Ozonation of contaminated liquids under high pressure
First Claim
Patent Images
1. A process of treating contaminated liquid by reaction with ozone in a pressurized reactor vessel, the method comprising:
- injecting ozone into a contaminated liquid to form a gas/liquid mixture;
injecting said mixture into a mixing chamber for providing turbulent gas/liquid contact; and
flowing said mixture from said mixing chamber into said pressurized reactor vessel, wherein a pressure of at least about 45 psig is maintained in said reactor vessel.
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Abstract
Contaminated liquids are treated by ozonation in a pressurized environment. Ozone is injected into a contaminated liquid to form a gas/liquid mixture. The mixture is injected into a mixing chamber for providing turbulent gas/liquid contact. The mixture is flowed from the mixing chamber into a pressurized reaction vessel. In an alternative embodiment, contaminated liquid is treated in situ using pressurized injection wells for injecting ozone-containing liquid.
66 Citations
27 Claims
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1. A process of treating contaminated liquid by reaction with ozone in a pressurized reactor vessel, the method comprising:
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injecting ozone into a contaminated liquid to form a gas/liquid mixture;
injecting said mixture into a mixing chamber for providing turbulent gas/liquid contact; and
flowing said mixture from said mixing chamber into said pressurized reactor vessel, wherein a pressure of at least about 45 psig is maintained in said reactor vessel.
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2. A process of treating contaminated liquid by reaction with ozone in a pressurized reactor vessel, the method comprising:
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injecting ozone into a contaminated liquid to form a gas/liquid mixture;
combining said gas/liquid mixture with recirculated headspace gas from said reactor vessel to form a reactive mixture having an air-to-liquid ratio of from about 0.25;
1 to about 10;
1;
injecting said reactive mixture into a mixing chamber for providing turbulent gas/liquid contact; and
flowing said reactive mixture from said mixing chamber into said pressurized reactor vessel, wherein a pressure of at least about 45 psig is maintained in said reactor vessel. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
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11. A process of treating contaminated liquid in situ by reaction with ozone in a pressurized environment, the method comprising:
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injecting influent liquid into a pressurized vessel;
injecting ozone into a recirculated stream from said vessel to form a gas/liquid mixture;
combining said gas/liquid mixture with recirculated headspace gas from said vessel to form a reactive mixture having an air-to-liquid ratio of from about 0.25;
1 to about 10;
1;
injecting said reactive mixture into a mixing chamber for providing turbulent gas/liquid contact;
flowing said reactive mixture from said mixing chamber into said vessel, wherein a pressure of at least about 45 psig is maintained in said vessel; and
injecting said reactive mixture into the ground. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An apparatus for treating contaminated liquid by reaction with ozone in a pressurized reactor vessel, the apparatus comprising:
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a conduit for feeding an influent liquid;
an ozone generator;
a first gas injector for injecting ozone into the influent liquid to form a gas/liquid mixture;
a second gas injector for injecting recirculated headspace gas from said reactor vessel into said gas/liquid mixture to form a reactive mixture;
a mixing chamber for providing turbulent mixing conditions for said reactive mixture; and
a generally enclosed reactor vessel for maintaining said reactive mixture in a pressurized environment. - View Dependent Claims (25, 26, 27)
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Specification