HYKOM – Combination of Hygienisation and Hydrolysis as Pretreatment steps for liquid Substrates prior to Anaerobic Digestion.
At a glance
- Project leader : Stefan Huber, Florian Rüsch
- Co-project leader : Prof. Dr. Urs Baier
- Deputy of project leader : Dr. Hans-Joachim Nägele
- Project team : Wolfgang Merkle, Michèle Nathalie Senn, Klaus Wittwer
- Project budget : CHF 148'000
- Project status : completed
- Funding partner : Federal government (Bundesamt für Energie BFE)
- Project partner : Gebr. Klaus und Urs Wittwer / wigako
- Contact person : Florian Rüsch
Description
The HYKOM project demonstrates on a technical scale in the biogas plant of Klaus and Urs Wittwer the energetically and microbiologically optimized combination of hygienization, hydrolysis and anaerobic biogas production in the agricultural co-fermentation plant for liquid substrates. In a primary thermal treatment at 70 °C, hygienization, homogenization and thermal co-digestion are carried out.In a secondary anaerobic hydrolysis stage, the speed-limiting step of anaerobic degradation is carried out under the best possible conditions. The hydrolysis is operated continuously at a defined hydraulic retention time. The decoupling of "hygienization - hydrolysis - biogas production" stabilizes the plant operation and increases the substrate-specific biogas yield for certain substrates.