Method for sulfide toxicity reduction
US4614588A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 22, 1985 |
| Grant date | Sep 30, 1986 |
| Priority date | — |
| Expiry date | Aug 22, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E50/30
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A method and system for reducing the sulfur concentration of wastewater which is to be disposed of through anaerobic treatment. Wastewater high in sulfur content is fed to a reactor having a pH level less than 6, such that the sulfate and/or sulfite compounds in the wastewater are converted by sulfate reducing bacteria into sulfide gas, thereafter exhausting the sulfide gas from the reactor. It is preferred that two anaerobic reactors be connected in series, such that the first reactor contains sulfate reduce bacteria and/or acid-forming bacteria, and the second reactor contains methane-forming bacteria and/or acid-forming bacteria.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.