Methods for reducing boron concentration in high salinity liquid
US7442309B2 · kind B2 · utility
10Cited by
18References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2003 |
| Grant date | Oct 28, 2008 |
| Priority date | — |
| Expiry date | Dec 17, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/131
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods of treating a high salinity liquid, such as seawater, containing boron are provided, including adjusting the pH of the liquid to about 8 to about 9.5, optionally adding a scale inhibitor to the liquid, passing the liquid through a reverse osmosis device, and recovering a permeate having a boron concentration less than about 2 ppm. One embodiment includes removing colloidal matter from the liquid using a membrane filtration system, such as ultrafiltration or microfiltration, prior to passing the liquid through the reverse osmosis device, and preferably prior to adjusting the pH of the liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.