GAS HOLDER OF METHANE GAS GENERATION APPARATUS

PURPOSE:To smoothly perform the storage of generated methane gas, by demarcating a first partition chamber for performing the feed-in and emission of generated methane gas and a second partition chamber for parforming the feed-in and emission of pressing gas for moving a partition diaphragm by providing said diaphragm in a freely movable manner. CONSTITUTION:Sewage of a sewage tank 24 is sent into a gas generation tank 28 through piping 26 and heated to 20-60 deg.C by a heating hot water supply pipe 84. Further, said sewage is stirred by stirring gas supplied from a gas supply pipe 82 branched from piping 32 by a blower 83 and methane gas is generated in the upper part of the gas generation tank 28. When this methane gas is supplied to a gas holder 38 through a gas feed pipe 86 to fill the same, a partition diaphragm 58 is closely contacted with the inner wall of the second partition chamber 62 formed in the bag 46 mounted in the gas holder 38 and pressing gas sent into the second partition chamber 62 by a compressor 44 for pressing said partition diaphragm 58 is entirely discharged to the outside.