Disclosed are a dry fermentation method and a dry fermentation apparatus for food wastes, by which the steam generated during the drying fermentation process of food wastes is cooled, heated, and recycled to remove odors and improve thermal efficiency. The dry fermentation method includes the step of injecting food waste 300 into the fermentation tank 110 to generate water vapor by stirring and heating, inhaling the water vapor to heat exchange, and remaining water and water separated from the water vapor by the heat exchange. And separating the water vapor, purifying and draining the separated water, and mixing the extracted air with the outside air to reflux the inside of the fermentation tank 110.;The dry fermentation apparatus of the food waste 300 according to the heating unit the food waste 300 accommodated in the fermentation tank 110 to evaporate water and agitate at the same time and agitate, and steam generated from the fermentation tank outside the fermentation tank At the same time to separate the water and the residual steam and to discharge the separated water and at the same time there is a deodorizing unit 200 for heating the residual steam to reflux into the fermentation tank (110).
展开▼
