Abstract: Liquid effluents are continously discharged into a reaction chamber and vaporized by a flame formed by a jet of gaseous oxidizer which is impelled in rotational motion and into which is introduced a fluid fuel. The ignited oxidizer-fuel mixture is directed into the chamber inlet in a jet which is spatially distinct from the discharge of liquid effluents. The combustible substances contained in the simultaneously atomized liquid effluents are evaporated and burned by the jet of oxidizer-fuel mixture.