Reverse osmosis water purification systems
US5006234A · kind A · utility
30Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1990 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Mar 20, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D61/081
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A reverse osmosis water purification system has a feed water line and outlets for reject and product water. Instead of wasting the reject water by allowing it to flow to a drain, the reject water is returned to the water feed line downstream of the reverse osmosis system so that is can be used for other purposes. A section of the water feed line has a flow restrictor which estabishes a dynamic pressure drop. Feed water for the reverse osmosis system is taken off the feed line upstream of the restrictor and reject water is returned downstream of the restrictor, thereby reducing the water wastage due to the reverse osmosis process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.