The influence of solid retention time on IFAS-MBR systems: analysis of system behavior

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Abstract

A University of Cape Town Integrated Fixed-Film Activated Sludge Membrane Bioreactor (UCT-IFAS-MBR) pilot plant was operated at different values of the sludge retention time (SRT). Three SRTs were investigated at different durations: indefinitely, 30 and 15 days. The organic carbon, nitrogen and phosphorus removal, kinetic/stoichiometric parameters, membrane fouling tendency and sludge filtration properties were assessed. The findings showed that by decreasing the SRT, the pilot plant could maintain excellent carbon removal efficiencies throughout the experiments. In contrast, the biological carbon removal showed a slight nitrification and was slightly affected by the decrease of the SRT, showing high performance (approximately 91%, on average). Thus, the biofilm might have helped sustain the nitrification throughout the experiments. The average phosphorus removal performance increased slightly with a decrease in SRT, achieving the maximum efficiency (61.5%) at a SRT of 15 days. After a 30-day SRT, an increase in resistance due to pore blocking and a general worsening of the membrane filtration properties occurred.
Lingua originaleEnglish
pagine (da-a)1-13
Numero di pagine13
RivistaEnvironmental Technology
Stato di pubblicazionePublished - 2018

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systems analysis
Systems analysis
sludge
Nitrification
Pilot plants
Phosphorus
Carbon
Membranes
Membrane fouling
membrane
Biofilms
Organic carbon
Bioreactors
nitrification
Kinetic parameters
Nitrogen
phosphorus
Experiments
carbon
fouling

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal

Cita questo

@article{7a48903667894a50bcb277592ab98c0c,
title = "The influence of solid retention time on IFAS-MBR systems: analysis of system behavior",
abstract = "A University of Cape Town Integrated Fixed-Film Activated Sludge Membrane Bioreactor (UCT-IFAS-MBR) pilot plant was operated at different values of the sludge retention time (SRT). Three SRTs were investigated at different durations: indefinitely, 30 and 15 days. The organic carbon, nitrogen and phosphorus removal, kinetic/stoichiometric parameters, membrane fouling tendency and sludge filtration properties were assessed. The findings showed that by decreasing the SRT, the pilot plant could maintain excellent carbon removal efficiencies throughout the experiments. In contrast, the biological carbon removal showed a slight nitrification and was slightly affected by the decrease of the SRT, showing high performance (approximately 91{\%}, on average). Thus, the biofilm might have helped sustain the nitrification throughout the experiments. The average phosphorus removal performance increased slightly with a decrease in SRT, achieving the maximum efficiency (61.5{\%}) at a SRT of 15 days. After a 30-day SRT, an increase in resistance due to pore blocking and a general worsening of the membrane filtration properties occurred.",
keywords = "Environmental Chemistry, University of Cape Town pilot plant, Waste Management and Disposal, Water Science and Technology, biofilm, membrane fouling, nutrients removal, sludge retention time",
author = "{Di Trapani}, Daniele and Alida Cosenza and Giorgio Mannina and Gaspare Viviani and Marco Capodici",
year = "2018",
language = "English",
pages = "1--13",
journal = "Environmental Technology (United Kingdom)",
issn = "0959-3330",
publisher = "Taylor and Francis Ltd.",

}

TY - JOUR

T1 - The influence of solid retention time on IFAS-MBR systems: analysis of system behavior

AU - Di Trapani, Daniele

AU - Cosenza, Alida

AU - Mannina, Giorgio

AU - Viviani, Gaspare

AU - Capodici, Marco

PY - 2018

Y1 - 2018

N2 - A University of Cape Town Integrated Fixed-Film Activated Sludge Membrane Bioreactor (UCT-IFAS-MBR) pilot plant was operated at different values of the sludge retention time (SRT). Three SRTs were investigated at different durations: indefinitely, 30 and 15 days. The organic carbon, nitrogen and phosphorus removal, kinetic/stoichiometric parameters, membrane fouling tendency and sludge filtration properties were assessed. The findings showed that by decreasing the SRT, the pilot plant could maintain excellent carbon removal efficiencies throughout the experiments. In contrast, the biological carbon removal showed a slight nitrification and was slightly affected by the decrease of the SRT, showing high performance (approximately 91%, on average). Thus, the biofilm might have helped sustain the nitrification throughout the experiments. The average phosphorus removal performance increased slightly with a decrease in SRT, achieving the maximum efficiency (61.5%) at a SRT of 15 days. After a 30-day SRT, an increase in resistance due to pore blocking and a general worsening of the membrane filtration properties occurred.

AB - A University of Cape Town Integrated Fixed-Film Activated Sludge Membrane Bioreactor (UCT-IFAS-MBR) pilot plant was operated at different values of the sludge retention time (SRT). Three SRTs were investigated at different durations: indefinitely, 30 and 15 days. The organic carbon, nitrogen and phosphorus removal, kinetic/stoichiometric parameters, membrane fouling tendency and sludge filtration properties were assessed. The findings showed that by decreasing the SRT, the pilot plant could maintain excellent carbon removal efficiencies throughout the experiments. In contrast, the biological carbon removal showed a slight nitrification and was slightly affected by the decrease of the SRT, showing high performance (approximately 91%, on average). Thus, the biofilm might have helped sustain the nitrification throughout the experiments. The average phosphorus removal performance increased slightly with a decrease in SRT, achieving the maximum efficiency (61.5%) at a SRT of 15 days. After a 30-day SRT, an increase in resistance due to pore blocking and a general worsening of the membrane filtration properties occurred.

KW - Environmental Chemistry

KW - University of Cape Town pilot plant

KW - Waste Management and Disposal

KW - Water Science and Technology

KW - biofilm

KW - membrane fouling

KW - nutrients removal

KW - sludge retention time

UR - http://hdl.handle.net/10447/298019

UR - http://www.tandf.co.uk/journals/titles/09593330.asp

M3 - Article

SP - 1

EP - 13

JO - Environmental Technology (United Kingdom)

JF - Environmental Technology (United Kingdom)

SN - 0959-3330

ER -