高浊度矿井水资源化处理条件优选试验研究

摘要

In order to solve the problem of waste of resources caused by the direct discharge of high turbidity mine water. Aiming at the quality and utilization status of the mine water in Jinniu coal mine, a resource optimization treatment condition experiment was conducted to study the effect of different coagulant and put amount on the turbidity of the mine water, and the optimal delivery time of the flocculant was analyzed. Research shows: The original turbidity was 175.4 NTU in mine water. Using PAC as coagulant and 0.8 mL/L of mass concentration of 0.8 mL/L as coagulant. Moreover, the best coagulation ability and effluent turbidity were achieved when PAC delivery time exceeded PAM delivery time 90 s. the turbidity of the effluent is 2.9 NTU, and the turbidity removal rate is 98.3％.%为了解决高浊度矿井水直接排放造成资源浪费的问题, 针对晋牛煤矿矿井水水质和利用现状, 进行了资源化处理条件优选试验, 研究了不同混凝剂及投放量对水样浊度的影响, 并对絮凝剂的最佳投放时间进行分析.研究表明:原浊度为175.4 NTU的矿井水, 采用投放浓度为1.5m L/L的聚合氯化铝 (PAC) 作为混凝剂和浓度0.8 mL/L的聚丙烯酰胺 (PAM) 作为絮凝剂配合使用, 并且PAC投放时间要超前PAM投放时间90 s时混凝能力最佳, 出水浊度为2.9 NTU, 浊度去除率达98.3％, 总投放成本大幅降低但能够保证出水水质, 能够实现高浊度矿井水的资源化.