NOVELTY - The primary exhaust route (29) and secondary exhaust route are held outside the treatment tank (11). The primary route has a deodorizing apparatus (33) and a primary ventilating fan (31) whose exhaust capability is more than that of a secondary ventilating fan.    USE - For decomposing organic refuse such as rotten vegetables and fish.    ADVANTAGE - Performs deodorizing process reliably due to provision of deodorizing apparatus in primary route. Discharges moisture content favorably as the primary ventilating fan has high exhausting capability.    DETAILED DESCRIPTION - The deodorizing apparatus has a heater (35) and catalyst (34) which are arranged in upstream side of the ventilating fan. An outdoor air passage (37) is formed between the deodorizing apparatus and a fan. A common filter (41) is detachably held in downstream side of the two exhaust routes which are separated by a partition plate. A housing (1) accommodates the treatment tank with an agitator (13) made of aluminum with nickel plating layer, at its bottom. A motor (17) actuates the agitator which is fixed to a vertical shaft, for mixing organic refuse and base material (18) in tank consisting an annular ring (22) at upper portion of inner wall (11b). The ring with a circular arc-shaped recess at under surface, has triangular cross-section. The ring is inserted into the tapered wall from upper direction and it meanders in zigzag direction. The tank has a cover (3) actuated by a drive mechanism (5), to open or close the opening (11a) in tank. The agitator has primary and secondary inclined stirring blades which extent downwardly from the corresponding radially extending shafts. The secondary blade (47) has a projection at its base end. A tertiary blade (48) of agitator is a bent blade attached to radially extending shaft.    DESCRIPTION OF DRAWING(S) - The figure shows a side view of the organic refuse disposer. (Drawing includes non-English language text).    housing (1)    cover (3)    drive mechanism (5)    treatment tank (11)    opening (11a)    inner wall (11b)    agitator (13)    tank heater (14)    motor (17)    base material (18)    annular ring (22)    primary exhaust route (29)    primary ventilating fan (31)    deodorizing apparatus (33)    catalyst (34)    heater (35)    outdoor air passage (37)    filter (41)    secondary stirring blade (47)    tertiary stirring blade (48)