NOVELTY - Device comprises a fermenter (100) for storing food waste internally and fermenting food waste by introducing microbes, a heating unit (200) for heating interior of the fermenter, a stirring unit (300) for stirring food waste stored in the fermenter, and a transporting unit (400) for transporting food waste which is fermented, dried and discharged from the fermenter. The stirring unit comprises a stirring shaft (310) coupled rotatably to the fermenter, several blades arms, a first blade plate, and a second blade plate formed inclined relative to the stirring shaft.    USE - The device is useful for fermenting and drying organic or inorganic sludge (claimed).    ADVANTAGE - The device ferments and dries organic or inorganic sludge in simple and quick manner.    DETAILED DESCRIPTION - Device comprises a fermenter (100) for storing food waste internally and fermenting food waste by introducing microbes, a heating unit (200) for heating interior of the fermenter, a stirring unit (300) for stirring food waste stored in the fermenter, and a transporting unit (400) for transporting food waste which is fermented, dried and discharged from the fermenter. The stirring unit comprises a stirring shaft (310) coupled rotatably to the fermenter, several blades arms arranged spirally spaced apart in the longitudinal direction of the stirring shaft, coupled to the stirring shaft, a first blade plate coupled to an end of the blade arm, and a second blade plate formed inclined relative to the stirring shaft, coupled to the blades arm between the end of the blade arms and the stirring shaft. The fermenter comprises a supplying hole for receiving the food waste, a first outlet hole for discharging the fermented and dried food waste, and a second outlet hole for discharging gases formed during fermenting and drying the food waste. The opening or closing of the first outlet hole has a discharge gate. The second blade plate is inclined away from the stirring shaft increasingly towards the other end from one end of the stirring shaft, and coupled to the blade arms to adjust inclination angle for the stirring shaft.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the device for fermenting and drying organic or inorganic sludge.    Fermenter (100)    Heating unit (200)    Stirring unit (300)    Stirring shaft (310)    Transporting unit (400)