Hollow-fiber filtering module and water purification device utilizing it
US4636307A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1984 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Sep 14, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/38
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A hollow-fiber filtering module includes a casing having an open end and an inlet for introducing water to be treated thereinto. A bundle of hollow fibers is mounted within the casing, each of the hollow fibers having an open end. A fastening member sealingly joins the open ends of the hollow fibers to the open end of the casing in sealing relation thereto, the open ends of the hollow fibers opening to the exterior of the casing. Part of the hollow fibers are made of a microporous membrane having a portion of a hydrophobic nature, and the other hollow fibers are hydrophilic microporous membranes. Gas introduced into the filtering module can easily permeate the hydrophobic portions of the hollow fibers and is discharged through the bores of the hollow fibers from their open ends together with the filtered water. There is also disclosed a water purification device employing such a hollow-fiber filtering module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.