| Summary: | 碩士 === 國立聯合大學 === 環境與安全衛生工程學系碩士班 === 104 === Dyeing and finishing industry can be regarded as textiles make-up artist, the process can be divided into three parts: pretreatment, printing and dyeing process and post-treatment. The textile industry must undergo processes such as bleaching, refining, printing and preboarding. So that large amount of wastewater discharge can be said to be industrial wastewater emissions from the largest. In the dyeing process will add a lot of high-color dyes and anti-photolysis of the help dye agent to achieve market demand, while PVA slurry and dyes have high color chroma and difficult to break down organic matter in the wastewater, if the biological treatment of wastewater treatment more difficult to achieve domestic effluents standards.
Application Advanced Oxidation Processed (AOPs) deal with organic pollutants has become the main trend now in recent years.But Fenton series of processing procedures have high operating costs and sludge production and other issues, and these problems are directly related to the control of dosage. In this study, the dye wastewater was treated with nanoscale zero-valent iron and Fenton reaction, and with the automatic monitoring system DO / ORP microcomputer controller as a control parameter, establishment of continuous zero-valent iron combined Fenton control technology, through the change of parameters can be monitored to determine the oxidation-reduction, and find out the optimal operating conditions and H2O2 / Fe2 + in dosage.
Dyeing wastewater was treated by continuous dosing in study,during the experiment process monitoring DO and ORP, according to the results, DO and ORP can be used as control parameters of hydrogen peroxide dosing, with the dosing of different control conditions will change. And the H2O2 / Fe2 + ratio in different concentration range was different, the cost of hydrogen peroxide is higher than that of ferrous iron,while this study explores how to control the amount of hydrogen peroxide by automatic monitoring, and determine the best H2O2 / Fe2 + dosing ratio.
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