NOVELTY - The apparatus comprises a drive motor, a stirring chamber mounted on an upper portion of the drive motor, a rotary shaft, an exhaustion impeller connected with the rotary shaft along a vertical direction and positioned at a lower part of the stirring chamber for discharging food wastes, an air inlet part, a circulation impeller installed on the rotary shaft along the vertical direction, a venting system, and a unit for supplying air between secured spaces. The rotary shaft is connected with a driving shaft of the drive motor, and is extended to inner portion of the stirring chamber.    USE - The apparatus is useful for fermenting food waste (claimed).    ADVANTAGE - The apparatus rapidly ferments the food waste with improved fermentation efficiency.    DETAILED DESCRIPTION - The apparatus comprises a drive motor, a stirring chamber mounted on an upper portion of the drive motor, a rotary shaft, an exhaustion impeller connected with the rotary shaft along a vertical direction and positioned at a lower part of the stirring chamber for discharging food wastes, an air inlet part, a circulation impeller installed on the rotary shaft along the vertical direction, a venting system, and a unit for supplying air between secured spaces. The rotary shaft is connected with a driving shaft of the drive motor, and is extended to inner portion of the stirring chamber. The air inlet part is arranged to supply air to a lower part of the stirring chamber while being positioned in an upper portion of the exhaustion impeller. The exhaustion impeller and the circulation impeller have a bar installed on the rotary shaft along the vertical direction to continuously mix the food waste with a fermenting agent. The venting system is installed on a vent positioned on the lower part of the stirring chamber to control the exhaustion and transfer rates of the food waste. The exhaustion impeller comprises an impeller and a blade installed on a structure, and is installed along an oblique direction to stick a bottom surface of the stirring chamber. The air inlet part provides air from outside of the stirring chamber. The circulation impeller is communicated with a brush for receiving air from the air inlet part, and comprises an air foil having a streamlined structure. The airfoil is installed at inside of the rotary shaft to be rotatable, and is connected with an end part of a coupling shaft. The coupling shaft is perpendicularly extended from the rotary shaft. The space is secured with an opposite direction of the rotational direction. The brush comprises an air-supply, and extends and communicates with the air inlet part. One end of a brush cover of the brush is provided with a cylinder structure that is set on an upper end portion of multiple holes of the rotary shaft. Two bearings including an upper bearing and a bottom bearing are arranged on a lower end portion of the rotary shaft.