Reduction of clay in sludges to be dewatered
US5104552A · kind A · utility
8Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1990 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Nov 8, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/54
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The dewatering of waste industrial and municipal sludges is improved by the use of clay employed with an unsheared, water-soluble, branched cationic polymer having a solubility quotient greater than about 30% and a branching agent content of from about 4-80 molar parts per million, based on initial monomer content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.