Slug bubbling in single deck flat sheet membrane bioreactor (FSMBR) is effective in controlling membrane fouling. Here the primary focus is on the employment of the slug bubbling method, with its more economical air consumption, to a double‐deck large‐scale FSMBR with 100 membrane plates on each deck. The analysis of a new design concept shows that sufficient hydrodynamic effect could be induced by a novel economical three‐stage slug aeration process of formation‐breakup‐reformation. Computational fluid dynamics simulation was applied to examine both the development of the slug bubble and especially its reformation. It was found that the combination of a gap between two decks of 400 mm with an air velocity of 16 m/s was an optimal condition to achieve good hydrodynamic conditions in both decks. The corresponding SAD_m is 0.098 Nm³m⁻² hr⁻¹, which is a reduction of 66% compared to the most advanced single deck FSMBR.

中文翻译：

---

双层配置的大型平板膜生物反应器中新型经济的三段塞鼓泡工艺

单层平板膜生物反应器（FSMBR）中的团状气泡可有效控制膜污染。在这里，主要的重点是将块状鼓泡方法（具有更经济的空气消耗量）应用于每层甲板上有100个膜板的双层大型FSMBR。对一个新设计概念的分析表明，一种新颖的经济的地层-破碎-重整的三段塞段曝气工艺可以诱导足够的水动力效果。计算流体动力学模拟被用来检查弹状气泡的发展，尤其是其变形。已经发现，两个400 mm甲板之间的间隙与16 m / s的空气速度的组合是在两个甲板上均达到良好流体力学条件的最佳条件。对应的SAD _m是0.098 Nm ³ m ^-2 hr ^-1，与最先进的单层FSMBR相比，减少了66％。