近些年来，工业废酸的处理和回收逐渐成为困扰研究者的难题，膜分离技术以诸多优势成为研究重点。扩散渗析作为一种低能环保的膜分离技术，在废酸回收领域运用广泛，酸回收率一直是扩散渗析过程的重要指标。本工作以0.55 mol/L盐酸为原料进行动态扩散渗析实验，考察进料酸浓度、进料流量(620 mL/min)、水酸流量比(0.61.4)等操作参数对酸回收率的影响。通过无因次方法，针对特定的DF-120膜建立盐酸浓度和膜内渗透系数的经验公式，简化传质模拟，最终得到可以预测扩散渗析过程盐酸回收率的参数模型。对实验数据点进行分析，验证了数学模型的准确性。该模型也被用于更详细的实验操作条件下的预测，为实际工业生产提供了参考方法和理论依据。

In recent years, membrane separation technology has become the focus of industrial waste acid treatment and recovery with many advantages. As a kind of environmentally friendly membrane separation technology, diffusion dialysis is widely used in the field of waste acid. The experiment was carried out with 0.55 mol/L hydrochloric acid as raw material. Besides, the effects of operating parameters such as the flow rate of feed acid (620 mL/min) and flow ratio of water and acid (0.61.4) were examined. The transport of hydrochloric acids through anion-exchange membrane DF-120 in a counter-current continuous dialyzer was investigated in detail. The important parameter, permeability coefficient of the membrane, was optimized by polynomial fitting. A simpler mathematical model of lumped parameters established, which could predict the hydrochloric acid recovery rate during the diffusion dialysis process. These obtained points were investigated to verify the mathematical model and it was proved excellent. The model was used for predictions under more detailed experimental operating conditions. It also provided reference methods and arguments for actual industrial production.