300-litre anaerobic digesters (biomethanizer)

300-litre anaerobic digesters (biomethanizer)

Manufacturer: Dominion & Grimm Environnement
Model: Custom


  • Two 300-litre digesters with an effective working volume of 200 L
  • Two 300-litre pre-treatment / storage digester feed tanks
  • Automated 24-hour, continuous digester feed programming
  • Agitation of the four tanks, connected to the automate, using impeller pumps
  • Variable feed flow ranging from 5 L/min to 50 L/min
  • Fully watertight and made of stainless steel
  • Two-inch long inlet and outlet with valves for input and discharge of digestate
  • Outlet for gas collection in a Tedlar bag and septum for GC-TCD analysis
  • GCTCD biogas analysis (N2, O2, CO2, CH4) and FTIR (H2S)
  • Double wall coil heating, ranging from 21 °C to 60 °C
  • Possibility to test gas purification membranes at the exits of the two digesters

Examples of applications

  • Pre-pilot phase process development on a continuous basis (fed-batch)
  • Methane production mechanical parameter optimization (OLR, HRT)
  • Methane production physical-chemical parameter optimization (pH, T°C, etc.)
  • Long-term toxicity and inhibition tests relating to certain inputs / co-inputs
  • Assessment of biogas production using pre-treated inputs (enzymatic/thermal/chemical)
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