Method for treating aqueous effluent
US10889512B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2016 |
| Grant date | Jan 12, 2021 |
| Priority date | — |
| Expiry date | May 21, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention concerns the treatment of mine tailings in the form of aqueous effluents comprising solid particles. With the method of the invention it is possible to separate all or part of the water from an aqueous effluent comprising solid particles. This method comprises (a) adding at least one sulfonated dispersing agent to the effluent, then (b) adding at least one agent to flocculate the solid particles.The invention also relates to a composition comprising an aqueous effluent comprising dispersed, flocculated solid particles. Preferably it relates to a composition comprising an aqueous effluent comprising solid particles, at least one sulfonated dispersing agent and at least one agent to flocculate solid particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.