Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Patent
1997-03-03
1999-03-02
Drodge, Joseph W.
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
210106, 210107, 210393, 210408, 210780, 210791, B01D 3700, B01D 3348, B01D 3350
Patent
active
058766120
ABSTRACT:
The present invention is directed to a filter apparatus for filtering out suspended solids from liquid that is passed through filter material supported within a tank. The invention is also directed to a method of cleaning the filter material while the filter material remains inside the tank. The disclosed apparatus and method facilitates the removal of solids which are deposited on the filter material during the filtering operation, as well as biogrowth and other foreign matter. The cleaning method utilizes a suction generating device, such as a pump and associated suction heads, for backwashing the filter material. The cleaning method also utilizes a device for directing a liquid stream of a chemical cleaning solution at high velocity to the filter material thereby chemically washing the filter material and dislodging filtered solids and other foreign matter therefrom. The suction heads and the nozzle heads are positioned relative to the filter material such that substantially all of the runoff which results from operation of the liquid directing device is removed from the filter material by the suction heads.
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"Aqua Filter", Aqua-Aerobic Systems, Inc., Bulletin No. 100M, Jan., 1993.
Aqua-Aerobic Systems, Inc.
Drodge Joseph W.
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