaching technology.