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Apparatus and method of purifying water with ozone

  • US 6,673,248 B2
  • Filed: 08/02/2002
  • Issued: 01/06/2004
  • Est. Priority Date: 02/02/2000
  • Status: Expired due to Fees
First Claim
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1. A method for purifying a flow of water in a water flow line by use of an apparatus comprising(a) means for providing a flow of an ozone-containing gas;

  • (b) means for introducing the flow of the ozone-containing gas into the flow of water;

    (c) a mixing chamber for turbulent mixing of the ozone-containing gas with the flow of water, located on the water flow line in the vicinity of (d) an outlet for the flow of water; and

    (e) electronic control means adapted to control the operation of said apparatus, thereby providing a flow of water which on exiting through the outlet for the water flow is essentially free from residual ozone and from contamination by Legionella bacteria wherein the ozone-containing gas is introduced into the flow of water so as to maintain (i) a concentration of ozone in the water within the mixing chamber of about 0.01-0.5 mg/l; and

    (ii) a contact time between the ozone-containing gas and the water that is essentially equal to the time of continuous flow of the water flow from a water inlet of the mixing chamber to the outlet for the water.

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