煤矿矿井废水混凝处理工艺条件研究  

Study on influencing factors of coagulation treatment of coal mine wastewater

作　　者：薛俊杰[1] 黄显怀[1] 王坤[1] 韩富涛 李守好 

机构地区：[1]安徽建筑大学水污染控制与废水资源化安徽省重点实验室,合肥230601 [2]淮矿西部煤矿投资管理有限公司,内蒙古鄂尔多斯017000

出　　处：《工业用水与废水》2014年第1期14-16,21,共4页Industrial Water & Wastewater

基　　金："十二五"国家科学支撑计划项目(2012BAJ08B01);淮南矿业集团科研项目

摘　　要：以煤矿矿井废水为研究对象,进行混凝处理试验研究。采用单因素试验考察了PAC和PAM投加量、pH值对浊度去除率的影响,采用正交试验方法选择了混凝处理的最佳水力条件和最佳工艺条件。结果表明:PAC和PAM投加量、pH值对浊度去除率均有不同程度的影响;在不调节矿井废水pH值的情况下,最佳水力条件为快速搅拌速率为200 r/min,时间为2 min;慢速搅拌速率为30 r/min,时间为20 min;最佳工艺条件为PAC的投加量约为60 mg/L,PAM的投加量约为0.8 mg/L,二者联合使用对浊度的去除率高达95%以上。A test on coagulation treatment of coal mine wastewater was carried out. The influences of PAC dosage, PAM dosage and pH value on turbidity removal were investigated using single factor test, and the optimal hydraulic condition and technological condition of the coagulation treatment were determined through an orthogonal experiment. The results showed that： dosage of PAC and PAM and pH value had certain degree influence on turbidity removal; under the condition that the pH value of the coal mine wastewater had not been adjusted, the optimal hydraulic condition was： the speed and time of rapid agitation were 200 r/rain and 2 rain respectively; the speed and time of slow agitation were 30 r/min and 20 min respectively. The optimal technological condition was： the dosage of PAC and PAM were about 60 and 0.8 mg/L respectively; with the combined use of them, the removal rate of turbidity could reach above 95%.

关 键 词：煤矿矿井废水 混凝 浊度 水力条件 

分 类 号：X752.031[环境科学与工程—环境工程]