Water filtration using immersed membranes
US7025885B2 · kind B2 · utility
57Cited by
38References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2004 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | Dec 8, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for operating filtering membranes submerged in a tank involves, in one aspect, periodically deconcentrating the tank by partially emptying and refilling the tank with fresh water. The emptying and refilling may be performed generally simultaneously or sequentially. In another embodiment, the membrane modules are arranged in a series of filtration zones between a feed water inlet and a retentate outlet of a tank and the zone adjacent the outlet is emptied and refilled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.