NOVELTY - The apparatus has an organic waste acceptance portion (17) that is positioned in a gap formed between the lower ends of cylindrical structure (20). A supply apparatus (29) is provided above the acceptance portion, to supply organic waste into a container (11) of methane-fermentation apparatus (1). The methane fermentation of organic waste is performed by methane fermentation apparatus. The fermentation residue remains after the methane fermentation treatment, is discharged to exterior of container by discharging unit (15) provided in bottom portion of container.    USE - Anaerobic treatment apparatus used in waste disposal system, for treating organic waste such as organic refuse, municipal solid waste, livestock, excrement, used paper and sludge.    ADVANTAGE - The efficiency of the anaerobic treatment with respect to the organic waste can be increased reliably with sufficient precision. The solid substance residence time in the container can be shortened effectively, and hence the adhesion of the solid substance in the container can be prevented efficiently.    DETAILED DESCRIPTION - A crushing apparatus (12) is arranged in the front of an organic waste input apparatus (14), to crush the organic waste in specified manner. The residue discharged from the discharging unit, is heated by a residue heat treatment equipment. INDEPENDENT CLAIMS are included for the following:    (1) water disposal system has an incinerator for performing incineration process with respect to residue discharged by the discharging apparatus. The residue discharged from the anaerobic treatment apparatus is composted by an anaerobic treatment installation; and    (2) method for injecting organic waste into container, involves supplying organic waste to the upper portion of the cylindrical structure after crushing the organic waste in specified manner, and performing compaction process with respect to the organic waste.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the waste disposal system. (Drawing includes non-English language text)    Methane fermentation apparatus (1)    Container (11)    Crushing apparatus (12)    Input apparatus (14)    Discharging apparatus (15)    Acceptance portion (17)    Cylindrical structure (20)    Supply apparatus (29)