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

Authors

  • B. Lavallée,

    Corresponding author
    1. Direction des Politiques de l'eau, Ministère du développement durable, de l'Environnement et des Parcs, Gouvernement du Québec, Canada, G1R 5V7
    • Service des eaux municipales, Ministère du développement durable, de l'Environnement et des Parcs, Gouvernement du Québec, Canada, G1R 5V7
    Search for more papers by this author
  • P. Lessard,

    1. Département de génie civil et de génie des eaux, 1065 av. de la Médecine, Université Laval, Québec, Canada, G1V 0A6
    Search for more papers by this author
  • P. A. Vanrolleghem

    1. Département de génie civil et de génie des eaux, 1065 av. de la Médecine, Université Laval, Québec, Canada, G1V 0A6
    Search for more papers by this author

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

Ancillary