SALILA ENVIROTECH
Rapid Sand Filter

Rapid Sand Filter

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Rapid Sand Filter

Rapid sand filtration is contrasted to slow sand filtration by increased flow rate, method of cleaning the filter bed. A rapid sand filter can operate up to 40 times faster than a slow sand filter. Rapid sand filters are cleaned often, usually daily, by reversing the flow of water through the entire filter bed, referred to as backwashing. Slow sand filters are cleaned less frequently by removal of the top layer of media.