US 12,410,082 B2
Method for treating middle and mature landfill leachate by endogenous denitrification combined autotrophic nitrogen removal process
Yongzhen Peng, Beijing (CN); Haoran Liang, Beijing (CN); Xiyao Li, Beijing (CN); and Zhong Wang, Beijing (CN)
Assigned to BEIJING UNIVERSITY OF TECHNOLOGY, Beijing (CN)
Appl. No. 17/919,919
Filed by BEIJING UNIVERSITY OF TECHNOLOGY, Beijing (CN)
PCT Filed Oct. 29, 2021, PCT No. PCT/CN2021/127401
§ 371(c)(1), (2) Date Oct. 19, 2022,
PCT Pub. No. WO2022/242040, PCT Pub. Date Nov. 24, 2022.
Claims priority of application No. 202110548792.6 (CN), filed on May 20, 2021.
Prior Publication US 2024/0208846 A1, Jun. 27, 2024
Int. Cl. C02F 3/30 (2023.01); C02F 103/06 (2006.01)
CPC C02F 3/307 (2013.01) [C02F 2103/06 (2013.01); C02F 2209/06 (2013.01)] 2 Claims
OG exemplary drawing
 
1. An apparatus for treating middle and mature landfill leachate by endogenous denitrification combined autotrophic nitrogen removal process, comprising a raw water tank, a partial nitrification and endogenous denitrification sequencing batch reactor (PN/ED-SBR), a middle water tank, and an anaerobic ammonium oxidation upflow anaerobic sludge blanket (AMOX-UASB) reactor,
wherein the raw water tank is provided with a first water inlet, a first water outlet, a second water outlet, a first water inlet peristaltic pump, and a second water inlet peristaltic pump; the PN/ED-SBR is provided with a pH/DO real-time monitoring device, a third water outlet, a second water inlet, a mixer, an aeration plate, a third water inlet, and a fourth water outlet; the middle water tank is provided with a first middle water tank, a fourth water inlet, a fifth water outlet, a third water inlet peristaltic pump, a second middle water tank, a fifth water inlet, a sixth water outlet, and a fourth water inlet peristaltic pump; the AMOX-UASB is provided with an exhaust port, a seventh water outlet, an overflow weir, a three-phase separator, a return port, a return peristaltic pump, and a sixth inlet nozzle, and
wherein the first water outlet of the raw water tank is connected to the sixth water inlet of AMOX-UASB through the second water inlet peristaltic pump, the second water outlet of the raw water tank is connected to the second water inlet of PN/ED-SBR through the first water inlet peristaltic pump, the fourth water outlet of PN/ED-SBR is connected to the fourth water inlet of the first middle water tank, the fifth water outlet of the first middle water tank is connected to the sixth water inlet of the AMOX-UASB through the third water inlet peristaltic pump, the return port of the AMOX-UASB is connected to the sixth water inlet through the return peristaltic pump, the AMOX-UASB is connected to the fifth water inlet of the second middle tank, and the sixth water outlet of the second middle water tank is connected to the third water inlet of the PN/ED-SBR through the fourth water inlet peristaltic pump.