Abstract:The production of CaCl2 chemical plant has been stopped because of environmental problems, and the soil and groundwater around the plant have been polluted to varying degrees. In order to grasp the content of pollution factors and the pollution of groundwater in contaminated soil, soil sampling points and groundwater monitoring points have been arranged, and the water samples collected by organic wells around the plant area have been used for indoor testing, analysis and research. It is concluded that there are Ca2+ and Cl enrichment in the depth range of 60~300cm around the plant. In view of the natural adsorption and selfpurification ability of the soil, under the current conditions, the groundwater pollution situation in the plant area and surrounding areas is less affected. Through the pumping test, water seepage test and dispersion test, the range of influence of pollutants has been delineated, the degree of influence of pollutants has been ascertained, the prediction analysis of the influence of pollutants has been carried out, and data support has been provided for risk assessment and rehabilitation of contaminated land in subsequent areas.
