自制的卷式扩散渗析膜组件用于模拟钛白废酸液（H2SO4/FeSO4体系）的回收处理,考察了废液中酸和盐的浓度、流速、流速比、时间等因素对酸回收率和铁离子截留率的影响。结果表明,卷式扩散渗析膜组件是回收钛白废酸液的有效设备,处理能力为4.84 mL/（min.m2）、流速比为1时,酸的回收率可以达到80%,Fe的截留率控制在90%以上,回收酸浓度可达原酸浓度的70%,相同处理效果下,其处理量大于小型板框式扩散渗析器。%Separation of synthetic titanium white waste liquor（H2SO4/FeSO4 system）by a self-made spiral wound diffusion dialysis module has been studied.Effects of H2SO4 and FeSO4 concentration,diffusion dialysis time,flow rate and flow rate ratio on the recovery of H2SO4 were investigated.The results showed that the spiral wound diffusion dialysis membrane module was an effective diffusion dialyzator.The acid recovery rate was more than 80% and the salt rejection rate was more than 90% when feed and water flow rate is 4.84 mL/（min？m2） and flow ratio of water to feed is 1.The recovered acid concentration was up to 70% of the acid concentration of titanium white waste liquor.Under the same operation condition,the spiral wound diffusion dialysis membrane module was more effective than the conventional plate-and-frame diffusion dialyzator.
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