Abstract: An endless media filtration system includes a housing with a pool forming assembly mounted between a pair of side walls. The pool forming assembly includes a central shaft with two spaced-apart containment discs rotatably mounted on the shaft between the side walls. An endless loop filter media belt is supported on an endless loop carrier belt and includes an upper run which is pressed against the peripheral edges of the discs to form a generally semicircular shaped pool along bottom arcs of the discs. A separation pan is located between upper and lower runs of the carrier belt to direct filtered liquid to one side of the carrier belt and out the bottom of the housing. A backwash assembly includes a first spray rod spraying air through the filter media, a second spray rod spraying water through the filter media, and a third spray rod spraying air through the filter media after the filter media has passed under the second spray rod.

Abstract: A gravity liquid filtration apparatus includes a housing with a pool forming assembly mounted between a pair of side walls in the housing. The pool forming assembly includes a central shaft with a pair of spaced-apart discs rotatably mounted on the shaft between the side walls. A filter media is supported on an endless loop carrier belt, and pressed against the peripheral edges of the containment discs along bottom arcs thereof to form a generally semi-cylindrical shaped pool. A liquid inflow assembly on the housing includes a delivery head with a nozzle portion having an elongated mouth aimed downwardly to discharge liquid onto a downwardly sloped portion of the filter media. A box is formed in the delivery head above the nozzle of a size to permit large objects such as pens and pencils to fall flat and be discharged through the mouth of the nozzle.