METHOD AND SYSTEM FOR BACKWASHING A FILTER

摘要

A self backwashing filtering unit, including: a container, adapted to contain filtered liquid; a filter that filters unfiltered liquid at a first pressure to admit the filtered liquid into the container; a pump, adapted to receive filtered liquid, to receive unfiltered liquid and to provide pressurized filtered liquid at a second pressure that is higher than the first pressure; and a hydraulic rotating backwasher that is driven by the pressurized filtered liquid, adapted to backwash the filter by jetting the pressurized filtered liquid onto the filter.