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将聚二甲基二烯丙基氯化铵(PDMDAAC)与聚合硫酸铁(PFS)复合制备了新型复合混凝剂PFS-PDMDAAC(PFS-PDM),对秋冬季东江微污染水源水强化混凝净化处理,并采用红外光谱、扫描电镜、Zeta电位对复合混凝剂的形态和性能进行初步表征。结果表明,复合混凝剂PFS-PDM在浊度、UV_(254)及CODMn去除效果都优于单独使用PFS或PDM,PFS-PDM并不是PFS和PDM简单机械混合,而是形成新的结构,复合混凝剂PDM含量及盐基度对混凝性能影响与Zeta电位相关。
A novel composite coagulant PFS-PDMDAAC (PFS-PDM) was prepared by compounding polydimethyldiallylammonium chloride (PDMDAAC) with polyferric sulfate (PFS) Purification treatment, and the use of infrared spectroscopy, scanning electron microscopy, Zeta potential composite coagulant morphology and performance of the preliminary characterization. The results show that PFS-PDM is better than PFS or PDM in turbidity, UV 254 and CODMn removal. PFS-PDM is not a simple mechanical mixing of PFS and PDM, but a new structure is formed. The influence of composite coagulant PDM content and basicity on coagulation performance was related to Zeta potential.