USE OF ULTRAFILTRATION FOR REMOVAL OF DISSOLVED ORGANIC MATTER (III)
Date Issued
1999-07-31
Date
1999-07-31
Author(s)
DOI
882211E002015
Abstract
The objective of this study is to
investigate the effect of hydrophobicity
of NOM on ultrafiltration operation in
water industry. DAX-8 resin was used
for isolating hydrophilic and hydrophobicNOM compounds and GFC was
for fractionating various NOM molecular
weight size.
UF of humic acid containing water
has shown to be greatly dependent on
the hydrophobic and hydrophilic
components of NOM. UF perneate flux
was significant affected by the hydrophilic
compounds. This flux decline was
primary due to the irreversible fouling
resulted from the gel layer on the
membrane surface.
Molecular size seems to play a very
important role on the UF permeate flux.
Larger NOM molecules causes severe
flux decline probably due to the size
blocking effect.
Use of PAC in conjunction with UF
provide an efficient way in enhancing
TOC removal from water treatment
process. However, the UF-PAC hybrid
system does cause even severe flux
decline. we can assure that PAC is preferable
to remove the non-fouling compounds
from feedwater.
Subjects
NOM
fouling
PAC
hydrophobicity
ultrafiltration
humic acid
humic acid
Publisher
臺北市：國立臺灣大學環境工程學研究所
Type
report
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