Research on Leaching Remediation Technology for Heavy Metal Contaminated Soil
In order to evaluate the efficiency of different leaching agents in removing heavy metals(lead,cadmium,copper)from soil and their effects on soil physicochemical properties,this study used experimental methods,taking oxalic acid,nitric acid,sodium hydroxide,and EDTA as examples,to study the remediation effect of these leaching agents on heavy metal contaminated soil.By adjusting the concentration of the leaching agent,leaching time,and the ratio of the leaching solution to the soil,the leaching conditions were optimized,and the changes in physical and chemical properties such as soil pH,conductivity,and organic matter content before and after leaching were analyzed in detail.The results showed that the chelating agent EDTA had the best removal effect on lead,cadmium,and copper under optimized conditions.Reasonable selection of leaching agents and optimization of leaching conditions are of great significance for improving heavy metal removal efficiency and reducing negative impacts on soil quality.
heavy metal pollutionrinsing repair technologyrinsing agent
万方数据
维普
