Sludge thickener apparatus and method
US4120791A · kind A · utility
9Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1977 |
| Grant date | Oct 17, 1978 |
| Priority date | — |
| Expiry date | Sep 28, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D21/245
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Thickening method and apparatus includes conventional settling vessel with moving rake and pickets at the bottom thereof to promote sludge settling and compression and a plurality of inclined passageways for upwardly flowing liquid. Upflowing liquid from the hindered settling feed is clarified in the inclined passageways from which a presettled semisolid mass flows downwardly into a detention zone of compressive thickening sludge. This interrelationship of inclined passageways and compressively thickening zone enhances the effectiveness of the thickening process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.