Method and apparatus having reverse osmosis membrane for concentrating solution
US5238574A · kind A · utility
77Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1991 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Jun 24, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/131
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and an apparatus for treating salt water by a multiplicity of reverse osmosis membrane modules or a structure constituted by combining a multiplicity of reverse osmosis membrane modules and an evaporating device and thereby capable of efficiently treating it while preventing excessively large energy consumption. Salt water is passed through a plurality of reverse osmosis membrane modules so as to be separated into desalted water of a potable water level and high density concentrated water the salinity quality of which is 80,000 to 120,000 ppm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.