The forward osmosis membrane bioreactor: A low fouling alternative to MBR processes

被引:618
作者
Achilli, Andrea [1 ]
Cath, Tzahi Y. [2 ]
Marchand, Eric A. [1 ]
Childress, Amy E. [1 ]
机构
[1] Univ Nevada, Dept Civil & Environm Engn, Reno, NV 89557 USA
[2] Colorado Sch Mines, Environm Engn & Sci Div, Golden, CO 80401 USA
关键词
Membrane bioreactor; Forward osmosis; Membrane fouling; Wastewater treatment; Nutrient removal; WASTE-WATER; REVERSE-OSMOSIS; PREDICTION;
D O I
10.1016/j.desal.2008.02.022
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
A novel osmotic membrane bioreactor(OsMBR) is presented. The system utilizes a submerged forward osmosis (FO) membrane module inside a bioreactor. Through osmosis, water is transported from the mixed liquor across a semi-permeable membrane, and into a draw solution (DS) with a higher osmotic pressure. To produce potable water, the diluted DS is treated in a reverse osmosis (RO) unit; the by-product is a reconcentrated DS for reuse in the FO process. Preliminary results from experiments conducted with a flat-sheet cellulose triacetate FO membrane demonstrated high sustainable flux and relatively low reverse transport of solutes from the DS into the mixed liquor. Membrane fouling was controlled with osmotic backwashing. The FO membrane was found to reject 98% of organic carbon and 90% of ammonium-nitrogen; the OsMBR process (bioreactor and FO membrane) was found to remove greater than 99% of organic carbon and 98% of ammonium-nitrogen, respectively; suggesting a better compatibility of the OsMBR with downstream RO systems than conventional membrane bioreactors.
引用
收藏
页码:10 / 21
页数:12
相关论文
共 27 条
[1]   Characterization of dissolved compounds in submerged anaerobic membrane bioreactors (SAMBRs) [J].
Aquino, Sergio F. ;
Hu, Alan Y. ;
Akram, Aurangzeb ;
Stuckey, David C. .
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, 2006, 81 (12) :1894-1904
[2]   FOULING PREDICTION IN REVERSE-OSMOSIS PROCESSES [J].
BARGER, M ;
CARNAHAN, RP .
DESALINATION, 1991, 83 (1-3) :3-33
[3]   Fouling characterisation in membrane bioreactors [J].
Bouhabila, E ;
Ben Aïm, R ;
Buisson, H .
SEPARATION AND PURIFICATION TECHNOLOGY, 2001, 22-3 (1-3) :123-132
[4]   Removal of natural steroid hormones from wastewater using membrane contactor processes [J].
Cartinella, Joshua L. ;
Cath, Tzahi Y. ;
Flynn, Michael T. ;
Miller, Glenn C. ;
Hunter, Kenneth W., Jr. ;
Childress, Amy E. .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2006, 40 (23) :7381-7386
[5]   Membrane contactor processes for wastewater reclamation in space Part I. Direct osmotic concentration as pretreatment for reverse osmosis [J].
Cath, TY ;
Gormly, S ;
Beaudry, EG ;
Flynn, MT ;
Adams, VD ;
Childress, AE .
JOURNAL OF MEMBRANE SCIENCE, 2005, 257 (1-2) :85-98
[6]   Forward osmosis: Principles, applications, and recent developments [J].
Cath, Tzahi Y. ;
Childress, Amy E. ;
Elimelech, Menachem .
JOURNAL OF MEMBRANE SCIENCE, 2006, 281 (1-2) :70-87
[7]   Controlling fouling in membrane bioreactors operated with a variable throughput [J].
Chua, HC ;
Arno, TC ;
Howell, JA .
DESALINATION, 2002, 149 (1-3) :225-229
[8]   Comparing microfiltration-reverse osmosis and soil-aquifer treatment for indirect potable reuse of water [J].
Drewes, JE ;
Reinhard, M ;
Fox, P .
WATER RESEARCH, 2003, 37 (15) :3612-3621
[9]   Forward osmosis for concentration of anaerobic digester centrate [J].
Holloway, Ryan W. ;
Childress, Amy E. ;
Dennett, Keith E. ;
Cath, Tzahi Y. .
WATER RESEARCH, 2007, 41 (17) :4005-4014
[10]   Fouling control in activated sludge submerged hollow fiber membrane bioreactors [J].
Hong, SP ;
Bae, TH ;
Tak, TM ;
Hong, S ;
Randall, A .
DESALINATION, 2002, 143 (03) :219-228