Predictive control of activated sludge plants to supply nitrogen for optimal crop growth - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue IFAC-PapersOnLine Année : 2021

Predictive control of activated sludge plants to supply nitrogen for optimal crop growth

Résumé

We report the preliminary results of a feasibility study in which we investigate the possibility to operate a common class of activated sludge plants to produce effluent wastewater of varying quality for crop irrigation. Firstly, a nitrogen reference trajectory is computed as solution to a higher-level optimal control problem that aims at maximizing plant biomass in a crop growth system. We then study how to control the treatment plant with a zero-offset predictive control strategy designed to operate the treatment process to supply nitrogen according to this optimal planning for crop growth. We show how an ad hoc tuning of the predictive controller allows to define alternative policies that favour the manipulation of different forms of nitrogen in the treatment plant. We show that the designed controllers are only partially capable to operate the treatment plant to meet the nitrogen demand, when subjected to typical municipal wastewater influent conditions. However, zero-offset can be achieved under constant influent conditions. We analyse the performance of the controller in terms of tracking accuracy and operational energy.
Fichier principal
Vignette du fichier
Neto-IFAC-2021-CC-BY-NC-ND.pdf (1.83 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03361156 , version 1 (01-10-2021)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification

Identifiants

Citer

Otacílio B L Neto, Antoine Haddon, Farouk Aichouche, Jérome Harmand, Michela Mulas, et al.. Predictive control of activated sludge plants to supply nitrogen for optimal crop growth. IFAC-PapersOnLine, 2021, 54 (3), pp.200-205. ⟨10.1016/j.ifacol.2021.08.242⟩. ⟨hal-03361156⟩
35 Consultations
92 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More