公开(公告)号：US20240208846A1

公开(公告)日：2024-06-27

申请号：US17919919

申请日：2021-10-29

Applicant: BEIJING UNIVERSITY OF TECHNOLOGY

Inventor： Yongzhen PENG ,  Haoran LIANG ,  Xiyao LI ,  Zhong WANG

IPC: C02F3/30 ,  C02F103/06

CPC classification number: C02F3/307 ,  C02F2103/06 ,  C02F2209/06

Abstract: A method for treating middle and mature landfill leachate by endogenous denitrification combined autotrophic nitrogen removal process, which belongs to a field of biological treatment of high-ammonia-nitrogen wastewater. The middle and mature landfill leachate firstly enters a PN/ED-SBR reactor to perform in an A/O (anaerobic/aerobic) mode, microorganisms in an anaerobic stage absorb an external carbon source and store the external carbon source as an intracellular carbon source, partial nitrification is performed in the aerobic stage, and the ammonia nitrogen in inlet water is completely oxidized into nitrite nitrogen; after the reaction is finished, an effluent containing nitrite nitrogen and middle and mature landfill leachate are mixed and then enter an AMOX-UASB reactor to perform anammox reaction, the effluent of the reactor is pumped into the PN/ED-SBR reactor again to perform in the anoxic mode, and oxidized nitrogen is removed through endogenous denitrification.