制备出具有不同聚合氯化铁（PFC）碱化度（B）、不同聚环氧氯丙烷-二甲胺（EPI-DMA）质量分数（m（E））和粘度（η）的PFC-EPI-DMA复合混凝剂,对比研究了模拟染料废水絮凝脱色处理中m（E）、η和B对絮体特性的影响。结果表明,处理活性艳红时m（E）值越大,絮体增长速度越快,最终絮体粒度越大,同时絮体差异性增大;处理活性翠兰时,较低投加量下絮体生成速度降低,最终絮体粒度和絮体差异性减小,且较低投加量下,较小的m（E）值有利于絮体快速增长,较高投加量下,较大m（E）值下絮体具有更快的聚集速度、较大的粒径和较小的差异性;η值较高、B值较低时絮凝剂与染料反应时间较短,絮体能以较小的差异更快速地增长。
Polyferric chloride（PFC） and epichlorohydrin-dimethylamine（EPI-DMA） were applied as raw materials to prepare a novel composite inorganic-organic flocculant（PFC-EPI-DMA） with various intrinsic viscosities（η）,basicity（B,OH/Fe molar ratio）,and organic component fractions（m（E））.The floc characteristics of PFC-EPI-DMA were extensively examined regarding the decolorizing treatment of synthetic active dying wastewater.The effect of B,η and m（E） on the growth rate,size and time-weighted variance（TWV） of formed flocs were also evaluated through photometric dispersion analyzer.Experimental results indicate that higher m（E） was favorable to floc growth rate,floc size and TWV increase when treating active brilliant red.With respect to decolorizing of active blue,the m（E） influence on floc property was related to coagulant dosage.At lower dosage,the floc growth rate,floc size and TWV was reduced.Meanwhile,lower m（E） was beneficial to the more faster aggregation and growth of formed flocs.However,this trend becomes reversed under comparatively higher dosage conditions.In general,composite PFC-EPI-DMA with comparatively higher η and lower B value could obtain larger and more uniform flocs with faster growth rate.
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