Al_b形态处理模拟染料废水的效果及机制研究  

Coagulation Performance and Mechanism of Al_b Species in Treating Simulative Dye Wastewater

作　　者：许伟颖[1] 高宝玉[1] 王燕[1,2] 徐秀明[1] 岳钦艳[1] 

机构地区：[1]山东大学环境科学与工程学院,济南250100 [2]山东大学化学与化工学院,济南250100

出　　处：《环境科学》2010年第1期117-123,共7页Environmental Science

基　　金：国家自然科学基金项目(50678095);"十一五"国家科技支撑计划重点项目(2006BAJ06B05)

摘　　要：采用乙醇-丙酮混合沉淀法分离聚合氯化铝(PAC)溶液中的Alb形态.通过对吸光度和Zeta电位的测定,研究了Alb形态的投加量和溶液pH对分散黄棕和直接紫2种模拟染料废水脱色效果的影响,并将其与PAC进行比较.利用光散射颗粒分析仪(PDA2000)和Mastersizer2000型激光粒度仪在线测定絮体粒径的变化情况,结合絮体的Zeta电位,对Alb形态的絮凝机制进行探讨.结果表明,与PAC比较,Alb形态处理模拟染料废水的最佳pH值范围较宽,在实验条件下,Alb形态形成的絮体的密实性较高,沉降性能较好,恢复能力较强.Alb species was obtained from polyaluminum chloride（PAC） using ethanol-acetone mixed precipitation method.Alb and PAC were comparatively investigated in terms of color removal and zeta potential under different coagulant dosage and solution pH in the treatment of dispersive yellow and direct purple simulative dyeing wastewater.The changes of floc size of Alb and PAC were analyzed with PDA2000 and Mastersizer2000,and the coagulation mechanisms were also investigated.Compared with PAC,Alb species can work within a wider pH range and the flocs formed by Alb showed a more compact structure,a better settle ability and regrowth ability.

关 键 词：聚合氯化铝 Alb形态 染料废水 絮凝机制 絮凝动力学 

分 类 号：X788[环境科学与工程—环境工程]