膜分离在镀镍废水处理中的应用

An Application of Ni^(2+) Wastewater Treatment by Using Membrane Separation Technology

采用膜分离技术中的纳滤,反渗透以及络合-超滤耦合过程处理电镀废水中常见的含镍废水。以回收重金属镍和回用废水为目的,讨论了操作压强对膜通量、截留率的影响。实验结果表明,三种膜分离方法处理含镍废水均远低于国家排放标准,镍的截留率均大于99%,实现了分离的目的,且透过的水可以回用。

For the purpose of recycling heavy metal Ni and wastewater, the treatments of wastewater containing Ni^2＋ were studied in this paper by using membrane separation technique including Nanofiltration, Reverse Osmosis and Complexation - Ultrafiltration process. As to wastewater containing Ni^2＋ , the results of the three methods are below the national standard, the rejections of them are more than 99%, the purpose of separation has been reached and the permeation can be recycled.