Patent ID: 6059972
Filing Date: 2000-05-09
Classification: B09B,C12M,Y02E

Abstract:
An apparatus for receiving and conditioning organic waste that operates by anaerobic bioconversion including a biomethanization process, comprising a closed tank wherein bioconversion takes place, provided at its upper part with means for removing biogas produced, and provided with means for the discrete extraction of solid residues and liquid residues, the tank including a main enclosure wherein the bioconversion takes place, and a secondary enclosure for receiving and storing ground organic waste before the transfer thereof to the main enclosure as feed for bioconversion; the secondary enclosure being separated from the main enclosure by a partition located inside the tank; the apparatus further including a device for receiving organic waste, associated with a grinder or other mechanical disintegrating means, and connected to the secondary enclosure of the tank to feed ground organic waste into the secondary enclosure; wherein:the separating partition is arranged to allow the storage in the secondary enclosure of a quantity of ground waste up to a variable level, and also to allow matter from the top of the main enclosure to overflow into the secondary enclosure;the apparatus further comprises a system of circuits for recirculating the content of the main enclosure and the secondary enclosure, comprising a pump enabling inter alia metered transfer of the content of the secondary enclosure into the main enclosure, and also distribution of the content of the main enclosure between different levels therein, by distribution means; and wherein:the apparatus is arranged so the content of the secondary enclosure is pre-heated to permit said metered transfer of the content into the main enclosure without a thermic shock liable to disturb the equilibrium of the biomethanisation process.