乳化液膜体系去除电解锰废水中的Mn^(2+)  

Removal of Mn^(2+) from electrolytic manganese wastewater by liquid emulsion membrane system

作　　者：王强强[1,2,3] 成应向[2,3] 戴友芝[1] 向仁军[2] 李瑾[2,3] 

机构地区：[1]湘潭大学化工学院,湘潭411105 [2]湖南省环境保护科学研究院,长沙410004 [3]水污染控制技术湖南省重点实验室,长沙410004

出　　处：《环境工程学报》2012年第3期811-816,共6页Chinese Journal of Environmental Engineering

基　　金：国家"水污染控制与治理"科技重大专项(2009ZX07212-001);湖南省环保科技重点项目(2009sk4013)

摘　　要：采用乳化液膜法处理电解锰废水,考察制乳条件和提取条件对去除效果的影响。研究结果表明最佳制乳条件为:4%(V/V)span-80做表面活性剂,3%二(2-乙基己基)磷酸酯做载体,柴油做膜溶剂,用NaOH调节内水相pH为12,制乳时间为10 min,油内比2∶1;最佳提取条件:外水相pH为6～7、乳水比1∶10、提取时间10 min。制得的乳化液膜对电解锰废水中的Mn2+去除率可高达99.99%,出水Mn2+浓度低于2mg/L,实现水质达标排放。Liquid emulsion membrane system was used to treat manganese wastewater.The optimum membrane composition and the extraction condition which affected the effects were studied.The results showed that under the conditions of 4% span-80（V/V） as surfactant,3% of the carrier,diesel as membrane solvent,regulating water pH to 12 with sodium hydroxide,emulsification time of 10 min,ratio of emulsion oil phase to water of 2∶ 1,ratio of emulsion to wastewater of 1∶ 10,extraction time of 10 min,the removal rate of Mn was over 99.99%.The concentration of Mn2＋ in effluent was less than 2 mg/L,which met the environmental drainage standard.

关 键 词：乳化液膜 电解锰 废水 Mn2+ 

分 类 号：X703[环境科学与工程—环境工程]