(DE3811399-C)      Organic material rolling to compost in a closed container is supplied with fresh air.    Waste air heated by the composting and charged with moisture is removed and cooled by an air/air or air/water heat exchanger.    Before release into the atmos., the heated waste air is passed through a both of liq., esp. condensate.    Recovered heat is used directly and/or by a heat pump.    Operation of flow directing valves is dpendent on atmos. temp. condensate is used for irrigation and/or drinking water prodn.    ADVANTAGE -   Discharge of smells into atmos. is largely avoided.    (7pp)    (EP322424-B)      A process for aerobic fermentative hydrolysis, in particular composing of organic substances (1) in a closed container (5), wherein fresh air is supplied to the organic substances (1), wherein the used air which is loaded with heat and moisture is removed and cooled so that the moisture condenses out in the form of a condensate (14), and wherein the used air is carried off to the atmosphere at a ambient temperature and without moisture, characterised in that the cooled and dried used air is passed through a water bath, namely the condensate (14).    (13pp)    (EP296645-B)      A process for aerobic fermentative hydrolysis, in particular composting of organic substances (1) in a closed container (5), wherein fresh air is supplied to the organic substances (1), wherein the used air which is loaded with heat and moisture is removed and cooled so that the moisture condenses out in the form of a condensate (14), and wherein the used air is carried off to the atmosphere at ambient temp. and without moisture, characterised in that the cooled and dried used air is passed through a water bath, namely the condensate (14).    (14pp)    (DE3869584-G)      Organic waste is converted to compost by aerobic fermentative hydrolysis in a totally enclosed bin.    Fresh air is injected in the organic waste and the outgoing air, laden with heat and moisture, is cooled to condense the moisture.    It is thus emitted to atmos. at ambient temp. and dry. The totally enclosed fermenter has a perforated plate on which the organic waste rests above an air chest, supplied with air by a blower.    A fresh air inlet has a butterfly valve and passes the air through heat exchanger tubes.    The laden outgoing air reaches the space of the heat exchanger, where the condensate is drained by a float controlled valve.    A valve permits the waste air to be cooled by the unit.    ADVANTAGE -   This prevents the pollution of the environment by evil smells.    (DE3844857-A)      Organic waste is converted to compost by aerobic fermentative hydrolysis in a totally enclosed bin. Fresh air is injected in the organic waste and the outgoing air, laden with heat and moisture, is cooled to condense the moisture. It is thus emitted to atmos. at ambient temp. and dry.    The totally enclosed fermenter has a perforated plate on which the organic waste rests above an air chest, supplied with air by a blower. A fresh air inlet has a butterfly valve and passes the air through heat exchanger tubes. The laden outgoing air reaches the space of the heat exchanger, where the condensate is drained by a float controlled valve. A valve permits the waste air to be cooled by the unit.    ADVANTAGE -   This prevents the pollution of the environment by evil smell