NOVELTY - The organic refuse processing apparatus (5) has water tank (1) for accommodating water to which microorganism is mixed, unit (37-39) for supplying water to tank (1), unit (34-36) for supplying microorganism to tank (1), unit (3) for generating air bubble in water, and unit (24) for stirring water in tank (1). Tank (1) has upper water tank (21) with insertion opening (10a) for supplying organic refuse, and downstream water tank(s) (22,23) for receiving water from upstream. Tank (22,23) has wastewater port (27a) for discharging water, in opposite side of tank (21).    USE - For processing organic refuse.    ADVANTAGE - The organic refuse processing apparatus suppresses clogging of wastewater strainer, and discharges treated water does not containing untreated organic residue or non-processed residue. The organic refuse is efficiently and economically decomposed.    DETAILED DESCRIPTION - The organic refuse processing apparatus (5) has a water tank (1) for accommodating water to which microorganism is mixed, a water supply unit (37-39) for supplying water to water tank, a unit (34-36) for supplying microorganism to water tank, a bubble generation unit (3) for generating air bubble in water accommodated in water tank, and a stirring unit (24) for stirring water in water tank. The processing apparatus decomposes organic refuse supplied to water tank using microorganism. The water tank has upper water tank (21) having insertion opening (10a) for supplying organic refuse, and one or more downstream water tanks (22,23) for receiving water from upstream. The downstream water tank has wastewater port (27a) for discharging water, accommodated in opposite side of upstream water tank.    DESCRIPTION OF DRAWING(S) - The figure shows the longitudinal cross sectional view of structure of the organic refuse processing apparatus.    Water tank (1)    Bubble generation unit (3)    Organic refuse processing apparatus (5)    Insertion opening (10a)    Through hole (10c)    Partition plates (18,19)    Ventilation units (18b,19b)    Filter plate (20)    Upstream water tank (21)    Downstream water tanks (22,23)    Stirring unit (24)    Wastewater port (27a)    Microorganism supply units (34,35,36)    Water supply units (37,38,39)