A filter device for the clarification of contaminated liquids includes a vessel configured to contain the liquid to be clarified. A first carrying disk is arranged within the vessel and is rotationally driven about a rotational axis. Mounting rods are attached to and extend generally perpendicular from the carrying disk. A plurality of filter modules including spaced apart filter elements extend generally parallel to the carrying disk. Each of the filter modules is rotationally fixed relative to the carrying disk at least in part by the mounting rods. The filter modules have a radially inward end spaced radially from the rotational axis of the carrying disk. The ends of the filter modules circumscribe a cavity within the vessel having a longitudinal axis corresponding to the rotational axis of the carrying disk. The cavity is configured such that a cleaning fluid medium from within the cavity flows radially out from said cavity and between the filter elements to clean the filter elements.