NOVELTY - The organic wastes treatment device comprises a unit for recovery and isolation of windrows from external environment, a unit (2) for coupling and circulation of gas and liquid between the windrows, and a unit for dampening the windrow. The recovery unit is impermeable to gas and liquid, and equipped with a longitudinal vent for the evacuation of effluent gas produced during the oxidation-reduction process for thermophilic aerobic composting. The coupling unit is constituted of a tunnel formed by assembling an upper part with a water proof-, air proof- and gas proof cover on the vent.    USE - The device is useful for treating organic wastes laid in two windrows by composting, where the windrows are arranged in soil or silo.    ADVANTAGE - The device provides optimized protocols for thermophilic aerobic composting of organic wastes in aerated sheeted windrow using cheaper materials, protects the windrows from rainfall thus preventing the risk of storm or flooding, is efficient to prevent health risks from the generation of aerosols rich in bacterial spores, and can be simply manufactured with high durability and high resistance.    DETAILED DESCRIPTION - The organic wastes treatment device comprises a unit for recovery and isolation of windrows from external environment, a unit (2) for coupling and circulation of gas and liquid between the windrows, and a unit for dampening the windrow. The recovery unit is impermeable to gas and liquid, and equipped with a longitudinal vent for the evacuation of effluent gas produced during the oxidation-reduction process for thermophilic aerobic composting. The coupling unit is constituted of a tunnel formed by assembling an upper part with a water proof-, air proof- and gas proof cover (1a) on the vent of a primary recovery unit. The dampening unit produces hygrometric maintenance of substrates contained in the windrows.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic cross-sectional view of a windrow.    Cover of primary recovery unit (1a)    Cover of secondary recovery unit (1b)    Coupling unit (2)    Closed end (6)    Open end (7)    Connection piece. (8)