Liquid purification or separation – With gas-liquid surface contact means
Patent
1994-06-09
1995-06-20
Wyse, Thomas
Liquid purification or separation
With gas-liquid surface contact means
261 92, C02F 308
Patent
active
054258740
ABSTRACT:
A media panel for a rotating biological treatment apparatus for treating waste water, the rotating biological treatment apparatus including a rotatable shaft having a longitudinal axis and a plurality of media panel assemblies stacked on the shaft and each including a hub mounted on the shaft and a plurality of media panels mounted on the hub, the media panel comprising a planar member having a first side and a second side, and the planar member being mountable on the hub to extend normal to the longitudinal axis of the shaft to form a portion of a generally disk-shaped media panel assembly extending normal to the longitudinal axis of the shaft; the first side of the planar member including at least one first set of alternating grooves and ridges, and the second side of the media panel including at least one second set of alternating grooves and ridges; the grooves and ridges of the first and second sets of alternating grooves and ridges each having a first radially inner portion, a second radially inner portion spaced apart from the first radially inner portion, and a radially outer portion between and spaced radially outwardly with respect to the first and second radially inner portions when the media panel is mounted on the hub.
REFERENCES:
patent: 4137172 (1979-01-01), Sato et al.
patent: 4268385 (1981-05-01), Yoshikawa
patent: 4431537 (1984-02-01), Hirota
patent: 4441452 (1984-04-01), Strain, Jr.
patent: 4468326 (1984-08-01), Kawert
patent: 4522714 (1985-06-01), Thissen
patent: 4532035 (1985-07-01), Fuchs et al.
patent: 4549962 (1985-10-01), Koelsch
patent: 4668387 (1987-05-01), Davie et al.
patent: 5256570 (1993-10-01), Clyde
Rex Biological Contactors: for proven, cost-effective options in secondary treatment; Bulletin No. 315-13A/5 (Jun., 1989).
Envirex Inc.
Wyse Thomas
LandOfFree
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