The cake layer formation in the early stage of filtration in MBR: Mechanism and model

2018 ◽  
Vol 559 ◽  
pp. 75-86 ◽  
Author(s):  
Wei Yao ◽  
Zhan Wang ◽  
Peng Song
2020 ◽  
pp. 118903
Author(s):  
Ikenna H. Ozofor ◽  
Volodymyr V. Tarabara ◽  
Andre R. Da Costa ◽  
Audra N. Morse

Desalination ◽  
2006 ◽  
Vol 189 (1-3) ◽  
pp. 97-109 ◽  
Author(s):  
A. Broeckmann ◽  
J. Busch ◽  
T. Wintgens ◽  
W. Marquardt

Desalination ◽  
2013 ◽  
Vol 309 ◽  
pp. 213-221 ◽  
Author(s):  
JaeHo Shin ◽  
KyungHo Kim ◽  
JuHyeon Kim ◽  
SangHwan Lee

2015 ◽  
Vol 71 (7) ◽  
pp. 1073-1080 ◽  
Author(s):  
T. A. Cao ◽  
G. Van De Staey ◽  
I. Y. Smets

Although studied extensively, modeling fouling phenomena in membrane bioreactors (MBRs) remains challenging. It has been well established that cake layer formation and pore blocking have a strong impact on the filtration performance but how to capture that in comprehensive models is not fully defined yet. Since it has been shown that bioflocculation characteristics of activated sludge have a clear link with (the extent of) membrane fouling, this study integrates activated sludge floc size (i.e., particle size distribution) information in the model for pore blocking and cake layer formation with a focus on constant flux operated MBRs. Based on these floc size distributions, a three-dimensional modeling and visualization of the cake layer is envisaged which can then provide the required input information (e.g., the porosity of the cake layer) for the fouling model. The model is calibrated and validated on the basis of experimental data from Hwang et al. (2012) in ‘Membrane bioreactor: TMP rise and characterization of biocake structure using CLSM-image analysis’ (see J. Membr. Sci. 419–420, 33–41).


2017 ◽  
Vol 22 (3) ◽  
pp. 281-286 ◽  
Author(s):  
Shun Yamanouchi ◽  
Eri Nasuno ◽  
Masaki Ohno ◽  
Chigusa Okano ◽  
Ken-ichi Iimura ◽  
...  

2009 ◽  
Vol 9 (1-3) ◽  
pp. 82-85 ◽  
Author(s):  
S. Buetehorn ◽  
M. Brannock ◽  
P. Le-Clech ◽  
G. Leslie ◽  
D. Volmering ◽  
...  

2016 ◽  
Vol 74 (12) ◽  
pp. 2737-2750 ◽  
Author(s):  
Mohammad Torkamanzadeh ◽  
Mohsen Jahanshahi ◽  
Majid Peyravi ◽  
Ali Shokuhi Rad

Determination of fouling mechanisms and accurate quantitative prediction of nano-porous membrane behavior are of great interest in membrane processes. This work has focused on a comprehensive comparison of two classical and new fouling models. Different operational conditions were tested to analyze the level of agreement of these models with experimental observation. Whey solutions of 8, 0.8 and 0.5 g/L were ultrafiltered in transmembrane pressures (TMPs) of 300 and 500 KPa through a synthesized polyethersulfone/copolymer blend membrane. Fouling mechanisms and the effect of different combinations of TMPs and protein concentrations were determined and analyzed by fitting the experimental data to different models. Based on the results obtained from classical models, it was found that the predictions of the cake layer formation model were quite acceptable, followed by the intermediate blocking model. The new combined pore blockage-cake filtration model, however, was found to be very successful in predicting the flux decline over time for every operational condition tested, with all relative errors of prediction less than 5%. The latter also showed a good performance in the transition from the pore blockage mechanism to cake layer formation.


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