煤矿酸性水综合治理研究

Study on comprehensive treatment of acid water in coal mine

根据现场调查和已有数据分析可知,以山底河为代表的北方缺水地区煤矿酸性水污染具有以下特征:①多以废弃矿井采空酸性废水溢出为主,酸性水流经区域形成二次叠加污染;②缺少清水源,水量不足,河流自净能力减弱甚至完全丧失;③酸性老窑水、矿排水、工业废水、生活污水等多污染权重并存,污染因素变化复杂。针对以上特点提出相应治理措施:帷幕注浆,源头减量;分段削减,生物优先;分类治理,有的放矢。

According to the field investigation and the existing data analysis,the acid water pollution of coal mines in the northern water-scarce area that were represented by the Shandihe River,has the following characteristics:①The acid water spills mainly from the mining-out of abandoned mines,and the acid water flows through the area to form secondary superimposed pollution;②Lack of clean water,water shortage,river self-purification capacity weakened or even completely lost;③Acid kiln water,mine drainage,industrial wastewater,domestic sewage and other pollution weight coexist,pollution factors change complex.According to the above characteristics,the corresponding treatment measures lincluding curtain grouting,source reduction;Segment reduction,biological priority;classification management,have a target were put forward.