A pilot study of partial denitrification-anammox coupled with MBR process to enhance nitrogen removal

ZHUANG Yanhua; ZHOU Junhong; XIA Yangguang; TAO Yuming; YANG Xiaoli

doi:10.13205/j.hjgc.202512012

Volume 43 Issue 12

Dec. 2025

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2025 > 43(12): 102-111

ZHUANG Yanhua, ZHOU Junhong, XIA Yangguang, TAO Yuming, YANG Xiaoli. A pilot study of partial denitrification-anammox coupled with MBR process to enhance nitrogen removal[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(12): 102-111. doi: 10.13205/j.hjgc.202512012

Citation:

ZHUANG Yanhua, ZHOU Junhong, XIA Yangguang, TAO Yuming, YANG Xiaoli. A pilot study of partial denitrification-anammox coupled with MBR process to enhance nitrogen removal[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(12): 102-111. doi: 10.13205/j.hjgc.202512012

Citation:

ZHUANG Yanhua, ZHOU Junhong, XIA Yangguang, TAO Yuming, YANG Xiaoli. A pilot study of partial denitrification-anammox coupled with MBR process to enhance nitrogen removal[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(12): 102-111. doi: 10.13205/j.hjgc.202512012

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A pilot study of partial denitrification-anammox coupled with MBR process to enhance nitrogen removal

doi: 10.13205/j.hjgc.202512012

1. Nanjing Water Supply and Drainage Engineering Design Institute Co., Ltd., Nanjing 210036, China;
2. School of Civil Engineering, Southeast University, Nanjing 211189, China

Received Date: 2024-11-18
Accepted Date: 2025-01-08
Rev Recd Date: 2024-12-21

Available Online: 2026-01-09

Abstract

Abstract

Aiming at the problems of large carbon demand and high energy consumption of the traditional wastewater treatment process， this study constructed a pilot plant of SPDA-MBR. The influent was prepared using real urban wastewater to investigate the denitrification effect of the SPDA-MBR process on urban wastewater and analyze its mechanism. The results indicated that， under the operational conditions of 17.8 to 27.9 ℃ for the partial denitrification reactor （PD tank）， and 33.2 to 36.3 ℃ for the anaerobic ammonium oxidation membrane bioreactor （Anammox-MBR）， the average TN removal rate of the SPDA-MBR process was 89.59%. The nitrogen removal loading of the PD pool and Anammox-MBR pool were 0.13 kg N/（m³·d） and 0.15 kg N/（m³·d）， respectively， contributing 53.94% and 46.06% to the total nitrogen removal. High-throughput sequencing results showed that two partial denitrifying bacteria， Thauera and Thermomonas， were successfully enriched in the PD pool， with relative abundances of 1.7% and 4.01%， respectively. The relative abundance of Candidatus_Jettenia， a typical AnAOB genus， decreased from 13.87% to 6.16%， due to the impact of disturbances before and after the operational period， but the relative abundance of anammox companion genera SM1A02 and SWB02 increased， indicating that the synergistic effect among the complex bacterial species is beneficial to maintaining a higher anammox effect in the urban wastewater treatment process. This further suggests that the key to strengthening the stable and efficient nitrogen removal of urban wastewater by the SPDA-MBR process， is to maintain the synergistic effect of anammox and denitrification and other nitrogen removal pathways.
- SPDA-MBR,
- partial denitrification,
- anammox,
- urban wastewater treatment

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References(30)

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