Patent ID: 6986506

Claim:
An apparatus for introducing a gas into a liquid comprising: a liquid feed line in fluid communication with a liquid supply, wherein said liquid supply provides a pressurized liquid flow therethrough; an internal nozzle attached to said liquid feed line, wherein said internal nozzle has an exit diameter smaller than a diameter of said liquid feed line, thus causing the liquid flowing therethrough to increase velocity and create a stream; a mixing chamber in fluid communication with a vent line proximate a termination of said internal nozzle; and an exit cylinder in fluid communication with said mixing chamber, said exit cylinder having an entrance face and an exit face, and channel through which the stream passes, said channel having a substantially constant diameter greater than the exit diameter of said internal nozzle, wherein the entrance face and the exit face of said exit cylinder are substantially perpendicular to the flow of liquid from said internal nozzel, and wherein a distance from an exit of said internal nozzle to the entrance face of said exit cylinder is greater that the exit cylinder diameter but less than the exit cylinder channel length.