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A Model-Based Improved Control of Dissolved Oxygen Concentration in Sequencing Wastewater Batch Reactor
Abstract
Biochemical processes at wastewater treatment plant are complex, nonlinear, time varying and multivariable. Moreover, relationships between processes are very strong. One of the most important issues is exerting proper control over dissolved oxygen levels during nitrification phase. This parameter has a very large impact on activity of microorganisms in activated sludge and on quality of pollution removal processes. Oxygen is supplied by aeration system which consists of many nonlinear elements (blowers, pipes, diffusers). In this paper, the sequencing batch reactor is applied and modelled. Also, the aeration system is modelled. Those models are validated based on real data sets. The adaptive control system with anti-windup filter is proposed and designed for tracking the reference trajectory of dissolved oxygen. Furthermore, the reference trajectory of dissolved oxygen is generated by the supervisory controller using NH4 measurements. Simulation results of control system are calculated for a case study plant located in Swarzewo, Northern Poland.
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- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.24846/v23i4y201402
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
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Studies in Informatics and Control
no. 23,
pages 323 - 332,
ISSN: 1220-1766 - Language:
- English
- Publication year:
- 2014
- Bibliographic description:
- Błaszkiewicz K., Piotrowski R., Duzinkiewicz K.: A Model-Based Improved Control of Dissolved Oxygen Concentration in Sequencing Wastewater Batch Reactor// Studies in Informatics and Control. -Vol. 23, nr. 4 (2014), s.323-332
- DOI:
- Digital Object Identifier (open in new tab) 10.24846/v23i4y201402
- Verified by:
- Gdańsk University of Technology
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