Treatment of phosphate-containing wastewater
US10196289B2 · kind B2 · utility
1Cited by
11References
19Claims
0Family size
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Key dates
| Filing date | May 18, 2011 |
| Grant date | Feb 5, 2019 |
| Priority date | — |
| Expiry date | Dec 1, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for treating, and recovering phosphate compounds from, phosphate-containing wastewater. The method includes the steps of: (a) removing fluoride from the wastewater; (b) recovering a phosphate compound from the wastewater by maintaining super saturation conditions for the phosphate compound; and (c) polishing the wastewater. A silica removal step may be optionally performed after step (a) and before step (b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.