期刊论文

中文

南华大学学报(自然科学版)

1673-0062

2014

3

99-102

10.19431/j.cnki.1673-0062.2014.03.023

湖南省科技厅基金资助项目（2012FJ3102）；

本校为第一机构

混凝沉淀工艺处理含镉废水,使处理后水体的镉浓度达到《污水综合排放标准》GB 8978—1996的0.1 mg/L排放.实验研究不同絮凝剂、絮凝剂投加量和初始pH对去除镉的影响,另对混凝沉淀后的絮体进行X射线衍射分析.结果表明无机高聚物的絮凝剂和初始pH为9的溶液对镉的去除效果较好.随着聚合氯化铝（PACI）投加量增加,当PACI盐基度为67%时,镉的去除效果明显增加.X射线衍射分析絮体中镉的结合形式主要为氢氧化镉和碳酸镉.

The wastewater containing cadmium was treated by coagulation method. As the recovery of cadmium metal, the concentrations of cadmium in treated water reached 0.1 mg/L of the prescribed discharge standards in “Integrated Wastewater Discharge Standard (GB8978-1996) ”. In the process of coagulation,we studied the effect of floc-culant,dosing and different pH value on cadmium removal. The experimental results show that polyaluminium chloride ( PAC I ) and the initial pH value of 9 on cadmium removal effect are better. With PACI dosing quantity in...