Reverse osmosis treatment system for recovering energy generated both at brine and permeate sides during sea water desalination
US11395990B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2019 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | May 24, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided is a reverse osmosis treatment system capable of simultaneously and efficiently recovering energy generated both at brine and permeate sides. The system comprises a branched portion configured to divide second to-be-treated water into third and fourth to-be-treated water; a high-pressure pump configured to pressurize the third to-be-treated water thereby to feed fifth to-be-treated water having a higher pressure than the to-be-treated water before divided; a displacement type of first energy recovery device configured to exchange pressures between the fourth to-be-treated water and brine thus separated by a reverse osmosis treatment device, thereby to produce sixth to-be-treated water having a higher pressure than the fourth one; and a second energy recovery device configured to raise a pressure of the third to-be-treated water located at a downstream side of the branched portion with a pressure of first permeate thus separated by the reverse osmosis treatment device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.