胶体超滤法去除水中低含量重金属离子

REMOVAL OF HEAVY METAL IONS OF LOWER CONCENTRATION FROM WATER BY COLLOID UF MEMBRANE METHOD

本文研究了用超滤膜去除水中胶态重金属离子氢氧化物的可能性。实验表明,选用一定孔径的CN—CA膜和G—CS膜可以有效地去除水中Cu^(2+)、Ni^(2+)、Cd^(2+)、Pb^(2+)、Zn^(2+)等金属离子的氢氧化物。实验所采用的方法还可用来研究氢氧化物的两性及金属离子随溶液pH值的变化而引起的化学形态的变化。

The possibilities of removing colloidal hydroxides containing heavy metal ions removal from water with ultrafiltration membranes are studied in this paper.The experimental results indicated that selecting CN-CA membrane and chitosan membrane of difinite aperture may be able to remove colloidal heavy metal ions offectively such as Cu^(2+)、Pb^(2+)、Zn^(2+)、Ni^(2+)、Cd^(2+) hydroxides from water.The method used in the experiment may be adopted to study amphiprotic of metals as well as forms of metal ions changing with pH values.