Reverse osmosis desalinization utilizing plural flow work exchange vessels
US4354939A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 1981 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Feb 13, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/131
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of desalinating solutions by reverse osmosis into a salt-poor permeate and a salt-rich concentrate is disclosed. The method includes the steps of supplying solution to a reverse osmosis unit, supplying concentrate leaving the reverse osmosis unit to a treatment container or containers while simultaneously withdrawing a predetermined amount of solution. Some of the solution is also supplied to another space of one of the containers so that practically pressure-less concentrate is conveyed to the environment. The sequence of steps can be reversed in which the containers are supplied so that concentrate collected in the space of the container not being supplied with solution is available for being conveyed to the environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.