Method of reducing hydrogen sulfide odor emissions from an aqueous medium
US6666975B1 · kind B1 · utility
14Cited by
14References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2002 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Oct 4, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/02
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present invention is directed to a fast-acting, aqueous phase chemical treatment for reducing the emission of hydrogen sulfide odor from an aqueous medium, e.g., a wastewater or pulping and paper making medium, to the vapor phase. This invention comprises adding an effective amount for the purpose of glyoxal to the desired hydrogen sulfide-containing medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.