阳离子聚丙烯酰胺的制备及其絮凝性能  

Preparation and Flocculating Performance of Cationic Polyacrylamide

作　　者：卢红霞[1] 刘福胜[1] 于世涛[1] 王庆军[1] 

机构地区：[1]青岛科技大学化工学院,青岛266042

出　　处：《应用化学》2008年第1期101-105,共5页Chinese Journal of Applied Chemistry

摘　　要：研究了氧化还原引发剂质量分数、偶氮类引发剂质量分数、阳离子度等因素对所制备的阳离子聚丙烯酰胺特性粘数的影响,探讨了pH值、阳离子聚丙烯酰胺特性粘数、阳离子度、用量等因素对污泥絮凝性能的影响。较佳的制备条件为:复合引发体系中(NH4)2S2O8和CH3NaO3S.2H2O总质量分数为0.0150%、偶氮类引发剂质量分数为0.0125%、单体质量分数为40%、阳离子度为40%,产物特性粘数为13.1 dL/g。在污泥pH=6.0、阳离子聚丙烯酰胺特性粘数为11.9 dL/g、阳离子度为40%、用量为0.027%的较佳絮凝条件下,污水的透光率达98.0%,絮凝率达66.0%,脱水率达70.0%。Cationic polyacrylamide was prepared, and effects of various factors such as oxidant-reductant concentration, azo-compound concentration, and cationic degree on the intrinsic viscosity of the product were studied. The influence of pH, the intrinsic viscosity, cationic degree, and the dosage of the cationic polyacrylamide on the flocculating performance were also studied. When the （ NH4 ） 2 S2O8 and CH3 NaO3 S · 2H2O concentrations were 0. 015 0% , the azo-compound concentration was 0. 012 5%, the monomer concentration was 40% , and the cationic degree was 40% , the intrinsic viscosity of the product was 13.1 dL/g. The obtained optimum flocculating conditions were that the pH of the wastewater was 6. 0, the intrinsic viscosity of the cationic polyacrylamide was 11.9 dL/g, the cationic degree was 40% , and the dosage was 0. 027%. Under the above conditions, the transmittance of visible light for the wastewater after treatment was 98.0%, and the flocculating rate was 66.0% , and the dewatering rate was 70. 0%.

关 键 词：阳离子聚丙烯酰胺 特性粘数 絮凝性能 

分 类 号：O632.6[理学—高分子化学]