NOVELTY - The continuous fermentation device comprises: an enclosure (100) partially filled with a fermentation material (115) and partially filled an atmosphere of above the fermentation material, where the enclosure presents a ceiling (104); a set of conduits (108, 109) configured to extend from the ceiling of the enclosure to the fermentation material in the enclosure; and a unit for injection of compressed gas in the set of the conduits. The device further comprises: a unit for injection of the fermentation material to be fermented in the conduits; and a passage control unit in the conduits.    USE - The device is useful for continuous fermentation such as anaerobic fermentation of waste for reducing the organic matter and producing energy in the form of biogas, where the waste is a household food waste, a waste from sewage treatment plants, and urban, industrial and agricultural wastes.    ADVANTAGE - The device is capable of economically performing the continuous fermentation of the waste in a simple manner.    DETAILED DESCRIPTION - The continuous fermentation device comprises: an enclosure (100) partially filled with a fermentation material (115) and partially filled an atmosphere of above the fermentation material, where the enclosure presents a ceiling (104); a set of conduits (108, 109) configured to extend from the ceiling of the enclosure to the fermentation material in the enclosure; and a unit for injection of compressed gas in the set of the conduits. The device further comprises: a unit for injection of the fermentation material to be fermented in the conduits; a passage control unit in the conduits, and a unit for sequential control of the control unit for the passage of gas in the conduits; a unit for taking away the fermentation material in the enclosure; a lid adapted to block or pass the material in each conduit; a booster supplying a gas to a chamber under pressure connected to the set of conduits; a unit for pressing or centrifugation of the material; and a unit for injection of material configured to inject a solid material output from the unit of pressing or centrifugation in the conduits or a unit for injection of material configured to inject a liquid material output from the unit of pressing or centrifugation. The unit for material injection injects the fermentation material taken by the unit for taking away the fermentation material. An INDEPENDENT CLAIM is included for a continuous fermentation method.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic sectional view of a continuous fermentation device.    Enclosure (100)    Separation wall (103)    Ceiling (104)    Conduits (108, 109)    Fermentation material. (115)