NOVELTY - Anaerobic digestion biogas system stabilization involves supplying (S110) carbon dioxide gas to an acid fermenter using a methane generating bath and a biogas tank. The acid fermenter and purge valves are closed after completing the fuzzy work. The supply of the carbon dioxide gas is stopped. The acid fermenter, biogas tank and methane generating bath are examined (S120). One valve is opened, which is installed at the acid fermenter. The sealed carbon dioxide gas is ejected (S130) in the acid fermenter, the methane generating bath and biogas tank.    USE - Method for stabilizing anaerobic digestion biogas system.    ADVANTAGE - The anaerobic digestion biogas system stabilization method prevents combustion explosion danger and mixing of biogas with external air, and decreases initial stabilization period.    DETAILED DESCRIPTION - Anaerobic digestion biogas system is stabilized by supplying carbon dioxide gas to an acid fermenter using a methane generating bath and a biogas tank. The acid fermenter and purge valves are closed after completing the fuzzy work. The supply of the carbon dioxide gas is stopped. The acid fermenter, biogas tank and methane generating bath are examined. One valve is opened, which is installed at the acid fermenter. The sealed carbon dioxide gas is ejected in the acid fermenter, the methane generating bath and biogas tank. The methane gas is sealed (S140) in the acid fermenter, methane generating bath and biogas tank. A seeding sludge is injected (S150) in the acid fermenter and methane generating bath. The gas melting is confirmed (S160) in methane generating bath. The high concentrated organic waste is supplied (S170) to the acid fermenter from the inflow depot.    DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart of the anaerobic digestion biogas system stabilization method. (Drawing includes non-English language text).    Supplying carbon dioxide gas to acid fermenter (S110)    Examining acid fermenter, biogas tank and methane generating bath (S120)    Ejecting sealed carbon dioxide gas (S130)    Sealing methane gas in acid fermenter, methane generating bath and biogas tank (S140)    Injecting seeding sludge in acid fermenter and methane generating bath (S150)    Confirming gas melting in methane generating bath (S160)    Supplying high concentrated organic waste to acid fermenter (S170)