Novel economical three‐stage slug bubbling process in a large‐scale flat‐sheet membrane bioreactor of double deck configuration

Bing Wang, Kaisong Zhang*, Robert W. Field

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

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 SADm is 0.098 Nm3m−2 hr−1, which is a reduction of 66% compared to the most advanced single deck FSMBR.
Original languageEnglish
Article numbere16501
Number of pages12
JournalAICHE Journal
Volume66
Issue number9
Early online date15 Jun 2020
DOIs
Publication statusPublished - 1 Sep 2020

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