Gas distributor for small-bubble aeration of water

Details Gas distributor for small-bubble aeration of water Gas distributor for small-bubble aeration of water

1993-05-12

1994-10-04

Miles, Tim

Gas and liquid contact apparatus

Contact devices

Liquid tank

160380, 160402, B01F 304

Patent

active

053523911

ABSTRACT:
The gas distributor is provided for aeration of water, particularly for the supply of oxygen in biological waste water treatment plants, but also for aeration of lakes whose oxygen content has been decreased due to the supply of pollutants. The gas distributor includes a base plate (2), over which a diaphragm (3) with fine openings (16) is stretched. Air, oxygen or other gases with such a volume per time unit are pumped between the base plate and the diaphragm (3) so that the diaphragm (3) expands slightly. Excessive expansion of the diaphragm is prevented by an upper grating part that extends over the total diaphragm (3). The diaphragm (3) is connected to the base plate (2) via a fastening device made of three members (6-8) that engage, for example, a recess (11) that has a dovetail-shaped cross-section. The diaphragms (3) are clamped to the base plate by means of a snap closure. The present embodiment uses no adhesive that could damage the diaphragm (3). Moreover, the finished gas distributor plates are delivered ready to operate to the point of use and assembly, exchange and maintenance can be greatly simplified or sped up in comparison to conventional designs.

REFERENCES:
patent: 2629432 (1953-02-01), Hanslick
patent: 3058518 (1962-10-01), Housman
patent: 3529653 (1970-09-01), Fey, Jr.
patent: 4189880 (1980-02-01), Ballin
patent: 4232310 (1980-11-01), Wilson
patent: 4234035 (1980-11-01), Babbs
patent: 4485574 (1984-12-01), Bennetot
patent: 4624781 (1986-11-01), Messner
patent: 4723367 (1988-02-01), Samoilov et al.
patent: 4842732 (1989-06-01), Tharp
patent: 5009050 (1991-04-01), Gruber
patent: 5015034 (1991-05-01), Kendig et al.
patent: 5015421 (1991-05-01), Messner

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