A moving bed membrane bioreactor pilot plant for carbon and nutrient removal

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Abstract

The paper reports the main results of an experimental gathering campaign carried out on a moving bed membrane bioreactor pilot plant conceived for carbon and nutrients removal according to a University of Cape Town scheme. Organic carbon, nitrogen and phosphorus removal, biokinetic/stoichiometric constants, membrane fouling tendency and sludge dewaterability have been assessed during experiments. The achieved results showed that pilot plant was able to guarantee very high carbon removal, with average efficiency of 98%. In terms of nitrification, the system showed an excellent performance, with efficiencies higher than 98% for most of the experiments. This result might be related to the presence of biofilm in the aerobic compartment that contributed to sustain the complete nitrification of the influent ammonium. Conversely, the average P removal efficiency was quite moderate, likely due to the increase of the ammonium loading rate that could promote an increased NO3-N recycled from the anoxic to the anaerobic tank, interfering with PAOs activity inside the anaerobic tank. Referring to membrane fouling, the irreversible resistance due to superficial cake deposition was the mechanism that mostly affected the membrane filtration properties. Moreover, it was noticed the increase of the resistance due to pore blocking and a general worsening of the membrane filtration properties. This result could be due to the increase of the EPSBound fraction that could be promoted by biofilm detachment phenomena occurred during experiments.
Lingua originaleEnglish
Pagine1-16
Numero di pagine16
Stato di pubblicazionePublished - 2016

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bioreactor
membrane
carbon
fouling
biofilm
nitrification
ammonium
experiment
organic carbon
sludge
pilot plant
nutrient removal
phosphorus
nitrogen
removal

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title = "A moving bed membrane bioreactor pilot plant for carbon and nutrient removal",
abstract = "The paper reports the main results of an experimental gathering campaign carried out on a moving bed membrane bioreactor pilot plant conceived for carbon and nutrients removal according to a University of Cape Town scheme. Organic carbon, nitrogen and phosphorus removal, biokinetic/stoichiometric constants, membrane fouling tendency and sludge dewaterability have been assessed during experiments. The achieved results showed that pilot plant was able to guarantee very high carbon removal, with average efficiency of 98{\%}. In terms of nitrification, the system showed an excellent performance, with efficiencies higher than 98{\%} for most of the experiments. This result might be related to the presence of biofilm in the aerobic compartment that contributed to sustain the complete nitrification of the influent ammonium. Conversely, the average P removal efficiency was quite moderate, likely due to the increase of the ammonium loading rate that could promote an increased NO3-N recycled from the anoxic to the anaerobic tank, interfering with PAOs activity inside the anaerobic tank. Referring to membrane fouling, the irreversible resistance due to superficial cake deposition was the mechanism that mostly affected the membrane filtration properties. Moreover, it was noticed the increase of the resistance due to pore blocking and a general worsening of the membrane filtration properties. This result could be due to the increase of the EPSBound fraction that could be promoted by biofilm detachment phenomena occurred during experiments.",
keywords = "MBBR, Nutrient removal, WWTP, membrane, wastewater",
author = "Gaspare Viviani and Marco Capodici and Giorgio Mannina and {Di Trapani}, Daniele and Alida Cosenza",
year = "2016",
language = "English",
pages = "1--16",

}

TY - CONF

T1 - A moving bed membrane bioreactor pilot plant for carbon and nutrient removal

AU - Viviani, Gaspare

AU - Capodici, Marco

AU - Mannina, Giorgio

AU - Di Trapani, Daniele

AU - Cosenza, Alida

PY - 2016

Y1 - 2016

N2 - The paper reports the main results of an experimental gathering campaign carried out on a moving bed membrane bioreactor pilot plant conceived for carbon and nutrients removal according to a University of Cape Town scheme. Organic carbon, nitrogen and phosphorus removal, biokinetic/stoichiometric constants, membrane fouling tendency and sludge dewaterability have been assessed during experiments. The achieved results showed that pilot plant was able to guarantee very high carbon removal, with average efficiency of 98%. In terms of nitrification, the system showed an excellent performance, with efficiencies higher than 98% for most of the experiments. This result might be related to the presence of biofilm in the aerobic compartment that contributed to sustain the complete nitrification of the influent ammonium. Conversely, the average P removal efficiency was quite moderate, likely due to the increase of the ammonium loading rate that could promote an increased NO3-N recycled from the anoxic to the anaerobic tank, interfering with PAOs activity inside the anaerobic tank. Referring to membrane fouling, the irreversible resistance due to superficial cake deposition was the mechanism that mostly affected the membrane filtration properties. Moreover, it was noticed the increase of the resistance due to pore blocking and a general worsening of the membrane filtration properties. This result could be due to the increase of the EPSBound fraction that could be promoted by biofilm detachment phenomena occurred during experiments.

AB - The paper reports the main results of an experimental gathering campaign carried out on a moving bed membrane bioreactor pilot plant conceived for carbon and nutrients removal according to a University of Cape Town scheme. Organic carbon, nitrogen and phosphorus removal, biokinetic/stoichiometric constants, membrane fouling tendency and sludge dewaterability have been assessed during experiments. The achieved results showed that pilot plant was able to guarantee very high carbon removal, with average efficiency of 98%. In terms of nitrification, the system showed an excellent performance, with efficiencies higher than 98% for most of the experiments. This result might be related to the presence of biofilm in the aerobic compartment that contributed to sustain the complete nitrification of the influent ammonium. Conversely, the average P removal efficiency was quite moderate, likely due to the increase of the ammonium loading rate that could promote an increased NO3-N recycled from the anoxic to the anaerobic tank, interfering with PAOs activity inside the anaerobic tank. Referring to membrane fouling, the irreversible resistance due to superficial cake deposition was the mechanism that mostly affected the membrane filtration properties. Moreover, it was noticed the increase of the resistance due to pore blocking and a general worsening of the membrane filtration properties. This result could be due to the increase of the EPSBound fraction that could be promoted by biofilm detachment phenomena occurred during experiments.

KW - MBBR

KW - Nutrient removal

KW - WWTP

KW - membrane

KW - wastewater

UR - http://hdl.handle.net/10447/180710

M3 - Other

SP - 1

EP - 16

ER -