Effluent treatment process for sulphate removal
US10676381B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jul 22, 2016 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Mar 8, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/18
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Disclosed is an acid waste water treatment and method wherein heavy metal hydroxides and gypsum are precipitated in a single operation and wherein amorphous aluminium trihydroxide and gypsum are separated in a single solid-solid separation unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.