title: Would a two-stage N-removal be a suitable technology to implement at full scale the use of anammox for sewage treatment?
abstract: Sewage treatment with anammox could be implemented through a two-step reactor system, where the first reactor would be devoted to partial nitritation. A process design was sketched including control loops. The control strategy regulates the flow-rate of the rich ammonium sidestream produced after dewatering the digested sludge, to keep the ammonium concentration at a set point in the partial nitritation reactor by DOsing the SIde Stream (DOSIS). A second control loop manages the ammonium concentration set point based on the measurement of the total nitrogen in the partial nitritation reactor. A mathematical model was developed to assess the amount of sidestream required. Even in the case of a strong diurnal variability, simulations show how the control strategy is correctly performing, demonstrating the potential of the proposed technology.
authors.affiliation: GENOCOV Research Group, Department of Chemical Engineering, School of Engineering, Universitat Autònoma de Barcelona, Ed. Q - Campus UAB, 08193 Bellaterra, Barcelona, Spain E-mail: julio.perez@uab.es; Department of Biotechnology, Delft University of Technology, Julianalaan 67, 2628 BC Delft, The Netherlands.
authors.forename: J
authors.initials: J
authors.lastname: Pérez
authors.affiliation: GENOCOV Research Group, Department of Chemical Engineering, School of Engineering, Universitat Autònoma de Barcelona, Ed. Q - Campus UAB, 08193 Bellaterra, Barcelona, Spain E-mail: julio.perez@uab.es.
authors.forename: E
authors.initials: E
authors.lastname: Isanta
authors.affiliation: GENOCOV Research Group, Department of Chemical Engineering, School of Engineering, Universitat Autònoma de Barcelona, Ed. Q - Campus UAB, 08193 Bellaterra, Barcelona, Spain E-mail: julio.perez@uab.es.
authors.forename: J
authors.initials: J
authors.lastname: Carrera
mesh_terms: D019149:Bioreactors; D009584:Nitrogen / Q000737:chemistry*; D000644:Quaternary Ammonium Compounds; D012722:Sewage / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D000644:Quaternary Ammonium Compounds; D012722:Sewage; D009584:Nitrogen