Patent ID: 6984325

Claim:
Apparatus for treating a body or bodies of aqueous liquid, that comprises a) means providing molecular oxygen, b) means for introducing said molecular oxygen into said body or bodies of aqueous liquid to increase dissolved oxygen content of the liquid and to disperse said dissolved oxygen content widely in said liquid, c) whereby at least some of the dissolved oxygen content sinks in said body or bodies of liquid and is retained therein for treating said liquid or substance therein, d) said means including an enhanced venturi operating to recirculate liquid in said body or bodies at the same time that molecular oxygen is dispersed via the enhanced venturi into said body or bodies, e) there being: i) a flotation body housing received in said aqueous body, to float therein; ii) a pump in the housing, iii) said venturi supported within and extending substantially vertically within said housing, the venturi having a throat entrance for air received from a duct that extends upwardly to its inlet above the aqueous body surface, iv) the pump having a submerged inlet fed from said body, and an outlet to deliver pressurized aqueous liquid to the venturi inlet via a line; v) and an elongated nozzle coupled to a venturi outlet via a second duct configured to distribute sub-micron size oxygen bubbles from the venturi, for wide distribution in the water body via the nozzle which projects from the body.