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Membrane air‐stripping: effects of pretreatment
Author(s) -
Castro Kevin,
Zander Amy K.
Publication year - 1995
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1995.tb06332.x
Subject(s) - air stripping , stripping (fiber) , chlorine , membrane , microporous material , chemistry , aeration , environmental chemistry , hollow fiber membrane , polypropylene , chromatography , environmental engineering , environmental science , materials science , wastewater , organic chemistry , biochemistry , composite material
Membrane air‐stripping shows promise for removing volatile contaminants from low‐pH and low‐chlorinewaters but is incompatible with ozonated waters or waters with high pH or high‐chlorine concentration. Microporous polypropylene hollow‐fiber membranes offer significant advantages over packed‐tower aeration for removing volatile organic chemicals. A laboratory study assessed the performance of membrane air‐stripping in continuous operation, while exposed to various pretreatments. Results indicate that membrane air‐stripping is compatible with low‐pH or low‐chlorine waters but not with waters of high pH or high‐chlorine concentration or those that are ozonated.