System BIOLAK®GAS Liquid

Technology for anaerobic wastewater treatment with energy recovery.

Two-stage fermenter for the production of biogas from highly polluted wastewater. The pre-treated outflow can be directly fed into an aerobic treatment plant (BIOLAK®Integral).


BIOLAK®GAS Liquid is used for the treatment of industrial sewage. BIOLAK®GAS Liquid can be used for CSB values from approx. 2000 mg/l up to several thousand mg/l. The BIOLAK®GAS Liquid -FFF process (solids fluids fermentation) is used for the treatment of the highly polluted water with organic side-products (e.g. distiller’s wash, rumen, shells etc.).

We have a wide range of experience in the following industrial areas:
  • Breweries
  • Dairies
  • Distilleries
  • Fruit processing
  • Beverage production
  • Potato starch processing
  • Whisky manufacturing
  • Slaughterhouses etc.
We have previously started up plants with loads of 2.45 t CSB/d to 40 t CSB/d.



Simple structure with HDPE-sealed ground basin and integrated acidification, gas storage and final clarification result in:
  • Low investment and operational costs
  • Long lifecycle
  • The investment will be redeemed in only 2-4 years
After this period, the plant will generate an additional profit.


Low space requirements and tow-stages structure with “adjusted” anaerobic sludge result in:
  • Maximum energy production
  • High process stability
  • Low space requirements, approx 25% compared to purely aerobic treatment
  • Lower maintenance expenses
  • Balancing out of the incoming gas over the course of the week
  • Optimal use of compensation for energy fed into the grid and investment subsidies for alternative energy production
  • Cleaning level up to 85-90 % CSB depletion

Secure against earthquakes

BIOLAK®GAS Liquid uses the ground basin construction method with HDPE basin sealing and is therefore robust and secure during earthquakes. Minor settlements of soil can be compensated for by the HDPE foil, avoiding leaks.