title: Optimisation of aeration for activated sludge treatment with simultaneous nitrification denitrification.
abstract: Following a promising study at pilot scale a new aeration control law has been implemented at a full scale wastewater treatment plant displaying a conventional activated sludge process. The new control law is based on the direct measurements of ammonium and nitrate concentration in the biological tank by ion selective electrodes. This control law features a cascade of two Predictive Function Controls and calculates an optimal air flow rate to be provided to the biomass through fine bubble diffusers. The results obtained at the full scale plant confirmed the high performance of this control strategy allowing to substantially reduce the amount of diffused air while providing an easy means to manage the effluent quality to the plant operator.
authors: Technical Department, Veolia Water, 1 rue GB Pirelli, 94410, Saint Maurice, France. david.thaure@veoliaeau.fr
authors: David
authors: D
authors: Thauré
authors: Cyrille
authors: C
authors: Lemoine
authors: Olivier
authors: O
authors: Daniel
authors: Nader
authors: N
authors: Moatamri
authors: Julien
authors: J
authors: Chabrol
mesh_terms: D009566:Nitrates / Q000378:metabolism*; D009573:Nitrites / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism; D015203:Reproducibility of Results; D012722:Sewage / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D009566:Nitrates; D009573:Nitrites; D012722:Sewage; D009584:Nitrogen