Water purification method
US4264451A · kind A · utility
13Cited by
5References
13Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 26, 1979 |
| Grant date | Apr 28, 1981 |
| Priority date | — |
| Expiry date | Nov 26, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/283
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Hydrogen sulfide is effectively removed from potable water by the combined action of first chlorinating the water and then passing the chlorinated water through a bed of activated carbon. Chlorine is added in large doses to potable water containing dissolved hydrogen sulfide to convert substantially 90% of the hydrogen sulfide to sulfates. The chlorinated water containing residual hydrogen sulfide is then passed through a bed of activated carbon. Chemisorbed nascent oxygen in conjunction with the activated carbon catalytically affect breakdown of the remaining sulfide compounds into elemental sulfur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.