Process for removing hydrogen sulfide from waste water
US4853002A · kind A · utility
8Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1988 |
| Grant date | Aug 1, 1989 |
| Priority date | — |
| Expiry date | Apr 15, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/66
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Hydrogen sulfide is removed form a water stream comprising hydrogen sulfide and a high concentration of a Group IIA metal component such as magnesium and calcium components by maintaining the water stream at a specific acidic pH range and a specified temperature, and subjecting the resulting acidified hot water stream to vacuum flashing, in the absence of a stripping gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.