电渗析是一项化工单元操作技术,它利用离子交换膜和直流电场,使溶液中电解质的离子产生选择性迁移,从而达到使溶液淡化、浓缩、纯化或精制的目的。在给水处理方面,这项技术首先用于苦咸水的淡化,尔后逐步扩大到海水淡化和制取工业纯水。目前,它在水的淡化除盐,海水浓缩制盐,精制、提纯或制取化工产品等各方面都广泛地应用起来,污水的回用和放射性废水的处理等方 Electrodialysis is a chemical cell operating technology that uses ion exchange membranes and a DC electric field to selectively ionize the electrolyte ions in the solution to achieve desalination, concentration, purification, or purification. In terms of water treatment, this technology was first used for the desalination of brackish water and gradually expanded to seawater desalination and industrial pure water production. At present, it is widely used in various aspects such as water desalination and desalination, sea salt concentration, salt refining, purification or preparation of chemical products, such as the reuse of sewage and the treatment of radioactive waste water.