Nitrogen removal performance and feeding strategy optimisation in a nitritation denitrification step-feed sequencing batch reactor system

被引：0
作者：
Wang, Yihan [1 ,2 ,3 ]
Wu, Zhenjun [1 ,2 ,3 ]
Qin, Qingwen [1 ,2 ,3 ]
Chen, Lijie [1 ,2 ,3 ]
Cai, Ming [4 ]
Chen, Xin [1 ,2 ,3 ]
Liu, Yutong [1 ,2 ,3 ]
Su, Ziang [1 ,2 ,3 ]
Fan, Xinyi [1 ,2 ,3 ]
Cheng, Lang [1 ,2 ,3 ]
机构：
[1] Henan Univ Technol, Coll Environm Engn, Zhengzhou 450001, Peoples R China
[2] Zhengzhou Int Cooperat Base Sci & Technol Carbon N, Zhengzhou 450001, Peoples R China
[3] Henan Int Joint Lab Environm Pollut Remediat & Gra, Zhengzhou 450001, Peoples R China
[4] Yellow River Engn Consulting Co Ltd, Zhengzhou 450001, Peoples R China
来源：
BIOCHEMICAL ENGINEERING JOURNAL | 2025年 / 220卷
基金：
中国国家自然科学基金;
关键词：
Nitrogen removal; Low C/N; IA/O-SFSBR; Nitritation Denitrification; Microbial community; WASTE-WATER TREATMENT; PARTIAL NITRIFICATION; ACTIVATED-SLUDGE; AERATION; BACTERIA; AMMONIA; TIME;
D O I：
10.1016/j.bej.2025.109761
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
A 90-day experiment was conducted to optimise the stability of Nitritation Denitrification and improve COD utilisation. The results showed that Nitritation Denitrification in a step-feed sequencing batch reactor using the influent-anoxic/aerobic (IA/O) mode can achieve efficient and stable nitrogen removal at C/N = 4. The removal efficiencies of NH4+-N and total inorganic nitrogen (TIN) were 95 % and 85.5 % respectively. Batch experiments were conducted that an unlimited increase in the number of step feeds in a limited time would affect the nitrogen removal. Extending the duration of the aerobic phase inhibited Flavobacterium and favoured the relative abundance of the nirS and nirK genes. This study may provide a reference for optimising the Nitritation Denitrification process.
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页数：11
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