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Article

Nitrogen Removal Efficiency and Microbial Community Analysis of a High-Efficiency Honeycomb Fixed-Bed Bioreactor

by 1,2,3,4,5, 3, 4,5, 1,2, 4,5,* and 3,*
1
College of Resources and Environment Science, Xinjiang University, Urumqi 830046, China
2
Key Laboratory of Oasis Ecology of Ministry of Education, Xinjiang University, Urumqi 830046, China
3
School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi’an 710021, China
4
State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
5
University of Chinese Academy of Sciences, Beijing 100049, China
*
Authors to whom correspondence should be addressed.
Water 2020, 12(6), 1832; https://doi.org/10.3390/w12061832
Received: 18 May 2020 / Revised: 19 June 2020 / Accepted: 23 June 2020 / Published: 26 June 2020
(This article belongs to the Section Wastewater Treatment and Reuse)
Based on the concept of microbial community multi-processing in integrated spatial bacterial succession (ISBS), this study constructs a highly efficient cellular fixed-bed bioreactor that follows the growth of biological flora in the wastewater treatment process. The reactor is organically partitioned based on synergistic laws and in accordance with environmental and microbial metabolic changes, and sewage is subjected to unitized and specialized biological treatment under direct current conditions. The results show that the ISBS reactor exhibits stable nitrogen removal performance under a low-carbon source. Compared with traditional sewage biochemical treatment technology, the microbial concentration is increased by 2–3 times and even up to 12 times, and the ammonia nitrogen removal rate is maintained at 99%. The removal rate reaches 90% (hydraulic retention time of 14 h). High-throughput sequencing analysis based on 16S rDNA reveals the microbial community structure succession at different depths of the same section of the reactor. The microbial community is rich under the influence of environmental factors and exhibits different responses. The intervals vary. An analysis of the microbial community function explains why the ISBS reactor has high nitrogen removal efficiency. View Full-Text
Keywords: cellular fixed bed bioreactor; ammonia oxidation; microbial community structure; biofilm cellular fixed bed bioreactor; ammonia oxidation; microbial community structure; biofilm
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MDPI and ACS Style

Xu, J.; Zhu, C.; Liu, Y.; Lv, G.; Tian, C.; Ma, H. Nitrogen Removal Efficiency and Microbial Community Analysis of a High-Efficiency Honeycomb Fixed-Bed Bioreactor. Water 2020, 12, 1832. https://doi.org/10.3390/w12061832

AMA Style

Xu J, Zhu C, Liu Y, Lv G, Tian C, Ma H. Nitrogen Removal Efficiency and Microbial Community Analysis of a High-Efficiency Honeycomb Fixed-Bed Bioreactor. Water. 2020; 12(6):1832. https://doi.org/10.3390/w12061832

Chicago/Turabian Style

Xu, Jie, Chao Zhu, Yi Liu, Guanghui Lv, Changyan Tian, and Hongrui Ma. 2020. "Nitrogen Removal Efficiency and Microbial Community Analysis of a High-Efficiency Honeycomb Fixed-Bed Bioreactor" Water 12, no. 6: 1832. https://doi.org/10.3390/w12061832

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