EVALUATION OF SHALLOW GROUNDWATER POLLUTION IN LIAOYANG-ANSHAN SECTION OF LOWER LIAOHE RIVER PLAIN

With the expanded city scale, accelerated urbanization and improved industrialization, regional surface water and groundwater are polluted in varying degrees and freshwater resources for human survival is threatened. Since 1990s, China has focused on researches about agricultural pollution and organic contamination. Considering the situation in the study area, the evaluation mainly adopts single factor pollution index and comprehensive pollution index methods. After a comprehensive analysis on the various methods of groundwater evaluation, the evaluation selects single pollution index and comprehensive evaluation index of groundwater pollution for the region. The author collects 110 groups of shallow groundwater samples in the study area, and tests 35 indicators for each sample. The evaluation results show that 67.4% of the shallow groundwater are subject to contamination in different degrees, which basically reflects groundwater pollution status and provides the basis for targeted treatment in the study area.