Toward Incorporation of Membrane Properties Non-Uniformity in Spiral Wound Module Performance Simulators—Effect of Non-Uniform Permeability on Fouling Layer Evolution
Toward Incorporation of Membrane Properties Non-Uniformity in Spiral Wound Module Performance Simulators—Effect of Non-Uniform Permeability on Fouling Layer Evolution
复制标题
将膜特性不均匀性纳入螺旋缠绕模块性能模拟器中——不均匀渗透性对污垢层演变的影响
作者：
M. Kostoglou;A. Karabelas
用于海水淡化的螺旋缠绕膜(SWM)组件性能模拟器是进行工艺设计和优化的重要工具。现有的最先进的中尺度模拟工具考虑了操作本身造成的空间不均匀(流动、压力和浓度分布)，但它们假设均匀的膜特性。然而，实验研究表明，膜的性能并不是统一的。因此，需要考虑到模拟工具中的这种不一致性，从而能够系统地评估其影响，以及其他好处；这里提出了迈向这一目标的第一步。特别分析了非均匀渗透膜上有机污染层的生长问题。讨论了该问题的几种数学处理方法，并给出了指示性结果。提出了污垢层厚度概率密度函数的概念，作为在现有模拟工具中引入亚网格水平计算的一种手段。通过分析，选择了一种合适的方法来将这种影响纳入膜片尺度上的污层演化的动态模拟中。
A performance simulator of spiral wound membrane (SWM) modules used for desalination is a valuable tool for process design and optimization. The existing state-of-the-art mesoscale simulation tools account for the spatial non-uniformities created by the operation itself (flow, pressure, and concentration distributions) but they assume uniform membrane properties. However, experimental studies reveal that membrane properties are by no means uniform. Therefore, the need arises to account for this non-uniformity in simulation tools thus enabling a systematic assessment of its impact, among other benefits; a first step toward this goal is presented herein. In particular, the issue of an organic fouling layer growing on a membrane with non-uniform permeability is analyzed. Several mathematical treatments of the problem are discussed and indicative results are presented. The concept of fouling layer thickness probability density function is suggested as a means to introduce sub-grid level calculations in existing simulation tools. The analysis leads to the selection of an appropriate methodology to incorporate this effect in the dynamic simulation of fouling layer evolution at the membrane-sheet scale.
影响因子：
12.8
作者：
Vrouwenvelder, J. S.;von der Schulenburg, D. A. Graf;van Loosdrecht, M. C. M.
通讯作者：
van Loosdrecht, M. C. M.