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首页> 外文期刊>Journal of Environmental Engineering >Pressure-dependent permeate flux in ultra- and microfiltration
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Pressure-dependent permeate flux in ultra- and microfiltration

机译：超滤和微滤中与压力有关的渗透通量

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The effect of applied pressure on the permeate flux in cross-flow ultrafiltration (UF) and microfiltration (MF) was investigated both theoretically and experimentally In UF and MF processes, the permeate fluxes are controlled by concentration polarization and cake formation over the membrane surface. As a better understanding of concentration polarization and cake formation becomes available, the permeate flux under any pressure can be theoretically predicted. Experiments were conducted in a ceramic tubular cross-flow filter with silica colloids of a narrow size distribution (model colloids). The pressure-dependent flux of the model colloidal suspension in cross-flow filtration was investigated under various experimental conditions. The experimental measurements were compared with the theoretical predictions, and the results showed that the pressure-dependent permeate flux in cross-flow filtration can be adequately predicted. Furthermore, theory and experiments demonstrated that the performance and operating state of UF and MF could be well characterized by the so-called "characteristic pressure" of the process. [References: 18]
机译：从理论和实验上研究了横流超滤（UF）和微滤（MF）中施加压力对渗透通量的影响。在UF和MF工艺中，渗透通量受浓度极化和膜表面滤饼形成的控制。随着对浓度极化和滤饼形成的更好理解，可以在任何压力下从理论上预测渗透通量。在具有狭窄尺寸分布的二氧化硅胶体（模型胶体）的陶瓷管状错流过滤器中进行实验。在各种实验条件下，研究了错流过滤中模型胶体悬浮液的压力依赖性通量。将实验测量值与理论预测值进行了比较，结果表明可以充分预测横流过滤中压力相关的渗透通量。此外，理论和实验表明，UF和MF的性能和运行状态可以通过该过程的所谓“特征压力”很好地表征。 [参考：18]

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