2010 Volume 4 Issue 12
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Wang Xudong, Xu Wei, Wang Lei, Lv Yongtao, Cui Xing, Bai Xiaorong. Effects of aeration quantity on nitrification determined with microelectrode in SBR system[J]. Chinese Journal of Environmental Engineering, 2010, 4(12): 2705-2708.
Citation: Wang Xudong, Xu Wei, Wang Lei, Lv Yongtao, Cui Xing, Bai Xiaorong. Effects of aeration quantity on nitrification determined with microelectrode in SBR system[J]. Chinese Journal of Environmental Engineering, 2010, 4(12): 2705-2708.
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Effects of aeration quantity on nitrification determined with microelectrode in SBR system

  • 1.

    School of Environmental and Municipal Engineering, Xi’an University of Architecture ＆ Technology, Xi’an 710055, China

  • 2.

    Xi’an Research Institute of Environmental Protection, Xi’an 710002, China

  • Received Date: 16/11/2009
    Accepted Date: 24/10/2009
    Fund Project:
  • To investigate the effects of aeration quantity on nitrification, the same three SBRs with aeration quantities of 4, 10 and 16 L/h were adopted to treat synthetic wastewater. Also the selfmade microelectrodes of DO, NO-3, NH+4 and pH were used to determine the substrate concentrations in the internal micro-environment of activated sludge flocs. The results indicated that when the aeration quantity was 4 L/h, there was an anaerobic micro-zone inside the activated sludge floc, the concentration of NO-3-N decreased which showed denitrification happened. When the aeration quantities were 10 L/h and 16 L/h, nitrification occurred inside the activated sludge floc, and with the increase of aeration quantity, the concentration of NH+4-N decreased, the concentration of NO-3-N increased, and the pH value decreased.
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Effects of aeration quantity on nitrification determined with microelectrode in SBR system

  • Received Date: 16/11/2009
  • Accepted Date: 24/10/2009
Fund Project:

Abstract: To investigate the effects of aeration quantity on nitrification, the same three SBRs with aeration quantities of 4, 10 and 16 L/h were adopted to treat synthetic wastewater. Also the selfmade microelectrodes of DO, NO-3, NH+4 and pH were used to determine the substrate concentrations in the internal micro-environment of activated sludge flocs. The results indicated that when the aeration quantity was 4 L/h, there was an anaerobic micro-zone inside the activated sludge floc, the concentration of NO-3-N decreased which showed denitrification happened. When the aeration quantities were 10 L/h and 16 L/h, nitrification occurred inside the activated sludge floc, and with the increase of aeration quantity, the concentration of NH+4-N decreased, the concentration of NO-3-N increased, and the pH value decreased.

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