Membrane biofilm development improves COD removal in anaerobic membrane bioreactor wastewater treatment

Microbial Biotechnology - Tập 8 Số 5 - Trang 883-894 - 2015
Adam L. Smith1, Steven J. Skerlos1,2, Lutgarde Raskin1
1Department of Civil and Environmental Engineering, University of Michigan, 2350 Hayward Road, Ann Arbor, MI 48109, USA
2Department of Mechanical Engineering, University of Michigan, 2350 Hayward Road, Ann Arbor, MI 48109, USA

Tóm tắt

SummaryMembrane biofilm development was evaluated to improve psychrophilic (15°C) anaerobic membrane bioreactor (AnMBR) treatment of domestic wastewater. An AnMBR containing three replicate submerged membrane housings with separate permeate collection was operated at three levels of membrane fouling by independently controlling biogas sparging for each membrane unit. High membrane fouling significantly improved permeate quality, but resulted in dissolved methane in the permeate at a concentration two to three times the equilibrium concentration predicted by Henry's law. Illumina sequencing of 16S rRNA targeting Bacteria and Archaea and reverse transcription‐quantitative polymerase chain reaction targeting the methyl coenzyme‐M reductase (mcrA) gene in methanogens indicated that the membrane biofilm was enriched in highly active methanogens and syntrophic bacteria. Restoring fouled membranes to a transmembrane pressure (TMP) near zero by increasing biogas sparging did not disrupt the biofilm's treatment performance, suggesting that microbes in the foulant layer were tightly adhered and did not significantly contribute to TMP. Dissolved methane oversaturation persisted without high TMP, implying that methanogenesis in the biofilm, rather than high TMP, was the primary driving force in methane oversaturation. The results describe an attractive operational strategy to improve treatment performance in low‐temperature AnMBR by supporting syntrophy and methanogenesis in the membrane biofilm through controlled membrane fouling.

Từ khóa


Tài liệu tham khảo

10.1016/j.watres.2012.07.061

10.1016/j.watres.2011.04.030

10.1038/ismej.2013.102

10.1099/ijs.0.021782-0

10.1073/pnas.1000080107

10.1016/j.biortech.2012.08.038

10.1080/10934520600614504

10.2175/106143006X95393

10.1016/j.watres.2005.12.026

10.2166/wst.2012.897

Dagnew M. Parker W. Seto P. Waldner K. Hong Y. Bayly R. andCumin J.(2011)Pilot testing of an AnMBR for municipal wastewater treatment. 84th Annual Water Environment Federation Technical Exhibition and Conference Los Angeles CA USA.

10.1016/j.biortech.2012.02.079

10.1128/AEM.72.3.1858-1872.2006

10.1111/1462-2920.12162

10.1021/pr800923e

10.1128/AEM.01021-09

10.1128/AEM.00688-12

10.1016/j.memsci.2010.08.031

10.1016/j.biortech.2011.07.014

10.1002/bit.1044

10.1016/j.biortech.2015.03.002

10.1264/jsme2.23.118

10.1002/bit.21730

10.1016/j.watres.2010.08.035

10.1128/AEM.02155-12

10.1128/AEM.71.12.7838-7845.2005

10.1128/AEM.00333-06

10.1111/j.1574-6968.1992.tb04987.x

10.1128/AEM.66.4.1328-1333.2000

10.1007/s007920100234

10.1093/nar/gks808

10.1016/j.memsci.2013.12.078

10.1093/nar/gkn689

10.1016/S0167-7799(01)01701-2

10.1016/j.procbio.2013.02.003

10.1093/nar/25.1.109

10.1016/j.femsec.2004.02.012

10.1128/AEM.67.5.2354-2359.2001

10.2166/wst.2011.745

10.1111/1574-6941.12035

10.1007/s002530051067

10.1128/mBio.00159-11

10.1016/j.watres.2006.09.021

10.1016/j.watres.2012.09.044

10.1128/AEM.49.2.321-327.1985

10.1016/j.seppur.2012.12.004

10.1128/AEM.01541-09

10.1016/j.bbrc.2006.10.164

10.1016/j.biortech.2014.02.060

10.1111/j.1462-2920.2010.02237.x

10.1078/0723-2020-00058

10.1039/C4EW00070F

10.1016/j.watres.2012.12.028

10.1021/es5006169

10.1016/j.tim.2007.02.002

10.1099/ijs.0.64734-0

10.2166/wst.2012.192

10.1016/S0043-1354(00)00439-5

10.1038/ismej.2011.128

10.1126/science.1196526

Tchobanoglous G., 2003, Wastewater Engineering: Treatment and Reuse

10.1099/00221287-144-9-2377

10.1002/bit.20323

10.1371/journal.pone.0057923

10.1073/pnas.0502623102

10.1111/j.1574-6941.1994.tb00076.x

10.1002/bit.260460511

10.2166/wst.2011.727

10.1016/j.memsci.2005.07.010

10.1099/ijs.0.014811-0

10.1016/j.biortech.2012.06.028

10.1016/j.biortech.2012.04.075

Thông tin
Thông tin xuất bản

Microbial Biotechnology

Tập 8 Số 5

883-894

Thông tin tác giả