Abstract: The principle of the electrodeionization (EDI) technology was presented，the application of ion exchange medium and ion exchange membrane was reviewed，and the up-to-date research progress of resin bed，stack configuration and technical flow sheet were also summarized. Furthermore，several present models of mass transfer were analyzed，the existing problems at present and development of the EDI were also put forward for the dilute heavy metal wastewater treatment.

摘要： 阐述了电去离子(EDI)过程的去离子原理，综述了EDI技术处理低浓度重金属废水过程中，离子交换介质与离子交换膜的应用，以及床层结构、膜堆构造和工艺流程的最新进展，分析了现有几种传质模型的优缺点，提出了目前存在的问题和今后发展的方向。