Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Material level or thickness responsive
Patent
1990-05-17
1992-01-07
Silverman, Stanley S.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Material level or thickness responsive
210 94, 210521, 210744, 210745, B01D 2132
Patent
active
050788612
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 decrease 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 (1) a screw conveyor located in a discharge pipe of the floated sludge scoop, (2) an infrared sludge detection array operating in conjunction with a window in the side wall of the tank to sense the sludge-water interface and the turbidity of the water below the interface, and in response thereto, to coordinate and control the operation of the apparatus, and (3) air dissolving tubes operating in parallel that 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. Where a sandbed filter is used at the bottom of the tank, the apparatus also includes clarified water extraction pipes imbedded in the sand and a steam backwashing system.
REFERENCES:
patent: 855243 (1907-05-01), Green et al.
patent: 1020013 (1912-03-01), Arbuckle et al.
patent: 2431936 (1947-12-01), Hudson
patent: 2874842 (1959-02-01), Krofta
patent: 3067878 (1962-12-01), Genter et al.
patent: 3452869 (1969-07-01), O'Neill
patent: 3626345 (1986-12-01), Krofta
patent: 4022696 (1977-05-01), Krofta
patent: 4184967 (1980-01-01), Krofta
patent: 4377485 (1983-03-01), Krofta
patent: 4500793 (1985-02-01), Kuramoto
patent: 4790944 (1988-12-01), Gordon et al.
patent: 4931175 (1990-06-01), Krofta
patent: 5182799 (1965-05-01), Krofta
Lenox Institute for Research, Inc.
Silverman Stanley S.
Upton Christopher
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