Development and testing of a fully gravitational submerged anaerobic membrane bioreactor for wastewater treatment
Development and testing of a fully gravitational submerged anaerobic membrane bioreactor for wastewater treatment
A gravity-operated submerged anaerobic membrane bioreactor (SAnMBR) was set up in order to test its principle of operation as an alternative to conventional pumped permeation of the membrane. This operating mode allowed the membrane flux rate to be measured accurately whilst maintaining a constant transmembrane pressure (TMP), and allowed small transient variations in flux rate to be observed. The reactor was operated at 36 0C for a period of 115 days using a nutrient-balanced synthetic substrate with a high suspended solids concentration. Membrane cleaning was in-situ by a gas scouring system using recirculation of headspace biogas. With an initial TMP of 7.0 kPa the membrane flux slowly decreased due to membrane fouling and had not reached a constant value by day 71. The results indicated that the system was still acclimatising up to 50 days after start-up; but from that point onwards performance parameters became much more stable. A constant flux of 2.2 L m-2 hour-1 was achieved over the last 45 days after the TMP was reduced to 2.3 kPa. The stable flux was maintained over this period and the loading raised to 1g COD L-1 d-1 by increasing the influent strength. Under these conditions the average COD removal efficiency was 96% and the specific methane potential (SMP) was 0.31 L CH4 g-1 COD removed.
anaerobic digestion, anmbr, membrane fouling, sustainable membrane flux, wastewater treatment
1-12
Pacheco-Ruiz, Santiago
221a2064-25a2-4638-96e3-1482fc00d055
Heaven, Sonia
f25f74b6-97bd-4a18-b33b-a63084718571
Banks, Charles J.
5c6c8c4b-5b25-4e37-9058-50fa8d2e926f
2 April 2015
Pacheco-Ruiz, Santiago
221a2064-25a2-4638-96e3-1482fc00d055
Heaven, Sonia
f25f74b6-97bd-4a18-b33b-a63084718571
Banks, Charles J.
5c6c8c4b-5b25-4e37-9058-50fa8d2e926f
Pacheco-Ruiz, Santiago, Heaven, Sonia and Banks, Charles J.
(2015)
Development and testing of a fully gravitational submerged anaerobic membrane bioreactor for wastewater treatment.
Environmental Technology, .
(doi:10.1080/09593330.2015.1026847).
Abstract
A gravity-operated submerged anaerobic membrane bioreactor (SAnMBR) was set up in order to test its principle of operation as an alternative to conventional pumped permeation of the membrane. This operating mode allowed the membrane flux rate to be measured accurately whilst maintaining a constant transmembrane pressure (TMP), and allowed small transient variations in flux rate to be observed. The reactor was operated at 36 0C for a period of 115 days using a nutrient-balanced synthetic substrate with a high suspended solids concentration. Membrane cleaning was in-situ by a gas scouring system using recirculation of headspace biogas. With an initial TMP of 7.0 kPa the membrane flux slowly decreased due to membrane fouling and had not reached a constant value by day 71. The results indicated that the system was still acclimatising up to 50 days after start-up; but from that point onwards performance parameters became much more stable. A constant flux of 2.2 L m-2 hour-1 was achieved over the last 45 days after the TMP was reduced to 2.3 kPa. The stable flux was maintained over this period and the loading raised to 1g COD L-1 d-1 by increasing the influent strength. Under these conditions the average COD removal efficiency was 96% and the specific methane potential (SMP) was 0.31 L CH4 g-1 COD removed.
Text
Pacheco-Ruiz, Heaven and Banks, 2015.(e-print scholar text).pdf
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More information
Accepted/In Press date: 28 February 2015
e-pub ahead of print date: 2 April 2015
Published date: 2 April 2015
Keywords:
anaerobic digestion, anmbr, membrane fouling, sustainable membrane flux, wastewater treatment
Organisations:
Water & Environmental Engineering Group
Identifiers
Local EPrints ID: 375788
URI: http://eprints.soton.ac.uk/id/eprint/375788
ISSN: 0959-3330
PURE UUID: dee4fc99-9711-4c4f-bb79-0d2975627083
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Date deposited: 14 Apr 2015 12:09
Last modified: 15 Mar 2024 02:52
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Author:
Santiago Pacheco-Ruiz
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