基于Donnan dialysis原理,在无外加电压作用下采用阳离子交换膜分离去除原水中的Cu2+,研究pH对阳离子交换膜分离去除Cu2+效果的影响.研究结果表明:原水及补偿离子溶液pH≥4时,H+浓度较低,其对阳离子交换膜分离去除Cu2+无明显影响,去除率均在85%左右;原水pH=3时,阳离子交换膜分离去除Cu2+的能力降低,去除率为60%~62%左右;原水pH=6,补偿离子溶液pH=3时,H+与补偿离子K+具有累加作用,但累加作用不明显,Cu2+去除率只有少量增加.
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