Hydrofluoric acid wastewater treatment method and device
US7311799B2 · kind B2 · utility
0Cited by
4References
11Claims
0Family size
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Key dates
| Filing date | Nov 26, 2003 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Sep 24, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/346
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention provides a hydrofluoric acid wastewater treatment method that achieves efficient recovery of hydrofluoric acid from hydrofluoric acid wastewater and also achieves sufficient reduction in the hydrofluoric acid concentration of the dehydrofluorinated water after treatment.The hydrofluoric acid wastewater treatment method comprises the following steps:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.