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US 2017/0247270 A1Published application
Water treatment methods
AssigneeCrs Industrial Water Treatment Systems Pty Ltd
InventorsAharon ARAKEL, Grant MOLONEY, Michael STARK, Samantha THEOBALD
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Abstract
Disclosed herein is a method for treating shale gas produced water. The method comprises adding a magnesium containing pH raising agent to the produced water, whereby a precipitate comprising magnesium hydroxide is formed; adding a source of carbonate ions to the produced water, whereby a carbonate containing precipitate is formed; and removing the precipitate to provide a treated water.
Claims21
A method for treating shale gas produced water, comprising:
- adding a magnesium containing pH raising agent to the produced water, whereby a precipitate comprising magnesium hydroxide is formed;
- adding a source of carbonate ions to the produced water, whereby a carbonate containing precipitate is formed;
- and
- removing the precipitate to provide a treated water.
1 more element
A method for treating shale gas produced water, comprising:
- adding a sulphate mineral to the produced water, whereby a barium containing precipitate is formed;
- adding a magnesium containing pH raising agent to the produced water, whereby a precipitate comprising magnesium hydroxide is formed;
- adding a source of carbonate ions to the produced water, whereby a carbonate containing precipitate is formed;
- and
- removing the precipitate to provide a treated water.
2 more elements
18-19. (canceled)
Dependencies are inferred from the claim text.