Improvement of Ozonation Systems for the Water and Waste Water Treatments (Ⅱ)
Date Issued
2000-07-31
Date
2000-07-31
Author(s)
張慶源
DOI
892211E002026
Abstract
One objective of this study is to remove
polyethylene glycol (PEG) from the acidbased
electroplating solution of printed
wiring board (PWB) industry by ozone (O3)
or ozone/ultraviolet (UV) processes. The
substrates (the major chemical species) of the
electroplating solution recipe are inorganics,
such as sulfuric acid, copper sulfate, etc.
Ozonation mainly destroys the minor organic
additives (PEG, for example).In addition, the biotoxicity,
biodegradability and color formation of the
target substances (phenol, nitrobenzene,
aniline and benzoic acid) during the
ozonation in different pH conditions are
investigated. The charcoal wastewater is
tested for the improvement of biological
wastewater treatment with pre-ozonation.
The third aim of the study is to establish a
homogeneous metal ion catalyzing ozonation
system. The efficiency of ozonation increases
and enhances the mineralization of organics.
The forth objective is to study the ozone
mass transfer with the consideration of
interfacial phenomena.
Subjects
Ozone
electroplating solution
biotoxicity
catalyzing
mineralization
interfacial phenomena
SDGs
Publisher
臺北市：國立臺灣大學環境工程學研究所
Type
report
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