PMID- 26921710
OWN - NLM
STAT- MEDLINE
DCOM- 20170119
LR  - 20221207
IS  - 1879-2448 (Electronic)
IS  - 0043-1354 (Linking)
VI  - 94
DP  - 2016 May 1
TI  - Nitrogen removal by granular nitritation-anammox in an upflow membrane-aerated 
      biofilm reactor.
PG  - 23-31
LID - S0043-1354(16)30090-2 [pii]
LID - 10.1016/j.watres.2016.02.031 [doi]
AB  - The nitritation-anammox process has been a promising nitrogen removal technology 
      towards sustainable wastewater treatment, but its application in treating 
      domestic wastewater with relatively low ammonium concentrations (mainstream) 
      remains a great challenge. In this study, an innovative lab-scale upflow 
      membrane-aerated biofilm reactor (UMABR) was employed to treat a synthetic 
      wastewater containing 70 mg N L(-1) ammonium. With a DO level at 
      0.6 +/- 0.1 mg O2 L(-1) and HRT of 32 h, the effluent ammonium concentration was 
      4.8 +/- 2.0 mg N L(-1). Increasing the nitrogen loading rate from 52.4 to 
      104.8 g N m(-3) d(-1) with stepwise decreasing HRT from 32 to 16 h resulted in an 
      average TN removal efficiency of 81% without nitrite accumulation. The average 
      observed NO3(-)-N (residue)/NH4(+)-N (consumed) ratio of 8% was below the 
      "theoretical ratio" of 13% and further reduction of nitrate residue needs to be 
      addressed. Fluorescence in situ hybridization (FISH) and high-throughput 
      sequencing analyses showed the coexistence of anammox bacteria and 
      ammonium-oxidizing bacteria (AOB) in both biofilm and granular samples. Anammox 
      bacteria accounted for up to 63.3% of the microbial community of the granules, 
      with Candidatus Jettenia being the distinctly dominant anammox genus. In 
      contrast, the biofilm contained abundant Nitrosomonadaceae (AOB, 33.1%). In 
      addition, the brown-yellow granules exhibited a more balanced community structure 
      with anammox bacteria and AOB accounting for 33.7% and 18.2%, respectively, which 
      may contribute to the long-term operation of single-stage nitritation-anammox 
      process. These results demonstrate that the nitritation-anammox UMABR could 
      potentially be used for nitrogen removal from mainstream in some specific regions 
      with relatively warm temperature.
CI  - Copyright (c) 2016 Elsevier Ltd. All rights reserved.
FAU - Li, Xiaojin
AU  - Li X
AD  - Department of Civil and Environmental Engineering, Virginia Polytechnic Institute 
      and State University, Blacksburg, VA 24061, USA.
FAU - Sun, Shan
AU  - Sun S
AD  - Department of Crop and Soil Environmental Sciences, Virginia Polytechnic 
      Institute and State University, Blacksburg, VA 24061, USA.
FAU - Badgley, Brian D
AU  - Badgley BD
AD  - Department of Crop and Soil Environmental Sciences, Virginia Polytechnic 
      Institute and State University, Blacksburg, VA 24061, USA.
FAU - Sung, Shihwu
AU  - Sung S
AD  - College of Agriculture, Forestry, and Natural Resource Management, University of 
      Hawaii at Hilo, Hilo, HI 96720, USA.
FAU - Zhang, Husen
AU  - Zhang H
AD  - Department of Civil and Environmental Engineering, Virginia Polytechnic Institute 
      and State University, Blacksburg, VA 24061, USA.
FAU - He, Zhen
AU  - He Z
AD  - Department of Civil and Environmental Engineering, Virginia Polytechnic Institute 
      and State University, Blacksburg, VA 24061, USA. Electronic address: 
      zhenhe@vt.edu.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20160213
PL  - England
TA  - Water Res
JT  - Water research
JID - 0105072
RN  - 0 (Ammonium Compounds)
RN  - 0 (DNA, Bacterial)
RN  - 0 (Membranes, Artificial)
RN  - 0 (Nitrates)
RN  - 0 (Waste Water)
RN  - N762921K75 (Nitrogen)
SB  - IM
MH  - Ammonium Compounds/*chemistry
MH  - Bacteria/classification
MH  - Biofilms
MH  - *Bioreactors/microbiology
MH  - DNA, Bacterial/isolation & purification
MH  - Membranes, Artificial
MH  - Nitrates/analysis
MH  - Nitrogen/*chemistry
MH  - Wastewater/*chemistry
MH  - Water Purification/*methods
OTO - NOTNLM
OT  - Biofilm
OT  - Granule
OT  - Low nitrogen strength
OT  - Membrane-aerated
OT  - Microbial community
OT  - Nitritation-anammox
EDAT- 2016/02/28 06:00
MHDA- 2017/01/20 06:00
CRDT- 2016/02/28 06:00
PHST- 2015/10/27 00:00 [received]
PHST- 2016/02/11 00:00 [revised]
PHST- 2016/02/13 00:00 [accepted]
PHST- 2016/02/28 06:00 [entrez]
PHST- 2016/02/28 06:00 [pubmed]
PHST- 2017/01/20 06:00 [medline]
AID - S0043-1354(16)30090-2 [pii]
AID - 10.1016/j.watres.2016.02.031 [doi]
PST - ppublish
SO  - Water Res. 2016 May 1;94:23-31. doi: 10.1016/j.watres.2016.02.031. Epub 2016 Feb 
      13.