Substrate (manure, gras, liquid manure, corn,…) which has gone through the biochemical degradation process in the primary or the secondary fermenter.
Fermenting container, gas proof and heated. This container is feeded with fresh “forage”= substrate (grass, GPS, manure, corn, …) on a daily basis, which starts fermenting and producing biogas under optimal conditions. Most used in plants with a storage flow principle with linear pit control. (1. pit = fermenter, 2. pit = secondary fermenter, 3. pit = final storage).
Container that is usually gas proof and is not heated. The fermented material is stored until it is distributed as fertilizer on agricultural areas.