Patent ID: 7091036

Claim:
A method for composting organic material, in which method organic material is transported to a bioreactor ( 1 ), where it is mixed, and where the material regulating the oxygen content and bacteria and/or enzymes for agitation of composting process are added to it and where organic material may compost, after which the composted material is transported for stabilization outside the bioreactor, characterized in that the organic material in the bioreactor ( 1 ) is transported by the mixing transporting device ( 2 ) upwards against an upper hemispherical wall ( 11 ) such, that the material turns following mainly spherical course upwards and falls down to the direction mainly opposite in respect with the transporting direction and down, and that the fallen organic material is directed against a V-shaped wall ( 16 ) splitting the material and which is positioned opposite the hemispherical wall ( 11 ) of the bioreactor ( 1 ) and from there back to the transporting device thus spreading the organic material to a smaller particle size and the particles while falling down come into contact with oxygen and moisture of the air in the bioreactor ( 1 ).