Water clarification/purification
US5171453A · kind A · utility
13Cited by
7References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 11, 1991 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Jul 11, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/5245
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Aqueous media, e.g., surface or waste waters, or industrial effluents, are clarified/purified, notably to markedly reduce the residual aluminum and organic solids contents thereof, by treating same, advantageously sequentially, with an effective impurity coagulating amount of at least one aluminum polymer and at least one ferric salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.