【摘要】 根据不同煤种矿井水的水质特性,进行了矿井水的混凝试验研究。分别采用聚合氯化铝、三氯化铁及复合铝铁盐3种混凝剂进行烧杯试验,确定最佳混凝剂与最佳pH值范围,并通过正交试验确定最佳水力条件。结果表明,复合铝铁盐的适用范围最广,最佳pH值范围为7.0~9.0,最佳水力条件:①褐煤矿井水混合G值256.5s-1,GT值15390,反应G值22.9s-1,GT值36000;②焦煤矿井水混合G值256.5s-1,GT值15390,反应G值38.0s-1,GT值49590;③无烟煤的混合G值256.5s-1,GT值46170,反应G值22.9s-1,GT值66780。由于不同煤种的表面特性不同,混凝剂的最佳投药量和反应GT值随煤化程度的增加而增加。更多还原

【Abstract】 According to the water characteristics of different coal type mine water, a research on the coagulation experiment was conducted. The beaker experiments were conducted individually with PAC, FeCl3 and PAFC to ensure the optimum coagulant with the optimum pH range. The optimum hydraulic condition was confirmed with the orthogonal test. The results showed that the PAFC had the most widely sphere of applications and the optimum pH range was 7.0~9.0. The optimum hydraulic condition for lignite, coking coal and anthracite mine water respectively: the mixed G is 256.5 s-1 and the mixed GT is 15 390; the reactive G is 22.9 s-1 and the reactive GT is 36 000; the mixed G is 256.5 s-1 and the mixed GT is 15 390; the reactive G is 38.0 s-1 and the reactive GT is 49 590;the mixed G is 256.5 s-1 and the mixed GT is 46 170; the reactive G is 22.9 s-1 and the reactive GT is 66 780. For of different coal type has different surface characteristics, the best dosage of the coagulant and the reactive GT value will be increased with increasing of coal rank.更多还原