Minimization of nitrous oxide emission from CASS process treating low carbon source domestic wastewater: Effect of feeding strategy and aeration rate

被引：43
作者：
Liang, Weihao [1 ]
Yu, Chao [1 ]
Ren, Hongqiang [1 ]
Geng, Jinju [1 ]
Ding, Lili [1 ]
Xu, Ke [1 ]
机构：
[1] Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2015年 / 198卷
关键词：
Nitrous oxide; Feeding strategy; Aeration rate; Cyclic Activated Sludge System; Microbial community; SEQUENCING BATCH REACTOR; ACTIVATED-SLUDGE; N2O PRODUCTION; NITRIC-OXIDE; MICROBIAL COMMUNITY; OXIDIZING BACTERIA; DENITRIFICATION; NITRIFICATION; NITRITATION; GENERATION;
D O I：
10.1016/j.biortech.2015.08.075
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Nitrous oxide (N2O) emission during wastewater treatment can be mitigated by improving operational conditions, e. g., organic carbon supply and dissolved oxygen. To evaluate the control parameters for N2O emission in the low carbon source domestic wastewater treatment process, N2O emissions from Cyclic Activated Sludge System (CASS) under different feeding strategies and aeration rates were investigated. Results showed that continuous feeding enhanced nitrogen removal and reduced N2O emission compared to batch feeding, while a higher aeration rate led to less N2O emission. N2O was mainly produced during non-aeration phases in batch feeding CASS and the amount of N2O generated from denitrification decreased under continuous feeding, indicating that carbon source in the continuous influent relieved the electron competition between denitrification reductases during non-aeration phase. Moreover, taxonomic analysis based on high-throughput 16S rRNA gene sequencing revealed higher abundance of denitrifying bacteria, especially N2O-reducing bacteria in continuous feeding CASS. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：172 / 180
页数：9
相关论文
共 33 条
  • [1] N2O Emissions from Activated Sludge Processes, 2008-2009: Results of a National Monitoring Survey in the United States
    Ahn, Joon Ho
    Kim, Sungpyo
    Park, Hongkeun
    Rahm, Brian
    Pagilla, Krishna
    Chandran, Kartik
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2010, 44 (12) : 4505 - 4511
  • [2] [Anonymous], 2005, Standard methods for the examination of water and waste- water
  • [3] N2O Production by Nitrifying Biomass Under Anoxic and Aerobic Conditions
    Campos, J. L.
    Arrojo, B.
    Vazquez-Padin, J. R.
    Mosquera-Corral, A.
    Mendez, R.
    [J]. APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY, 2009, 152 (02) : 189 - 198
  • [4] Biological nutrient removal with low nitrous oxide generation by cancelling the anaerobic phase and extending the idle phase in a sequencing batch reactor
    Chen, Yinguang
    Wang, Dongbo
    Zheng, Xiong
    Li, Xiang
    Feng, Leiyu
    Chen, Hong
    [J]. CHEMOSPHERE, 2014, 109 : 56 - 63
  • [5] Strategies to mitigate N2O emissions from biological nitrogen removal systems
    Desloover, Joachim
    Vlaeminck, Siegfried E.
    Clauwaert, Peter
    Verstraete, Willy
    Boon, Nico
    [J]. CURRENT OPINION IN BIOTECHNOLOGY, 2012, 23 (03) : 474 - 482
  • [6] Anoxic phases are the main N2O contributor in partial nitritation reactors treating high nitrogen loads with alternate aeration
    Gabarro, J.
    Gonzalez-Carcamo, P.
    Ruscalleda, M.
    Ganigue, R.
    Gich, F.
    Balaguer, M. D.
    Colprim, J.
    [J]. BIORESOURCE TECHNOLOGY, 2014, 163 : 92 - 99
  • [7] Investigation of an acetate-fed denitrifying microbial community by stable isotope probing, full-cycle rRNA analysis, and fluorescent in situ hybridization-microautoradiography
    Ginige, MP
    Keller, J
    Blackall, LL
    [J]. APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 2005, 71 (12) : 8683 - 8691
  • [8] Effect of PHB and oxygen uptake rate on nitrous oxide emission during simultaneous nitrification denitrification process
    Jia, Wenlin
    Zhang, Jian
    Xie, Huijun
    Yan, Yujie
    Wang, Jinhe
    Zhao, Yongxin
    Xu, Xiaoli
    [J]. BIORESOURCE TECHNOLOGY, 2012, 113 : 232 - 238
  • [9] Dynamics of nitric oxide and nitrous oxide emission during full-scale reject water treatment
    Kampschreur, Marlies J.
    van der Star, Wouter R. L.
    Wielders, Hubert A.
    Mulder, Jan Willem
    Jetten, Mike S. M.
    van Loosdrecht, Mark C. M.
    [J]. WATER RESEARCH, 2008, 42 (03) : 812 - 826
  • [10] Effect of dynamic process conditions on nitrogen oxides emission from a nitrifying culture
    Kampschreur, Marlies J.
    Tan, Nico C. G.
    Kleerebezem, Robbert
    Picioreanu, Cristian
    Jetten, Mike S. M.
    Van Loosdrecht, Mark C. M.
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2008, 42 (02) : 429 - 435
1234