NUMERICAL ANALYSIS OF HEAVY METAL TRANSPORT PROCESS IN A SLUDGE LANDFILL SUBJECTED TO RAINFALL

摘要

There are many landfills without antiseepage barriers in China. The problem of pollutions contaminating surrounding soil and groundwater has caused wide public concern. But under rainfall, how the pollutions in landfill migrate into surrounding area, this process within the contaminated sites is very complex, many problems are not clear. In this paper, Shenzhen Fuyong sludge landfill as research object, the process of pollutions migration-dispersion under rainfall infiltration in saturated-unsaturated seepage field has been numerical simulated, and the basic law of heavy metal Cu migration and transport into surrounding strata under rainfall infiltration has been exposited. The calculation result can provide references for prevention and control contamination in this type of landfill.