C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 9/14 (2006.01) C02F 1/44 (2006.01) C02F 1/52 (2006.01) C02F 3/30 (2006.01) C02F 9/02 (2006.01) C12P 7/02 (2006.01)
Patent
CA 2657072
contaminated with the expected range of contaminants typically associated with produced water, including water contaminated with slick water, methanol and boron. The system includes anaerobically digesting the contaminated water, followed by aerating the water to enhance biological digestion. After aeration, the water is separated using a flotation operation that effectively removes the spent friction reducing agents and allows the treated water to be reclaimed and reused as fracturing water, even though it retains levels of contaminants, including boron and methanol, that would prevent its discharge to the environment under existing standards. The treated water may further be treated by removing the methanol via biological digestion in a bioreactor, separating a majority of the contaminants from the water by reverse osmosis and removing the boron that passes through the reverse osmosis system with a boron-removing ion exchange resin.
Eubank Jesse
Rath Richard D.
Shafer Lee L.
Anticline Disposal Llc
Robic
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