Achievement of partial nitrification under different carbon-to-nitrogen ratio and ammonia loading rate for the co-treatment of landfill leachate with municipal wastewater

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Abstract

Partial nitrification (PN) is a technically and economically effective solution for the treatment of wastewater featuring low C/N ratio, allowing to achieve approximately 25% energy saving and 40% carbon source for denitrification. This study investigated the effect of different carbon to nitrogen ratio (C/N) and ammonia loading rate (ALR) on PN performances in a sequencing batch reactor (SBR) treating landfill leachate with municipal wastewater. The aim was to find an optimum range for C/N and ALR to maximize PN performances. Results demonstrated that a proper balancing between ALR and C/N is crucial to achieve high PN efficiency. The results highlighted the existence of an optimum range for ALR and C/N of approximately 0.30-0.50 kg NH4-N m-3d-1 and 2-4. Although complete suppression of NOB was not achieved at these values, a predominance of nitrite (125 mg L-1) to nitrate (50 mg L-1) was observed. The results demonstrated the achievement of PN even at high C/N (4) but, on the other hand, C/N higher than 6 were not favorable to autotrophic growth. C/N significantly lower than 4 caused a stress condition for the biomass, leading to an excess in SMP production. Therefore, the operational parameters as well as the co-treatment ratio should be adjusted in order to operate the system under specific ALR (0.30-0.50 kg NH4-N m-3 d-1) and C/N (2-4).
Lingua originaleEnglish
Numero di pagine9
RivistaBiochemical Engineering Journal
Volume149
Stato di pubblicazionePublished - 2019

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Chemical Water Pollutants
Nitrification
Waste Water
Land fill
Ammonia
nitrification
Wastewater
Nitrogen
Carbon
ammonia
wastewater
nitrogen
carbon
Autotrophic Processes
Denitrification
Dilatation and Curettage
Batch reactors
Nitrites
Nitrates
Biomass

All Science Journal Classification (ASJC) codes

  • Ecological Modelling
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution
  • Biotechnology
  • Environmental Engineering
  • Bioengineering
  • Biomedical Engineering

Cita questo

@article{7d856f9793e840e3967d38cb8cea8dcf,
title = "Achievement of partial nitrification under different carbon-to-nitrogen ratio and ammonia loading rate for the co-treatment of landfill leachate with municipal wastewater",
abstract = "Partial nitrification (PN) is a technically and economically effective solution for the treatment of wastewater featuring low C/N ratio, allowing to achieve approximately 25{\%} energy saving and 40{\%} carbon source for denitrification. This study investigated the effect of different carbon to nitrogen ratio (C/N) and ammonia loading rate (ALR) on PN performances in a sequencing batch reactor (SBR) treating landfill leachate with municipal wastewater. The aim was to find an optimum range for C/N and ALR to maximize PN performances. Results demonstrated that a proper balancing between ALR and C/N is crucial to achieve high PN efficiency. The results highlighted the existence of an optimum range for ALR and C/N of approximately 0.30-0.50 kg NH4-N m-3d-1 and 2-4. Although complete suppression of NOB was not achieved at these values, a predominance of nitrite (125 mg L-1) to nitrate (50 mg L-1) was observed. The results demonstrated the achievement of PN even at high C/N (4) but, on the other hand, C/N higher than 6 were not favorable to autotrophic growth. C/N significantly lower than 4 caused a stress condition for the biomass, leading to an excess in SMP production. Therefore, the operational parameters as well as the co-treatment ratio should be adjusted in order to operate the system under specific ALR (0.30-0.50 kg NH4-N m-3 d-1) and C/N (2-4).",
author = "Gaspare Viviani and Marco Capodici and {Di Trapani}, Daniele and Corsino, {Santo Fabio} and {Di Pippo}, Francesca and Valter Tandoi",
year = "2019",
language = "English",
volume = "149",
journal = "Biochemical Engineering Journal",
issn = "1369-703X",
publisher = "Elsevier",

}

TY - JOUR

T1 - Achievement of partial nitrification under different carbon-to-nitrogen ratio and ammonia loading rate for the co-treatment of landfill leachate with municipal wastewater

AU - Viviani, Gaspare

AU - Capodici, Marco

AU - Di Trapani, Daniele

AU - Corsino, Santo Fabio

AU - Di Pippo, Francesca

AU - Tandoi, Valter

PY - 2019

Y1 - 2019

N2 - Partial nitrification (PN) is a technically and economically effective solution for the treatment of wastewater featuring low C/N ratio, allowing to achieve approximately 25% energy saving and 40% carbon source for denitrification. This study investigated the effect of different carbon to nitrogen ratio (C/N) and ammonia loading rate (ALR) on PN performances in a sequencing batch reactor (SBR) treating landfill leachate with municipal wastewater. The aim was to find an optimum range for C/N and ALR to maximize PN performances. Results demonstrated that a proper balancing between ALR and C/N is crucial to achieve high PN efficiency. The results highlighted the existence of an optimum range for ALR and C/N of approximately 0.30-0.50 kg NH4-N m-3d-1 and 2-4. Although complete suppression of NOB was not achieved at these values, a predominance of nitrite (125 mg L-1) to nitrate (50 mg L-1) was observed. The results demonstrated the achievement of PN even at high C/N (4) but, on the other hand, C/N higher than 6 were not favorable to autotrophic growth. C/N significantly lower than 4 caused a stress condition for the biomass, leading to an excess in SMP production. Therefore, the operational parameters as well as the co-treatment ratio should be adjusted in order to operate the system under specific ALR (0.30-0.50 kg NH4-N m-3 d-1) and C/N (2-4).

AB - Partial nitrification (PN) is a technically and economically effective solution for the treatment of wastewater featuring low C/N ratio, allowing to achieve approximately 25% energy saving and 40% carbon source for denitrification. This study investigated the effect of different carbon to nitrogen ratio (C/N) and ammonia loading rate (ALR) on PN performances in a sequencing batch reactor (SBR) treating landfill leachate with municipal wastewater. The aim was to find an optimum range for C/N and ALR to maximize PN performances. Results demonstrated that a proper balancing between ALR and C/N is crucial to achieve high PN efficiency. The results highlighted the existence of an optimum range for ALR and C/N of approximately 0.30-0.50 kg NH4-N m-3d-1 and 2-4. Although complete suppression of NOB was not achieved at these values, a predominance of nitrite (125 mg L-1) to nitrate (50 mg L-1) was observed. The results demonstrated the achievement of PN even at high C/N (4) but, on the other hand, C/N higher than 6 were not favorable to autotrophic growth. C/N significantly lower than 4 caused a stress condition for the biomass, leading to an excess in SMP production. Therefore, the operational parameters as well as the co-treatment ratio should be adjusted in order to operate the system under specific ALR (0.30-0.50 kg NH4-N m-3 d-1) and C/N (2-4).

UR - http://hdl.handle.net/10447/380865

M3 - Article

VL - 149

JO - Biochemical Engineering Journal

JF - Biochemical Engineering Journal

SN - 1369-703X

ER -