Abstract: An aggregating device for separating solid material particles and fibers from liquid materials, and/or separating solid material particles and fibers from aerosols. The aggregating device includes i) a conveying means selected from a group consisting of a conveyor belt, a liquid pressure, a liquid column and a liquid wave of the liquid material, a centrifugal force, a centripetal force, an injector, a venturi device, a diffuser, a ducted turbine, a delta wing concentrator, an annular venturi device, a magnus effect turbine, a passive and active convection, effusion and diffusion, for receiving and/or conveying an aerosol and/or a liquid material in the conveying direction into the aggregating device, ii) an exciter for generating an acoustic sound wave which impinges upon the aerosol and/or the liquid material, and iii) a means for separating condensed liquids and/or aggregated solid materials from the aerosol and/or the liquid material.