Effect of PAC on the Behavior of Dynamic Membrane Bioreactor Filtration Layer Based on the Analysis of Mixed Liquid Properties and Model Fitting

Recently, dynamic membrane bioreactor (DMBR) has gradually gained the interest of researchers for the development of membrane technology. In this paper, we set up parallel experiments to investigate the effect of powder activated carbon (PAC) on organic matter removal, transmembrane pressure, and fi...

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Bibliographic Details
Published in:Membranes (Basel) 2020-12, Vol.10 (12), p.420
Main Authors: Huang, Chunyan, Liu, Hongju, Meng, Shujuan, Liang, Dawei
Format: Article
Language:English
Subjects:
Activated carbon
Biomass
Bioreactors
Chemical oxygen demand
DMBR
Experiments
Filter cake
Filtration
Fouling
membrane fouling
Membrane processes
Membranes
Microorganisms
Molecular weight
Organic matter
Performance assessment
Permeability
PN/PS in EPS
Pore size
Proteins
Sludge
the combined model
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Summary:Recently, dynamic membrane bioreactor (DMBR) has gradually gained the interest of researchers for the development of membrane technology. In this paper, we set up parallel experiments to investigate the effect of powder activated carbon (PAC) on organic matter removal, transmembrane pressure, and filter cake layer characterization to make an overall performance assessment of DMBR. The results showed that DMBR has a good removal effect on organic matter removal, and with a chemical oxygen demand removal rate over 85%. Protein was found to be the main membrane fouling substance. Due to the electric double-layer effect, membrane fouling tended to be alleviated when the PN/PS value was low. Using a filtration model under constant current conditions, the filtration process through the cake layer was observed to be consistent with cake-intermediate model.
ISSN:2077-0375
2077-0375
DOI:10.3390/membranes10120420