Biogas generation

Cutting-edge energy recovery from biowaste

The new biogas plant (co-digester) is a perfect complement to the industrial wastewater-treatment plant and sewage-sludge incinerator in our integrated waste-management system.

Sludge produced by the co-digester is thermally utilized (combusted) in the sewage-sludge incinerator. The co-digester's effluents are purified in the wastewater-treatment plant. These two steps help to permanently eliminate pollutants. In short, by working together, these three facilities can handle a wide range of liquid and hydraulically transportable wastes safely, reliably, and efficiently.

Since we can only accept digestible waste, our experts have to test it for digestibility before the first shipment is delivered. The waste can be sterilized right at the biogas plant if needed – with no hassle and no need for you to sterilize it yourself.

The waste is used to generate electricity and steam from biogas. This innovative technology represents a low-cost treatment solution for food refuse and biogenic waste flows, particularly from biochemical and pharmaceutical processes.

Our wastewater pilot plants also contain trial systems where we can test whether your co-substrates would be good candidates for co-digestion.

Waste types

• Over 100 categories of waste as defined in the Waste-Catalog Ordinance. They include homogenized food waste from food production and residues from the pharmaceutical industry
• Wastes from oil and grease traps
• Biogenic refuse from biochemical processes or food production
• Mother liquors or solvent mixtures
• Slaughterhouse wastes such as blood
• Sewage sludge, including noxious constituents
• Alcohols, glycerins, stearate, etc.

Diagram of biogas generation and utilization

Click the diagram for a larger version (only available in German).

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