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Effect of ozone pretreatment on biogranulation with partial nitritation - Anammox two stages for nitrogen removal from mature landfill leachate
Yan, Zhenyu1; Li, Anjie1; Shim, Hojae2; Wang, Danyang1; Cheng, Shuqian1; Wang, Yuexing3; Li, Ming4
2022-09
Source PublicationJournal of Environmental Management
ABS Journal Level3
ISSN0301-4797
Volume317
Abstract

Due to the extremely low C/N ratio, high concentration of ammonia nitrogen and refractory organic matter of mature landfill leachate (MLL), appropriate processes should be selected to effectively remove nitrogen and reduce disposal costs. Partial nitritation (PN) and anaerobic ammonia oxidation (AMX) have been used as the main nitrogen removal processes for MLL, and the sludge granulation in PN and AMX processes could contribute to high biological activity, good sedimentation performance, and stable resistance to toxicity. In this study, the O-PN-AMX biogranules process was selected to effectively remove nitrogen from MLL without carbon addition and pH adjustment. Without uneconomical NH-N oxidation and wasting the alkalinity of MLL, ozone pretreatment achieved color removal, decreased humic- and fulvic-like acid substances, and alleviated the MLL toxicity on ammonia oxidizers. In addition, the ozonation of MLL could shorten the start-up time and improve the treatment efficiency and biogranules stability of PN and AMX processes. Efficient and stable nitritation was achieved in PN reactor without strict dissolved oxygen (DO) control, which was attributed to the unique structure of granular sludge, ozone pretreatment, and alternating inhibition of free ammonia and free nitric acid on nitrite oxidizers. Through the application of ozone pretreatment and granular sludge, the nitrogen removal rate (NRR) and nitrogen removal efficiency (NRE) of the O-PN-AMX biogranules process reached 0.39 kg/m/day and 85%, respectively, for the undiluted MLL treatment. This study might provide a novel and effective operation strategy of combined process for the efficient, economical, and stable nitrogen removal from MLL.

KeywordAmmonia Oxidation Granular Sludge Mature Landfill Leachate (Mll) Nitrogen Removal Ozone
DOI10.1016/j.jenvman.2022.115470
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000809965800001
Scopus ID2-s2.0-85131602774
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Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorLi, Anjie
Affiliation1.Key Laboratory of Water and Sediment Sciences of Ministry of Education / State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China
2.Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau SAR, 999078, China
3.Shenzhen Shenshui Ecological & Environmental Technology Co., Ltd., Shenzhen, 518048, China
4.Engelbart (Beijing) Eco-Tech Co., Ltd., Beijing, 101300, China
Recommended Citation
GB/T 7714
Yan, Zhenyu,Li, Anjie,Shim, Hojae,et al. Effect of ozone pretreatment on biogranulation with partial nitritation - Anammox two stages for nitrogen removal from mature landfill leachate[J]. Journal of Environmental Management,2022,317.
APA Yan, Zhenyu,Li, Anjie,Shim, Hojae,Wang, Danyang,Cheng, Shuqian,Wang, Yuexing,&Li, Ming.(2022).Effect of ozone pretreatment on biogranulation with partial nitritation - Anammox two stages for nitrogen removal from mature landfill leachate.Journal of Environmental Management,317.
MLA Yan, Zhenyu,et al."Effect of ozone pretreatment on biogranulation with partial nitritation - Anammox two stages for nitrogen removal from mature landfill leachate".Journal of Environmental Management 317(2022).
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