连续电再生离子交换原理探讨

Study on the Mechanism of Electrodeionization in Demineralization

连续电再生离子交换系统(EDI)将电渗析技术和离子交换技术结合起来,无需酸、碱再生。其工作原理是系统中阴、阳离子交换树脂对水中离子的吸附交换、在电场作用下离子的定向迁移以及离子交换树脂的平衡再生。

EDI(Electrodeionization)system combines electrodialysis with ion exchange technology.The system adsorbs and exchanges ions in water with anion and cation ion exchange resin.Under the electric field force oriented migration of ions and balanced regeneration of ion exchange resin do without the regeneration with acid and base.