聚合氯化铝铁与磷酸氢二钠复合絮凝剂的制备及其对印染废水的处理

Preparation of Composite Flocculant of FAFC and Disodium Hydrogen Phosphate and Its Simulated Treatment for Dyeing Wastewater

利用正交试验方法对印染废水的混凝处理最佳试验条件进行了研究。通过聚合氯化铝铁(PAFC)和磷酸氢二钠(NaH2PO4·2H2O)对模拟印染废水处理效果的研究表明,在溶液pH为7、PAFC与NaH2PO4·2H2O投加量比为3∶2、温度为55℃、搅拌时间为15min时,对模拟印染废水处理得到较为满意的效果,COD的去除率为80.45%,经处理后水的吸光度为0.4269。

The conditions of dyeing wastewater coagulation were optimized by orthogonal test method. The study of simulated dyeing wastewater treatment by polymeric aluminum ferric chloride （PAFC） and disodium hydrogen phosphate （ NaH2PO4 -2H2O） showed that under the conditions of pH 7, dosing ratio of PAFC and NaH2PO4·2H2O 3 ： 2, 55℃ and stirring 15rain, COD removal rate of 80.45% and treated water absorbance of 0. 4269 were achieved.