# US 7,407,592 B2 · Ozone retention method and system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,407,592 B2 - Document ID: US7407592B2 - Status: Granted - Kind: B2 - Application number: 11/230,571 - Filed: 2005-09-21 - Published: 2006-02-02 - Granted: 2008-08-05 - Earliest claimed: 2002-04-17 - Assignees: Nutech 03, Inc. - Inventors: Johannes van Leeuwen; Michael D. Jennings; Richard A. Mueller; Jack H. Robinson - Web page: https://patentgrep.com/patent/US7407592B2 ## CPC - B63B 13/00: Conduits for emptying or ballasting; Self-bailing equipment; Scuppers (draining means for hatches B63B19/26; centrifugal bilge-water separators B04; {arrangements of installations for treating ballast water B63J4/002; } pipes in general F16L) - B63J 4/002: {for treating ballast water} - C01B 13/10: Preparation of ozone - C02F 1/766: {by means of halogens other than chlorine or of halogenated compounds containing halogen other than chlorine} - C02F 1/78: with ozone {(C02F1/4672 takes precedence)} - C02F 2103/008: {Originating from marine vessels, ships and boats, e.g. bilge water or ballast water} - C02F 2201/782: Ozone generators - C02F 2209/005: Processes using a programmable logic controller [PLC] - C02F 2209/40: Liquid flow rate - C02F 2301/046: Recirculation with an external loop - Y10S 210/931: Zebra mussel mitigation or treatment - B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06) - B63J: AUXILIARIES ON VESSELS - C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C} - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A method and system of ozone treatment diverts a portion of water from a flow of water in a conduit, injects ozone into the portion to provide an ozonated portion, and recombines the ozonated portion with the flow of water in the conduit. Another method and system identifies a species-destructive reaction product of ozone with a water constituent, determines a life of the reaction product, and contacts ozone with a water containing the species for a period determined according to the determined life of the reaction product. ## Claims ### Claim 1 A method of ozone treatment, comprising: identifying a species-destructive reaction product of ozone with a water constituent; determining a life of the reaction product; and contacting ozone with a water containing the species for a period determined according to the determined life of the reaction product. ### Claim 2 (depends on 1) The method of claim 1, wherein the water is seawater and the species destructive reaction product is OBr−. ### Claim 3 (depends on 1) The method of claim 1, wherein the water is seawater and the species destructive reaction product is OBr− and further wherein the ozone is contacted with seawater for a period controlled to maintain a molar ratio of B− to OBr− well above 2.7. ### Claim 4 (depends on 1) The method of claim 1, wherein the contacting period is controlled for a period specified below a limit according to the determined life of the reaction product. ### Claim 5 (depends on 1) The method of claim 1, wherein the period is less than 5 seconds. ### Claim 6 (depends on 1) The method of claim 1, wherein the period is less than 0.25 second. ### Claim 7 (depends on 1) The method of claim 1, wherein the period is less than 0.21 second. ### Claim 8 A method of ozone treatment, comprising: diverting a portion of water charging into a ballast tank of a vessel; injecting ozone into the portion to provide an ozonated portion; and recombining the ozonated portion with the water charging into the ballast tank; wherein the water is seawater containing bromine that reacts with ozone to provide an OBr− reaction product, and a retention period between injecting the ozone into the portion and recombining the injected ozone portion with the water charging into the tank is controlled below a specified time limit such that the ozone is contacted with the seawater for a period controlled to maintain a molar ratio of Br− to OBr− above 2.7. ### Claim 9 (depends on 8) The method of claim 8, wherein the retention period is limited by controlling bypass fluid flow velocity. ### Claim 10 (depends on 8) The method of claim 8, wherein the retention period is limited by bypass pipe length. ### Claim 11 (depends on 8) The method of claim 8, wherein the retention period is controlled for a period specified below a limit according to the determined life of a reaction product. ### Claim 12 (depends on 8) The method of claim 8, wherein the retention period is controlled for a period specified below a limit according to the determined life of a reaction product by establishing a length between a point of ozone injection and a point of recombining the injected portion with the water charging to the ballast tank. ### Claim 13 (depends on 8) The method of claim 8, wherein the retention period is controlled for the period by controlling a rate of flow of the diverted portion. ### Claim 14 A method of ozone treatment, comprising: diverting a portion of water charging into a ballast tank of a vessel; injecting ozone into the portion to provide an ozonated portion; and recombining the ozonated portion with the water charging into the ballast tank; wherein a retention period between injecting the ozone into the portion and recombining the injected ozone portion with the water charging into the tank is controlled below a specified time limit of 5 seconds. ### Claim 15 (depends on 14) The method of claim 14 wherein the retention period is less than 0.25 second. ### Claim 16 (depends on 14) The method of claim 14 wherein the retention period is less than 0.21 second.