阴离子交换膜渗析法回收含硫酸钠的高浓度硫酸废水  

The recovery of high concentration sulfuric acid wastewater containing sodium sulfate by the anion exchange membrane

作　　者：周国平[1] 杨建男[2] 罗士平[1] 

机构地区：[1]江苏石油化工学院化学工程系,常州213016 [2]湛江师范学院化学系,湛江524048

出　　处：《膜科学与技术》2002年第6期24-27,共4页Membrane Science and Technology

摘　　要：根据Fick扩散定律 ,提出了测定H2 SO4和Na2 SO4在阴离子交换膜中扩散速度的方法 .静态法测定结果显示 ,对含 2 5 0～ 3 5 0g/LH2 SO4、1 0 0～ 1 2 0g/LNa2 SO4的废水 ,常温下 ,A2 0 和 3 3 62BW膜中H+ 平均扩散速度分别为 8.0× 1 0 -4m/h和 7.8× 1 0 -4m/h,Na+ 平均扩散速度分别为 5 .9× 1 0 -5m/h和 6.6× 1 0 -5m/h,这预示两膜都能实现废酸中H2 SO4和Na2 SO4的有效分离 .动态法分离废酸结果表明 ,H2 SO4回收率达 83 .4% ,回收酸中Na2 SO4含量下降至 5 .2On the basis of Fick diffusion law,a method of determining diffusion velocity of H 2SO 4 and Na 2SO 4 in the anion exchange membrane was offered in this paper.In static method,two types of membranes(A 20 and 3362BW)were used,and the results show that the average diffusion velocity of H + was 8.0×10 -4 m/h and 7.8× 10 -4 m/h,and that of Na + was 5.9×10 -5 m/h and 6.6×10 -5 m/h respectively,at the room temperature,250～350 g/L H 2SO 4 and 100～120 g/L Na 2SO 4 solution.In dynamic method,the results show that H 2SO 4 recovery rate was 83.4%,and the leakage of Na 2SO 4 was 5.2 g/L.

关 键 词：阴离子交换膜 渗析 废水处理 

分 类 号：X781[环境科学与工程—环境工程]