Water purification system
US6929740B2 · kind B2 · utility
18Cited by
9References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 14, 2003 |
| Grant date | Aug 16, 2005 |
| Priority date | — |
| Expiry date | May 6, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2209/008
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A water purification apparatus used to prevent the formation of scale around electrodes which form part of the apparatus. The apparatus comprises at least one electrode containing a proportion of an ion-emitting electrode such as copper, silver or a copper and silver alloy and at least one electrode containing a proportion of a non-emissive metal such as titanium. The electrodes are connected to a DC power supply which has switching means to reverse the polarity of the electrodes at predetermined intervals. The apparatus ensures accurate control of disinfection and minimal equipment maintenance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.