水包水型阳离子乳液絮凝剂的合成及其应用

Preparation and Application of Water-in-Water Type CPF Emulsion as Flocculation

以丙烯酰胺(AM)和丙烯酰氧乙基三甲基氯化铵(DAC)为主要单体在聚乙二醇20000(PEG 20000)溶液中进行自由基共聚合成了固含量高、絮凝效果好且速溶的水包水型阳离子聚丙烯酰胺乳液。在充氮气30 min,60℃下反应5 h,AM和DAC质量百分数分别为20%和0.5%的最优条件下,合成的阳离子絮凝剂(CPF)乳液对生化污水上清液透光率达到95%。红外光谱分析表明,聚合物分子结构中含有AM和DAC链节。

Water-in-water type cationic polyacrylamide emulsions（CPF） were synthesized by radical copolymerization of AM and DAC as the main monomers in the PEG solution in the interest of development of flocculation which presented higher solid content, instant and outstanding performances in application. The optimum conditions to synthesis cationic polyacrylamide emulsion were wAM=0. 2,wDAC =0. 005, nitrogen gas charging 30 min, polymerization temperature 60 ℃ and reaction time 5 h. It was found that the new type flocculation increases the degree of transparency of biochemical wastewaters up to 95%. Infrared spectrum shows the synthesized polymer chain contents acrylamide chain unit and DAC chain unit.