Stochastic Model Predictive Control of Phosphorus Concentration for Smart Power, Cost-Effective Municipal Wastewater Treatment

Mikkel Lindstrøm Sørensen, Peter Dahl, Peter Alexander Stentoft, Jan Kloppenborg Møller, Thomas Munk-Nielsen

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Abstract

This study is a proof-of-concept of a stochastic Model Predictive Control (MPC) strategy for effluent phosphorus concentration in municipal wastewater treatment. Firstly, a simple data-driven model providing adequate predictions of phosphorus was created and demonstrated. Secondly, the model was used to find the optimal aeration control upholding legal requirements within a fixed amount of computation time. The optimal control is here considered the cheapest control in terms of
electricity costs with variable electricity prices and effluent taxes on phosphorus. Results showed significant reductions (~ 45 %) in operational costs compared with a rule-based control.
Original languageEnglish
Publication date2019
Number of pages8
Publication statusPublished - 2019
Event10th IWA Symposium on Modelling and Integrated Assessment - IDA Conference Centre , Copenhagen, Denmark
Duration: 1 Sep 20194 Sep 2019
Conference number: 10
http://www.conferencemanager.dk/watermatex2019/

Conference

Conference10th IWA Symposium on Modelling and Integrated Assessment
Number10
LocationIDA Conference Centre
CountryDenmark
CityCopenhagen
Period01/09/201904/09/2019
Internet address

Keywords

  • Stochastic MPC
  • Aeration control
  • Wastewater treatment
  • Activated Sludge Process

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