处理低温低浊滦河原水的混凝剂选择试验  

Selection of coagulant for treatment of raw water with low temperature and low turbidity from Luanhe River

作　　者：李爱斌[1,2] 付春明[2] 王瑾[2] 

机构地区：[1]天津大学环境科学与工程学院,天津300072 [2]天津市公用事业设计研究所,天津300100

出　　处：《供水技术》2011年第4期10-13,共4页Water Technology

摘　　要：采用FeCl3单铁、FeCl3混合液、聚合氯化铝(PAC)作为混凝剂,考察了不同投加条件对滦河原水的处理效果。结果表明:采取FeCl3混合液和PAC复合投加方式,对浊度和CODMn的去除效果最好,最佳投加量为10 mg/L FeCl3混合液(铁碱比为1∶1)+2.5 mg/L PAC,对应的药剂成本为0.013 1元/m3。如果缺少复合投加的条件,也可以单独投加10 mg/L FeCl3混合液(铁碱比为1∶2.0)。水厂实际运行中,可根据水质的变化适当调整投加量。Treatment efficiencies of raw water from coagulants were investigated with FeCl3 , FeCl3 mixing solution Luanhe River under various dosages of and polyaluminum chloride （ PAC ）. The results showed that best removal of turbidity and CODMn could be obtained with mixed addition of FeCl3 mixing solution and PAC. The optimal dosages were 10 mg/L FeCl3 mixing solution （iron and sodium silicate volume ratio of 1 ： 1 ） and 2.5 mg/L PAC, and the chemical cost was O. 013 1 Yuan/m3. The dosage of 10 mg/L FeCl3 mixing solution （ iron and sodium silicate volume ratio of 1 ： 2. O） was used if the optimal mixed dosage method could not be utilized. The dosage could be suitably adjusted according to the variation of water quality in practical operation of waterworks.

关 键 词：混凝剂 FeCl3单铁 FeCl3混合液 PAC 

分 类 号：TU991.24[建筑科学—市政工程]