Natural organic matter fouling of low-pressure, hollow-fiber membranes: Effects of NOM source and hydrodynamic conditions

Effects of natural organic matter (NOM) source and hydrodynamic conditions on both hydraulically reversible and irreversible fouling of low-pressure, hollow-fiber (LPHF) membranes were systematically investigated using representative sources of natural waters and wastewater effluents. It was found t...

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Bibliographic Details
Published in:Water research (Oxford) 2007-09, Vol.41 (17), p.3823-3832
Main Authors: Huang, Haiou, Lee, NoHwa, Young, Thayer, Gary, Amy, Lozier, James C., Jacangelo, Joseph G.
Format: Article
Language:English
Subjects:
artificial membranes
Carbon - chemistry
Chromatography, Gel
Colloids
effluents
Fouling
Hollow-fiber membrane
hydraulic systems
Hydrodynamic condition
hydrodynamics
Low pressure
membrane permeability
Membranes, Artificial
Natural organic matter
Organic Chemicals - chemistry
organic matter
permeates
polyether sulfone
Polymers
polyvinylidene fluoride
Polyvinyls
Pressure
Solubility
Sulfones
synthetic fibers
Ultrafiltration - methods
wastewater treatment
Water - chemistry
water pollution
Water Purification - methods
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Summary:Effects of natural organic matter (NOM) source and hydrodynamic conditions on both hydraulically reversible and irreversible fouling of low-pressure, hollow-fiber (LPHF) membranes were systematically investigated using representative sources of natural waters and wastewater effluents. It was found that NOM source plays a primary role in determining the fouling of these membranes. Increase in permeate flux promoted membrane fouling, but to a lesser extent than NOM source. Permeate backwash flux appeared to restore permeability more effectively for the polyether sulfone (PES) membranes than to the polyvinylidene fluoride (PVDF) membranes used. NOM characterization revealed that organic colloids contributed predominantly to the hydraulically reversible fouling, and potentially to the irreversible fouling. Overall, this study demonstrated the importance of NOM source and the presence of organic colloids in the fouling of LPHF membranes, as well as the relevance of hydrodynamic operating conditions on the hydraulic reversibility of the fouling.
ISSN:0043-1354
1879-2448
DOI:10.1016/j.watres.2007.05.036