Application of a Novel Cationic Polyacrylamide as Flocculant in Treatment of Papermaking Wastewater

Yufeng Wang, Baoying Shi, Huiren Hu
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Abstract

As we known, now wastewater from papermaking has been the main source of water pollution in China. Polyacrylamide is one of water treatment chemicals which have been used widely. In laboratory, we prepared a novel cationic polyacrylamide (CPAM) with acrylamide (AM) and acryloyloxyethyltrimethyl ammonium chloride through dispersion polymerization in aqueous solution of ammonium sulfate. Cationic polyacrylamide (CPAM) made by ourselves is with high molecular weight and high charge density, and its stability and dissolvability are both excellent. In this paper, the CPAM made by ourselves is used as flocculant cooperating with polyaluminium chloride (PAC) to treat the papermaking wastewater, the results indicate that the CPAM is an excellent flocculant for papermaking wastewater.
新型阳离子聚丙烯酰胺絮凝剂在造纸废水处理中的应用
众所周知,现在造纸废水已成为中国水污染的主要来源。聚丙烯酰胺是目前应用最广泛的水处理剂之一。在实验室中,以丙烯酰胺(AM)和丙烯酰氧乙基三甲基氯化铵为原料,在硫酸铵水溶液中通过分散聚合法制备了一种新型阳离子聚丙烯酰胺(CPAM)。自行研制的阳离子聚丙烯酰胺(CPAM)具有高分子量和高电荷密度,稳定性和溶解性都很好。将自制的CPAM作为絮凝剂与聚合氯化铝(PAC)协同处理造纸废水,结果表明CPAM是一种优良的造纸废水絮凝剂。
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