Process for treating industrial wastewaters
US6787037B2 · kind B2 · utility
5Cited by
2References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 30, 2003 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Apr 6, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a process for treating industrial wastewaters, preferably wastewaters from the metal-processing industry, preferably suitable for treating the wastewater in such a manner that it can be recycled back to the production. In the process the wastewater passes through a sequence of treatment steps consisting of a chemical/physical flocculation/precipitation, a filter system, a biological wastewater purification stage and also a nanofiltration unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.