	US 11,805,762 B2
	Process for controlling the concentration of dissolved oxygen within a specified open body of water
Mike Beattie, Saint Andrews (CA); and David Glassford, Saint Andrews (CA)
Assigned to GIS Gas Infusion Systems Inc., Saint Andrews (CA)
Appl. No. 16/957,255
Filed by GIS Gas Infusion Systems Inc., Saint Andrews (CA)
PCT Filed Jan. 16, 2019, PCT No. PCT/CA2019/050060 § 371(c)(1), (2) Date Jun. 23, 2020, PCT Pub. No. WO2019/140523, PCT Pub. Date Jul. 25, 2019.
Claims priority of provisional application 62/617,821, filed on Jan. 16, 2018.
Prior Publication US 2020/0390071 A1, Dec. 17, 2020
Int. Cl. A01K 63/04 (2006.01); A01K 61/13 (2017.01); C02F 1/00 (2023.01); C02F 1/20 (2023.01); C02F 1/72 (2023.01); C02F 7/00 (2006.01); C02F 101/16 (2006.01); C02F 103/20 (2006.01)

CPC A01K 63/042 (2013.01) [A01K 61/13 (2017.01); A01K 63/047 (2013.01); C02F 1/008 (2013.01); C02F 1/20 (2013.01); C02F 1/727 (2013.01); C02F 7/00 (2013.01); C02F 2101/16 (2013.01); C02F 2103/20 (2013.01); C02F 2209/22 (2013.01)]

18 Claims

1. A process for maintaining fish in a cage in an open body of water, the process comprising: restricting movement of water into and out of a part of the cage, forming a portion of water within the part of the cage; and injecting oxygenated water produced by an inline saturator into the portion of water to raise a dissolved oxygen level and to lower a dissolved nitrogen gas level therein, wherein the oxygenated water is injected into the portion of water via a distribution device, the distribution device comprises a rotating supply pipe configured to circumferentially rotate during the injection of the oxygenated water to thereby rotationally inject the oxygenated water from the distribution device into the portion of water and encourage dispersion of the oxygenated water therein; wherein the process comprises monitoring the dissolved oxygen level in the portion of water, and performing the restricting and injecting when the monitored dissolved oxygen level falls below a predetermined level.