Study on the advanced nitrogen removal under low temperature by biofilm on weak magnetic carriers

被引：15
作者：
Chen, Sien [1 ]
Yang, Dongli [1 ]
Wang, Qingxin [1 ]
Huang, Xueying [2 ]
Ren, Hongqiang [1 ]
Xu, Ke [1 ]
机构：
[1] Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Peoples R China
[2] Nanjing Univ, Sch Geog & Oceanog Sci, Nanjing 210023, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2022年 / 360卷
关键词：
Weak magnetic carrier; Advanced nitrogen removal; Low temperature; Enzyme activity; Electron transport chain; Microbial community; WASTE-WATER; MICROBIAL COMMUNITY; DENITRIFICATION; FIELD; WETLANDS; SYSTEM; CELL;
D O I：
10.1016/j.biortech.2022.127580
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The advanced nitrogen removal under low temperature is inhibited because of reduction of the microbial activity. Packed bed reactors filled with different magnetic carriers (0, 0.3, 0.6, 0.9 mT) were constructed to enhance advanced denitrification under low temperature (5 degrees C). Results showed that 0.3 and 0.9 mT carriers significantly improved denitrification, indicating the "window" effect. Total nitrogen removals were increased by 6.96% and 8.25%, and NO2- accumulation decreased by 25.70% and 13.90% in 0.3 and 0.9 mT reactors, respectively. Analysis of enzyme activity and electron transport chain showed that 0.3 mT carrier mainly increased NIR activity by improving compound III and cytC abundance while 0.9 mT carrier mainly increased NAR activity by improving compound I and NADH abundance, indicating different pathways. Similar microbial community in 0.3 and 0.9 mT reactors were revealed. Overall, weak magnetic carriers can be used to enhance advanced nitrogen removal under low temperature.
引用
收藏
页数：10
相关论文
共 49 条
[11]   Effects of an external magnetic field on microbial functional genes and metabolism of activated sludge based on metagenomic sequencing [J].
Geng, Shuying ;
Fu, Weizhang ;
Chen, Weifeng ;
Zheng, Shulian ;
Gao, Qi ;
Wang, Jing ;
Ge, Xiaohong .
SCIENTIFIC REPORTS, 2020, 10 (01)
[12]   Start-up and operation of an aerobic granular sludge system under low working temperature inoculated with cold-adapted activated sludge from Finland [J].
Gonzalez-Martinez, Alejandro ;
Munoz-Palazon, Barbara ;
Rodriguez-Sanchez, Alejandro ;
Maza-Marquez, Paula ;
Mikola, Anna ;
Gonzalez-Lopez, Jesus ;
Vahala, Riku .
BIORESOURCE TECHNOLOGY, 2017, 239 :180-189
[13]   Enhancement of denitrification in biofilters by immobilized biochar under low-temperature stress [J].
Guo, Fucheng ;
Xu, Fei ;
Cai, Ran ;
Li, Dexiang ;
Xu, Qinyuan ;
Yang, Xiangyu ;
Wu, Zhengsong ;
Wang, Yubo ;
He, Qiang ;
Ao, Lianggen ;
Vymazal, Jan ;
Chen, Yi .
BIORESOURCE TECHNOLOGY, 2022, 347
[14]   Solid-phase denitrification in high salinity and low-temperature wastewater treatment [J].
Han, Fei ;
Li, Xuan ;
Zhang, Mengru ;
Liu, Zhe ;
Han, Yufei ;
Li, Qian ;
Zhou, Weizhi .
BIORESOURCE TECHNOLOGY, 2021, 341
[15]   Revealing the effects of static magnetic field on the anoxic/oxic sequencing batch reactor from the perspective of electron transport and microbial community shifts [J].
Hu, Bo ;
Gu, Xin ;
Wang, Yilin ;
Leng, Juntong ;
Zhang, Kai ;
Zhao, Jianqiang ;
Wu, Pei ;
Li, Xiaoling ;
Wan, Chengjie ;
Xu, Jingtong .
BIORESOURCE TECHNOLOGY, 2022, 345
[16]   Bio-denitrification performance enhanced by graphene-facilitated iron acquisition [J].
Jiang, Meng ;
Feng, Leiyu ;
Zheng, Xiong ;
Chen, Yinguang .
WATER RESEARCH, 2020, 180
[17]   The Ecology of Acidobacteria: Moving beyond Genes and Genomes [J].
Kielak, Anna M. ;
Barreto, Cristine C. ;
Kowalchuk, George A. ;
van Veen, Johannes A. ;
Kuramae, Eiko E. .
FRONTIERS IN MICROBIOLOGY, 2016, 7
[18]  
Kralova S., 2021, FRONT MICROBIOL, V12
[19]   Impact of a static magnetic field on biodegradation of wastewater compounds and bacteria recombination [J].
Lebkowska, Maria ;
Rutkowska-Narozniak, Anna ;
Pajor, Elzbieta ;
Tabernacka, Agnieszka ;
Zaleska-Radziwill, Monika .
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2018, 25 (23) :22571-22583
[20]   Novel magnetic coupling constructed wetland for nitrogen removal: Enhancing performance and responses of plants and microbial communities [J].
Li, Mengqi ;
Zhang, Jian ;
Liang, Shuang ;
Li, Ming ;
Wu, Haiming .
SCIENCE OF THE TOTAL ENVIRONMENT, 2022, 819
12345