Applied Cellular Physiology and Metabolic Engineering

Modeling of activated sludge transient behavior induced by regulation of carbon and nitrogen metabolism

  1. B. Lavallée1,*,
  2. P. Lessard2,
  3. P. A. Vanrolleghem2

Article first published online: 13 SEP 2011

DOI: 10.1002/btpr.683

Issue

Biotechnology Progress

Biotechnology Progress

Volume 27, Issue 6, pages 1522–1534, November/December 2011

Additional Information

How to Cite

Lavallée, B., Lessard, P. and Vanrolleghem, P. A. (2011), Modeling of activated sludge transient behavior induced by regulation of carbon and nitrogen metabolism. Biotechnol Progress, 27: 1522–1534. doi: 10.1002/btpr.683

Author Information

  1. 1

    Direction des Politiques de l'eau, Ministère du développement durable, de l'Environnement et des Parcs, Gouvernement du Québec, Canada, G1R 5V7

  2. 2

    Département de génie civil et de génie des eaux, 1065 av. de la Médecine, Université Laval, Québec, Canada, G1V 0A6

*Service des eaux municipales, Ministère du développement durable, de l'Environnement et des Parcs, Gouvernement du Québec, Canada, G1R 5V7

Publication History

  1. Issue published online: 1 DEC 2011
  2. Article first published online: 13 SEP 2011
  3. Manuscript Revised: 12 JUL 2011
  4. Manuscript Received: 9 MAR 2011

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Keywords:

  • accumulation capacity;
  • activated sludge;
  • mathematical modelling;
  • metabolic model;
  • nitrogen regulation;
  • structured biomass model;
  • transient behavior

Abstract

An experimental protocol to evaluate the structured biomass model proposed by Lavallée (Lavallée, Lessard, and Vanrolleghem, J Environ Eng Sci 2005;4:517–532) is presented. The protocol was devised to induce transient behavior and characterize the evolution of several internal biomass components. The proposed model is based on biochemical principles, and was fitted to the collected data. In these experiments, it was observed that filling the storage capacity of cells leads to special transient behavior, including a temporarily reduced metabolic activity. The model-based interpretation of the results showed that the observed transient behavior can be explained by cross-regulation of carbon and nitrogen metabolism. Hence, according to an extensive literature review, the cross-regulation of carbon and nitrogen can be used to model some observed transient behaviors and regulation of the storage process in activated sludge. © 2011 American Institute of Chemical Engineers Biotechnol. Prog., 2011

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