Water purification apparatus
US4680114A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 1, 1985 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Feb 1, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/22
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Apparatus which is adapted to purify water by the introduction of metal ions into the water. A chamber (16) is provided which houses two electrodes (E1 & E.sub.2) which are made of metals whose ions are known to have water-purification properties. Water to be purified is passed through the chamber, whereupon a controlled concentration of purifying ions are passed into the water. The metal ions preferably include silver and/or copper to control respectively bacteria and algae. Furthermore, in order to minimize adverse electrolytic effects it has been found advantageous to reverse the polarity of the potential difference across the electrodes at regular intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.