Study on Extraction Treatment Technology of Heavy Metal Polluted Groundwater in an Industrial Solid Waste Landfill
This paper analyzes the concentration levels of 5 heavy metals in the groundwater of an industrial solid waste landfill,investigates the effect of groundwater extraction treatment on the removal of heavy metals,and discusses the optimization measures in the operation of extraction treatment process.The results showed that the average mass concentrations of Fe and Mn were 0.6 mg/L and 0.4 mg/L,respectively,and the maximum detectable concentrations of As,Ni and Hg were less than 0.1 mg/L.The concentration of heavy metals in groundwater exceeded the standard by 0.5～14.6 times,and the rate exceeded the standard by 5%～20%,which mainly occurred in layer I.After extraction treatment,the concentration of heavy metals in groundwater as a whole showed a trend of first increasing and then decreasing,and the removal rate was 0%～60%,respectively.During the subsequent system operation,the concentration change of heavy metals in groundwater should be regularly monitored to judge the long-term treatment effect.
万方数据
维普
