Références construction

Biogaz Grand Auch


Biogaz Grand Auch

Biogaz Grand Auch (1067 kW) – Auch (32)


Realised by Naskeo Environment:

  • Preliminary design
  • Establishment of the ICPE file
  • Monitoring and integration of the spreading plan and the building permit
  • Detailed studies
  • Request for sanitary approval
  • Provision of the turnkey installation

– Project company: Biogaz du Grand Auch (32)

– Deposits: 29 000 tonnes per year including

3 700 tons of manure

3 750 tonnes of fruit and vegetables

7 540 tonnesof sewage sludge


– Biogas recovery: Cogeneration of 1 067 kW.

– Digestate recovery: Phase separation, solid digestate application, post treatment of liquid by centrifuging, stripping and membrane bioreactor.

– Method used: Completely mixed, vitrified steel tanks.

– Thermal recovery: Production of heat supplying an animal feed plant (Sud Ouest Aliment) via a 200m steam production network.

Grants: ADEME (French Agency for Environment and Energy Management), ERDF (European Regional Development Fund), the Regional Council of the Midi-Pyrénées Region and the General Council of Gers.

CO2 emissions avoided per year: 4 456 tonnes of CO2 avoided per year. Equivalent to the electricity consumption of 1 275 families.

– Status of the project: Commissioning since August 2013.