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電解Fenton處理染整廢水自動控制之研究

Dosage Control of the Fered-Fenton for treating texile Wastewater

作者:高銘謙
畢業學校:國立聯合大學
出版單位:國立聯合大學
核准日期:2010-09-13
類型:Electronic Thesis or Dissertation
權限:Copyright information available at source archive--National United University....

中文摘要

染整程序使用大量染料,所產生廢水之色度值遠高於國內管制值3WL 550 ADMI。染整廢水中所含之PVA漿料及染料具有很高色度以及難分解有機物質,若不當排入河川中會對水域環境造成嚴重污染,電解Fenton在染整廢水處理之應用,大部份染整廠之加入藥劑多憑操作人員經驗及視當日廢水情況而定,如添加不足將造成放流水色度過高,添加過量則增加成本。
溶氧能夠判斷Fenton反應是否中止,因此本研究利用pH/ORP/DO/導電度作為控制參數,建立電解Fenton批次式程序之亞鐵離子濃度變化以及判斷系統反應終止時間之自動化與最佳化控制技術。在系統溶氧變化圖發現到當溶氧上升之時間點因Fenton反應終止使得系統中並無氫氧自由基繼續降解有機物,COD去除率趨於平緩,所以能將此時間點作為判斷系統反應終止時間的最佳控制點,將pH、電流量、亞鐵離子加藥量、過氧化氫加藥量、起始溶氧值、起始ORP值,以多變數回歸及類神經網路預測系統反應終止時間,R2分別可達0.7616和0.9213,皆有非常良好的相關性,因此可利用上述監測參數來判斷反應終止時間。

英文摘要

The dyeing and finishing processes used a lot of dyestuffs. The color intensity of the wastewater is much higher than permitted by law, which has a current value of 3WL 550 ADMI. Besides high coloration, the wastewater also contains PVA size and recalcitrant organic substances. If not properly treated, the disposed wastewater discharging into the rivers will cause a serious pollution problem to the environment. The regents used by most of the dye works depend largely upon the workers experience and the daily condition of the wastewater. Insufficient amount of treatment reagent would result in the discharge of wastewater containing high color intensity, however the exceed addition of treatment reagent would increase the cost.
Fenton reaction of dissolved oxygen to determine whether the suspension, so this study, pH / ORP / DO / conductivity as the control parameter, Fenton batch electrolytic process of ferrous ion concentration and determine system response time of the termination of automation and optimization control technology. Changes in dissolved oxygen in the system map was found to increase the time when the dissolved oxygen due to termination of Fenton reaction hydroxyl radicals makes the system not to degrade organic matter, COD removal rate tended to be stable, they are able to judge this time as the system response termination of the optimal control point of time, The pH, electrical current, ferrous ion dosage, hydrogen peroxide dosage, initial dissolved oxygen values, initial ORP value, using multivariate regression and neural network prediction system response time of termination, R2 respectively up to 0.7616 and 0.9213, there are very good correlation, it can be monitored using the above parameters to determine response time of termination.


指導教授 - 余瑞芳

委員 - 鄭文伯

召集委員 - 陳鶴文

委員 - 吳志超


 

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