Ozone water treatment method and apparatus
US5626769A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1994 |
| Grant date | May 6, 1997 |
| Priority date | — |
| Expiry date | Aug 4, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/447
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There are provided an ozone water treatment method by comprising the steps of injecting an ozone-containing gas into pure water to prepare ozone water, supplying the ozone water to use point(s) for treatment of materials to be treated, and circulating for reuse or discharging the ozone water after use, which comprises disposing a deozonizing apparatus, the inside of which is divided into an ozone water passing zone and a reduced pressure zone by a diaphragm, at the downstream side of the use point(s), supplying the ozone water after use to the ozone water passing zone of the deozonizing apparatus, and removing residual ozone and residual oxygen in the ozone water after use by contacting the water with the reduced pressure zone through the diaphragm and an apparatus utilized in the ozone treatment method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.