PMID- 33647672
OWN - NLM
STAT- MEDLINE
DCOM- 20210330
LR  - 20221207
IS  - 1095-8630 (Electronic)
IS  - 0301-4797 (Linking)
VI  - 286
DP  - 2021 May 15
TI  - The prediction of partial-nitrification-anammox performance in real industrial 
      wastewater based on granular size.
PG  - 112255
LID - S0301-4797(21)00317-0 [pii]
LID - 10.1016/j.jenvman.2021.112255 [doi]
AB  - To date, the partial nitrification-Anammox (PN-A) granular sludge size has been 
      exclusively analyzed in synthetic substrates. In this work, different ranges of 
      granular size of PN-A sludge were studied at low oxygen concentration using real 
      industrial wastewater as, well as a synthetic substrate. The granular sludge was 
      characterized by the specific nitrification activity (SNA), specific anammox 
      activity (SAA), and granule sedimentation rate. The relative abundance of the 
      bacterial consortium was assessed for each range of diameters through the 
      fluorescence in situ hybridization (FISH) technique. SNA exhibits a direct 
      association with the specific surface of granules, which proves the importance of 
      the outer layer in the nitrification process. Even more critical, the flocculent 
      sludge allowed the stability of the nitrifying activity. The SAA showed different 
      performances faced the real industrial and synthetic substrates. With the 
      synthetic substrate, the SAA decreased at higher diameter ranges, whereas with 
      the industrial substrate, the SAA increased at higher diameter ranges. This 
      situation is explained by the oxygen protection in the sludge maintained with 
      industrial wastewater. The relative abundance of heterotrophic bacteria increased 
      from 9.6 to 22%, due to the presence of organic matter in the industrial 
      substrate. The granular sedimentation rate increased with the diameter of the 
      granules with a linear correlation (R(2) > 0.98). Thus, granular sizes can be 
      selected through sedimentation rate control. A linear correlation between SAA and 
      granular sludge diameter ranges was observed. With this correlation, an error of 
      less than 11% in the prediction of SAA was achieved. The use of diameter 
      measurement and granular sedimentation rate as routine techniques could 
      contribute to the control and start-up of PN-A reactors. In the same sense, 
      organic matter present in defined concentrations, can be beneficial for the 
      granular sludge stability, and thus, for nitrogen removal.
CI  - Copyright (c) 2021 Elsevier Ltd. All rights reserved.
FAU - Guzman-Fierro, Victor
AU  - Guzman-Fierro V
AD  - Department of Chemical Engineering, Faculty of Engineering, University of 
      Concepcion, Concepcion, Chile.
FAU - Sanhueza, Jose
AU  - Sanhueza J
AD  - Department of Chemical Engineering, Faculty of Engineering, University of 
      Concepcion, Concepcion, Chile.
FAU - Arriagada, Constanza
AU  - Arriagada C
AD  - Department of Chemical Engineering, Faculty of Engineering, University of 
      Concepcion, Concepcion, Chile.
FAU - Pereira, Luis
AU  - Pereira L
AD  - Department of Microbiology, Faculty of Biological Sciences, University of 
      Concepcion, Concepcion, Chile.
FAU - Campos, Victor
AU  - Campos V
AD  - Department of Microbiology, Faculty of Biological Sciences, University of 
      Concepcion, Concepcion, Chile.
FAU - Gallardo, Juan Jose
AU  - Gallardo JJ
AD  - Department of Chemical Engineering, Faculty of Engineering, University of 
      Concepcion, Concepcion, Chile; Department of Chemical Engineering, Higher 
      Engineering School, University of Almeria, Spain.
FAU - Roeckel, Marlene
AU  - Roeckel M
AD  - Department of Chemical Engineering, Faculty of Engineering, University of 
      Concepcion, Concepcion, Chile. Electronic address: mroeckel@udec.cl.
LA  - eng
PT  - Journal Article
DEP - 20210227
PL  - England
TA  - J Environ Manage
JT  - Journal of environmental management
JID - 0401664
RN  - 0 (Sewage)
RN  - 0 (Waste Water)
RN  - N762921K75 (Nitrogen)
SB  - IM
MH  - Bioreactors
MH  - In Situ Hybridization, Fluorescence
MH  - *Nitrification
MH  - Nitrogen
MH  - Oxidation-Reduction
MH  - Sewage
MH  - *Wastewater
OTO - NOTNLM
OT  - Anammox
OT  - Diameter
OT  - Granular
OT  - Size
OT  - Sludge
EDAT- 2021/03/02 06:00
MHDA- 2021/03/31 06:00
CRDT- 2021/03/01 20:15
PHST- 2020/09/07 00:00 [received]
PHST- 2020/12/28 00:00 [revised]
PHST- 2021/02/20 00:00 [accepted]
PHST- 2021/03/02 06:00 [pubmed]
PHST- 2021/03/31 06:00 [medline]
PHST- 2021/03/01 20:15 [entrez]
AID - S0301-4797(21)00317-0 [pii]
AID - 10.1016/j.jenvman.2021.112255 [doi]
PST - ppublish
SO  - J Environ Manage. 2021 May 15;286:112255. doi: 10.1016/j.jenvman.2021.112255. 
      Epub 2021 Feb 27.