Title: Performance analysis and optimization of autotrophic nitrogen removal in different reactor configurations: a modelling study
Authors: Veys, Pieter ×
Vandeweyer, Helge
Audenaert, Wim
Monballiu, Annick
Dejans, Pascal
Jooken, Etienne
Dumoulin, Ann
Meesschaert, Boudewijn
Van Hulle, Stijn #
Issue Date: 1-Nov-2010
Publisher: Publications Division, Selper Ltd.
Series Title: Environmental Technology vol:31 issue:12 pages:1311-1324
Abstract: The autotrophic nitrogen removal process (partial nitritation combined with the Anammox process) is a new and
sustainable nitrogen removal technique for nitrogen-rich streams. A modelling study has been performed to define
optimal process conditions (temperature, oxygen supply, pH and biomass retention) and to investigate the influence
of chemical oxygen demand, nitrogen loading rate and hydraulic retention time on three alternative reactor
configurations: a single oxygen-limited partial nitritation reactor, a single Anammox reactor, and a combination of
partial nitritation and Anammox in a single reactor. The model applied was compared to experimental data from the
literature and gave good agreement for all three reactor configurations. The simulations revealed that a system with
separated partial nitritation and Anammox offered a wider range of optimal process conditions than a one-reactor
system. The key factors in the successful operation of partial nitritation were found to be control of aeration,
ammonium loading rate and temperature. Heterotrophs remained present in all three reactor systems and it was
confirmed that interaction between heterotrophs and Anammox and between heterotrophs and ammonium oxidizers
was possible.
ISSN: 0959-3330
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Microbial and Molecular Systems - miscellaneous
Laboratory of Virology and Chemotherapy (Rega Institute)
Technologiecluster Bioengineering Technologie
Bioengineering Technology TC, Technology Campus Ostend
× corresponding author
# (joint) last author

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