Process for conditioning and dewatering sludges
US5037559A · kind A · utility
13Cited by
9References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1989 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | Dec 28, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/5209
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
During conditioning of a suspension to be dewatered through incorporation of flocculant, the optimum dewaterability depends on the amount of added flocculant and on the mixing energy expended. According to the invention, the sludge flocs present or formed in the suspension after incorporation of the flocculant are determined metrologically, and the amount of flocculant and/or the mixing energy expended and/or the location of flocculant addition is controlled as a function of the floc number, size and/or structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.