US 12,391,592 B2
Method for wastewater treatment
Sean Frisky, Regina (CA); Jason Beaudin, Regina (CA); Justin Lee, Regina (CA); and Joel Wolensky, Regina (CA)
Assigned to Ground Effects Environmental Services Inc., Regina (CA)
Filed by Ground Effects Environmental Services Inc., Regina (CA)
Filed on Aug. 31, 2020, as Appl. No. 17/007,478.
Claims priority of provisional application 62/989,264, filed on Mar. 13, 2020.
Prior Publication US 2021/0284559 A1, Sep. 16, 2021
Int. Cl. C02F 9/00 (2023.01); C02F 1/00 (2023.01); C02F 1/24 (2023.01); C02F 1/463 (2023.01); C02F 1/56 (2023.01); C02F 1/78 (2023.01); C02F 101/10 (2006.01); C02F 101/32 (2006.01); C02F 103/10 (2006.01)
CPC C02F 9/00 (2013.01) [C02F 1/004 (2013.01); C02F 1/24 (2013.01); C02F 1/463 (2013.01); C02F 1/56 (2013.01); C02F 1/78 (2013.01); C02F 2101/101 (2013.01); C02F 2101/32 (2013.01); C02F 2103/10 (2013.01); C02F 2303/04 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for treating a liquid containing silica during oil production, the method comprising:
providing an electric oxidation reactor to treat the liquid to electric oxidation treatment;
feeding the liquid containing silica into the electric oxidation reactor and adding a coagulant to separate contaminants including silica from the liquid to produce a coagulated liquid;
providing an ozone reactor for receiving the coagulated liquid from the electric oxidation reactor;
adding ozone to the coagulated liquid in the ozone reactor to destruct hydrogen sulfide and to disinfect and oxidize contaminants in the coagulated liquid to form an ozone-liquid, wherein the ozone-liquid contains ozone;
providing a dissolved air floatation tank for receiving the ozone-liquid from the ozone reactor;
removing a suspended mass containing silica in the ozone-liquid to form an initially treated liquid;
providing a filtration mechanism for receiving the initially treated liquid; and
filtering residual oils and contaminants from the initially treated liquid using the filtration mechanism to form a filtered liquid,
wherein polymer is added to the ozone-liquid.