METHANE RECOVERY SYSTEM IN METHANE FERMENTATION FACILITIES

摘要

PURPOSE:To facilitate the formation of extensive methane fermentation facilities of lagoon type and the like by a method wherein suspended methane-recovery units including a number of methane-recovery floating sheets are engaged with the wires laid lengthwise and crosswise at the upper part of a methane fermentation tank in a freely attachable and detachable manner. CONSTITUTION:A number of supports 1 are vertically installed regularly at predetermined intervals on the floor surface of an extensive methane fermentation tank of lagoon type for example, which treats industrial waste liquid by a method of anaerobic methane fermentation and wires 2 are laid regularly lengthwise and crosswise on the upper parts of the supports in a position of about 15-25cm below the water surface. The suspended methane-recovery units 30 including a number of methane-recovery floating sheets 3 in predetermined sizes are engaged with the wires 2 in a freely attachable and detachable manner. And the methane is removed from each recovery unit 30 through a gas conduit pipe 6 and is sent through a methane-recovery pipe 10 laid on the upper parts of the supports 1 into a methane tank installed outside the fermentation tank. By this recovery system, an effective recovery of generated methane is contrived.