Effective utilization of refractory dissolved organic matters in domestic sewage allows to enhanced nitrogen removal by integrated fermentation, nitrification, denitratation and anammox process

Yiling Wu,Xingxing Zhang,Junjiang Chen,Chaochao Wang,Xiaonong Zhang, Jiaqiao Chen,Tianning Cai,Wenru Liu, Xiang Li,Peng Wu

Bioresource Technology（2022）

Cited 7|Views8

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Abstract

•Novel and robust IFNDA obtained high TN removal of 94.1% from domestic sewage.•Anammox dominated TN removal in IFNDA process with the percentage of 88.6%.•High ratio of acetate (54.0%) and VFAs/COD (64.5%) facilitated NO3–-N reduction.•Fermentation microbes and nitrogen conversion bacteria were isolatedly enriched.•Energy-efficient IFNDA has a promising opportunity for upgrading WWTPs.

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Key words

Domestic sewage,Two-stage fermentation,Denitratation,Anammox,Microbial community

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