非牛顿液体的膜过滤机理的研究是目前膜过滤工艺需要研究解决的关键问题之一.为描述非牛顿液体的恒速部分堵塞微滤膜过程的压强变化数学模型,利用拓展至非牛顿流体的Daroy方程,建立了非牛顿流体膜过滤基础方程,并通过引入微滤膜部分堵塞微滤机理模型,推导了基于Darcy方程的非牛顿液体的恒速微滤总压强变化规律.在恒速条件下,分别利用聚酰胺(PA,0.22 μm,0.45 μm)平板膜对质量浓度为0.5%的CMC溶液进行微滤实验对上述模型进行了验证.结果表明:实验测得的数据和推导的模型基本吻合.
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