Method for the physico-chemical treatment of effluents in particular surface water for consumption
US6210588A · kind A · utility
21Cited by
11References
38Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1999 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Jul 22, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2305/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process for the physico-chemical treatment of effluent, especially of surface water intended for consumption, comprising the successive steps of coagulation, flocculation and settling, a contacting mass being introduced into the water coming from the coagulation step, and therefore during the flocculation step, and this contacting mass consisting of part of the densified sludge resulting from the settling step and recycled in the flocculation step, this process being characterized in that at least part of the polyelectrolyte ensuring flocculation is injected into a sludge-recirculation circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.