合成复合型絮凝剂聚合氯化铝铁性能影响因素

Study on Factors Influencing the Properties of Synthetic Polyaluminum Ferric Chloride

以铝箔酸、铝盐水和铝酸钙粉为主剂,亚铁酸为助剂,酸溶一步法合成聚合氯化铝铁.采用多因素正交试验研究了投料温度、加铁时间和保温时间对产品中铝含量、盐基度及其在处理污水过程中对污水中COD、TP和浊度的去除效果影响.结果表明,保温时间对产品中铝含量和盐基度及COD去除率影响最大,投料温度对浊度的去除效果最为明显,加铁时间对产品中铝含量、COD及浊度的去除率影响不大.

With aluminum foil acid, aluminum salt and calcium alumlnate powder as main ingredient, and ferrous acid as additives, the polyaluminum ferric chloride （PAFC） was synthesized via one-step acid-soluble method. Multi-factor orthogonal experiment was applied to study the influence of feed temperature, iron dropping time and holding time upon the products~ alu- minum content, basicity and COD,the remova） of wastewater COD, TP and turbidity. The results show that the holding time most drastically affects the product＇s aluminum content, basicity and COD, effect of feed temperature on removal efficiency of the turbidity is most obvious. The iron dropping time has little effect on the product＇s aluminum content, C（）D and turbidity removal.