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Anaerobic biofilm processes: a review of 15 years of research

Abstract : Anaerobic biofilm reactors have to be operated in a way that optimizes on one hand the start-up period by a quick growth of an active biofilm, on the other hand the regular operation by an active control of the biofilm to avoid diffusion limitations and clogging. The start-up of anaerobic biofilm reactors may be considerably shortened by applying a short inoculation period (i.e. contact between the inoculum and the support media). Then, the increase of the organic loading rate should be operated at a short hydraulic retention time and low hydrodynamic constraints in order to favor biofilm growth. Advanced control can be used to optimize the start-up period and operate the reactors in a safer way. After the start-up period, biofilm growth should be controlled to maintain a high specific activity and prevent clogging. This can be done in particulate biofilm systems by using hydrodynamics to increase or decrease shear forces and attrition but is much more difficult in anaerobic fixed bed reactors.
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https://hal.inrae.fr/hal-02757732
Contributor : Migration Prodinra <>
Submitted on : Thursday, June 4, 2020 - 2:22:19 AM
Last modification on : Friday, February 5, 2021 - 4:02:58 AM

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  • HAL Id : hal-02757732, version 1
  • PRODINRA : 50113

Citation

Nicolas Bernet, Renaud Escudie, Frédéric Habouzit, Jean-Philippe Steyer. Anaerobic biofilm processes: a review of 15 years of research. 12th World Congress on anaerobic digestion, Oct 2010, Guadalajara, Mexico. ⟨hal-02757732⟩

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