聚二甲基二烯丙基氯化铵与聚合硫酸铁复合絮凝剂的制备及絮凝性能研究  

Study on preparation and coagulation properties of poly (dimethyldiallylammomum chloride)-polyferric sulfate composite flocculant

作　　者：刘立华[1] 龚竹青[2] 

机构地区：[1]湖南科技大学化学化工学院,湖南湘潭411201 [2]中南大学冶金物理化学研究所,湖南长沙410083

出　　处：《湖南科技大学学报（自然科学版）》2005年第4期90-94,共5页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：湖南科技大学博士基金项目(E54155)

摘　　要：在一定温度下,将聚二甲基二烯丙基氯化铵(PDMDAAC)溶解在聚合硫酸铁(PFS)中,制成稳定均相复合溶液考察了温度、PDMDAAC的特性粘数对复合絮凝剂制备的影响,及复合絮凝剂对硅藻土模拟悬浊液的除浊性能和絮体ζ电位变化,结果表明：在60℃下制备的液体复合絮凝剂具有良好的稳定性；与PFS和PDMDAAC比较,PDMDAAC-PFS复合絮凝剂具有更优的除浊性能,及与PFS类似的较宽的最佳投药范围和pH适用范围；增效的原因,除增强电中和、吸附架桥和卷扫絮凝作用外,还有特性吸附和专属化学作用,图6,参9。The stable homogeneous phase composite flocculant solution of poly（dimethyldiallylammonium chloride）- polyferric sulfate （PDMDAAC - PFS） was prepared by dissolving PDMDAAC in PFS solution at a certain temperature. The effects of temperature and intrinsic viscosity of PDMDAAC on the preparation of liquid composite flocculant, and the removal rates of turbidity for diatomite suspension and the zeta potential changes of floccule were investigated. The results showd that liquid composite flocculant prepared under 60℃ have a good stability. The composite flocculant have better removal rates for turbidity than PFS and PDMDAAC, and wide optimum dosing and suitable pH ranges like PFS. Besides charge neutralization, adsorption-bridge formation and sweep-floc action enhancing, there are still specific adsorption and exclusive chemical action for its synergism. 6figs., 9refs.

关 键 词：聚二甲基二烯丙基氯化铵(PDMDAAC) 聚合硫酸铁(PFS) 复合絮凝剂 ξ电位 絮凝性能 

分 类 号：X506[环境科学与工程—环境工程]