Cost-efficient operation of a denitrifying activated sludge process |
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Authors: | Samuelsson Pär Halvarsson Björn Carlsson Bengt |
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Affiliation: | Department of Electrical Engineering, Dalarna University, SE-781 88 Borl?nge, Sweden. psa@du.se |
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Abstract: | In this paper, the choice of optimal set-points and cost minimizing control strategies for the denitrification process in an activated sludge process are treated. In order to compare different criterion functions, simulations utilizing the COST/IWA simulation benchmark are considered. By means of operational maps the results are visualized. It is found that it is easy to distinguish set-point areas where the process can be said to be efficiently controlled in an economic sense. The characteristics of these set-point areas depend on the chosen effluent nitrate set-point as well as the distribution of the different operating costs. It is also discussed how efficient control strategies may be accomplished. |
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Keywords: | Activated sludge process Cost-efficient operation Denitrification Operational maps Fee functions |
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