利用电渗析技术脱除头孢氨苄酶法母液废水中的盐分，研究了操作电压、浓缩室与淡化室流速比、温度等因素对电渗析脱盐过程的影响，并研究了反渗透膜法处理脱盐母液废水的膜通量变化趋势。实验结果表明，当淡化室、浓缩室流量均为500 L/h（流速比1∶1），操作电压为25 V，温度＜30 ℃时，电渗析在高效脱盐的同时具有理想的有机物截留率达99.50 %以上，能耗3.65 kW · h/kg；反渗透膜法在处理脱盐母液废水时，膜通量衰减较慢，水回收率达到75.67 %。实验结果表明，利用电渗析、反渗透组合工艺处理头孢氨苄酶法母液废水具有良好的可行性。

The salt in the wastewater of the cephalexin enzymatic process was removed by electrodialysis. The influence of operating voltage, velocity ratio and temperature on the desalination process were investigated. The change of the permeate flux in the reverse osmosis separation process was also studied. The results showed that the electrodialysis process performed better in desalination with the organic matter retention rate reaching 99.50%, the energy consumption of 3.65KWh/kg at the conditions of the velocity ratio of 1:1, the operating voltage of 25V and temperature <30℃. During the reverse osmosis separation process, the decay of permeate flux was slow and acceptable, and the the water recovery rate was 75.67%. All results showed that it was feasible to treatment the waste water of the cephalexin enzymatic process by a combined process of electrodialysis and reverse osmosis.