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Coagulation Pretreatment for Ultrafiltration of a Surface Water
Author(s) -
LahoussineTurcaud Véronique,
Wiesner Mark R.,
Bottero JeanYves,
Mallevialle Joël
Publication year - 1990
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.1551-8833.1990.tb07070.x
Subject(s) - ultrafiltration (renal) , fouling , coagulation , tap water , chemistry , polysulfone , filtration (mathematics) , membrane fouling , flocculation , water treatment , turbidity , membrane , adsorption , dissolved organic carbon , surface water , chromatography , powdered activated carbon treatment , chloride , activated carbon , environmental chemistry , environmental engineering , environmental science , organic chemistry , geology , psychology , biochemistry , statistics , mathematics , oceanography , psychiatry
Polysulfone ultrafiltration membranes were used to treat water from the Seine River—with and without coagulation pretreatment. Pretreatment with polyaluminum or ferric chloride coagulant reduced the rate of reversible fouling and increased the removal of dissolved organic carbon (DOC) but did not reduce the rate or extent of irreversible fouling of the membrane. Seine River water that had been treated by coagulation, filtration, and ozonation, i.e., tap water, also produced significant irreversible fouling. Most of the DOC in flocculated Seine River water and tap water consisted of polysaccharide materials of low molecular weight. Irreversible fouling may be due to the adsorption of these materials on membrane surfaces.