公开(公告)号：US20240208846A1

公开(公告)日：2024-06-27

申请号：US17919919

申请日：2021-10-29

申请人： BEIJING UNIVERSITY OF TECHNOLOGY

发明人： Yongzhen PENG ,  Haoran LIANG ,  Xiyao LI ,  Zhong WANG

IPC分类号： C02F3/30 ,  C02F103/06

CPC分类号： C02F3/307 ,  C02F2103/06 ,  C02F2209/06

摘要： 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.

公开(公告)号：US20240109798A1

公开(公告)日：2024-04-04

申请号：US17768668

申请日：2021-07-21

申请人： Beijing University of Technology

发明人： Yongzhen PENG ,  Jingang QIU ,  Qiong ZHANG ,  Zhong WANG ,  Hao JIANG ,  Shang REN

IPC分类号： C02F3/30

CPC分类号： C02F3/307 ,  C02F3/303 ,  C02F3/305 ,  C02F2101/163 ,  C02F2209/02 ,  C02F2209/04 ,  C02F2209/06 ,  C02F2209/38

摘要： Disclosed are a method and device for realizing advanced nitrogen removal of mature landfill leachate and sludge reduction by using sludge fermentation products as carbon source, belonging to the field of biological treatment of sludge of high ammonia nitrogen wastewater. The mature landfill leachate first enters a PNA-SBR, the reactor operates in an anoxic/anaerobic/oxic (A/A/O) mode, denitrification is performed at an anoxic state; then anaerobic ammonia oxidation is performed at an anaerobic stage to remove part of ammonia nitrogen and nitrite nitrogen; partial nitrification is performed at an oxic stage to remove the ammonia nitrogen; discharged water is pumped into a DN-SBR, meanwhile, an excess sludge fermentation mixture is added, the reactor operates in an anoxic/anaerobic/oxic (A/A/O) mode, organic matters in the sludge fermentation mixture are used for denitrification at an anoxic stage, and meanwhile, microorganisms store an inner carbon source; ammonia nitrogen brought by the fermentation mixture is removed at an anaerobic stage; and denitrification is performed through the inner carbon source at an oxic stage. The remarkable sludge reduction effect is achieved while a removal rate of TN achieves 96.0%, and the method and the device are suitable for advanced removal of the high ammonia nitrogen wastewater.

公开(公告)号：US20230071009A1

公开(公告)日：2023-03-09

申请号：US17983786

申请日：2022-11-09

申请人： BEIJING UNIVERSITY OF TECHNOLOGY

发明人： Yongzhen PENG ,  Fangzhai ZHANG ,  Zhong WANG ,  Hao JIANG ,  Shang REN ,  Jingang QUI

IPC分类号： C02F3/00 ,  C02F11/02 ,  C02F3/30

摘要： Disclosed is an apparatus and method for synchronously treating sewage and sludge through a step-feed partial nitrification coupling anaerobic ammonia oxidation process, belonging to the biological treatment field. Ammonia rich landfill leachate is firstly pumped into an aerobic reactor to realize partial nitrification process; exogenous surplus sludge coupling with partial nitrification reactor effluent are input to an anoxic reactor together for achieving integrated fermentation and denitrification process; finally, effluent from the anoxic reactor is pumped into an integrated autotrophic nitrogen removal reactor by a step-feed mode, the integrated reactor contains two main running units of aeration and anoxic stirring, ammonia is oxidized into nitrite in aeration stage, and the generated nitrite and ammonia contained in secondary influent are further removed through anammox process which operates stably and reliably, realizes efficient nitrogen removal from landfill leachate without external carbon source addition, and realizes the purpose of exogenous excess sludge reduction simultaneously.

公开(公告)号：US20240166542A1

公开(公告)日：2024-05-23

申请号：US17783309

申请日：2021-10-29

申请人： Beijing University of Technology

发明人： Yongzhen PENG ,  Wanyi FENG ,  Jialin LI ,  Shenhua YANG ,  Shuai LI

IPC分类号： C02F3/30 ,  C02F3/00 ,  C02F3/20 ,  C02F101/10 ,  C02F101/16

CPC分类号： C02F3/307 ,  C02F3/006 ,  C02F3/20 ,  C02F3/303 ,  C02F2101/105 ,  C02F2101/166 ,  C02F2209/06 ,  C02F2209/22

摘要： A method and device for in-situ enriching Anammox bacteria by conventional activated sludge, which belongs to a biological wastewater treatment technology. The device comprises a raw water tank, an anammox reactor and a water outlet tank. The method comprises the following steps: (1) taking traditional activated sludge from a municipal wastewater plant as inoculation sludge without special requirements on form of reactor and water quality of inflow; the mainstream anammox in-situ enrichment being realized mainly in three stages; (2) carbon and phosphorus removal stage, wherein carbon and phosphorus removal sludge is domesticated through joint control of aerobiotic time and sludge retention time; (3) partial nitrification stage, wherein the stage is realized through gradually extending the aerobiotic time; (4) anammox bacteria in-situ enrichment stage, wherein good culture retention conditions are provided through the artificial regulation strategies: (5) the method of the present invention only needs to construct or utilize the existing traditional activated sludge wastewater biological treatment devices and equipment without adding agents, which is conducive to the application of practical engineering.

公开(公告)号：US20230331609A1

公开(公告)日：2023-10-19

申请号：US17763807

申请日：2021-07-21

申请人： Beijing University of Technology

发明人： Yongzhen PENG ,  Jianwei LI ,  Jinjin LIU ,  Liang ZHANG

IPC分类号： C02F3/30 ,  C02F3/08

CPC分类号： C02F3/307 ,  C02F3/308 ,  C02F3/085 ,  C02F2101/105

摘要： The present application provides a system and method for realizing partial anammox advanced nitrogen and phosphorus removal through mainstream and sidestream biofilm cyclic alternating for a municipal wastewater treatment plant. The system includes three main component units: a mainstream zone (a), an advanced treatment zone (b) and a side stream zone (c). Advanced nitrogen and phosphorus removal of the entire system is realized through cyclic alternating of biofilms. In the mainstream zone (a), the main function of an anaerobic/anoxic zone is to perform heterotrophic denitrification nitrogen removal, and partial denitrification/anammox autotrophic nitrogen removal, and the main function of an oxic zone is to remove organic matter, perform aerobic phosphorus uptake, and complete a nitrification reaction. In a denitrification fluidized bed (8) in the advanced treatment zone (b), advanced treatment is performed for a mixed solution of effluent and raw water in the mainstream zone to achieve heterotrophic denitrification, and partial denitrification/anammox autotrophic nitrogen removal. A high-ammonia nitrogen anammox nitrogen removal zone (7) in the sidestream zone (c) enriches anammox bacteria based on biofilms, realizing autotrophic nitrogen removal of sidestream high-ammonia nitrogen wastewater.