Method and apparatus for treating water containing organic sulfur compounds
US5529693A · kind A · utility
9Cited by
5References
6Claims
0Family size
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Key dates
| Filing date | Mar 21, 1995 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Mar 21, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F3/006
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method for treating water containing organic sulfur compounds comprises adjusting the pH value of the water in a pH adjustment tank, biologically treating the water in a biological treatment tank, adjusting the pH value of the water to be alkaline at any places in the biological treatment tank, maintaining the dissolved oxygen concentration of the water to 2 mg/L or higher at any places in the biological treatment tank, and supplying a part of the water to the pH adjustment tank for a further treatment. An apparatus for carrying out the above method is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.