Abstract: A mixing system and valve(s) are provided for a tank or other container of liquid to be mixed. A directional flow control valve is secured within the tank. The directional flow control valve includes a plate secured adjacent an inlet supply opening or an outlet supply opening in the tank. The valve plate has openings for enabling controlled maximum liquid flow into or out of the inlet supply opening or the outlet supply opening, respectively. A floating disc is also provided within the valve and located in an aligned position to enable sealing engagement of the floating disc over the plate openings when the flow control valve is in a closed position, and to enable movement of the floating disc away from the plate openings when the flow control valve is in an open position. An inlet and outlet supply is also provided to supply liquid into and out of the tank. The directional flow control valve is secured adjacent either an inlet and/or outlet supply and the tank.

Abstract: A mixing system and valve(s) are provided for a tank or other container of liquid to be mixed. A directional flow control valve is secured within the tank. The directional flow control valve includes a plate secured adjacent an inlet supply opening or an outlet supply opening in the tank. The valve plate has openings for enabling controlled maximum liquid flow into or out of the inlet supply opening or the outlet supply opening, respectively. A floating disc is also provided within the valve and located in an aligned position to enable sealing engagement of the floating disc over the plate openings when the flow control valve is in a closed position, and to enable movement of the floating disc away from the plate openings when the flow control valve is in an open position. An inlet and outlet supply is also provided to supply liquid into and out of the tank. The directional flow control valve is secured adjacent either an inlet and/or outlet supply and the tank.

Abstract: An elongated suction header for use in a sludge removal system is mounted transversely on a track guide that is mounted on and driven along a track rail affixed to a floor of a tank in a water treatment facility. As the track guide moves along the track rail, the header is moved transversely to the rail adjacent the floor of the tank. In cross section, the header has a top section that is generally dome shaped and extends from a bottom wall of the header. The ends of the top section overhang beyond or extend below the bottom wall along a longitudinal axis of the header. Inlet orifices are provided in the bottom wall of the header so that sludge is drawn into an inner compartment of the header when vacuum is applied to a vacuum port that extends through the top section of the header into the header compartment. In order to assist in channeling the sludge to the inlet orifices, flow splitters extend from the bottom wall between adjacent pairs of the inlet orifices.