Backwash method and apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 20, 1983
Grant Date -
N/A
app pub date -
May 3, 1982
filing date -
May 3, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The method and apparatus for filtering a liquid including a filter vessel divided into an upper filter compartment and a lower plenum compartment. An external vessel is positioned at or below the elevation of the tops of the filter element fittings in the plenum compartment. A pressurized gas is supplied to the upper portion of the external vessel forcing backwash liquid from the external vessel into the lower portion of the plenum compartment backwashing filter elements within the filter compartment.
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