1. Aeration control in a full-scale activated sludge wastewater treatment plant: impact on performances, energy consumption and N2O emission
- Author
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Filali, A., Fayolle, Y., Peu, P., Philippe, L., Nauleau, F., Gillot, S., Hydrosystèmes et bioprocédés (UR HBAN), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Gestion environnementale et traitement biologique des déchets (UR GERE), Recherche et Développement, SAUR, and Hydrosystèmes et Bioprocédés (UR HBAN)
- Subjects
EAU USEE ,NITROUS OXIDE EMISSION ,TRAITEMENT DE L'EAU RESIDUAIRE ,STATION D'EPURATION ,AERATION ,[SDE]Environmental Sciences ,AERATION CONTROL STRATEGY ,ACTIVATED SLUDGE ,BOUES ACTIVEES ,EPURATION ,CONSOMMATION D'ENERGIE ,PROTOXYDE D'AZOTE ,STATION DE BOUES ACTIVEES - Abstract
International audience; This work investigated the impact of aeration control strategy on energy consumption and nitrous oxide (N2O) emission in a full-scale wastewater treatment plant. Two identical activated sludge processes treating the same effluent but operated with different aeration control strategies were compared. Aeration tank 1 was operated with a new control strategy favouring the simultaneous nitrification denitrification (SND) whereas aeration tank 2 was operated with a conventional control strategy with distinct nitrification and denitrification phases. Results indicated that whereas the N2O emission factor was comparable in both systems (in the order of magnitude of 0.004% of the influent TKN load), N2O emission pattern was dependent on the adopted aeration control strategy. It has been observed that high aeration
- Published
- 2013