聚丙烯酰胺-聚硅酸锌复合絮凝剂的制备和絮凝性能

利用物理复合的方法制备聚丙烯酰胺（PAM）-聚硅酸锌（PSZ）复合絮凝剂。结果表明，聚丙烯酰胺-聚硅酸锌絮凝剂在复配比例为V （PAM）： V （PSZ）=1.0、投加量为0.10 mL、模拟水样pH为8左右时，对高岭土模拟废水絮凝效果最好，脱色率达91.2%，均高于聚丙烯酰胺和聚硅酸锌单独使用的效果（最高脱色率分别达87.66%和89.78%）；而且，在中性和碱性范围内，这种复合絮凝剂受pH影响较小。三种絮凝剂应用于四种工业废水的脱色处理结果表明，聚丙烯酰胺-聚硅酸锌复合絮凝剂的脱色率也均比单一絮凝剂要高。

Preparation and Flocculating Performance of a Polyacrylamide-Polysilicate Zinc Composite Flocculant

Polyacrylamide （PAM）-polysilicate zinc （PSZ） composite flocculant has been prepared via a physical composition method. The results show that the optimum decoloring ratio for kaolin simulated water sample reaches 91.2% under a condition including of 0.10 mL of PAM-PSZ flocculant dosage, 1.0 of V （PAM） ： V （PSZ） （volume ratio）, and 8 of pH. The decoloring ratio of PAM-PSZ is higher than that of PAM （87.66%） and PSZ （89.78%）. Moreover, in neutral and alkaline condition the decoloring performance of PAM-PSZ is less affected by pH than that of PAM and PSZ. The results of application for waste water show that the decoloring performance of PAM-PSZ is also better than that of PAM and PSZ.