关键词: 等效线, 等效线

Abstract: In order to study the pollution and the damage situation of coal mine waste water to groundwater, surface water and soil, and study the coal mine waste water pollution assessment to the crops, after the comprehensive investigation and analysis to the groundwater and surface water in the study area, and heavy metal content and related item testing analysis to water and soil polluted by the coal mine wastewater and quality evaluation, it indicated that: the quality of unpolluted groundwater (spring water) was good, the quality of No.3, No.9 and No.17 groundwater and surface water which was directly polluted was bad. Besides Pb, Cr and Hg, Cu, Cd, Zn, Ni, As, PH, SO42- projects beyond the local background value of groundwater, the largest up to 89 times (Cd), with the quality rating of high levels of pollution. Polluted water by drinking water standard discriminate out mainly for Cd Ni element and pH value, up to 9.8 times (Cd), with the quality rating of the severe pollution; Polluted water by Farmland irrigation water standard discriminate out for Cd, up to 4.4times, with the quality rating of the severe harm; polluted water by soil environmental quality secondary standard discriminate out for Cd, up to 10.5 times, with the quality rating of the severe harm, which had severe pollution to crops.