Apparatus and method for dissolution of ozone in water and catalytic oxidation
First Claim
Patent Images
1. A method for treating water, the method comprising:
- (a) introducing water into a pre-treatment stream;
(b) generating a gas stream containing at least 3% ozone gas;
(c) introducing the gas stream into the pre-treatment stream at an injection point, resulting in a mixed-phase stream comprising ozone gas and water;
(d) passing the mixed-phase stream through a monolith having an inlet end and an outlet end and located downstream from the injection point, resulting in a reaction product;
(e) separating any undissolved gas in the reaction product from a liquid-phase portion of the reaction product; and
(f) diverting at least a portion of the liquid-phase portion of the reaction product to an effluent stream;
wherein the monolith comprises a unitary structure having walls that define parallel channels within the monolith that fill a cross-sectional area of the monolith, wherein gas-liquid flow through the monolith is laminar in nature, and wherein the channels extend through the length of the monolith from the inlet end to the outlet end.
1 Assignment
0 Petitions
Accused Products
Abstract
A system and method for oxidation treatment of water in which ozone gas is dissolved in water by passing a mixed gas-liquid stream through a monolith at an elevated pressure that is close to the preferred gas output pressure for an ozone generator. The monolith is preferably contained at least partially within a gas-liquid separator vessel. Advanced oxidation is optionally provided by injecting hydrogen peroxide and/or embedding a catalyst on the monolith. At least a portion of the treated water is preferably recycled in order to increase total ozone dosing in the effluent stream.
-
Citations
20 Claims
-
1. A method for treating water, the method comprising:
-
(a) introducing water into a pre-treatment stream; (b) generating a gas stream containing at least 3% ozone gas; (c) introducing the gas stream into the pre-treatment stream at an injection point, resulting in a mixed-phase stream comprising ozone gas and water; (d) passing the mixed-phase stream through a monolith having an inlet end and an outlet end and located downstream from the injection point, resulting in a reaction product; (e) separating any undissolved gas in the reaction product from a liquid-phase portion of the reaction product; and (f) diverting at least a portion of the liquid-phase portion of the reaction product to an effluent stream; wherein the monolith comprises a unitary structure having walls that define parallel channels within the monolith that fill a cross-sectional area of the monolith, wherein gas-liquid flow through the monolith is laminar in nature, and wherein the channels extend through the length of the monolith from the inlet end to the outlet end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A water treatment system comprising:
-
a water supply line; an ozone generator for generating an output gas stream containing ozone; an ozone supply line that is configured to carry the output gas stream from the ozone generator and to connect to the water supply line at an injection point; a monolith having an outlet end and an inlet end that is downstream from the injection point and is in flow communication with the water supply line; a vessel that is in flow communication with the outlet end of the monolith; a gas purge line located on the vessel; a vessel output line located on the vessel for extracting liquid from the vessel, the vessel output line being positioned below the gas purge line; and an effluent port located on the vessel output line; wherein the monolith comprises a unitary structure having walls that define parallel channels within the monolith that fill a cross-sectional area of the monolith, wherein gas-liquid flow through the monolith is laminar in nature, and wherein the channels extend through the length of the monolith from the inlet end to the outlet end. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification