Process for removal of suspended solids from liquid
US4162216A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 25, 1977 |
| Grant date | Jul 24, 1979 |
| Priority date | — |
| Expiry date | Oct 25, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D24/4673
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for removal of solids from a liquid containing suspended solids by flowing the liquid through a filter bed of discontinuous polyurethane particles in a filtration vessel. For renewal of the filter bed, deposited solids are removed from the discontinuous polyurethane particles by adding at least one bed volume of a regeneration liquid to the filter vessel and mechanically mixing the filter bed of polyurethane particles in a total volume of liquid comprising the regeneration liquid and the hold-up liquid in the filter bed resulting from the termination of liquid flow therethrough, thereby forming solids-enriched liquid, and discharging the solids-enriched liquid from the filtration vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.