Characteristics and mechanism of autotrophic nitrogen removal in a single SBR

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• Affiliation of Author(s):环境与市政工程学院
• Journal:The 2nd IWA Asia Pacific Regional YWP Conference
• Key Words:中文关键字：厌氧氨氧化，自养反硝化，亚硝化，Nitrosomonas菌，计量关系，英文关键字：Anammox; autotrophic denitrification; nitritation;
• Abstract:A lab-scale sequencing batch reactor treating synthetic NH4+ rich wastewater showing high N losses was examined for microbial and nitrogen conversion characteristics. 80.8 ± 5% of N removal efficiency and highest volume loading of 0.493kg N m–3 d–1 were achieved, while the ratio of nitrate produced to ammonium consumed was only 0.09 (n=60), lower than that in CANON process. In batch tests, the biomass showed good anaerobic and aerobic ammonium-oxidizing activity (10.13 and 6.71 mg NH4+–N g–1 VSS h–1, respectively) but no nitrite-oxidizing activity. Fluorescence in situ hybridization analysis revealed that aerobic ammonium-oxidizing genus Nitrosomonas dominated the community, and anaerobic ammonium-oxidizing bacteria were also detected. Nitrogen mass balance and stoichiometry were employed to show that ammonium was mainly removed (71.92%) by coaction of nitritation and Anammox, and 25.84% of N losses were attributed to nitritation-denitrification.
• Note:王磊
• Co-author:孙婷
• First Author:王志盈,yangyongzhe,wangxudong,wanglei,lvyongtao
• Indexed by:Journal paper
• Volume:卷：
• Issue:期：
• Page Number:页：
• Translation or Not:no
• Date of Publication:2009-11-01