Anaerobic digestion of gelatinous water at laboratory and pilot scale and nitrogen inhibition - Session PP3B – Inhibition 2 - Agropolis Accéder directement au contenu
Communication Dans Un Congrès Année : 2007

Anaerobic digestion of gelatinous water at laboratory and pilot scale and nitrogen inhibition - Session PP3B – Inhibition 2

Résumé

The anaerobic digestion of the liquid residue (gelatinous water) coming from the production of fat from animal residue, was studied at laboratory and pilot scale. Biodegradability (> 98 %) and biogas potential (675 mL of biogas/g of CODapplied) of this wastewater are very high. However, due to the high content on nitrogen, an inhibition of the anaerobic activity was observed for quite low concentrations of N-NH3. Dilution of the wastewater and pH regulation in the reactor around 7.3 are the 2 solutions which were investigated to overcome the nitrogen inhibition at industrial scale. These two solutions were validated at laboratory scale in an anaerobic SBR and then onsite at pilot scale in a continuous reactor. A stable anaerobic digestion was observed in both reactors showing that no nitrogen inhibition was obtained when N-NH3 concentration in the reactor was kept low.
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Dates et versions

hal-02754766 , version 1 (03-06-2020)

Identifiants

  • HAL Id : hal-02754766 , version 1
  • PRODINRA : 219295

Citer

D. Martinez-Sosa, Yan Rafrafi, Michel Torrijos, Nicolas Bernet, G. Buitron, et al.. Anaerobic digestion of gelatinous water at laboratory and pilot scale and nitrogen inhibition - Session PP3B – Inhibition 2. 11th World Congress Anaerobic Digestion Bio-energy for our Future, International Water Association (IWA). INT., Sep 2007, Brisbane, Australia. ⟨hal-02754766⟩
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