US 12,116,298 B2
Method for removing nitrogen and phosphorus from sewage and wastewater through combination of biological nitrogen and phosphorus removal process using nitrite nitrogen and anaerobic ammonium oxidation process (anammox)
Young Hyun Park, Busan (KR); Dae Hwan Rhu, Yeoju-si (KR); Min Ki Jung, Daejeon (KR); Jae Min Kim, Sejong (KR); Jonathan Liberzon, Long Beach (CA); Jong Cheol Won, Suwon-si (KR); Joon Ho Cho, Goyang-si (KR); Swong Kyun Hong, Incheon (KR); Moon Jeong Kim, Seoul (KR); Kyung Sam Jeong, Incheon (KR); Min Hyuk Kim, Incheon (KR); and June Woo Lee, Seoul (KR)
Assigned to BKT CO., LTD., Daejeon (KR); and SUDOKWON LANDFILL SITE MANAGEMENT CORPORATION, Incheon (KR)
Filed by BKT CO., LTD., Daejeon (KR); and SUDOKWON LANDFILL SITE MANAGEMENT CORPORATION, Incheon (KR)
Filed on Dec. 30, 2021, as Appl. No. 17/565,978.
Application 17/565,978 is a continuation of application No. PCT/KR2020/008657, filed on Jul. 2, 2020.
Claims priority of application No. 10-2019-0080399 (KR), filed on Jul. 3, 2019.
Prior Publication US 2022/0144678 A1, May 12, 2022
Int. Cl. C02F 3/30 (2023.01); C02F 3/34 (2023.01); C02F 101/10 (2006.01); C02F 101/16 (2006.01)
CPC C02F 3/307 (2013.01) [C02F 3/308 (2013.01); C02F 3/341 (2013.01); C02F 2101/105 (2013.01); C02F 2101/16 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A device for removing nutrients in sewage and wastewater, the device comprising:
an anaerobic tank receiving a portion of the sewage and wastewater and releasing phosphorus dissolved in the received portion of the sewage and wastewater;
a first anoxic tank performing denitrification by combining nitrite nitrogen with organic matter in the received portion of the sewage and wastewater;
an aerobic tank inducing up-taking of the phosphorus eluted in the anaerobic tank using first bacteria and oxidizing ammonia nitrogen in the received portion of the sewage and wastewater to nitrite nitrogen;
a second anoxic tank receiving a rest of the sewage and wastewater and denitrifying the nitrite nitrogen oxidized in the aerobic tank;
a re-aeration tank performing re-aeration using an air;
a solid-liquid separator separating bacteria ingesting the phosphorus in the sewage and wastewater that has passed through the second anoxic tank; and
an anaerobic ammonium oxidation tank denitrifying the nitrite nitrogen oxidized in the aerobic tank and ammonia nitrogen not oxidized in the aerobic tank, using second bacteria,
wherein a predetermined proportion of sludge is returned from the solid-liquid separator to the anaerobic tank;
wherein the aerobic tank returns a portion of the oxidized nitrite nitrogen to the first anoxic tank;
wherein the proportion of sewage and wastewater introduced into the second anoxic tank is

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wherein an internal return rate of nitrite nitrogen from the aerobic tank to the first anoxic tank is

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denitritation concentration of nitrite nitrogen in second anoxic tank is denitritation concentration in the device×the proportion of sewage and wastewater introduced into the second anoxic tank; and
the RAS is

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