新型复合混凝剂(PFC/FeCl_3-PDMDAAC)混凝效果研究  

Study on coagulation efficiency of new composite coagulants (PFC/FeCl_3-PDMDAAC)

作　　者：邓国利[1] 

机构地区：[1]胜利石油管理局水利处,山东东营257097

出　　处：《供水技术》2007年第3期26-30,共5页Water Technology

摘　　要：将PFC/FeCl_3分别与聚二甲基二烯丙基氯化铵(PDMDAAC)复配成一系列具有不同碱化度B、不同PDMDAAC质量分数P的新型复合混凝剂(PFC/FeCl_3-PDMDAAC)。研究了该混凝剂的混凝效果,考察了B、P值及不同水质条件下PFC/FeCl_3-PDMDAAC投加量对混凝效果的影响。结果表明:PFC/FeCl3-PDMDAAC的混凝效果优于PFC和PDMDAAC;低B值的PFC-PDMDAAC混凝效果较好;当原水有机物含量及浊度较低时,宜采用低P值的复合混凝剂;在有机物及浊度均较高时,宜采用高P值的PFC-PDMDAAC和低P值的FeCl_3-PDMDAAC;同时,高锰酸钾预氧化可提高其对高锰酸盐指数的去除效果。关键词:复合絮凝剂(PFC/FeCl_3-PDMDAAC);PFC;PDMDAAC;除浊;New composite coagulants(PFC/FeCl_3-PDMDAAC)were made up from PFC/FeCl_3 and PDMDAAC with different alkanility(B)and PDMDAAC contents(P)respectively.Efficiency of these coagulants was studied,effect of PFC/FeCl_3-PDMDAAC dosage was investigated on efficiencies of coagulation under various B and P values and different water qualities.The results show that efficiency of PFC/FeCl_3-PDMDAAC is superior to PFC and PDMDAAC,better result is obtained with PFC-PDMDAAC with lower B value.PFC/FeCl_3-PDMDAAC with low P value is preferred when raw water contains low organic matter and low turbidity.PFC-PDMDAAC with high P value and FeCl_3-PDMDAAC with low P value are suitable for raw water contains high organic matter and high turbidity.Meanwhile KMnO4 preoxidation will enable to improve the removal efficiency of permanganate index.

关 键 词：复合絮凝剂(PFC/FeCl3-PDMDAAC) PFC PDMDAAC 除浊 高锰酸盐指数 

分 类 号：TU991.22[建筑科学—市政工程]