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Author del Rio, A.V.; Pichel, A.; Fernandez-Gonzalez, N.; Pedrouso, A.; Fra-Vazquez, A.; Morales, N.; Mendez, R.; Campos, J.L.; Mosquera-Corral, A. pdf  doi
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  Title Performance and microbial features of the partial nitritation-anammox process treating fish canning wastewater with variable salt concentrations Type Journal Article
  Year 2018 Publication Journal Of Environmental Management Abbreviated Journal J. Environ. Manage.  
  Volume 208 Issue Pages 112-121  
  Keywords Autotrophic; Denitrification; Fish canning; Granule; Nitrogen  
  Abstract The partial nitritation-anammox (PN-AMX) process applied to wastewaters with high NaCl concentration was studied until now using simulated media, without considering the effect of organic matter concentration and the shift in microbial populations. This research work presents results on the application of this process to the treatment of saline industrial wastewater. Obtained results indicated that the PN-AMX process has the capability to recover its initial activity after a sudden/acute salt inhibition event (up to 16 g NaCl/L). With a progressive salt concentration increase for 150 days, the PN-AMX process was able to remove the 80% of the nitrogen at 7-9 g NaCl/L. The microbiological data indicated that NaCl and ammonia concentrations and temperature are important factors shaping PN-AMX communities. Thus, the NOB abundance (Nitrospira) decreases with the increase of the salt concentration, while heterotrophic denitrifiers are able to outcompete anammox aftet a peak of organic matter in the feeding. (C) 2017 Elsevier Ltd. All rights reserved.  
  Address [Val del Rio, Angeles; Pichel, Andres; Fernandez-Gonzalez, Nuria; Pedrouso, Alba; Fra-Vazquez, Andrea; Mendez, Ramon; Mosquera-Corral, Anuska] Univ Santiago de Compostela, Sch Engn, Dept Chem Engn, E-15705 Santiago De Compostela, Spain, Email: mangeles.val@usc.es;  
  Corporate Author Thesis  
  Publisher Academic Press Ltd- Elsevier Science Ltd Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0301-4797 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000424074000011 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 818  
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Author Morales, N.; del Rio, A.V.; Vazquez-Padin, J.R.; Gutierrez, R.; Fernandez-Gonzalez, R.; Icaram, P.; Rogalla, F.; Campos, J.L.; Mendez, R.; Mosquera-Corral, A. pdf  doi
openurl 
  Title Influence of dissolved oxygen concentration on the start-up of the anammox-based process: ELAN (R) Type Journal Article
  Year 2015 Publication Water Science And Technology Abbreviated Journal Water Sci. Technol.  
  Volume 72 Issue 4 Pages 520-527  
  Keywords anammox; autotrophic nitrogen removal; dissolved oxygen; granule; oxygen microprofiles  
  Abstract The anammox-based process ELAN (R) was started-up in two different sequencing batch reactor (SBR) pilot plant reactors treating municipal anaerobic digester supernatant. The main difference in the operation of both reactors was the dissolved oxygen (DO) concentration in the bulk liquid. SBR-1 was started at a DO value of 0.4 mg O-2/L whereas SBR-2 was started at DO values of 3.0 mg O-2/L. Despite both reactors working at a nitrogen removal rate of around 0.6 g N/(L d), in SBR-1, granules represented only a small fraction of the total biomass and reached a diameter of 1.1 mm after 7 months of operation, while in SBR-2 the biomass was mainly composed of granules with an average diameter of 3.2 mm after the same operational period. Oxygen microelectrode profiling revealed that granules from SBR-2 where only fully penetrated by oxygen with DO concentrations of 8 mg O2/L while granules from SBR-1 were already oxygen penetrated at DO concentrations of 1 mg O2/L. In this way granules from SBR-2 performed better due to the thick layer of ammonia oxidizing bacteria, which accounted for up to 20% of all the microbial populations, which protected the anammox bacteria from non-suitable liquid media conditions.  
  Address [Morales, N.; Vazquez-Padin, J. R.; Gutierrez, R.; Fernandez-Gonzalez, R.; Icaram, P.; Rogalla, F.] Guillarei WWTP, FCC Aqualia, E-36720 Tui, Spain, Email: nicolas.morales.pereira@fcc.es  
  Corporate Author Thesis  
  Publisher Iwa Publishing Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0273-1223 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000359387200003 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 518  
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Author Pedrouso, A.; Aiartza, I.; Morales, N.; Vazquez-Padin, J.R.; Rogalla, F.; Campos, J.L.; Mosquera-Corral, A.; del Rio, A.V. pdf  doi
openurl 
  Title Pilot-scale ELAN (R) process applied to treat primary settled urban wastewater at low temperature via partial nitritation-anammox processes Type Journal Article
  Year 2018 Publication Separation And Purification Technology Abbreviated Journal Sep. Purif. Technol.  
  Volume 200 Issue Pages 94-101  
  Keywords Ananunox; Autotrophic nitrogen removal; Granular biomass; Mainstream; Partial nitritation  
  Abstract A single stage partial nitritation and anammox granular pilot scale reactor (600 L) was operated to treat primary settled sewage in an urban wastewater treatment plant. The fed wastewater contained low total nitrogen concentrations of 6-25 mg TN/L and the system operated without temperature control ranging from 18 to 12 degrees C. A control strategy, based on the pH value, was applied to stop the aeration supply. The pH set-point was fixed at 6.0 and allowed obtaining a total nitrogen removal efficiency approximately of 50% treating a load of 67 mg TN/(L.d) without the addition of any chemicals. Although nitrite oxidizing bacteria were present in the inoculated sludge, when the pH-based control was implemented (day 30) the ammonium oxidation was favored compared to the nitrite oxidation activity. Then, the system operated stable the rest of the operational period (days 30-94) despite the presence of organic matter in the wastewater and the high variability of nitrogen load and temperature during the operation. Nitrogen was autotrophically removed accomplishing the stringent discharge limits (10 mg TN/L) and nitrate concentrations in the effluent lower than 3 mg NO3--N/L. Both biomass concentration and granules size increased during the operational period indicating the growth of the biomass inside the reactor and therefore the potential treatment capacity.  
  Address [Pedrouso, Alba; Aiartza, Irati; Mosquera-Corral, Anuska; Val del Rio, Angeles] Univ Santiago de Compostela, Sch Engn, Dept Chem Engn, E-15705 Santiago De Compostela, Spain, Email: alba.pedrouso@usc.es;  
  Corporate Author Thesis  
  Publisher Elsevier Science Bv Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1383-5866 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000431157200012 Approved no  
  Call Number UAI @ eduardo.moreno @ Serial 855  
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