Removal of micropollutants from municipal wastewater by membrane bioreactors: Conventional membrane versus dynamic membrane

2022 ◽  
Vol 303 ◽  
pp. 114233
Author(s):  
Onur Isik ◽  
Melek Cagla Erbil ◽  
Amr Mustafa Abdelrahman ◽  
Mustafa Evren Ersahin ◽  
Ismail Koyuncu ◽  
...  
2020 ◽  
Vol 95 (9) ◽  
pp. 2437-2446
Author(s):  
Onur Isik ◽  
Riza Hudayarizka ◽  
Amr M Abdelrahman ◽  
Hale Ozgun ◽  
Mustafa E Ersahin ◽  
...  

2015 ◽  
Vol 4 (0) ◽  
pp. 9781780402925-9781780402925
Author(s):  
H. van der Roest ◽  
D. Lawrence ◽  
A. van Bentem

2005 ◽  
Vol 51 (6-7) ◽  
pp. 1-8 ◽  
Author(s):  
B. Lesjean ◽  
S. Rosenberger ◽  
C. Laabs ◽  
M. Jekel ◽  
R. Gnirss ◽  
...  

Two similar membrane bioreactors of 2 m3 each were operated in parallel over two years under the same operational conditions, fed with the same municipal wastewater. The only process and operational difference between both pilot plants was the position of the denitrification zone (pre-denitrification in pilot 1 and post-denitrification in pilot 2). Despite parallel operation, the two MBRs exhibited different fouling rates and decreases in permeability. These differences could not be accounted for by MLSS concentrations, loading rates, or filtration flux. In a one-year investigation, soluble and colloidal organic material in the activated sludge of both MBR was regularly analysed by spectrophotometric and Size Exclusion Chromatography (SEC) methods. The larger organic molecules present in the sludge water phase (i.e. polysaccharides, proteins and organic colloids) originating from microbial activity (extracellular polymeric substances) were found to impact on the fouling and to explain the difference in membrane performance between the two MBR units. In both pilot plants, a linear relationship could be clearly demonstrated between the fouling rate of the membrane and the concentration of polysaccharides in the sludge water phase during a 5 month operational period at an SRT of 8 days.


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