以亚铁盐和铝盐为原料,采用分步滴定法制备凹凸棒土/聚合铝铁复合絮凝剂(APAFC),考察了原料配比、反应温度、pH值对复合絮凝剂性能的影响.结果表明:在pH值为3、m(凹凸棒土):m(FeSO4):m(AICl3)为1:0.05:0.1、反应温度为60℃条件下,复合絮凝剂絮凝性能最佳.COD去除率为80%以上,浊度去除率为90%以上.%Attapulgite - existed aluminium and iron compound flocculating agent (APAFC) was prepared from ferrite salt and aluminium salt by the method of step-by-step dripping reaction. The effect of the quality ratio of raw materials, reaction temperature and pH value were observed. The experimental results showed that the best conditions of preparing attapulgite - existed iron and aluminium compound flocculating agent were that the mass ratio of attapulgite and FeSO4 and AlCl3 was 1: 0.05: 0.1, the reaction temperature was 60℃ and pH value was 3, the removal rate of COD and turbidity were more than 80％ and 90％ ,respectively.
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