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Design, analysis and validation of a simple dynamic model of a submerged membrane bioreactor
Guilherme A Pimentel1, Alain Vande Wouwer2, Jérôme Harmand3
1University of Mons - Automatic Control Laboratory - Biosys, Boulevard Dolez 31, 7000 Mons, Belgium; Equipe Projet INRA-INRIA MODEMIC, Route des Lucioles, 06902 Sophia-Antipolis, France; UMR INRA-SupAgro MISTEA, 2 Place Viala, 34060 Montpellier, France.
Abstract:
In this study, a simple dynamic model of a submerged membrane bioreactor (sMBR) is proposed, which would be suitable for process control. In order to validate the proposed model structure, informative data sets are generated using a detailed simulator built in a well-established environment, namely GPS-X. The model properties are studied, including equilibrium points, stability, and slow/fast dynamics (three different time scales). The existence of slow-fast dynamics is central to the development of a dedicated parameter estimation procedure. Finally, a nonlinear model predictive control is designed to illustrate the potential of the developed model within a model-based control structure. The problem of water treatment in a recirculating aquaculture system is considered as an application example.
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