Method of bacteriostasis or disinfection for permselective membrane
US6743363B2 · kind B2 · utility
2Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2002 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | Oct 6, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2321/162
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In the invention, the pipe lines around permselective membranes and the surfaces of permselective membranes are intermittently disinfected by adding an inexpensive acid such as sulfuric acid or the like to pre-treated crude water so as to make the water have a pH of 4 or lower. Accordingly, the invention provides a method of surely disinfecting the permselective membranes in membrane separation systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.