Ozonation of pool water
AssigneeNeuman Pools, Inc.
InventorWolfram Hartwig
Life of this patent
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Abstract
A method for the treatment of pool water with ozone at concentrations less than previously employed. Ozonation, as described herein, provides several distinct advantages including but not limited to inactivation of Cryptosporidium and other water borne microorganisms, reduction of combined chlorine concentrations and oxidation of chloramines.
Claims21
A method of using ozone contact to meet CT-pool water values for Cryptosporidium microorganism, said method comprising:
- providing a pool filtration system with a total filtration flow volume and flow rate, said system including a contact vessel and a filter downstream therefrom;
- introducing ozone to said filtration flow volume prior to contact with said vessel, said ozone introduced at an average concentration of about 0.5 mg/L to about 1.2 mg/L of water volume;
- and
- controlling said flow rate through said vessel to contact said water volume for a time with said ozone concentration to provide said system a CT-value sufficient to inactivate said microorganism.
A method of reducing pool water combined chlorine concentrations below threshold levels, said method essentially without breakpoint chlorination and comprising:
- providing a pool filtration system with a total filtration flow volume, said system including a contact vessel and a filter downstream therefrom;
- diverting a partial volume of water from said filtration flow volume;
- introducing ozone to said partial filtration flow volume during pool operation prior to contact with said vessel, said water volume reduced to about 20% to about 99% of said filtration volume, and said ozone introduced at a concentration of about 0.5 mg/L to about 1.2 mg/L of reduced water volume;
- contacting said reduced water volume for a time with said ozone concentration;
- and
- recombining said contacted, reduced water volume with said filtration flow volume.
A method of oxidizing chloramines in pool water, said method comprising:
- providing a pool filtration system with a total filtration flow volume, said system including a contact vessel and a filter downstream therefrom;
- diverting a partial volume of water from said filtration flow volume;
- introducing ozone to said partial filtration flow volume prior to contact with said vessel, said water volume reduced to about 20% to about 99% of said filtration volume, and said ozone introduced at a concentration up to about the saturation point of ozone in said reduced water volume;
- contacting said reduced water volume for a time with said ozone concentration;
- and
- recombining said contacted, reduced water volume with said filtration flow volume.
A method of using ozone to inactivate pool water microorganisms, said method comprising:
- providing a pool filtration system with a total filtration flow volume, said system including a contact vessel and a filter downstream therefrom;
- diverting a partial volume of water from said filtration flow volume;
- introducing ozone to said partial filtration flow volume prior to contact with said vessel, said water volume reduced to about 20% to about 99% of said filtration volume, and said ozone introduced at a concentration up to about the saturation point of ozone in said reduced water volume;
- contacting said reduced water volume for a time with said ozone concentration;
- flocculating said microorganisms;
- and
- recombining said contacted, reduced water volume with said filtration flow volume.
Dependencies are inferred from the claim text.