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Communication dans un congrès

Start-up and operation of anaerobic biofilm processes

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. This paper presents a synthesis of the results that have been obtained at INRA-LBE for 15 years. 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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Communication dans un congrès
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https://hal.inrae.fr/hal-02744875
Déposant : Migration Prodinra <>
Soumis le : mercredi 3 juin 2020 - 07:58:58
Dernière modification le : vendredi 5 février 2021 - 04:02:59

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  • HAL Id : hal-02744875, version 1
  • PRODINRA : 188082

Citation

Renaud Escudie, Nicolas Bernet, Frédéric Habouzit, Jean-Philippe Steyer. Start-up and operation of anaerobic biofilm processes. 6. IWA International Specialized Conference on Sustainable Viticulture - Winery 2013, Institut National de Recherche Agronomique (INRA). UR Laboratoire de Biotechnologie de l'Environnement (0050)., May 2013, Narbonne, France. ⟨hal-02744875⟩

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