DE3540508

Process for removing dispersed and dissolved substances from liquids, with feed and admixture of flocculants and/or precipitants and subsequent sedimentation and filtration, in particular for water treatment. After separating off coarse sediment, the liquid is treated in a continuously ascending stream in a fluidized bed, fine sediment is separated off and the liquid is then clarified by sedimentation. Finally, the liquid, still containing filter material suspended in it, is filtered, which filter material itself is externally cleaned. The device for carrying out the process is provided with a closed, in particular a cylindrical, housing, which is composed of a bottom section arranged at an angle to the vertical and a top, vertically orientated section. The bottom housing section is provided with first parallel surfaces (30) at a low pitch and above these, with second surfaces (32) at a greater pitch than the first surfaces. The top housing section is filled with filter material (40).