Liquid purification or separation – Flow – fluid pressure or material level – responsive – Diverse sensing means
Patent
1991-09-06
1993-02-23
Bascomb, Jr., Wilbur
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Diverse sensing means
2102212, 210525, 210540, C02F 124
Patent
active
051887290
ABSTRACT:
Water clarifying apparatus has a cylindrical tank where particulate contaminants suspended in raw water are separated using flotation techniques. The treatment capacity of such a unit is increased several times, with no increase in the size of the tank, by using a set of concentric, mutually spaced, conical plates positioned in the flotation tank. The increase is proportional to the combined area of the plates when projected onto a horizontal plane, the overlap of the projection producing an area which is greater than that of the horizontal plane without plates. 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. To accommodate this increased clarification capacity the clarifying apparatus also includes a screw conveyor located in a discharge pipe of the floated sludge scoop, which rotates at a greater speed than and in the opposite direction of the scoop.
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Bascomb, Jr. Wilbur
Lenox Institute for Research, Inc.
Upton Chirstopher
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