EFFECTS OF AERATION MODE ON NITRIFICATION FOR ANAMMOX AT ROOM TEMPERATURE

ZHANG Chi; SHA Hongju; SUN Jianping; LÜ Ze; HU Xiaomin

doi:10.13205/j.hjgc.202308007

Volume 41 Issue 8

Aug. 2023

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2023 > 41(8): 51-56,64

YAN Xiuyi, GU Zhibin, LI Zhimeng, QIN Yu, DENG Meng. ARENIC IMMOBILIZATION IN SOIL USING IRON/TITANIUM COMPOSITE[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(8): 181-187. doi: 10.13205/j.hjgc.202308023

Citation:

ZHANG Chi, SHA Hongju, SUN Jianping, LÜ Ze, HU Xiaomin. EFFECTS OF AERATION MODE ON NITRIFICATION FOR ANAMMOX AT ROOM TEMPERATURE[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(8): 51-56,64. doi: 10.13205/j.hjgc.202308007

YAN Xiuyi, GU Zhibin, LI Zhimeng, QIN Yu, DENG Meng. ARENIC IMMOBILIZATION IN SOIL USING IRON/TITANIUM COMPOSITE[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(8): 181-187. doi: 10.13205/j.hjgc.202308023

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EFFECTS OF AERATION MODE ON NITRIFICATION FOR ANAMMOX AT ROOM TEMPERATURE

doi: 10.13205/j.hjgc.202308007

1. School of Municipal & Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China;
2. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China

Received Date: 2022-11-14
Available Online: 2023-11-15

Abstract

Abstract

The effects of different aeration modes on the start-up and stable operation of nitrification were studied at room temperature (25±1) ℃. The results showed that a long continuous aeration mode (aeration time of 10 h) could not achieve nitrification. However, long continuous aeration mode (aeration time of 6 h) and intermittent aeration mode (aeration time of 30 min/anaerobic of 30 min) could both achieve the start-up and stable operation of nitrification, and the accumulation rate of nitrite nitrogen could reach 88.81% and 64.48%, respectively. The switching mode of aeration/anaerobic could effectively reduce the activity of nitrite-oxidizing bacteria. Meanwhile, the switching of aerobic/anoxic mode could also reduce the activity of some ammonia-oxidizing bacteria, therefore, the effluent NO^-₂-N/NH₄⁺-N of the intermittent aeration mode could meet the influent demand of the subsequent anammox process. Continuous aeration mode could provide a stable living environment due to long-time aeration, which was advantageous to the growth and metabolism of ammonia-oxidizing bacteria and to achieve a higher nitrite accumulation rate, but it cannot meet the subsequent anammox influent’s requirements on ratio of NO^-₂-N to NH₄⁺-N.
- room temperature,
- nitrification,
- aeration mode,
- ammonia oxidizing bacteria,
- nitrite-oxidizing bacteria

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References(32)

References

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