An investigation of the long-term filtration performance of a membrane bioreactor (MBR): The role of specific organic fractions

Patsios, Sotiris I.; Karabelas, A.J.

doi:10.1016/j.memsci.2011.01.055

Cited by 60 publications

(30 citation statements)

References 29 publications

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“…In order to minimise any kind of membrane fouling and thereby increase membrane lifespan, the main operating challenge for AnMBRs is to optimise membrane operation and configuration [6,7,8]. It is therefore necessary to optimise filtration whilst minimising not only capital expenditure but also operating and maintenance costs.…”

Section: Introductionmentioning

confidence: 99%

Design methodology for submerged anaerobic membrane bioreactors (AnMBR): A case study

Ferrer

Pretel

Durán

et al. 2015

Separation and Purification Technology

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Section: Introductionmentioning

confidence: 99%

Design methodology for submerged anaerobic membrane bioreactors (AnMBR): A case study

Ferrer

Pretel

Durán

et al. 2015

Separation and Purification Technology

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“…And such membranes have been broadly applied in membrane bioreactor (MBR) systems. 10 The MBR has emerged as an attractive technology for advanced municipal and industrial wastewater treatment, and offers lots of advantages over conventional wastewater treatment processes, including low sludge production, excellent quality effluent and reduced footprint. 11,12 However, the hollow fiber membranes are liable to be damaged or broke by the highpressure cleaning process or disturbance of the aerated airflow during the MBR process.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of braided tube reinforced polyacrylonitrile hollow fiber membranes

Quan

Xiao

Liu

et al. 2014

J of Applied Polymer Sci

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Polyacrylonitrile (PAN) and polyester (PET) braided hollow tube that used as a special reinforcement are braided from their filaments via two-dimensional weaving techniques. PAN braided tube reinforced homogeneous PAN hollow fiber membranes and PET braided tube reinforced heterogeneous PAN hollow fiber membranes are prepared by concentric circles squeezed-coated spinning method. As for PAN hollow fiber membrane, the effects of PAN concentration on the performance of the prepared hollow fiber membranes are investigated in terms of pure water flux, protein rejection, mechanical strength, and morphology observations by a scanning electron microscope (SEM). The interfacial bonding state of the braided tube reinforced PAN hollow fiber membranes is studied by constant speed stretching method. Results show that the breaking strength of two-dimensional braided tube reinforced PAN hollow fiber membranes is higher than 80 MPa. The structure of separation surface is similar to the structure of an asymmetric membrane. With the increase of polymer concentration, the membrane flux decreases while the retention rate of BSA increase. The membrane porosity and maximum pore size have the same decreasing tendency as the increase of PAN concentration. The results also show that the interfacial bonding state of the PAN two-dimensional braided tube reinforced homogeneous PAN hollow fiber membranes is better than that of the PET two-dimensional braided tube reinforced heterogeneous PAN hollow fiber membranes.

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“…In this study, reversible (or temporary) fouling was assessed in terms of filterability tests, which were conducted before and after the addition of polyelectrolytes in mixed liquor samples, obtained from the MBR aeration tank on a daily basis. It is widely accepted that during filtration the Dissolved Organic Matter (DOM) compounds, mainly comprising SMP, would be adsorbed onto and/or into the used membrane, tending to block membrane pores and forming a partly irreversible gel structure on the membrane surface (Patsios and Karabelas 2011). Therefore, irreversible (or permanent) fouling was assessed in terms of SMP concentration measurements in the present study.…”

Section: Organic Polyelectrolytesmentioning

confidence: 99%

Wastewater Treatment in Membrane Bioreactors: The Use of Polyelectrolytes to Control Membrane Fouling

et al. 2016

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The present study investigates the addition of several commercially available cationic (FO 4000 SSH and ADIFLOC series) and anionic (LT-25 Magnafloc) polyelectrolytes in a fully automated, pilot-scale Membrane Bioreactor (MBR), aiming to the development of an integrated methodology for the control of membrane fouling in MBR treatment systems. For this purpose, a series of batch experiments were conducted in order to evaluate their effectiveness on membrane fouling mitigation, using a typical hollow fiber, commercially available microfiltration membrane. Reversible fouling was assessed in terms of sludge filterability tests, whereas irreversible fouling was assessed in terms of SMPs (Soluble Microbial Products) concentration measurements. Results showed that the addition of cationic polyelectrolytes FO 4000 SSH series and ADIFLOC series were found capable to reduce both reversible and irreversible fouling. More specifically, the FO 4350 SSH type exhibited a remarkable performance, regarding both sludge filterability enhancement and SMP removal, when added at the concentration of 10 mg/L. Further comparison with the anionic polyelectrolyte LT-25 Magnafloc reinforced the allegation that cationic polyelectrolytes are preferable for control of membrane fouling, mainly due to charge neutralization mechanism.

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An investigation of the long-term filtration performance of a membrane bioreactor (MBR): The role of specific organic fractions

Cited by 60 publications

References 29 publications

Design methodology for submerged anaerobic membrane bioreactors (AnMBR): A case study

Design methodology for submerged anaerobic membrane bioreactors (AnMBR): A case study

Preparation and characterization of braided tube reinforced polyacrylonitrile hollow fiber membranes

Wastewater Treatment in Membrane Bioreactors: The Use of Polyelectrolytes to Control Membrane Fouling

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