离子交换膜的应用技术

Application Technology of Ion Exchange Membrane

离子交换膜具有分离效果好、能耗少和环保等特点,已经逐渐被应用于化工、海水脱盐、废水治理等领域。根据离子交换膜的分离机理不同,可将其在水处理中的应用分为电渗析、扩散渗析和Donnan渗析等三种,对三种分离方法的机理作了详细介绍,并举例说明了离子交换膜在水处理中的巨大潜力。

Ion exchange membrane has gradually been used in chemical engineering related field, especially in waste water treatment due to its unique merits, such as good separation effect, less energy consumption and so on. According to various separation mechanisms of ion exchange membrane, the membrane separation technology can be divided into electrodialysis, diffusion dialysis and Donnan dialysis. In this paper, the principles of these three separation methods were introduced, some examples were also given to illustrate that ion exchange membrane possesses have great potential in the process of water treatment.