某铁矿排土场地下水环境质量的模糊综合评价

Fuzzy comprehensive assessment of the underground water environmental quality in dumping area of some coal mine

本文采用模糊综合评价法,选取Cr^(6+)、NO_(3)^(-)N、Fe、Mn、Cl^(-)、SO_(4)^(2-)、溶解性总固体、总硬度8个主要指标为评价因素,评价某铁矿排土场地下水环境质量。分析结果表明:DX01、DX03、DX06监测点的水质达到地下水质量标准Ⅲ级以上标准,满足饮用水要求;DX02、DX04监测点的水质属Ⅳ级水质,DX05监测点的水质属Ⅴ级水质,主要污染物为硝酸盐,反映了地下水环境质量受人类活动影响较大,排土场淋溶水尚未对附近地区的地下水造成污染。

In this paper, fuzzy comprehensive evaluation method was used to evaluate the water quality of the dumping area of some coal mine with five major evaluation factors(Cr^(6+),NO_(3)^(-)N,Fe,Mn,Cl^(-),SO_(4)^(2-), total dissolved solids, total hardness). The results showed that water quality near DX01, DX03, DX06 monitoring points were Ⅲ degree and basically met the need of drinking water. It also showed that water quality near DX02, DX04 monitoring points were Ⅳ degree and water quality near DX05 monitoring points was Ⅴ degree. The major pollutant was nitrate, which reflected that water environmental quality was influenced by human activities and leaching water of the dumping area had not caused groundwater pollution.