Ozonation of cooling tower waters
OwnerRobert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch, Marshall F. Humphrey +2inventors
InventorsRobert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch, Marshall F. Humphrey, Kenneth R. French, Ronald D. Howe
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Abstract
Continuous ozone injection into water circulating between a cooling tower and heat exchanger with heavy scale deposits inhibits formation of further deposits, promotes flaking of existing deposits, inhibits chemical corrosion and controls algae and bacteria.
Claims6
A method of inhibiting formation of scale, corrosion and algae growth on the surfaces in contact with corrosive and scaling ion containing water circulating through a circuit including a heat exchanger and a cooling tower in which air containing algae forming micro-organisms is blown through water downwardly falling into a basin comprising the steps of:
- injecting ozone into the water in the basin at a level of at least 2 milligrams per liter in the absence of any other corrosion or scale inhibitor;
- and
- maintaining the ozone level in the water in the circuit at a level between 2 to 20 milligrams per liter.
Dependencies are inferred from the claim text.