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A MODEL-BASED EVALUATION OF CONTROL STRATEGIES FOR A CLARIFIER AT AN INDUSTRIAL WASTEWATER TREATMENT
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BibTeX
@MISC{Clercq_amodel-based,
author = {B. De Clercq and L. N. Hopkins and P. A. Vanrolleghem},
title = {A MODEL-BASED EVALUATION OF CONTROL STRATEGIES FOR A CLARIFIER AT AN INDUSTRIAL WASTEWATER TREATMENT},
year = {}
}
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Abstract
The aim of this paper is to determine appropriate control strategies for a clarifier at an industrial wastewater treatment plant. This work is part of a larger project aimed at upgrading the control and operational practices of the full treatment plant, including the development of local and supervisory control systems. Five control strategies are proposed, implemented in a simulation environment and evaluated. The strategies used as measured variable, the sludge blanket height, which has been shown to correlate with the control objective, the effluent suspended solids concentration. The manipulated variable was the quantity of polymer added to the system. The strategies were evaluated in terms of their ability to maintain the sludge blanket height below 1.5m, their polymer requirements, their sensitivity to poor tuning and the required control action. The final choice of controller will be based on the ease and cost of implementation. KEY WORDS local control, secondary clarifier, simulation studies
Keyphrases
simulation environment solid concentration simulation study operational practice full treatment plant measured variable sludge blanket appropriate control strategy manipulated variable final choice secondary clarifier polymer requirement key word local control supervisory control system control strategy industrial wastewater treatment plant control objective poor tuning sludge blanket height required control action
