Method of sulfate removal from seawater using high salinity produced water
US12421142B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2022 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | May 13, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2305/00
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method of desulfating seawater includes adding a produced water to a sulfated seawater, forming a first precipitate, separating the first precipitate from the sulfated seawater, measuring the sulfate ion concentration of the desulfated seawater, adding a precipitating agent to the sulfated seawater, and separating a second precipitate from the sulfated seawater. Another method of desulfating seawater includes determining concentrations of sulfates in a sulfated seawater and a precipitating agent in a produced water, adding the produced water to the sulfated seawater based on the determined concentrations of sulfates in the sulfated seawater and the precipitating agent in the produced water, forming a first precipitate, separating the first precipitate from the sulfated seawater, measuring the sulfate ion concentration of the desulfated seawater, adding a precipitating agent to a sulfated seawater, and separating a second precipitate from the sulfated seawater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.