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Oxygen-limited nitrification and denitrification in a lab-scale rotating biological contactor

(2002) ENVIRONMENTAL TECHNOLOGY. 23(3). p.353-362
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Abstract
Rotating Biological Contactors (RBC) treating highly nitrogenous wastewaters are known to give rise to nitrogen losses, generally assumed to be due to concomitant nitrification and denitrification In this study, a lab-scale nitrifying RBC reactor was shown to bring about losses of nitrogen of the order of 10 to 20% at ammonium loading rates of up to 2129 mg N m(-2) d(-1), when no extra carbon source was added. These higher removal values could be due to Oxygen-Limited Autotrophic Nitrification and Denitrification (OLAND), because the reactor was operated at oxygen limitation. When methanol was added as a soluble organic carbon source to further diminish oxygen transfer into the deeper parts of the biofilm, the RBC achieved 84% nitrogen removal (loading rate 2300 mg N m(-2) d(-1)) at a COD/N ratio of 3.1. The latter also suggests that the OLAND process was occurring parallel to conventional denitrification.
Keywords
oxygen-limited, RBC, simultaneous nitrification-denitrification, NITROSOMONAS-EUROPAEA, NITROGEN LOSS, NITROBACTER-WINOGRADSKYI, AEROBIC DENITRIFICATION, ACTIVATED-SLUDGE, BIOFILM SYSTEM, REMOVAL, AMMONIUM, N2O, OXIDATION

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Citation

Please use this url to cite or link to this publication:

Chicago
Pynaert, Kris, R Sprengers, J Laenen, and Willy Verstraete. 2002. “Oxygen-limited Nitrification and Denitrification in a Lab-scale Rotating Biological Contactor.” Environmental Technology 23 (3): 353–362.
APA
Pynaert, K., Sprengers, R., Laenen, J., & Verstraete, W. (2002). Oxygen-limited nitrification and denitrification in a lab-scale rotating biological contactor. ENVIRONMENTAL TECHNOLOGY, 23(3), 353–362.
Vancouver
1.
Pynaert K, Sprengers R, Laenen J, Verstraete W. Oxygen-limited nitrification and denitrification in a lab-scale rotating biological contactor. ENVIRONMENTAL TECHNOLOGY. 2002;23(3):353–62.
MLA
Pynaert, Kris, R Sprengers, J Laenen, et al. “Oxygen-limited Nitrification and Denitrification in a Lab-scale Rotating Biological Contactor.” ENVIRONMENTAL TECHNOLOGY 23.3 (2002): 353–362. Print.
@article{157441,
  abstract     = {Rotating Biological Contactors (RBC) treating highly nitrogenous wastewaters are known to give rise to nitrogen losses, generally assumed to be due to concomitant nitrification and denitrification In this study, a lab-scale nitrifying RBC reactor was shown to bring about losses of nitrogen of the order of 10 to 20\% at ammonium loading rates of up to 2129 mg N m(-2) d(-1), when no extra carbon source was added. These higher removal values could be due to Oxygen-Limited Autotrophic Nitrification and Denitrification (OLAND), because the reactor was operated at oxygen limitation. When methanol was added as a soluble organic carbon source to further diminish oxygen transfer into the deeper parts of the biofilm, the RBC achieved 84\% nitrogen removal (loading rate 2300 mg N m(-2) d(-1)) at a COD/N ratio of 3.1. The latter also suggests that the OLAND process was occurring parallel to conventional denitrification.},
  author       = {Pynaert, Kris and Sprengers, R and Laenen, J and Verstraete, Willy},
  issn         = {0959-3330},
  journal      = {ENVIRONMENTAL TECHNOLOGY},
  keyword      = {oxygen-limited,RBC,simultaneous nitrification-denitrification,NITROSOMONAS-EUROPAEA,NITROGEN LOSS,NITROBACTER-WINOGRADSKYI,AEROBIC DENITRIFICATION,ACTIVATED-SLUDGE,BIOFILM SYSTEM,REMOVAL,AMMONIUM,N2O,OXIDATION},
  language     = {eng},
  number       = {3},
  pages        = {353--362},
  title        = {Oxygen-limited nitrification and denitrification in a lab-scale rotating biological contactor},
  url          = {http://dx.doi.org/10.1080/09593332508618419},
  volume       = {23},
  year         = {2002},
}

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