Removal of dissolved oxygen from water

Claim 1

The method of claim 1 wherein said transition metal is added in ionic form.

Claim 5

A method of treating water which contains oxygen dissolved therein to retard the corrosion of metal in contact with said water, comprising: a. adding sufficient hydrogen sulfide to said water to provide at least a stoichiometric amount of hydrogen sulfide; and b. adding a transition metal to said water in an amount of at least 0.0025 p.p.m. whereby the reaction between said hydrogen sulfide and said oxygen is catalyzed thereby removing said dissolved oxygen from said water.

Claim 7

A method of treating water which is free of added sulfite ions, said water containing hydrogen sulfide and oxygen dissolved therein, to retard the corrosion of metal in contact with said water, comprising adding to said water a transition metal in an amount of at least 0.0025 p.p.m. whereby said transition metal catalyzes the reaction between said hydrogen sulfide and said oxygen thereby removing said oxygen from said water.

Claim 10

A method of treating water to be injected through metal conduits into a well provided in the earth, said water containing hydrogen sulfide and oxygen dissolved therein, comprising: a. adding to said water at the surface a transition metal in an amount of at least 0.0025 p.p.m.; b. maintaining said water at the surface for a sufficient time for said dissolved hydrogen sulfide and oxygen catalyzed by said transition metal to react thereby removing said dissolved oxygen from said water; and c. injecting said water into said well and thereby retarding the corrosion of metal in contact with said water.