2017 Volume 11 Issue 9
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JIANG Hangcheng, MA Yiming, ZHANG Yuankai, SONG Xinxin, WANG Hongchen. Biological activity recovery and start-up of mainstream shortcut nitrafication system[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 4952-4957. doi: 10.12030/j.cjee.201612224
Citation: JIANG Hangcheng, MA Yiming, ZHANG Yuankai, SONG Xinxin, WANG Hongchen. Biological activity recovery and start-up of mainstream shortcut nitrafication system[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 4952-4957. doi: 10.12030/j.cjee.201612224
shu

Biological activity recovery and start-up of mainstream shortcut nitrafication system

  • 1.

    College of Environment and Natural Resources, Renmin University of China, Beijing 100872, China

  • Received Date: 03/03/2017
    Accepted Date: 29/12/2016
    Available Online: 26/08/2017
    Fund Project:
  • In order to achieve the mainstream shortcut nitrification-denitrification and nitritation-ANAMMOX, an online pH-DO control mainstream nitritation system was built, which in a pilot SBR. After recovering the activity of seed sludge under high DO and municipal wastewater, denitrification was added to stabilize shortcut nitrification. At last,ANAMMOX was connected with SBR to realize auto trophic nitrogen removal.The nitrogen removal rate, nitrite accumulation rate during start-up process was investigated to characterize the stabilization of system. The results showed that when control the DO of SBR reactor at 2 to 2.5 mg·L-1, HRT from 8 to 10 h, SRT from 4 to 5 d, and T=25℃,the nitrite accumulation rate can keep 90%, and NO2--N/NH4+-N=0.96±0.18. The nitrogen removal rate of shortcut nitrification-denitrification can reach 50% and TIN removal rate can reach 60% after 3 months. The nitrogen removal rate and TIN removal rate of nitritation-ANAMMOX can achieve 90%, and the effluent can reach primary discharging standard A. Our study shows that shortcut nitrification system can be start-up under high DO successfully, and the online pH-DO control system play an important role in the stability of nitritation. Nitritation-ANAMMOX can realize autotrophic nitrogen removal.
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Biological activity recovery and start-up of mainstream shortcut nitrafication system

  • Received Date: 03/03/2017
  • Accepted Date: 29/12/2016
  • Available Online: 26/08/2017
Fund Project:

Abstract: In order to achieve the mainstream shortcut nitrification-denitrification and nitritation-ANAMMOX, an online pH-DO control mainstream nitritation system was built, which in a pilot SBR. After recovering the activity of seed sludge under high DO and municipal wastewater, denitrification was added to stabilize shortcut nitrification. At last,ANAMMOX was connected with SBR to realize auto trophic nitrogen removal.The nitrogen removal rate, nitrite accumulation rate during start-up process was investigated to characterize the stabilization of system. The results showed that when control the DO of SBR reactor at 2 to 2.5 mg·L-1, HRT from 8 to 10 h, SRT from 4 to 5 d, and T=25℃,the nitrite accumulation rate can keep 90%, and NO2--N/NH4+-N=0.96±0.18. The nitrogen removal rate of shortcut nitrification-denitrification can reach 50% and TIN removal rate can reach 60% after 3 months. The nitrogen removal rate and TIN removal rate of nitritation-ANAMMOX can achieve 90%, and the effluent can reach primary discharging standard A. Our study shows that shortcut nitrification system can be start-up under high DO successfully, and the online pH-DO control system play an important role in the stability of nitritation. Nitritation-ANAMMOX can realize autotrophic nitrogen removal.

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