【摘要】 该文介绍了EDI的工作原理,提出了水中杂质离子在EDI中的四个传质过程,即(1)杂质离子从水相到树脂相的传质;(2)杂质离子在树脂相中的传质;(3)杂质离子从水相到离子选择性交换膜的传质;(4)杂质离子在离子选择性交换膜内的电迁移传质。并推导出上述四个过程的传质速率方程,以利于进一步了解EDI的性能,便于EDI的推广应用。更多还原

【Abstract】 This article introduced the working principle of EDI,and four transferr processes of contaminant ions in EDI;(1)Contaminant ions transferred from liquid phase to IX(ion exchange) resins’phase ; (2) Contaminant ions transferred in the IX resins’ phase; (3) Contaminant ions transferred from liquid phase to ion -selective membranes’phase; (4)Contaminant ions transferred in ion - selective membranes’ phase.Equations of four processes were given and thus, we could understand further the performance of EDI,and make it used widely.更多还原