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Single and Multiobjective Optimal Control of the Wastewater Treatment Process

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Abstract

This paper involves the use of state-of-the-art optimization techniques to conduct the wastewater treatment process in the most beneficial manner possible. Rigorous single- and multi-objective optimal control tasks are performed on the reduced BSM1 (benchmark simulation model 1) for the wastewater treatment process problem. The multiobjective optimization does not involve weight functions or additional constraints. The state-of-the-art global optimization solver BARON is used. The concentrations of the Nitrite/Nitrate, ammonium and biodegradeable organic contaminants are minimized. While the single and multiobjective optimal control profiles for the Nitrite/Nitrate and the biodegradable substance concentrations were qualitatively similar, there was considerable difference between the two profiles when the ammonium concentration profile was minimized. However, when the time for the multiobjective optimal control was increased, resulting profiles for the ammonium concentrations became similar. This demonstrated that increasing the time enabled the multiobjective optimal control to be as effective as the single objective optimal control while controlling all the variables.

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  1. Chemical Engineering Dept, University of Puerto Rico Mayaguez, Mayagüez, Puerto Rico

    Lakshmi N. Sridhar

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  1. Lakshmi N. Sridhar
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Sridhar, L.N. Single and Multiobjective Optimal Control of the Wastewater Treatment Process. Trans Indian Natl. Acad. Eng. 7, 1339–1346 (2022). https://doi.org/10.1007/s41403-022-00368-6

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