To prevent the shortage of oxygen and the dispersion of smell due to an excess moisture from occurring by continuously performing an odorless decomposition through mixing a photosynthesizing and deodorizing bacterium with the help of a thermal electric bulb provided and at the same time, keeping an organic matter decomposing medium agent dry to cause the decomposition and decaying process of organic garbage with a moisture contained in the garbage.
A thermal electric bulb is installed on the internal top of an almost cylindrical treatment tank 8 to emit a light to an organic matter decomposing medium agent 35 incessantly, so that a photosynthesizing and deodorizing bacterium to be mixed with the organic matter decomposing medium agent 35 continuously performs a deodorizing and decomposition activity. At the same time, an in-tank air feeder 3 is installed in a gap space between the decorative board 33 of a treating machine body 1 and the almost cylindrical treatment tank 8. The in-tank air feeder 3 is connected to an air feed hole 23 with a metal not opened in the bottom part of the almost cylindrical treatment tank 8 through an air feed pipe 24. Thus a fresh air is fed into the almost cylindrical treatment tank 8 so that the organic matter decomposing medium agent 35 is kept dry. Under this state, an organic garbage can be decomposed to decay utilizing a moisture contained in the organic garbage.
