Patent ID: 9079784
Filing Date: 2015-07-14
Classification: B01D,C02F,Y02W

Abstract:
1. A water filtration system, comprising: a treated water container and a water treatment container located substantially within the treated water container, the water treatment container being configured to receive untreated water and to treat the untreated water to yield treated water that is passed to the treated water container for storage and/or dispensing; the treated water container comprising a container having a bottom and a sidewall extending upwardly from the bottom; the water treatment container comprising an upper section configured to receive a volume of water to be treated; a first and a sand containing section within the container and below the upper section having sand that includes a bio-layer having a thickness at the uppermost portion of the sand; a sand separator comprising a vertical chamber having a bottom opening located within the sand containing section and in flow communication with the water treatment container, the exterior of the vertical chamber of the sand separator being covered with sand and configured to separate sand in the water treatment container from treated water passing to the treated water container; and a flowpath extending upwardly into the bottom opening of the vertical chamber of the sand separator via an opening in the bottom of the water treatment container to a location outside of the sand separator defining a treated water output, the treated water output being located at a height above an upper surface of the sand in the sand containing section of the water treatment container, wherein water flows through the sand and through the bottom opening of the vertical chamber of the sand separator to enter the flowpath.