Rapid flotation device for water laden with suspended matter, and method for implementing same
US9725334B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2012 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Aug 17, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2201/002
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a rapid flotation device, in particular using dissolved air, for treating water laden with suspended matter (MES). The device comprises a mixing area (B) separated from a flotation area (C) by a wall (n) above which the liquid to be treated passes from the mixing area. The bottom portion of the flotation area comprises: a perforated floor (1) located above an apron (R), a floated-water discharge being provided under the floor and leading to an outlet system (3); and at least two separate channels (2) which are oriented in the direction of flow of the water and are provided under the floor (1), and under optional structures (w) extending from the floor, to a point upstream of the outlet system (3). The downstream end (2.1) of the channels is open and located above the floor level, and a discharge means (V) is provided, for each channel, at the end of the downstream bottom portion of said channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.