铁盐共沉淀泡沫浮选法去除废水中Cr(VI)的应用研究  

Study of application on removal of Cr(VI) in wastewater by method of coprecipitation with molysite bubble flotation

作　　者：王九思[1] 吕江平[1] 刘剑[1] 孔爱平[1] 

机构地区：[1]兰州交通大学化学与生物工程学院,甘肃兰州730070

出　　处：《应用化工》2009年第5期695-697,共3页Applied Chemical Industry

摘　　要：采用铁盐共沉淀泡沫浮选法去除废水中Cr(VI),用FeSO4将六价铬还原成三价状态,考察了还原剂用量、捕捉剂品种及pH对总铬去除率的影响。结果表明,对浓度为10 mg/L的含Cr(VI)模拟废水,使用FeSO4作还原剂,LAS作捕捉剂,铁铬摩尔比为7∶1,pH=10,鼓泡10 min的条件下,Cr(VI)去除率可达99.1%。In this paper, removal of Cr （Ⅵ）in wastewater by coprecipitation with molysite bubble flotation,Cr（Ⅵ） is reduced Cr（ Ⅲ ）by FeSO4 ,investigating the dosage of reducer,capturing agent and pH on removal of Cr （Ⅵ）. The experimental results reveal that, in simulated wastewater containing Cr （Ⅵ） 10 mg/L,using FeSo4 as reducing agent,using LAS for capturing agent,with Fe-Cr mole ratio 7：1 ,pH is kept 10 and pumping air is stayed for 10 min in foam separation tower, removal rate Cr（Ⅵ） is up to 99.1%.

关 键 词：铬离子 铁盐共沉淀 泡沫浮选 去除率 

分 类 号：TQ028.8[化学工程]