Research Progress on Treatment of Chromium Contaminated Soil by Leaching Method
Heavy metal chromium not only pollutes groundwater after entering the soil,but also accumu-lates in plants and endangers human health.Leaching technology has the advantages of simple operation,cost saving and remarkable effect.It is a commonly used treatment method for chromium contaminated soil.This paper summarized the current research on the leaching of chromium-contaminated soil,intro-duced the leaching principle,application and existing problems of various eluents,and analyzed the fac-tors affecting the leaching effect,such as soil properties,eluent properties,eluent pH value,leaching time,liquid-solid ratio and enhancement methods.It was pointed out that the leaching of chromium-con-taminated soil has problems such as low efficiency of chromium leaching in cohesive soil,insufficient eco-logical risk assessment of soil after leaching,and insufficient treatment and resource utilization of leaching wastewater.In the future,it is necessary to strengthen the research on these problems.
chromium pollutionsoil leachingtype of eluentinfluencing factors
万方数据
维普
