Tubular membrane separation process and apparatus therefor
US4198293A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 6, 1978 |
| Grant date | Apr 15, 1980 |
| Priority date | — |
| Expiry date | Mar 6, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2317/027
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A tubular membrane separation apparatus and process, for reverse osmosis or ultrafiltration, with an arrangement for removing undesirable deposit from semipermeable membrane surfaces. The apparatus is of the multiple-stage type wherein the number of tubular modules per stage gradually decreases in a pattern like a Christmas tree laid on its side. Elastic elements are forced through the tubular modules lined with the semipermeable membrane, the number of the elements being gradually decreased stage by stage, so that the deposit is mechanically rubbed off from the membrane surfaces with an optimum number of elastic elements for each stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.