Treatment of water to extend half-life of ozone
A system for providing an acidic ionized ozonated liquid. The system includes a liquid inlet arranged to accept a liquid into the system; an acid-based cation-exchange resin in fluid communication with the liquid inlet, the resin adapted to exchange cations in the accepted liquid with H+ ions on the resin; an ozone dissolving apparatus in fluid communication with the liquid inlet and the acid-based cation-exchange resin; and a liquid outlet in fluid communication with the liquid inlet, the acid-based cation-exchange resin and the ozone dissolving apparatus. The ozone dissolving apparatus and the acid-based cation-exchange resin cooperating to produce the acidic ionized ozonated liquid for dispensation out of the system via the liquid outlet.
1. A system for increasing the average life span of ozone dissolved in a liquid, the system comprising:
a liquid inlet arranged to accept a liquid into the system;
an acid-based cation-exchange resin in fluid communication with the liquid inlet, the resin adapted to exchange cations in the accepted liquid with H+ions on the resin to treat the liquid;
an ozone dissolving apparatus in fluid communication with the liquid inlet and the acid-based cation-exchange resin; and
a liquid outlet in fluid communication with the liquid inlet, the acid-based cation- exchange resin and the ozone dissolving apparatus, the ozone dissolving apparatus and the acid-based cation-exchange resin cooperating to increase the average life span of the ozone dissolved in the liquid in comparison to an untreated liquid at the same pH and to produce an acidic ionized ozonated liquid for dispensing out of the system via the liquid outlet.
2. The system according to claim 1 wherein the ozone in the dispensed ozonated liquid has an average life span which is:
greater than the average life span of ozone in liquid which is not treated with the acid-based cation-exchange resin and is treated with sufficient liquid acid to produce a pH equal to the pH of the dispensed acidic ionized ozonated liquid; and
greater than the average life span of ozone in a deionized liquid which is treated with sufficient liquid acid to produce a pH equal to the pH of the dispensed acidic ionized ozonated liquid.
3. The system according to claim 1 wherein the ozone dissolving apparatus is an ozonating flow path which comprises:
an ozone generator to produce ozone for mixing with the accepted liquid.
4. The system according to claim 3 , wherein the ozonating flow path further comprises a mixer, in fluid communication with the ozone generator, to mix the generated ozone and the accepted liquid to produce the ozonated liquid.
5. The system according to claim 1 wherein the system further comprises a holding tank and wherein the acid-based cation-exchange resin is located in a recirculating flow path that is adapted to recirculate liquid to the holding tank.
6. The system according to claim 1 wherein the system further comprises a holding tank and wherein the acid-based cation-exchange resin is located in the holding tank.
7. The system according to claim 1 wherein the acid-based cation-exchange resin is located in a non-recirculating flow path.
8. The system according to claim 7 wherein the system further comprises a holding tank and the non-recirculating flow path provides liquid to the holding tank.
9. The system according to claim 7 wherein the non-recirculating flow path provides liquid to the ozone dissolving apparatus.
10. The system according to claim 1 wherein the acid-based cation-exchange resin accepts liquid from the liquid inlet and the ozone dissolving apparatus accepts liquid treated by the resin.
11. The system according to claim 1 wherein the ozone dissolving apparatus accepts liquid from the liquid inlet and the acid-based cation-exchange resin accepts the ozonated liquid.
12. The system according to claim 1 wherein the acid-based cation-exchange resin is a strong acid resin.
13. The system according to claim 1 wherein the acid-based cation-exchange resin is a weak acid resin.
14. The system according to claim 1 , wherein the cations in the accepted liquid are present in the liquid when the liquid is accepted by the ozonation system, or are added to the liquid by the ozonation system.
15. A method of increasing the average life span of ozone dissolved in a liquid, the method comprising:
receiving a liquid;
exchanging cations present in the liquid with H+ions from an acid-based cation-exchange resin to treat the liquid; and
ozonating the liquid by mixing ozone with the liquid;
wherein exchanging the cations and ozonating the liquid together increase the average life span of the ozone dissolved in the liquid in comparison to an untreated liquid at the same pH and produce an acidic ionized ozonated liquid.
16. The method according to claim 15 wherein the cations are exchanged to produce an acidic ionized liquid, and the acidic ionize liquid is ozonated after the cations are exchanged.
17. The method according to claim 15 wherein the received liquid is ozonated before the cations are exchanged.
18. The method according to claim 15 wherein the ozone in the ozonated liquid has an average life span which is:
greater than the average life span of ozone in liquid which is not treated with the acid-based cation-exchange resin and is treated with sufficient liquid acid to produce a pH equal to the pH of the acidic ionized ozonated liquid; and
greater than the average life span of ozone in a deionized liquid which is treated with sufficient liquid acid to produce a pH equal to the pH of the acidic ionized ozonated liquid.
19. The method according to claim 15 , further comprising adding cations to the received liquid before the cations are exchanged.
20. The system according to any one of claims 1 to 14 , wherein the ozone dissolving apparatus is an ozonating flow path which comprises an electrolytic ozone generator to produce ozone for mixing with the accepted liquid, and wherein the electrolytic ozone generator is adapted to perform electrolytic treatment of the cation exchange resin-treated liquid only.
21. The method according to any one of claims 15 to 19 , wherein ozonating the liquid comprises generating ozone using an electrolytic ozone generator adapted to perform electrolytic treatment of the cation-exchange resin-treated liquid only.
22. The system according to any one of claims 1 to 14 , wherein the ozone dissolving apparatus is an ozonating flow path which comprises a discharge-type ozone gas generator to produce ozone for mixing with the accepted liquid.
23. The system according to claim 22 , wherein the discharge-type ozone gas generator is a corona-discharge ozone gas generator.
24. The method according to any one of claims 15 to 19 , wherein ozonating the liquid comprises generating ozone using a discharge-type ozone generator.
25. The method according to claim 24 , wherein the discharge-type ozone gas generator is a corona-discharge ozone gas generator.