聚硅酸铝铁处理含铬废水的研究  

A Research on Treatment of Wastewater Containing Chromium with Polysilicate Aluminum and Ferric

作　　者：李琛[1] 

机构地区：[1]陕西理工学院化学与环境科学学院,陕西汉中723001

出　　处：《电镀与环保》2014年第5期46-48,共3页Electroplating & Pollution Control

基　　金：陕西省科技厅社发攻关基金(No.2011K17-03-10);陕西省"13115"科技创新工程项目(No.2010ZDGC-23);陕西省教育厅项目(No.11JK0754)

摘　　要：用三氯化铁、三氯化铝及硅酸钠制备了聚硅酸铝铁,并研究了其作为絮凝剂对Cr(VI)的处理效果。结果表明:聚硅酸铝铁对Cr(VI)有很好的去除效果。聚硅酸铝铁的投加量、pH值及搅拌时间对Cr(VI)的吸附有较明显的影响,其中pH值的影响最为显著。由正交试验分析得出的最佳条件为:絮凝剂6g/L,pH值6,搅拌时间40min。此时,Cr(VI)的去除率为99.77%。The polysilicate aluminum and ferric was prepared with FeCl3,A1Cl3 and Na2SiO3.As a flocculant,its efficiency in treating wastewater containing Cr（Ⅵ） was studied.The results show that polysilicate aluminum and ferric has a very good removal efficiency on Cr（Ⅵ） in treatment of wastewater containing Cr（Ⅵ）.The dosage of polysilicate aluminum and ferric,pH value and mixing time have an obvious effect on the removal rate of Cr（Ⅵ）,among them,pH value has the most remarkable influence.The best conditions obtained from orthogonal test are：flocculant 6 g/L,pH value 6,mixing time 40 min.Under these conditions,the removal rate of Cr（Ⅵ） is 99.77 ％.

关 键 词：Cr(Ⅵ) 聚硅酸铝铁 吸附 废水处理 

分 类 号：X781.1[环境科学与工程—环境工程]