Abstract: A wet separator for purifying polluted conditioning air and separating solid and semi-liquid particles therefrom, especially paint particles in the outlet of a spray painting booth. For this purpose, there is a series of outlets with surfaces converging in the direction of flow into a neck or throat which increases the speed of passing media and thus achieves mixing of air, water and pollutants. According to the invention, beyond the first outlet in the direction of flow there is a dispersing chamber for further mixing and atomizing the mixture, which chamber terminates in the direction of flow in the second outlet, which is designed as a venturi with a more extensively throttled venturi opening defined by a flange extending into said opening. The outlets may be interconnected by a guiding surface, on which a dispersing stream of water droplets, air and pollutions impinge with a flat angle of impact adjacent to the second outlet at the lower end of the guiding surface.