NOVELTY - An apparatus for assisting hygienization of organic waste (105A) comprises reception unit (100, 102) to receive organic solid matter (105B) and organic waste; and mixer (106) to mix waste and the matter together into organic mixture (107). The apparatus further comprises controller (114) to select whether to expose the mixture to aeration in order to create homogenized and internally oxygenous organic mixture or to heat treatment or to neither aeration nor heat treatment. The mixer is further configured to expose mixture to aeration. The apparatus further comprises delivery outlet (108).    USE - As apparatus for assisting hygienization of organic waste such as sludge (claimed) used as fertilizer; and for removing pathogenic microorganisms from biowaste.    ADVANTAGE - The apparatus effectively removes pathogenic microorganisms from bio-waste thus improving the usability of the bio-waste as fertilizer. The apparatus performs hygienization in a more optimal manner. The hygienization method carried out using the apparatus is simple.    DETAILED DESCRIPTION - An apparatus for assisting hygienization of organic waste (105A) comprises at least one reception unit (100, 102) configured to receive organic solid matter (105B) and organic waste; and a mixer (106) configured to mix the organic waste and the organic solid matter together into an organic mixture (107). The apparatus further comprises a controller (114) configured to select whether to expose the organic mixture in the mixer to aeration in order to create a homogenized and internally oxygenous organic mixture thereby accelerating the hygienization of the organic mixture, or to a heat treatment, where the heat treatment performs the hygienization of the organic mixture, or to neither the aeration nor the heat treatment. The mixer is further configured to expose the organic mixture to the aeration, or to the heat treatment, or to neither the aeration nor the heat treatment on the basis of the selection. The apparatus further comprises a delivery outlet (108) configured to pass the organic mixture to either aerobic biodegradation or an end user. The solid matter is at least one of peat, pulp, sawdust, green waste, straw, and crushed wood. An INDEPENDENT CLAIM is included for a method for assisting hygienization of organic waste involving receiving organic solid matter and organic waste; and mixing the organic waste and the organic solid matter together into an organic mixture, where the method further involves selecting whether to expose the organic mixture in the mixing unit to an aeration in order to create a homogenized and internally oxygenous organic mixture, thereby accelerating the hygienization of the organic mixture, or to a heat treatment, where the heat treatment performs the hygienization of the organic mixture, or to neither the aeration nor the heat treatment; exposing the organic mixture to the aeration, or to the heat treatment, or to neither the aeration nor the heat treatment, on the basis of the selection; and passing the organic mixture to either aerobic biodegradation or an end user.    DESCRIPTION OF DRAWING(S) - The figure shows schematic view of apparatus for assisting hygienization of organic waste.    Reception unit (100, 102)    Screw conveyer (104A, 104B)    Organic waste (105A)    Organic solid matter (105B)    Mixer (106)    Organic mixture (107)    Delivery outlet (108)    Controller (114)