System and method for backwashing multiple filtration vessels
US5833867A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1995 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Dec 1, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D24/4689
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter media washing system for washing contaminants from filter media of a plurality of filtration vessels. Each filtration vessel has a filtration screen subdividing the filtration vessel into a filter media containing chamber and a filter media-free chamber. Each filter media containing chamber of each filtration vessel has a first fluid passage connected thereto and is located distally from the filtration screen. A second fluid passage is also positioned in each filter media containing chamber, but it is located proximate to the filtration screen. The first and second fluid passages are fluidly coupled, one to the other with a decontamination unit located fluidly therebetween for separating filter media from contamination carried therewith. The decontamination unit includes a contamination separating pump, a contamination separating chamber, a contamination separating screen and a return manifold. The return manifold has a first and second return conduit. The first return conduit is fluidly connected to the second fluid passage of the first filtration vessel and the second return conduit is fluidly connected to the second fluid passage of the second filtration vessel. The con…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.