Abstract: The present invention relates to a method and equipment for carrying out the degradation of various organic products or waste in an anaerobic medium. The equipment comprises a plurality of ducts for reinjecting biogas into a fermentation vat sidewise spaced from each other and disposed at least in the major part of the vat, the duct being fed with biogas individually or in groups through independent valves so as to subdivide the fermentation vat into sectors independently fed with biogas. Preferably, a container is provided for storing biogas under pressure. These features lead to a simplification of the equipment and a decrease in the manufacturing costs.

Abstract: A method and apparatus for carrying out a degradation in an anaerobic medium, such as a methanogenesis, of organic products, by-products or waste from human, animal and/or plant origin, involving feeding said products to be degraded into a closed fermentation vessel, forcing said products to flow in a direction of circulation within said vessel and recovering the gas produced called biogas evolved above said body of degraded products, with the feeding and/or discharge of the products performed pneumatically, preferably through pneumatic thrust and, according to a preferred embodiment, by injection of gas, preferably biogas. A further improvement comprises using the biogas produced for homogenizing said body of products contained within said vessel, the pressure of injection being in relation to the actual density of the products, in the injection related section.