Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4481296 | Water Research | 2015 | 12 Pages |
•For control purposes, a simple dynamic model of a membrane bioreactor is proposed.•The process behavior is analyzed, showing the existence of slow-fast dynamics.•A parameter identification procedure exploiting time scale separation is presented.
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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