apparatus for treating waste , particularly household waste , by means of composting . the waste is collected in a generally known fashion into the collecting bowl , wherefrom they are immediately moved on the spiral conveyor into the mixing drum , which is set into rotating motion by means of the actuator . inside the mixing drum there is arranged an amount of such medium substance which is formed of separate plastic or steel bullets , onto the surface whereof the waste sticks during mixing . in connection to the mixing drum there is arranged the discharge space , which is provided with separator means for separating the composted waste or soil . the compost soil is continuously moved out of the discharge space and further into a bag or the equivalent . a partial feedback of the soil is arranged from the discharge space back into the collecting bowl .