METHOD AND SYSTEM FOR THE TREATMENT OF PRODUCED WATER AND FLUIDS WITH CHLORINE DIOXIDE FOR REUSE

摘要

Embodiments of the invention relate generally to methods and systems for treating aqueous systems associated with industrial wastewater applications, in particular gas and crude oil drilling, pumping and production, in order to reduce or eliminate contamination and allow the water that is treated to be reused, in particular, to be reused for hydraulic fracturing.

主权项

1. A method for treating an aqueous system, comprising:
providing an aqueous fluid volume having an initial oxidant demand; introducing an oxidant into the aqueous volume at a flow rate that avoids off-gassing of volatile reductants from the aqueous volume, wherein said oxidant is selected from oxygen, air, oxygen-enriched air, and a combination of the same; combining the aqueous volume and oxidant for a minimum residence time sufficient to lower the initial oxidant demand to a reduced oxidant demand; providing at least one chlorine oxide; and combining the aqueous volume and a quantity of at least one chlorine oxide in an amount sufficient to eliminate the reduced oxidant demand, wherein said at least one chlorine oxide is selected from chlorine dioxide, chlorite, and a combination of the same.