公开(公告)号：US20190263685A1

公开(公告)日：2019-08-29

申请号：US15905991

申请日：2018-02-27

Applicant: Chevron U.S.A. Inc.

Inventor： Nitesh BHUWANIA ,  Prakhar PRAKASH ,  Evan Shigeto HATAKEYAMA ,  Christopher MARCOTTE

IPC: C02F1/44 ,  B01D61/00

Abstract: Processes and systems form diluted brine from saturated brine without direct addition of soft or contaminated water in an oil and/or gas treatment facility. Water containing salt contaminants is fed to a forward osmosis membrane. The salt contaminants can be cations, anions, carbonate, bicarbonate and combinations thereof. A saturated brine solution is fed to a draw side of the forward osmosis membrane which allows water to pass from the feed side to the draw side and minimizes the passage of the salt contaminants from the feed side to the draw side. A diluted brine solution having a TDS concentration lower than a TDS concentration of the saturated brine solution is removed from the draw side outlet of the forward osmosis membrane. A concentrated contaminated water stream having a TDS concentration higher than a TDS concentration of the contaminated water feed is removed from the feed side outlet of the forward osmosis membrane.