摘要：

研究了复合使用羟乙基田菁胶（HETQ）和聚合硫酸铁处理造纸废水的最佳投药量和使用条件及搅拌对絮凝效果的影响。实验结果表明，当羟乙基田菁胶的浓度约为5mg/L,聚合硫酸铁用量约为200mg/L,pH值为6～8时，混凝效果最好，COD_Cr去除率达90%以上。

关键词: 羟乙基田菁胶, 聚合硫酸铁, 混凝剂, 造纸废水

Abstract:

In this paper, the treatment of paper-making waste water was studied with the composite coagulants of ethoxyl-sesbania gum and polyferria sulphate(PFS).The addi-tions of ethoxyl-sesbania gum and PFS, pH, and the stir methods were investigated, respectively.The experiment results indicate that, when the concentration of ethoxyl-sesbania gum is 5mg/L and PFS 200 mg/L, and pH 6～8, the effect of water treatment is the best.At this moment, the removal rate of COD Cris above 90%.

Key words: ethoxyl-sesbania gum, polyferria sul-phate, coagulant, paper-making wastewater