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Lü Yongtao, Wang Lei, Sun Ting, Wang Xudong, Wang Zhiying. Nitrogen conversion pathway of autotrophic nitrogen removal process in single SBR[J]. Chinese Journal of Environmental Engineering, 2013, 7(4): 1201-1205.
Citation: Lü Yongtao, Wang Lei, Sun Ting, Wang Xudong, Wang Zhiying. Nitrogen conversion pathway of autotrophic nitrogen removal process in single SBR[J]. Chinese Journal of Environmental Engineering, 2013, 7(4): 1201-1205.
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Nitrogen conversion pathway of autotrophic nitrogen removal process in single SBR

  • 1.

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

  • Received Date: 28/05/2012
    Accepted Date: 20/02/2012
    Available Online: 09/04/2013
    Fund Project:
  • Batch experiments and stoichiometry were employed to demonstrate the performance and nitrogen conversion pathway of autotrophic nitrogen removal in single SBR. The sequencing batch reactor was performed well, and the removal volume loading and removal rate reached 0.49 kg N/(m3·d) and 0.20 kg N/(kg VSS·d), respectively. 82% of ammonia was converted to dinitrogen gas, and 10% of ammonia was converted to nitrate. From batch experiments, anammox activity of 0.12 kg NH4+-N/(kg VSS·d), nitrification activity of 0.04 kg NO2--N/(kg VSS·d) and autotrophic denitrification activity of 0.03 kg NO2--N/(kg VSS·d) were achieved, respectively. It revealed the coexistence of shortcut nitrification, anammox and denitrification with hydrogen as electron donor in SBR and the nitrate was caused by anammox and nitrification.
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Nitrogen conversion pathway of autotrophic nitrogen removal process in single SBR

  • Received Date: 28/05/2012
  • Accepted Date: 20/02/2012
  • Available Online: 09/04/2013
Fund Project:

Abstract: Batch experiments and stoichiometry were employed to demonstrate the performance and nitrogen conversion pathway of autotrophic nitrogen removal in single SBR. The sequencing batch reactor was performed well, and the removal volume loading and removal rate reached 0.49 kg N/(m3·d) and 0.20 kg N/(kg VSS·d), respectively. 82% of ammonia was converted to dinitrogen gas, and 10% of ammonia was converted to nitrate. From batch experiments, anammox activity of 0.12 kg NH4+-N/(kg VSS·d), nitrification activity of 0.04 kg NO2--N/(kg VSS·d) and autotrophic denitrification activity of 0.03 kg NO2--N/(kg VSS·d) were achieved, respectively. It revealed the coexistence of shortcut nitrification, anammox and denitrification with hydrogen as electron donor in SBR and the nitrate was caused by anammox and nitrification.

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