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Aeration and hydrodynamics in submerged membrane bioreactors

Braak, Etienne and Alliet-Gaubert, Marion and Schetrite, Sylvie and Albasi, Claire Aeration and hydrodynamics in submerged membrane bioreactors. (2011) Journal of Membrane Science, 379 . pp.1-18. ISSN 0376-7388

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Official URL: http://dx.doi.org/10.1016/j.memsci.2011.06.004

Abstract

Membrane bioreactor (MBR) is already a well-developed wastewater treatment process for both municipal and industrial applications. Nonetheless, membrane fouling remains a significant problem for its wider development. In the case of submerged membrane bioreactors (SMBRs), one of the most efficient strategies to limit fouling is the use of a gas/liquid two-phase flow to enhance the mass transfer. However, the effect of aeration still remains incompletely understood. The complexity of flows and of the nature of activated sludge makes a theoretical approach difficult. Aeration is the source of a large part of the operating costs in most industrial scale plants and its optimization is a necessity to make the process really efficient. This paper first deals with hydrodynamics in MBRs, then it reviews the parameters of aeration and their impact on filtration performance. Finally, the effects of aeration mechanisms on biological media are described.

Item Type:Article
Additional Information:Thanks to Elsevier editor.The definitive article is available at http://dx.doi.org/10.1016/j.memsci.2011.06.004
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Laboratory name:
Laboratoire de Génie Chimique - LGC (Toulouse, France) - Bioprocédés et systèmes microbiens (BioSyM)
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Deposited By: Claire ALBASI
Deposited On:07 Sep 2011 08:09

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