Titanium-based Photocatalysis As The
Pretreatment For Ultrafiltration Of Secondary
Municipal Effluent With Low Concentration Of
Organic Matters
Author(s)
H. Liu & L. Song
Abstract
Ultrafiltration (UF) has been regarded as a cost-effective option compared to NF
and RO for the municipal effluent reclamation process. But the fouling caused
by organic matter from the biologically treated sewage effluent is still a serious
problem in the process. The photocatalysis was employed as the pretreatment
measure for the ultrafiltration of secondary effluents. The fouling potential k
was significantly lowered by this pretreatment measure. The effects of catalyst
type (anatase, rutile, and Degussa P-25), catalyst dosage, pH value, and UV light
intensity on fouling potential variation and dissolved organic carbon (DOC)
removal were investigated. The results showed that the presence of UV and
TiO2 improved DOC removal ratio. The effect of photocatalyst type on fouling
potential abatement was compared. The pH value and catalyst concentration
were optimized to get the highest fouling potential reduction and DOC removal
efficiency.
Keywords: secondary effluents, photocatalysis, titanium dioxide, ultrafiltration,
membrane fouling, fouling potential, pre-treatment, wastewater reclamation.
1 Introduction
The low pressure-driven membrane processes such as microfiltration and
ultrafiltration are increasingly applied in drinking water, industrial water
production and wastewater treatment these years. The membrane process has the
advantage of compactness, good retention and separation effects for suspended
Keywords
secondary effluents, photocatalysis, titanium dioxide, ultrafiltration,
membrane fouling, fouling potential, pre-treatment, wastewater reclamation.
Related Book
Other papers in this volume
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