Apparatus and method for treating wastewater containing nitrogen-containing dyes
US7597808B2 · kind B2 · utility
5Cited by
8References
14Claims
0Family size
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Key dates
| Filing date | Jul 12, 2006 |
| Grant date | Oct 6, 2009 |
| Priority date | — |
| Expiry date | Jun 1, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/917
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A wastewater treatment apparatus comprises a nitrogen-containing dye containing wastewater inlet connected to an obligatory anaerobic tank to bring wastewater containing a nitrogen-containing dye into contact with sulfate-reducing bacteria under obligatory anaerobic conditions, a nitrification tank to bring the wastewater into contact with nitrifying bacteria under aerobic conditions, and a denitrification tank to bring the wastewater into contact with the denitrifying bacteria under anaerobic conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.