Device and method for fluid aeration via gas forced through a liquid within an orifice of a pressure chamber
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United States of America Patent
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May 6, 2003
Grant Date -
Oct 24, 2002
app pub date -
May 20, 2002
filing date -
May 13, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides aeration methods using spherical gas bubbles having a size on the order of 0.1 to 100 microns in size. A device of the invention for producing a monodispersion of bubbles includes a source of a stream of gas which is forced through a liquid held under pressure in a pressure chamber with an exit opening therein. The stream of gas surrounded by the liquid in the pressure chamber flows out of an exit orifice of the chamber into a liquid thereby creating a monodispersion of bubbles with substantially uniform diameter. The bubbles are small in size and produced with a relatively small amount of energy relative to comparable systems. Applications of the aeration technology range from oxygenating sewage with monodispersions of bubbles to oxygenation of water for fish maintenance.
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