NOVELTY - A decomposition tank (21) has a metal plate (23) which supports porous inorganic material used for decomposing organic refuse. A sound insulation rubber (9') and a vibration- proof rubber (10') are inserted respectively between the tank and tank lid (9) and between leg (10) of the tank and floor surface. A partition plate arranged at front side of tank enables storage of accessories in a kitchen cabinet.    USE - The organic refuse decomposing apparatus is useful for installation in a kitchen cabinet, or under a sink.    ADVANTAGE - Enables easily arranging the decomposition tank below the kitchen sink, due to compact structure of the tank. Prevents generation of vibration and sound, by provision of the vibration-proof rubber and the sound-insulating rubber. Enables decomposing organic refuse efficiently by using zeolite group material for treating organic refuse. Prevents generation of bad smell in the tank by use of the porous material for decomposing organic refuse, instead of solid material.    DETAILED DESCRIPTION - An inlet tube (6) for supplying organic refuse to the tank arranged inside the kitchen cabinet is inserted in the central upper portion of rear wall of the tank. A drain chamber (20) connected to a drain pipe is provided at the bottom of the decomposition tank. A feed pipe for supplying a liquid biological treatment agent for organic refuse, is connected to the upper portion of the tank. A water supply pipe (18) is connected to the tank. A motor (3) is connected to a drive sprocket (2) which is connected to a driven sprocket (5) fixed to the end of a stirring shaft which supports a stirring blade (7) for stirring organic refuse. A bearing which supports the stirring shaft is attached to the side wall of the tank. A panel shaped heater is mounted at the outer wall of the tank for controlling temperature inside the tank. An air supply pipe is connected to the tank.    DESCRIPTION OF DRAWING(S) - The figure shows the perspective view of the organic refuse decomposition apparatus.    Drive sprocket (2)    Motor (3)    Driven sprocket (5)    Stirring blade (7)    Tank lid (9)    Sound-insulation rubber (9')    Leg (10)    Vibration-proof rubber (10')    Water supply pipe (18)    Drain chamber (20)    Decomposition tank (21)    Metal plate (23)