Pulsating sludge bed with inclined plates
US4156644A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 1977 |
| Grant date | May 29, 1979 |
| Priority date | — |
| Expiry date | Dec 2, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D21/2444
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a system for decantation treating of liquid containing therein suspended material, the liquid to be treated is pulsatingly introduced into the bottom of a sludge bed and pulsated therein. The liquid is passed upwardly through the sludge bed at a predetermined speed whereby the suspended material is agglomerated and removed from the liquid. The liquid is forced through the sludge bed from the bottom to the top thereof in paths which are inclined both to the horizontal and to the vertical. Specifically, the liquid passes generally upwardly through an assembly of inclined flow control devices which are positioned within the sludge bed throughout substantially the entire height thereof. Sludge settles within the inclined passageways between the flow control devices for a slight distance until the sludge contacts an inclined bottom wall. The sludge then slides downwardly in an inclined manner along the bottom wall in a concentrated path or current. This concentrated path or current forces the liquid upwardly and away from the bottom wall, thereby creating a generally upwardly moving inclined path or current of liquid. The settling sludge and rising liquid thereby form concentrated cu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.