Performance assessment of a pilot-size vacuum rotation membrane bioreactor treating urban wastewater
Tóm tắt
This study investigated the suitability and performance of a pilot-scale membrane bioreactor (MBR). Huber vacuum rotation membrane (VRM 20/36) bioreactor was installed at the Sharjah sewage treatment plant (STP) in the United Arab Emirate for 12 months. The submerged membranes were flat sheets with a pore size of 0.038 μm. The VRM bioreactor provided a final effluent of very high quality. The average reduction on parameters such as COD was from 620 to 3 mg/l, BOD from 239 to 3 mg/l, Ammonia from 37 to 2 mg/l, turbidity from 225NTU to less than 3NTU, and total suspended solids from 304 mg/l to virtually no suspended solids. The rotating mechanism of the membrane panels permitted the entire membrane surface to receive the same intensive degree of air scouring, which lead to a longer duration. The MBR process holds a promising future because of its smaller footprints in contrast to conventional systems, superior effluent quality, and high loading rate capacity.
Tài liệu tham khảo
Aidan A, Abdel-Jabbar N, Ibrahim TH, Nenov V, Mjalli F (2008) Neural network modeling and optimization of scheduling backwash for membrane bioreactor (MBR). Clean Technol Environ Policy J 10(4)
Chen C-L, Liu W-T, Chong M-L, Wong M-T, Ong SL, Seah H, Ng WJ (2004) Community structure of microbial biofilms associated with membrane-based water purification processes as revealed using a polyphasic approach. Appl Microbiol Biotechnol 63:466–473
Ghosh R (2006) Enhancement of membrane permeability by gas sparging in submerged hollow fiber ultrafiltration of macromolecular solutions: role of module design. J Membr Sci 274(1–2):73–82
Hong SP, Bae TH, Tak TM, Hong S, Randallb A (2002) Fouling control in activated sludge submerged hollow fiber membrane bioreactors. Desalination 143(2002):219–228
Itonaga T, Watanabe Y (2004) Performance of membrane bioreactor combined with pre-coagulation/sedimentation. Water Supply 4:143–149
Itonaga T, Kimura K, Watanabe Y (2004) Influence of suspension viscosity and colloidal particles on permeability of membrane used in membrane bioreactor (MBR). Water Sci Technol 50:301–309
Judd SJ (2006) Membrane bioreactor process fundamentals. In: Proceedings, Microfiltration IV conference, the National Water Research Institute (NWRI)
Kimura K, Yamato N, Yamamura H, Watanabe Y (2005) Membrane fouling in pilot-scale membrane bioreactors (MBRs) treating municipal wastewater. Environ Sci Technol 39:6293–6299
Le-Clech P, Jefferson B, Judd SJ (2003) Impact of aeration, solids concentration and membrane characteristics on the hydraulic performance of a membrane bioreactor. J Membr Sci 218:117–129
Ng HY, Tan TW, Ong SL (2006) Membrane fouling of submerged membrane bioreactors: impact of mean cell residence time and the contributing factors. Environ Sci Technol 40:2706–2713
Rosenberger S, Laabs C, Lesjean B, Gnirss R, Amy G, Jekel M, Schrotter J-C (2006) Impact of colloidal and soluble organic material on membrane performance in membrane bioreactors for municipal wastewater treatment. Water Res 40:710–720
Sarin V, Brechtelsbauer P (2007) Wastewater treatment using MBR. Water Dig 2(1)
Trussell RR (2006) Membrane bioreactors and the future of wastewater treatment. In: Proceedings, Microfiltration IV conference, the National Water Research Institute (NWRI)
Wahlberg E, Melcer H, Bratby J, Molseed A (2005) The MBR revolution. Brown and Caldwell Quarterly Fall 33(3)
Yamato N, Kimura K, Miyoshi T, Watanabe Y (2006) Difference in membrane fouling in membrane bioreactors (MBRs) caused by membrane polymer materials. J Membr Sci 280:911–919
Yuki M, Yoshimasa W, Satoshi O (2007) Membrane biofouling in pilot-scale membrane bioreactors (MBRs) treating municipal wastewater: impact of biofilm formation. Environ Sci Technol 41(2):632–638
Zhang K, Choi H, Dionysiou DD, Sorial GA, Oerther DB (2006) Identifying pioneer bacterial species responsible for biofouling membrane bioreactors. Environ Microbiol 8:433–440