Method and apparatus for dissolved air flotation and related was

Details Method and apparatus for dissolved air flotation and related was Method and apparatus for dissolved air flotation and related was

1995-03-08

1996-07-23

Lithgow, Thomas M.

Liquid purification or separation

With means to add treating material

Directly applied to separator

210109, 2101951, 210320, 210521, 210703, C02F 124

Patent

active

055386318

ABSTRACT:
A dissolved air flotation (DAF) system and method for gas-liquid contacting operations. A mixture of untreated liquid and liquid saturated with dissolved air is passed through a series of upward deflecting screens placed across the flowpath in a rectangular tank. Microbubbles of air released from the mixture produce a buoyant force which carries contacted particles to the surface. Floated particles released from the microbubbles form a sludge which is supported above the surface of the mixture by a layer of air derived from the microbubbles. A top layer of the sludge is skimmed off according to a predetermined residence time of sludge at the surface. Liquid containing dissolved air is also introduced downstream of each deflecting screen to enhance flotation and clarification.

REFERENCES:
patent: 2920763 (1960-01-01), Lind
patent: 3063938 (1962-11-01), Katz
patent: 3175687 (1965-03-01), Jones
patent: 3182799 (1965-05-01), Krofta
patent: 3666112 (1972-05-01), Pielkenrood
patent: 3754656 (1973-08-01), Horiguchi
patent: 3797668 (1974-03-01), Pielkenrood
patent: 3831758 (1974-08-01), Watson
patent: 4216085 (1980-08-01), Chittenden
patent: 4257891 (1981-03-01), Albohn
patent: 4274959 (1981-06-01), Roediger
patent: 4470903 (1984-09-01), Van Leeuwen
patent: 4957628 (1990-09-01), Schulz
patent: 4957633 (1990-09-01), Suutarinen
patent: 5028333 (1991-07-01), Wright
patent: 5130029 (1992-07-01), Suutarinen
patent: 5268099 (1993-12-01), Krofta
patent: 5391306 (1995-02-01), Meurer

Affiliated with

Also associated with

Rating

Method and apparatus for dissolved air flotation and related was does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for dissolved air flotation and related was, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for dissolved air flotation and related was will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-710674