Method for inhibiting growth of bacteria or sterilizing around separating membrane
US6468430B1 · kind B1 · utility
75Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2000 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Mar 20, 2020 |
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.