厌氧氨氧化菌
水力停留时间
废水
流出物
反硝化
序批式反应器
化学
曝气
制浆造纸工业
污水处理
硝化作用
废物管理
环境工程
环境化学
环境科学
氮气
反硝化细菌
工程类
有机化学
作者
Luyuan Zhang,Qiong Zhang,Xiyao Li,Tong Jia,Shuying Wang,Yongzhen Peng
标识
DOI:10.1016/j.biortech.2022.127950
摘要
Anaerobic ammonia oxidation (Anammox) is a highly productive research area in municipal wastewater treatment. A novel combined process driven by partial nitrification/anammox (PN/A) and partial denitrification/anammox (PD/A) was established in this paper using a sequencing batch reactor (SBR) and two up-flow sludge beds (USBs). Municipal wastewater after carbon removal pretreatment in SBR entered PN/A-USB. PN/A process was initiated and enhanced by optimizing the intermittent aeration mode under low dissolved oxygen (DO). After enhancing and stabilizing the PD/A process, PN/A effluent entered the PD/A-USB along with raw municipal wastewater at a ratio of 4:1 and the combined system was established. Through this, this study achieved a nitrogen removal efficiency (NRE) of 84.9 % from municipal wastewater at an ultra-low total hydraulic residence time (HRT) of 3.9 h. Candidatus Brocadia (1.8 % in PN/A, 1.0 % in PD/A) was the only functional anammox bacterium in the combined process.
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