Award as “Low Carbon Model Company of the Year”
Under the catchword waste-to-gas we combine thermal and biological preparation stages. We interconnect the technology of anaerobic digestion with a waste o energy plant. By combining both recycling techniques, we achieve a high degree of flexibility in extracting energy. Depending on current demand on the market, the proportion of electrical energy, district heating or biogas from the recycling process is increased or reduced.
In our combined system we first separate household waste into organic waste and substitute fuels in a preparation plant. The substitute fuels are sent to waste-to-energy plants and are used there in the thermal recovery process to generate electrical energy, steam, or district heating. After sorting, the organic waste is sent for anaerobic digestion, and is fermented in fermentation tanks to make biogas. A supply network feeds the biogas thus generated to the end consumers in households and filling stations. If demand for biogas sinks, it is made available to the waste-to-energy plant by means of a gas turbine, utilising combined heat and power. Here the biogas also contributes to the generation of electrical energy or district heating. The concept ensures the ideal treatment and recycling of all household waste, while at the same time enabling highly flexible generation of energy. The combination of the three energy types can be adjusted flexibly, for example it is possible to react just as quickly and flexibly to a reduced demand for district heating during warm periods as it is to declining biogas prices.