US 11,851,356 B2
Bioreactor system and method for nitrification and denitrification
Frank M. Russo, Stony Brook, NY (US)
Assigned to THE RESEARCH FOUNDATION FOR THE STATE UNIVERSITY OF NEW YORK, Albany, NY (US)
Appl. No. 17/781,111
Filed by THE RESEARCH FOUNDATION FOR THE STATE UNIVERSITY OF NEW YORK, Albany, NY (US)
PCT Filed Jan. 5, 2021, PCT No. PCT/US2021/012145
§ 371(c)(1), (2) Date May 31, 2022,
PCT Pub. No. WO2021/141877, PCT Pub. Date Jul. 15, 2021.
Claims priority of provisional application 63/107,686, filed on Oct. 30, 2020.
Claims priority of provisional application 62/957,555, filed on Jan. 6, 2020.
Prior Publication US 2022/0411300 A1, Dec. 29, 2022
Int. Cl. C02F 3/30 (2023.01); C02F 3/00 (2023.01); C02F 103/00 (2006.01)
CPC C02F 3/302 (2013.01) [C02F 3/006 (2013.01); C02F 2103/005 (2013.01); C02F 2209/03 (2013.01); C02F 2301/046 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A method for nitrification and denitrification of septic effluent comprising:
contacting a septic effluent with oxygen in a pump chamber to generate a pump chamber effluent, the pump chamber effluent having a dissolved oxygen concentration;
passing the pump chamber effluent to a nitrification zone to generate a first partly nitrated effluent and second partly nitrated effluent;
passing the first partly nitrated effluent to an anoxic zone to generate a partly nitrated anoxic effluent, the anoxic effluent having a dissolved oxygen concentration less than the dissolved oxygen concentration of the pump chamber effluent;
passing the partly nitrated anoxic effluent to a first denitrification zone wherein a portion of the nitrates in the partly nitrated anoxic effluent is converted to nitrogen gas and recycling effluent from the first denitrification zone to the pump chamber; and
passing the second partly nitrated effluent to a second denitrification zone to generate a denitrification zone effluent.