Method for chemically treating a liquid medium loaded with nitrates, device for treating a liquid medium of this type and applications
US7892439B2 · kind B2 · utility
4Cited by
5References
41Claims
0Family size
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Key dates
| Filing date | Oct 7, 2004 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Mar 3, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2209/06
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The invention relates to a method for chemically treating a liquid medium loaded with nitrates, primarily comprising a step in which zinc is brought into contact with said liquid medium whose pH is preferably less than 4. When this contacting step leads to the presence of residual zinc in the liquid medium, the liquid medium is circulated through at least one electrolytic cell. The invention also relates to a device for treating a liquid medium loaded with nitrates, to applications of this method, and to a device for reducing the proportion of nitrates in ground water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.