Water treatment
US4783265A · kind A · utility
23Cited by
12References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1986 |
| Grant date | Nov 8, 1988 |
| Priority date | — |
| Expiry date | Oct 29, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/54
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method of treating water comprises adding to the water a composition comprising a weighting agent and an electrolyte having a multivalent metal cation. The resultant floc absorbs suspended solids in the water and gives rise to a dense sludge which is easily removed from the purified supernatant liquor. A composition for use in the method is also disclosed. The composition may be in the form of a slurry or a friable solid (which may be briquetted).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.