Liquid purification or separation – Recirculation – From bottom of separator
Patent
1974-09-20
1976-01-20
Hart, Charles N.
Liquid purification or separation
Recirculation
From bottom of separator
210219, 210220, 210256, 210320, 261 91, 209170, C02C 102, C02B 308
Patent
active
039336409
ABSTRACT:
Methods and apparatus for treating wastewater, such as municipal sewage, are provided in which an oxygen enriched feed gas is supplied to an oxygenation chamber wherein oxygen is efficiently dissolved in wastewater (mixed liquor) by means of a static mixing device. The chamber is preferably submerged in a large body of wastewater being treated, such as is commonly found in the secondary stage of an activated sludge wastewater treatment system with the chamber being adapted to receive such wastewater from a location slightly below the surface thereof. Oxygenated wastewater is discharged from the chamber in either a radial or multi-directional pattern at a sufficient velocity to effect a thorough mixing of the oxygenated wastewater and the large body of wastewater contained in the secondary stage treatment tank. The overall concentration of dissolved oxygen in the wastewater is maintained throughout the tank to a level sufficient to sustain microbial digestion of organic waste while providing the requisite stirring necessary to preclude settling of solids from the wastewater.
REFERENCES:
patent: 1732893 (1929-10-01), Hunt
patent: 2638444 (1953-05-01), Kappe
patent: 3133017 (1964-05-01), Lambeth
patent: 3220706 (1965-11-01), Valdespino
patent: 3503593 (1970-03-01), Nelson
patent: 3547811 (1970-12-01), McWhirter
patent: 3643403 (1972-02-01), Speece
patent: 3713274 (1973-01-01), Sauer et al.
patent: 3725258 (1973-04-01), Spector et al.
patent: 3775307 (1973-11-01), McWhirter et al.
patent: 3794303 (1974-02-01), Hirshon
Chappel Raymond M.
Kirk Bradley S.
Airco, Inc.
Bopp Edmund W.
Hart Charles N.
Mathews H. Hume
Rae David L.
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