An apparatus for continuously treating solid waste material, which comprises； a non-pressurized container (30) with an inlet (32) for introducing waste material at a predetermined rate so that, during operation, the waste material only fills the non-pressurized container (30) to a known level, an outlet (33) for the treated waste material, and a plurality of steam inlets (38) fixed to the non-pressurized container (30) to selectively inject steam into said non-pressurized container (30), comprising the interior of the container ( 30) a first zone and a second zone are not pressurized in which, during use, the first zone is mainly filled with waste material and the second zone is essentially empty of waste material, in which a drive is arranged to rotate the vessel (30) not pressurized and therefore, during operation, move the steam inlets (38) between the first zone and the second zone, such that only some of the inputs (38) of steam are in said first zone at any time, and the apparatus further comprises a steam control means (36) comprising a distribution valve for directing steam from a steam generator to a steam inlet, comprising said distribution valve a valve body having an inlet opening (52) fluidly connectable to the steam generator and a plurality of outlet openings (54) fluidly connectable to the steam inlet, in which the distribution valve is arranged so that at any time at least one of the outlet openings (54) is fluidly disconnected from the inlet opening (52) and in which, during use, steam is only supplied to the steam inlets (38) in the first zone, characterized in that the apparatus additionally includes heating means for heating and / or maintaining the temperature inside the non-pressurized container (30) at a temperature of 150 ° C at 200 ° C, the heating means consisting of means for heating air and means for blowing said hot air into the non-pressurized container (30).Un aparato para tratar continuamente material de residuo sólido, que comprende
