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Greenhouse gas emissions and the links to plant performance in a fixed-film activated sludge membrane bioreactor - Pilot plant experimental evidence

Mannina, Giorgio; Capodici, Marco; Cosenza, Alida; Di Trapani, Daniele and Olsson, Gustaf LU (2017) In Bioresource Technology
Abstract

The present study explores the interlinkages among the operational variables of a University of Cape Town (UCT) Integrated Fixed Film Activated Sludge (IFAS) membrane bioreactor (MBR) pilot plant. Specifically, dedicated experimental tests were carried out with the final aim to find-out a constitutive relationship among operational costs (OCs), effluent quality index (EQI), effluent fines (EF). Greenhouse gas (GHG) emissions were also included in the study. Results showed that the EQI increases at low flow rate likely due to the dissolved oxygen (DO) limitation in the biological processes. Direct GHGs increase with the increasing of the air flow due to the anoxic N2O contribution. Irreversible membrane fouling reduce from 98%... (More)

The present study explores the interlinkages among the operational variables of a University of Cape Town (UCT) Integrated Fixed Film Activated Sludge (IFAS) membrane bioreactor (MBR) pilot plant. Specifically, dedicated experimental tests were carried out with the final aim to find-out a constitutive relationship among operational costs (OCs), effluent quality index (EQI), effluent fines (EF). Greenhouse gas (GHG) emissions were also included in the study. Results showed that the EQI increases at low flow rate likely due to the dissolved oxygen (DO) limitation in the biological processes. Direct GHGs increase with the increasing of the air flow due to the anoxic N2O contribution. Irreversible membrane fouling reduce from 98% to 85% at the air flow rate of 0.57m3 h-1 and 2.56m3 h-1, respectively. However, the increase of the air flow rate leads to the increase of the N2O-N flux emitted from the MBR (from 40% to 80%).

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author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
Greenhouse gas emission, Mathematical modelling, Membrane bioreactor, Moving bed biofilm reactor, Wastewater treatment
in
Bioresource Technology
publisher
Elsevier
external identifiers
  • scopus:85020089408
  • wos:000405502400135
ISSN
0960-8524
DOI
10.1016/j.biortech.2017.05.043
language
English
LU publication?
yes
id
7f74cc2d-b85c-45c1-8466-4c44daf52671
date added to LUP
2017-06-29 10:04:28
date last changed
2017-09-18 11:36:59
@article{7f74cc2d-b85c-45c1-8466-4c44daf52671,
  abstract     = {<p>The present study explores the interlinkages among the operational variables of a University of Cape Town (UCT) Integrated Fixed Film Activated Sludge (IFAS) membrane bioreactor (MBR) pilot plant. Specifically, dedicated experimental tests were carried out with the final aim to find-out a constitutive relationship among operational costs (OCs), effluent quality index (EQI), effluent fines (EF). Greenhouse gas (GHG) emissions were also included in the study. Results showed that the EQI increases at low flow rate likely due to the dissolved oxygen (DO) limitation in the biological processes. Direct GHGs increase with the increasing of the air flow due to the anoxic N<sub>2</sub>O contribution. Irreversible membrane fouling reduce from 98% to 85% at the air flow rate of 0.57m<sup>3</sup> h<sup>-1</sup> and 2.56m<sup>3</sup> h<sup>-1</sup>, respectively. However, the increase of the air flow rate leads to the increase of the N<sub>2</sub>O-N flux emitted from the MBR (from 40% to 80%).</p>},
  author       = {Mannina, Giorgio and Capodici, Marco and Cosenza, Alida and Di Trapani, Daniele and Olsson, Gustaf},
  issn         = {0960-8524},
  keyword      = {Greenhouse gas emission,Mathematical modelling,Membrane bioreactor,Moving bed biofilm reactor,Wastewater treatment},
  language     = {eng},
  month        = {05},
  publisher    = {Elsevier},
  series       = {Bioresource Technology},
  title        = {Greenhouse gas emissions and the links to plant performance in a fixed-film activated sludge membrane bioreactor - Pilot plant experimental evidence},
  url          = {http://dx.doi.org/10.1016/j.biortech.2017.05.043},
  year         = {2017},
}