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- W1969704639 abstract "N <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> O formation was studied using Sequencing Biofilm Batch Reactor (SBBR) by applying different DO (Dissolved Oxygen) gradient in the system. Simultaneous nitrification and denitrification (SND) process was achieved at different DO concentrations. Total N <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> O productions were 0.495, 0.423, 0.843 and 2.01 mg-N/L respectively in accordance with DO concentrations, which were controlled at 1.0, 2.0, 2.5 and 3.0mg/L. Nitrite accumulation increased with the increasing of DO concentration. The activity of N2O reductase was inhibited by higher nitrite, which resulted in N <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> O emission. Besides, nitrifier denitrification process during which nitrite as electron acceptor and ammonium as electron donor was responsible for part of N <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> O emission. When DO was controlled at 2.0 mg/L, more than 97% of ammonium was removed by SND process and N <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> O emission was lower than any other processes. It showed that both lower and higher DO concentrations could suppress SND process and a balanced SND may reduce N <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> O production." @default.
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- W1969704639 date "2011-02-01" @default.
- W1969704639 modified "2023-09-23" @default.
- W1969704639 title "The Effect of DO on N2O Production in Simultaneous Nitrification and Denitrification Process" @default.
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- W1969704639 doi "https://doi.org/10.1109/cdciem.2011.265" @default.
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