Method of treating water
US5352369A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1993 |
| Grant date | Oct 4, 1994 |
| Priority date | — |
| Expiry date | Apr 1, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/42
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method of treating water to kill bacteria therein includes exposing the water to a silver catalyst in the presence of oxygen to form an active oxidizer in the water. The silver catalyst includes elemental silver deposited on a high surface area alumina matrix. In one form of the method the active oxidizer formed is predominantly hydrogen peroxide, whereas in a second form of the method an oxidizable salt is added to the water so that the active oxidizer formed is predominantly oxidized ions of the salt. The method can be effectively carried out by adding oxygen in the form of O.sub.2 ozone to the water prior to exposing it to the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.