NOVELTY - Apparatus comprises an anaerobic digestion tank (300) provided with an aerobic fermentation tank (200) for: methane fermenting the concentrated sludge and wastewater stored in a storage tank; aerobically fermenting the dehydrated cake and dehydrated filtrate via dehydration process; and coagulating digestive liquid discharged from the anaerobic digestion tank. The aerobic fermentation tank is provided in tracks form at predetermined intervals. The fermented water of the aerobic fermentation tank is agitated periodically using a driving type agitator (410) of a conveying unit (400).    USE - The apparatus is useful for aerobically digesting large and concentrated sludge, and wastewater using heating energy of fermentation column of aerobic fermentation tank (claimed).    ADVANTAGE - The apparatus is economical.    DETAILED DESCRIPTION - Apparatus comprises an anaerobic digestion tank (300) provided with an aerobic fermentation tank (200) for: methane fermenting the concentrated sludge and wastewater stored in a storage tank; aerobically fermenting the dehydrated cake and dehydrated filtrate via dehydration process; and coagulating digestive liquid discharged from the anaerobic digestion tank. The aerobic fermentation tank is provided in tracks form at predetermined intervals. The fermented water of the aerobic fermentation tank is agitated periodically using a driving type agitator (410) of a conveying unit (400). The agitator is conveyed via a rail driven by a binary chain gear, and provided on upper part of the aerobic fermentation tank. The binary chain gear is engaged on a chain which is wrapped around whole outer peripheral surface of the aerobic fermentation tank. The conveying unit is provided with a scraper (420) for flattening the dehydrated cake in the aerobic fermentation tank, and simultaneously overtopping the solid waste after completing the fermentation into a storage facility provided in the aerobic fermentation tank. The dehydrated cake is conveyed along the rail, and introduced in the aerobic fermentation tank using a hopper which moves forward and backward directions. The anaerobic digestion tank is provided with an acid fermentation chamber partitioned using a blocking wall, and a partition wall disposed in zigzag shape. The precipitates and methane ferment gradually move to first and second anaerobic chambers, and a precipitation chamber. The concentrated sludge is operated by a piston pump, and a concentrated sludge supply pipe connected with the storage tank. The anaerobic digestion tank is provided with first and second circulation pipes connected to the concentrated sludge supply pipe and the concentrated sludge injection pipe. The digested sludge is circulated by intermittent control of an air brush valve which is provided on a waste water storage tank, and third and the fourth circulation pipes connected to the first and second circulation pipes. The apparatus comprises an air supply line located on entire outer surface of the aerobic fermentation tank, an air supply blower connected to the air supply line, at least one air inlet communicated with inside of the aerobic fermentation tank at a predetermined interval of the air supply line, and a piston located in a cylinder which is provided on outer side of the air supply line to open and close the air inlet. The fermented product is aerobically fermented by forming deep hole in the fermented product using the piston, and injecting air on the fermented product.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic representation of the apparatus for aerobically digesting large and concentrated sludge, and wastewater.    Aerobic fermentation tank (200)    Anaerobic digestion tank (300)    Conveying unit (400)    Driving type agitator (410)    Scraper (420)