NOVELTY - The aerobic treatment device comprises an intensive treatment section (2), which is sealed against vapor and has a loading opening (5) at one end region of the section for introducing biomass (9), and a post-treatment section (3), which directly adjoins the intensive treatment section. A post-treatment section end region further away from the loading opening is equipped with a removal point (6) for removing the biomass. A tunnel-like or line-like is formed in the region of the intensive treatment section and/or the post-treatment section. The device further comprises a moving device.    USE - The device is useful for aerobic treatment of stackable biomass (claimed).    ADVANTAGE - The device enables the aerobic treatment of stackable biomass in economical manner.    DETAILED DESCRIPTION - The aerobic treatment device comprises an intensive treatment section (2), which is sealed against vapor and has a loading opening (5) at one end region of the section for introducing biomass (9), and a post-treatment section (3), which directly adjoins the intensive treatment section. A post-treatment section end region further away from the loading opening is equipped with a removal point (6) for removing the biomass. A tunnel-like or line-like is formed in the region of the intensive treatment section and/or the post-treatment section. The device further comprises a moving device, and a flexible separating element. The moving device is moved over the entire length of the intensive treatment section and over the entire length of the adjoining post treatment section, and is designed to move the biomass in a direction of the removal point and in the opposite direction. The separating element is provided in a region of the intensive treatment section for preventing gas exchange between intensive treatment section and the post-treatment section and/or the gas exchange between the ambient atmosphere in the region of the loading opening and the intensive treatment section. The separating element comprises skirt and/or inflatable body. A ventilation device is provided in a bottom area of the intensive treatment section. The moving device includes a transcribing roller displaceable by pivoting and/or translation, and a conveyor. The device further comprises a shed, which partially extends the intensive treatment section, and a hall having a lock with lockable ports or an air curtain device for introducing or discharging the moving device. The intensive treatment section is an intensive serviette, and the post-treatment section is a maturing process. An INDEPENDENT CLAIM is included for a process for aerobic treatment of stackable biomass.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic sectional view of an aerobic treatment device.    Intensive treatment section (2)    Post-treatment section (3)    Loading opening (5)    Removal point (6)    Stackable biomass. (9)