阳离子聚电解质强化絮凝去除活性染料的研究

STUDY ON ENHANCED FLOCCULATION REMOVAL OF REACTIVE DYES BY CATIONIC POLYELECTROLYTE

选用三种活性染料分别配成模拟染料废水,用阳离子聚电解质(PDADMAC)强化絮凝去除活性染料.结果表明,PDADMAC去除活性染料的机理为聚电解质络合絮凝.PDADMAC的阳离子度高,分子量低,疏水性大,脱色去除效果较好.而且,活性染料的脱色去除率随活性染料色度的深浅而不同,表现为活性黑K-BG>活性艳红K-2BP>活性嫩黄K-6G.

Flocculation removal of reactive dyes by cationic polyelectrolyte （PDADMAC）was studied. The results show： suggested removal mechanism of reactive dyes with cationic polyelectrolyte was ＂ polyelectrolyte complexation flocculation＂. The removal efficiency was increased under the condition of high cationic density, high hydrophobicity or low molecular weight. Removal of reactive dyes having different color is different. The order of removal is Reactive Black K-BG 〉 Reactive Red K-2BP 〉 Reactive Yellow K-6G.