纳滤膜处理含锰废水  

Treatment of Manganese-containing Wastewater Using Nanofiltration Membrane

作　　者：李萌[1] 朱彤[1] 张翔宇[1] 宋宝华[1] 王中原[1] 刘波 

机构地区：[1]中节能六合天融环保科技有限公司,北京100085 [2]重庆武陵锰业有限公司,重庆409912

出　　处：《化工环保》2012年第3期260-263,共4页Environmental Protection of Chemical Industry

摘　　要：采用纳滤膜处理电解锰生产过程中产生的含锰废水,考察了操作压力、阻垢剂和反冲洗等因素对膜通量和各金属离子截留率的影响。实验结果表明:操作压力越大,膜通量越大,且膜通量随运行时间延长下降得越快;在操作压力为2.0 MPa的条件下,纳滤膜对Mg2+的截留率为90.69%,对Mn2+的截留率为89.72%,对Ca2+的截留率最高,达100%;加入阻垢剂后,纳滤膜的膜通量比未加入阻垢剂时的膜通量略大;反冲洗4次后,膜通量均可完全恢复。The Mn2＋-containing wastewater in electrolytic manganese production was treated using nanofiltration membrane. The factors affecting membrane flux and metal ion retention rates were studied. The experimental results show that： The greater the operating pressure is, the greater the membrane flux is, and the faster the membrane flux decreases with the extending of running time; When the operating pressure is 2.0 MPa, the retention rates of Mg2＋, Mn2＋ and Ca2＋ can reach 90.69%, 89.72% and 100% respectively; With the addition of scale inhibitor, the membrane flux is slightly larger; After 4 times of backwashing, the membrane flux can be renewed completely.

关 键 词：纳滤膜 锰 膜通量 截留率 阻垢剂 反冲洗 废水处理 

分 类 号：X703[环境科学与工程—环境工程]