PDADMAC强化絮凝去除腐殖质类天然有机污染物的研究

以不同来源的腐殖质为典型有机污染物，进行了聚二甲基二烯丙基氯化铵（PDADMAC）强化絮凝去除溶解性腐殖质的研究和机理讨论.结果表明，复合PDADMAC使絮凝剂投量减少了60%以上，出水DOC和色度的去除率分别增加了60%和90%左右.不同来源腐殖质的负电性对PDADMAC强化絮凝去除腐殖质的影响强于其疏水性的影响.有机阳离子絮凝剂PDADMAC 强化絮凝去除溶解性腐殖质的絮凝机理主要表现为专属吸附作用，即在无机高分子絮凝剂PAC水解絮凝的过程中，高正电性的PDADMAC吸附于PAC水解产物的表面上，增强了其吸附电中和与专属吸附作用，从而提高了其对溶解性腐殖质的去除率.

Flocculation of the Natural Humus by Polydiallyldimethylammonium Chloride

Enhanced flocculation of natural dissolve humus by polydiallyldimethylammonium chloride(PDADMAC) was studied and removal mechanism was discussed.The results show that using PDADMAC as the aid flocculants,the optimal flocculants dosage only was 40% of the tradition method.Removal of DOC and colour were increased to 60% and 90%.The results still show that anionic density of the humus has the more effect than its hydrophobic property on removal of humus by PDADMAC.Removal mechanism is "special adsorption action" in enhanced flocculation of humus by PDADMAC,namely,in the process of the hydrolysis flocculation of Poly(aluminium chloride)(PAC),cationic flocculants PDADMAC is adsorbed on the surface of the hydrolysate and increase the "adsorption electrostatic neutralization action" and "special adsorption action" of the hydrolysate,so that that removal of dissolve humus was obviously improved.