Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Patent
1994-06-28
1996-01-02
Drodge, Joseph W.
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
210 97, 2101951, 210196, 210804, 210805, C01D 3704
Patent
active
054805619
ABSTRACT:
An improved method and apparatus for treating wastewater in a recirculating filter is disclosed. Solids are removed from the wastewater by gravitational separation and the wastewater is flowed to a tank. At least a portion of the wastewater is flowed from the tank to a filter comprised of filter media and flowed through the media to produce a filtrate. The amount of wastewater in the tank is sensed. When the amount of wastewater sensed is at least a predetermined amount, a fraction, less than all but more than none, of the filtrate is returned to the tank. When the amount of wastewater is less than the predetermined amount, more than the fraction of filtrate is returned to the tank by decreasing resistance to flow of the filtrate to the tank. The apparatus includes a tank and a filter interconnected by a conduit for conducting liquid from the tank to the filter. A conduit assembly interconnects a filter outlet and a discharge conduit for conducting liquid from the filter to the discharge conduit. The conduit assembly includes a shunt conduit connected to the tank for shunting at least some liquid from the filter to the tank bypassing the discharge conduit by selectively varying resistance to flow of liquid in the shunt conduit.
REFERENCES:
patent: 2441813 (1948-05-01), Halvorson
patent: 2772235 (1956-11-01), Bookout et al.
patent: 3713543 (1973-01-01), Heaney
patent: 4689153 (1987-08-01), Follmann et al.
patent: 4784771 (1988-11-01), Wathen et al.
patent: 4818384 (1989-04-01), Mayer
patent: 5269911 (1993-12-01), Stegall, Sr. et al.
patent: 5282972 (1994-02-01), Hanna et al.
Ball Eric S.
Ball Harold L.
Ball Jeffrey L.
Bounds Terry R.
Drodge Joseph W.
Jones Kenneth M.
Orenco Systems, Inc.
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