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Rheological characterization of mixed liquor in a submerged membrane bioreactor: Interest for process management

Van Kaam, Romuald and Anne-Archard, Dominique and Alliet-Gaubert, Marion and Albasi, Claire Rheological characterization of mixed liquor in a submerged membrane bioreactor: Interest for process management. (2008) Journal of Membrane Science, vol. 3 (n° 1-2). pp. 26-33. ISSN 0376-7388

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Official URL: http://dx.doi.org/10.1016/j.memsci.2007.06.060

Abstract

Rheological analyses of a submerged membrane bioreactor mixed liquor were performed in the aim of characterizing the mixed liquor present in the bioreactor and thus proposing a process management. These analyses pointed out that the mixed liquor was characterized by its viscoplastic property, which leads to a possible restructuring ability when a shear stress lower than the yield stress is applied. As the shear stress in the bioreactor is essentially generated by coarse bubbles, specific experiments were carried out in which coarse bubbles were injected in an intermittent way. The results of these experiments showed that this method could avoid damage to the mixed liquor. So working with intermittent coarse bubbles is useful to prevent fouling, keep good flocculation and minimize the energy cost.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Jounral of Membrane Science website : http://www.sciencedirect.com/science/journal/03767388
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By: Hélène Dubernard

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