为了研究膜过滤技术在水和废水处理过程中进行液固分离的可行性，构建了浸没式膜过滤系统（IMFS）。在将IMFS应用于非生物废水处理工艺，即所谓的膜生物反应器（MBR）的情况下，通常采用膜组件下方的曝气，以提供微生物生长的除氧需求，并控制膜污染。一系列实验结果表明，气泡提升驱动的水力混合方式和强度不仅取决于曝气强度，还取决于系统结构。研究还发现，由于曝气强度和系统结构的变化，水力条件的变化对膜污染和临界通量有显著影响。包括6个参考文献、图表。

An immersed membrane filtration system (IMFS) was constructed to study thefeasibility of membrane filtration technology for liquid-solid separation inwater and wastewater treatment processes. In the case of applying the IMFS to abiological wastewater treatment process, so-called membrane bioreactor (MBR),aeration underneath membrane modules is usually employed in order to provideoxygen demand for microbial growth as well as to control membrane fouling. Aseries of experimental results showed that the pattern and intensity of hydraulicmixing driven by lifting air bubbles depends on not only aeration intensity butalso system configuration. It was also found that variations of hydrodynamicconditions due to changes of aeration intensity and system configuration have asignificant influence on membrane fouling and critical flux. Includes 6 references, figures.