纳滤膜处理含金属离子酸性废液  

Treatment of acidic waste liquid containing metallic ions with membrane separation technology

作　　者：王洁[1] 孙癿石 方富林 毕晓伊[1] 杨常亮[1] 邓辅唐[1] 乔莉[1,3] 

机构地区：[1]云南大学环境与湖泊研究院,昆明650091 [2]新加坡三达集团三达膜科技有限公司,厦门361022 [3]云南大学生命科学学院,昆明650091

出　　处：《膜科学与技术》2010年第3期35-38,共4页Membrane Science and Technology

基　　金：国家863计划资助项目(2007AA06Z312);云南省自然科学基金项目(2006E0014M)

摘　　要：采用2540膜中试设备对含Fe2+、Mn2+、Zn2+、Al3+四种金属离子的硫酸废液进行分离实验研究,考察硫酸浓度、金属离子浓度、操作压力等操作条件对金属离子截留率的影响.中试实验结果表明:当Fe2+、Mn2+、Zn2+、Al3+四种金属离子硫酸盐的质量分数分别为0.5%、0.2%、0.5%、1.0%,操作压力为2 MPa,稀液与浓液比为2,硫酸的质量分数为10%时,Fe2+、Mn2+、Zn2+、Al3+四种金属离子的截留率均可达到96%以上,硫酸在稀液中有一定程度富集,硫酸的质量分数可达到12.5%,且四种金属离子在稀液中浓度为10～100 mg/L,硫酸可回收利用.Four metallic ions （Fe^2＋ ,Mn^2＋, Zn^2＋, Al^3＋） , which contained in sulfuric acid waste liquid, were separated by 2540 membrane experimental equipment. The effects： of operating parameters such as concentration of sulfuric acid and metallic ions, and operation pressure on metallic ion retention rates were investigated, respectively. The results show that the optimum conditions for recovery rate of sulfuric acid approaching 12. 5% are as follows： the mass fractions of ferric sulfate, manganese sulfate, zinc sulfate and aluminum sulfate were 0. 5%, 0. 2%, 0. 5% and 1.0%, the operation pressure is 2 MPa, the ratio of thin liquid to dope is 2, the mass fractions of sulfuric acid is 10%. Under the same experimental conditions, the retention rates of four metallic ions can all achieve above 96% and concentrations of these ions in the thin liquid are from 10 to 100 mg/L. The sulfuric acid recovered by this membrane treatment process can be reused.

关 键 词：金属离子 硫酸废液 膜分离技术 

分 类 号：X703.1[环境科学与工程—环境工程]