AGIRA™ is a two-stage intense aerobic process for the treatment of grease and greasy sludge.


Agira™ consists of a hydrolysis tank and an aerobic bioreactor:


  • The hydrolysis tank pre-treats the greasy matters in presence of lime before entering the bioreactor.
  • The aerobic tank includes a patented foam cleaner and a dynamic mixer. This configuration enhances the biomass temperature (40-50°C) allowing high elimination efficiency in a reduced reactor footprint and low energy consumption.



The elimination efficiency of lipids reaches 70-90% depending on the grease quality and concentration.

Agira™ has a compact design and is perfectly adapted to degrade high loaded greasy effluents.


Operation and Performances


Treatment performances

  • Total COD = 80 %
  • TSS > 70 %
  • Lipids > 90 %

Operating conditions

  • Applied charge : 3 to 5 kg HEM / m3.d
  • 7,5 to 12,5 kg COD / m3.d
  • Average retention time = 45 days
  • COD / N / P ratio applied : 200 / 2,5 / 0,75
  • No recirculation from bioreactor to hydrolysis tank
  • Energy consumption : 280 to 400 Wh / kg COD treated



Two-stage intense aerobic process.



  • Treatment of grease from municipal and agro-food industries wastewaters
  • Cesspits content treatment
  • Primary sludge stabilization



20 installations in France

Need Help

If you have any questions

Please, do not hesitate to contact us!