Method for treating production water from a method for enhanced oil and/or gas recovery

摘要

The present invention concerns a method for treating the production water originating from enhanced hydrocarbon recovery, and containing one or more water-soluble polymers and Fe²⁺ ions, consisting of at least partially oxidizing the Fe²⁺ ions by introducing at least one reaction activator and oxygen into said production water, the molar ratio of introduced oxygen to Fe²⁺ ions being less than or equal to 0.25.