Biogas plants and anaerobic digestion
Together with BiogasTec, Trevi designs and builds installations for anaerobic digestion, commonly referred to as biogas plants. As the name suggests, these installations produce biogas, a renewable energy source derived from organic materials such as manure, organic waste, and energy crops.
What is biogas?
Biogas is not a new concept. The spontaneous fermentation of organic matter with gas formation is a natural process that has been known since ancient times.
A biogas installation creates the optimal, controlled conditions required to steer this natural process efficiently and reliably.
Anaerobic digestion takes place without oxygen and consists of four successive microbiological phases:
- hydrolysis
- acidogenesis (fermentation)
- acetogenesis
- methanogenesis
During these stages, complex organic material (biomass) is gradually converted into biogas.
Biogas mainly consists of methane (CH₄) and carbon dioxide (CO₂).
How anaerobic digestion works
While every project is different, the basic principle remains the same. A carefully selected mix of input streams is fed into a large, stirred digester tank that is maintained at a controlled temperature. The digestion process produces:
- biogas
- digestate
The biogas is used as fuel for the production of renewable electricity and heat.
The digestate is further processed into fertiliser for agricultural use and is suitable for additional treatment using proven manure processing technologies such as nitrification/denitrification and evaporation.
Our biogas project approach
Every biogas project is unique. This principle forms the basis for tailored conceptual design and accurate dimensioning. Based on the specific input streams (manure, crops, organic waste) and output requirements (fertilisers, electricity, heat), Trevi actively seeks technical and economic synergies to maximise project profitability.
BiogasTec is responsible for end-to-end project development, while sister company Trevion manages the commercialisation of the produced electricity.
Biogas reference projects
Together with BiogasTec, the following biogas installations have been realised:
Large-scale biogas plants
- Leiestroom – Menen
- Albertstroom – Grobbendonk
Medium-scale biogas plants
- Agrikracht – Moorslede
- Digrom Energy – Ardooie
Small-scale biogas plants
- Agrikracht – Rumbeke
- G.S.L. – Halle
Talk to a biogas expert
Get in touch with our biogas experts and they will help you find a suitable solution.
