Patent ID: 6790351
Filing Date: 2004-09-14
Classification: B01D

Abstract:
A liquid filtering apparatus comprising:a washbox; an airlifting tube, extending from the washbox, comprising: an expulsion end within the washbox; and an intake at a lower end opposite from the washbox; a central pipe extending along an outside surface of the airlifting tube from a position just below the washbox to a position just above the intake end; an effluent riser pipe extending along an outside surface of the central pipe from a position just below the washbox to a position above the intake end; an effluent chamber defined by the outer surface of the central pipe, a bottom plate of the effluent riser pipe, an upper plate of the effluent riser pipe, and an inner surface of the effluent riser pipe; at least one screen cartridge in communication with a lower portion of the effluent chamber, the screen cartridge oriented in a generally angular downward direction; a reject outlet pipe communicating the washbox with a reject box; and an effluent collector communicating the effluent chamber with a location outside of the liquid filtering apparatus.