Membrane separation processes have been more widely applied to industrial activities, especially in water and wastewater treatment. However, there are still challenges associated with the use of membranes. Concentration polarization and fouling can cause significant permeate flux decay during the filtration process, hindering its efficiency and increasing cost. Among many strategies, the combination of membrane filtration with ultrasound (US) application has shown promising results in reducing membrane fouling. The main goal of this research was to identify the effect of US frequency, US power intensity and feed solid concentration on permeate flux during ultrafiltration of simulated latex paint effluent. Maximum increase in permeate flux of 19.7% was obtained by applying 20 kHz and 0.29 W cm-2 to a feed solution containing 0.075 wt% of solid. Overall, the application of US improves permeate flux by reducing fouling of ultrafiltration polymeric membrane.

中文翻译：

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聚合物膜污染的原位超声辅助控制

膜分离工艺已更广泛地应用于工业活动，尤其是水和废水处理。然而，仍然存在与使用膜相关的挑战。在过滤过程中，浓度极化和结垢会导致渗透通量显着衰减，从而阻碍其效率并增加成本。在许多策略中，膜过滤与超声 (US) 应用的结合在减少膜污染方面已显示出有希望的结果。本研究的主要目标是确定 US 频率、US 功率强度和进料固体浓度对模拟乳胶漆流出物超滤过程中渗透通量的影响。通过将 20 kHz 和 0.29 W cm-2 施加到含有 0.075 wt% 固体的进料溶液，可使渗透通量最大增加 19.7%。