Abstract: A plant for biological degradation of organic material through fermentation for production of biogas comprises a closed contained (1) for the fermentation, one or more openings (7) for removal of biogas produced in the container in the upper part of the container, members (29) configured to be driven to stir the organic material inside the container as well as members (17, 18, 21, 22) configured to be controllable to generate heat for heating the organic material in the container. At least three zones in a row between a first and a second end of the container are arranged to be consecutively passed by biological material fed through the container, and each zone has at least one stirring member controllable separately from the stirring members belonging to the other zones.

Abstract: The fermentation plant for the biological degradation of organic material and for the collection of the bio gas formed during degradation has a closed container with a filling opening for fresh material and inoculated material and discharge openings for the degradation products as well as a stirring device for mixing the fermentation material. The stirring device has circularly moving stirring blades which are preferably individually driven in the container. Scrapers are provided on the container floor with which heavy precipitates deposited on the container floor are transported in batches to a discharge device. A flow system for a heating medium is also provided on the side walls which is optionally divided into several heating circuits to vary the temperature at various sectors of the heating surface.

Abstract: A fully automatic composting plant in a closed hall closed in by walls and a roof with a plurality of composting lines disposed side by side. Disposed underneath the composting lines are ventilation channels with worm gears which are associated with the lines. Independently driven transport devices, consisting of a fixed discharging worm gear, a fixed charging worm gear above the composting lines, an inclined connecting worm gear and a distributing worm gear moveable above the composting lines, serve to add, transfer and mix the compost material and to carry out the ready-to-use humus. The connecting openings between the ventilation channels and the composting lines consist of elongated slits with cleaning cams gliding therein.