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[Setup and Microbial Community Analysis of ANAMMOX System for Landfill Leachate Treatment Coupling Partial
Qing Zhao1, Meng-Ying Liu1, Hui Lü2,3
1School of Civil Engineering, Guangzhou University, Guangzhou 510006, China.
Huan Jing Ke Xue= Huanjing Kexue
|December 20, 2019
Summary
This study successfully started an anaerobic ammonia oxidation (ANAMMOX) process for landfill leachate treatment, achieving high nitrogen removal rates and confirming the feasibility of coupling ANAMMOX with shortcut nitrification and denitrification.
Area of Science:
- Environmental microbiology
- Wastewater treatment technologies
- Biogeochemical cycles
Context:
- Landfill leachate poses significant environmental challenges due to high ammonia and organic content.
- Conventional treatment methods often struggle with efficiency and cost-effectiveness.
- Optimizing nitrogen removal processes is crucial for sustainable landfill management.
Purpose:
- To upgrade existing shortcut nitrification and denitrification processes for landfill leachate.
- To investigate the feasibility of coupling anaerobic ammonia oxidation (ANAMMOX) with nitrification and denitrification.
- To analyze microbial community dynamics during long-term operation.
Summary:
- An up-flow anaerobic sludge bed (UASB) reactor was successfully seeded and operated for ANAMMOX, achieving stable nitrogen removal within 149 days.
- High total nitrogen loading (4000.00 mg·(L·d)-1) and removal rates (3885.76 mg·(L·d)-1) were achieved, with >95% ammonium and nitrite removal efficiency.
- Microbial analysis revealed a significant increase in Planctomycetes (54.94%) and Candidatus Kuenenia (49.66%), confirming successful ANAMMOX process establishment.
Impact:
- Demonstrates a feasible and efficient method for upgrading landfill leachate treatment.
- Highlights the potential of coupling ANAMMOX with shortcut nitrification and denitrification for enhanced nitrogen removal.
- Provides insights into microbial community shifts crucial for optimizing biological wastewater treatment systems.
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