US 12,410,079 B2
Membrane assembly for supporting a biofilm
Pierre Lucien Cote, Ancaster (CA); and Steven Kristian Pedersen, Nottawa (CA)
Assigned to BL TECHNOLOGIES, INC., Minnetonka, MN (US)
Filed by BL TECHNOLOGIES, INC., Minnetonka, MN (US)
Filed on Jun. 20, 2023, as Appl. No. 18/338,182.
Application 18/338,182 is a continuation of application No. 16/998,704, filed on Aug. 20, 2020, granted, now 11,724,947.
Application 16/998,704 is a continuation of application No. 14/769,461, granted, now 10,781,119, issued on Sep. 22, 2020, previously published as PCT/US2013/027435, filed on Feb. 22, 2013.
Prior Publication US 2023/0331605 A1, Oct. 19, 2023
Int. Cl. C02F 3/12 (2023.01); B01D 63/02 (2006.01); B01D 63/04 (2006.01); B01D 69/08 (2006.01); C02F 3/10 (2023.01); C02F 3/20 (2023.01)
CPC C02F 3/1273 (2013.01) [B01D 63/027 (2013.01); B01D 63/04 (2013.01); B01D 69/081 (2013.01); C02F 3/102 (2013.01); C02F 3/103 (2013.01); C02F 3/208 (2013.01); B01D 2325/40 (2013.01); C02F 2303/20 (2013.01); Y02W 10/10 (2015.05)] 5 Claims
OG exemplary drawing
 
1. A process comprising the steps of,
immersing a gas transfer membrane in water;
flowing a gas into the gas transfer membrane;
supporting a biofilm on the gas transfer membrane;
transferring oxygen to the biofilm;
withdrawing an exhaust gas from the gas transfer membrane; and,
producing bubbles comprising the exhaust gas in the water,
wherein the exhaust gas is transferred from the gas transfer membrane to an aerator and wherein the bubbles comprising the exhaust gas are produced by the aerator and wherein the bubbles help control a thickness of the biofilm.