聚硅酸氯化铝铁处理含砷废水的实验研究.pdfVIP

第 20 卷第 4 期 化工时刊 Vol. 20 ,No . 4 　　　　　　　　　　　　 　　　　　　　　　　　　 2006 年 4 月 Chemical Industry Time s Apr. 4 . 2006 聚硅酸氯化铝铁处理含砷废水 的实验研究 王淑勤 　李蔷薇 (华北电力大学环境科学与工程学院 ,河北 保定 071003) 摘要 　对聚硅酸氯化铝铁混凝处理含砷废水进行了研究 。考察了混凝剂用量 , ( Fe + Al) / SiO2 物质的量比 ,碱化度对 ( ) 除砷率的影响 。实验结果表明 Fe + Al / SiO2 = 5 ∶1 ,B = 01 时 ,在 pH 值 70 ,投加量为 120 mg/ L 的条件下 ,聚硅酸氯 化铝铁除砷率达 905 % 。实际水样处理后的水质能够达到废水中砷的排放标准 。并且通过红外光谱分析讨论了混 凝除砷机理 。 关键词 　聚硅酸氯化铝铁 　含砷废水 　混凝处理 　 Study on the Arsenic Removal from Wastewater by Polysilicate Aluminum Ferric Chioride Wang Shuqin 　Li Qiangwei ( ) School of Environmental Science Engineering ,North China Electric Power University ,Hebei Baoding ,071003 Abstract 　The arsenic wastewater treated by polysilicate ferric aluminum chloride (PSFAC) was studied. The effect of ( ) ( ) ( ) ( ) dosage ,Fe A1 / SiO2 and OH / Fe Al B molar ratio on PSFAC for disposal of arsenic wastewater was investigated as well. It was shown that the arsenic removal efficiency of PSFAC was 905 %while pH is of 70 ,and the dosag of 120 mg/ L , and molar ratio (Fe3 + + Al2 + ) / SiO2 of 5 ∶1 ,and B of 01. The effluent of actual sample can meet the Chinese effluent dis charge standard. The PSFAC was characterized by the infrared spectrometer( IR) . The arsenic removal mechanisms of PSFAC were also discussed. Keywords 　polysilicate