工业水处理
工業水處理
공업수처리
Industrial Water Treatment
2015年
10期
24-27
,共4页
郭旭颖%范戈%白润才%董艳荣
郭旭穎%範戈%白潤纔%董豔榮
곽욱영%범과%백윤재%동염영
优化混凝%矿坑废水%低浊度
優化混凝%礦坑廢水%低濁度
우화혼응%광갱폐수%저탁도
optimized coagulation%pit wastewater%low turbidity
针对某煤矿废水处理站对低浊废水混凝处理效果不佳、混凝剂投加量大等问题,通过正交试验及单因素试验对混凝条件进行了优化.试验结果表明,最优混凝操作条件:以PAC为混凝剂,投加量为20 mg/L;原水pH为8;依次快速(250 r/min)搅拌 30 s,中速(100 r/min)搅拌 8 min,慢速(40 r/min)搅拌 12 min;在快速搅拌之后投加PAM,投加量为0.5 mg/L,投加时间为30 s. 在最优混凝条件下,低浊废水的SS去除率高达90%以上.
針對某煤礦廢水處理站對低濁廢水混凝處理效果不佳、混凝劑投加量大等問題,通過正交試驗及單因素試驗對混凝條件進行瞭優化.試驗結果錶明,最優混凝操作條件:以PAC為混凝劑,投加量為20 mg/L;原水pH為8;依次快速(250 r/min)攪拌 30 s,中速(100 r/min)攪拌 8 min,慢速(40 r/min)攪拌 12 min;在快速攪拌之後投加PAM,投加量為0.5 mg/L,投加時間為30 s. 在最優混凝條件下,低濁廢水的SS去除率高達90%以上.
침대모매광폐수처리참대저탁폐수혼응처리효과불가、혼응제투가량대등문제,통과정교시험급단인소시험대혼응조건진행료우화.시험결과표명,최우혼응조작조건:이PAC위혼응제,투가량위20 mg/L;원수pH위8;의차쾌속(250 r/min)교반 30 s,중속(100 r/min)교반 8 min,만속(40 r/min)교반 12 min;재쾌속교반지후투가PAM,투가량위0.5 mg/L,투가시간위30 s. 재최우혼응조건하,저탁폐수적SS거제솔고체90%이상.
Aiming at the problems that the coagulation treatment effect of low-turbidity pit wastewater in a coal min-ing wastewater treatment plant is not good,the coagulant dosage is too high,etc.,the coagulation conditions have been optimized by orthogonal tests and single factor tests. The experimental results show that the optimal coagulation operation conditions are as follows:using PAC as coagulant,its dosage is 20 mg/L,raw water pH=8,stirring in turn, quick-speed stirring (250 r/min) for 30 s,medium-speed stirring (100 r/min) for 8 min,slow-speed stirring (40 r/min) for 12 min,and after quick stirring adding PAM dosage=0.5 mg/L for 30 s. Under the optimum coagulation condi-tions,the removing rate of SS of the low-turbidity wastewater is as high as 90%.