Energy from Waste

From organic waste to biogas with anaerobic digestion

Many types of waste contain biogenic parts, such as food waste, vegetable scraps or green cuttings from the garden. These waste components are typically moister than the rest of the waste, and their calorific value is lower. Therefore, organic waste is less suited to thermal recovery, but all the more so for biological conversion into biogas. The anaerobic digestion of these organic fractions is becoming increasingly important in the treatment of waste, so-called “methanation”. Steinmüller Babcock Environment plans and builds plants in which the biogenic parts of waste can be converted very efficiently into biogas. Our mechanical-biological treatment plants work at mesophilic or thermophilic temperature conditions and can treat the entire spectrum of waste, from separately collected organic waste to organic fraction of mixed household waste.

Our digestion tank is characterised by a special process dynamic: The horizontal motion of the digestate from the material feed around a partition wall to the outlet prevents short-circuit flows. Based on decades of experience with anaerobic technology, we use a digestion tank system without movable components. 

This prevents wear and damages to the agitator. One digestion tank covers an output range from 20,000 – 40,000 Mg/a; the combination of several digestion tanks allows throughputs of up to 200,000 Mg/a in one plant.

After digestion the residues are composted, prepared and made available as fertiliser. Depending on the waste, the biogas yield is between 110 and 150 Nm³/h per ton of waste. The biogas can be converted into power with either a gas engine or a gas turbine, or is upgraded to biomethane, which is fed directly into the natural gas network, thus replacing fossil fuels. Our biogas generation methods are particularly suitable for treating different types of waste. It is one of the most efficient methods on the market in terms of biogas yield and the space required for the plant. 

Our services

  • Turnkey execution, from permit planning to power operation
  • Treatment plants for biomethane to be fed into the network, or for alternative use
  • Energetic utilisation of the biogas to generate power, heat or steam, for example in cogeneration units
  • Digestion plants adapted to each specific task, from mechanical pre-treatment to aerobic secondary treatment and contaminant removal
  • Treatment of the process exhaust air using chemical, biological or thermal methods (scrubbers, bio filters or regenerative-thermal oxidation)   

As the leading producer of thermal and biological waste treatment plants we also offer plants that efficiently combine the advantages of the biological method with those of thermal processes. You can find more information on this aspect under the menu item Waste-to-Gas.

Process dynamic of anaerobic digestion by Steinmüller Babcock Environment

Process dynamic of anaerobic digestion by Steinmüller Babcock Environment

Steinmüller Babcock Environment GmbH

Fabrikstraße 1

D-51643 Gummersbach, Germany

+49 (0) 2261 85 - 0

+49 (0) 2261 85 - 2999