METHODS FOR RECLAIMING PRODUCED WATER

摘要

A method for treating produced water from a fraccing source is disclosed. The method first mixes nitrogen and produced water and feeds the mixture to a forward osmosis unit containing a semi-permeable membrane; carbon dioxide gas is then fed to the forward osmosis unit, therein creating a pressurized nitrogen side and a pressurized carbon dioxide side of the forward osmosis unit; concentrated produced water is recovered from the pressurized nitrogen side of the forward osmosis unit and fresh water is recovered from the pressurized carbon dioxide side of the forward osmosis unit.