Method for the physico-chemical treatment of effluents, in particular of surface water for consumption
US6210587A · kind A · utility
24Cited by
8References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 16, 1999 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Jul 16, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/5281
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is disclosed for the physico-chemical treatment of effluent, especially surface water intended for consumption, the process includes the successive steps of coagulation, flocculation and settling, wherein, during the flocculation step, a ballast is introduced into the sludge, the function of which ballast is to make the sludge heavier. The contacting mass used during this flocculation step consists of part of the densified sludge resulting from the settling step and continuously recycled in the flocculation step, without any treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.