Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Material level or thickness responsive
Patent
1988-09-07
1990-06-05
Hruskoci, Peter
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Material level or thickness responsive
210 94, 210104, 2102212, 210520, 210521, 210525, 210530, 261231, 261122, C02F 124
Patent
active
049311751
ABSTRACT:
Water clarifying apparatus has a cylindrical tank where particulate contaminants suspended in raw water are separated using flotation techniques. A set of concentric mutually spaced, conical plates are positioned in the flotation tank. The plates rotate about the tank, preferably in unison with a (i) header that distributes equal quantities of raw water to each annular zone in the tank defined by the conical plates and (ii) a scoop for removing the contaminants which form a floated sludge layer. A screw conveyor is located in a discharge pipe of the floated sludge scoop. A infrared sludge detection array in a window in the side wall of the tank senses the sludge-water interface. Air dissolving tubes operating in parallel have common feeds and discharges coupled through three way valves operated to pressurize a closed volume of water with high pressure air in one tube while reloading and discharging the other tube.
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Hruskoci Peter
Lenox Institute for Research, Inc.
Upton Christoper
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