采用淡水室填充阳离子交换树脂的电去离子（EDI）膜堆来处理低浓度含镍废水，考察了该EDI 膜堆用于低浓度重金属废水处理的可行性，并探讨了膜堆电压和料液流量对EDI 分离重金属离子性能的影响。结果表明，对于Ni²⁺浓度为50 mg/L，pH为4.5 的料液工况，操作电压为25 V，料液处理量为20 L/h 时，可保证淡水产水Ni²⁺浓度在2 mg/L以下，且浓缩水Ni²⁺浓度大于900 mg/L，电流效率达到24.2 %。

Study on the feasibility of EDI device, whose dilute departments were filled with cation exchange resins and feed water was low concentration Ni₂ solution, for the treatment of low-concentration heavy-metal wastewater. The effects of operating voltage and dilute flow flux on the separation performances EDI processes were investigated. With the feed solution whose Ni²⁺ concentration was 50 mg·L^-1 and pH was 4.5, the results show that the out dilute Ni²⁺concentration was lower than 2 mg·L^_-1 and the Ni²⁺ concentration of out concentrate could higher than 900 mg·L^-1 when operating voltage was 25 v and dilute flow flux was 20 L·h^_-1.