Application of Models in Developing Control Strategies for Activated Sludge Waste Water Treatment Plants

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Abstract
This paper studies control of activated sludge plants using recycle and wastage flow rates as control variables. The behaviour of the control algorithms was studied using simulation techniques. The results indicate that the process is not sensitive to the recycle flow rate. Wastage flow control with the objective to keep the sludge concentration constant turned out to be promising.

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