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研究生:彭子玟
研究生(外文):Peng,Tzuwen
論文名稱:臭氧處理濃縮廢液之研究
論文名稱(外文):Treatment of membrane concentrate by ozonation
指導教授:游庶海
指導教授(外文):You,Shuhai
口試委員:郭文旭莊連春
口試委員(外文):Kuo,WenshiuhJuang,Lianchuen
口試日期:2012-10-05
學位類別:碩士
校院名稱:國立聯合大學
系所名稱:環境與安全衛生工程學系碩士班
學門:工程學門
學類:環境工程學類
論文種類:學術論文
論文出版年:2012
畢業學年度:101
語文別:中文
論文頁數:144
中文關鍵詞:臭氧RO逆滲透濃縮廢液清水回收率
外文關鍵詞:OzonationReverse osmosisConcentrateRecovery rate
相關次數:
  • 被引用被引用:0
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  • 下載下載:6
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摘要
本研究飼水是利用TFT-LCD面板廠之有機放流水經過RO薄膜程序過濾後所取得之RO濃縮廢液,主要實驗以濃縮廢液經過臭氧氧化處理後再導入RO薄膜程序中,以用來改善水質以及滲透通量的提高,期望能增加濃縮廢液之回收再利用。
研究中探討臭氧氧化處理以及RO薄膜程序之結合,利用不同清水回收率(滲透液體積/原飼水體積)之濃縮廢液和不同濃度之臭氧,並且將RO薄膜程序操作壓力控制在60 psi(4 Kg/cm2)與飼水溫度在25 ℃,對於水質改善與RO滲透通量之影響。
研究結果顯示,添加臭氧處理後,在275 nm至400 nm範圍吸收度去除率以臭氧電壓為65V(11.7mg/L)為最佳,原水(62%)、20%濃縮廢液(58%),40%濃縮廢液(50%)和60%濃縮廢液(45%),對於色度的去除有不錯的效果,並且使水中粒徑有稍微凝聚的現象。對於滲透通量衰減比較,經臭氧氧化後之滲透通量衰減可降低5%左右,在清水回收率以臭氧電壓越高清水回收率則會有些微提升。滲透液水質分析,臭氧氧化後之滲透液水質情況改善良好。然而TOC積垢量,會依清水回收率越高,使得濃縮廢液越少,溶質停留在膜管內的量越多,造成薄膜阻塞越嚴重,造成去除率降低。在薄膜積垢變化,可由SEM圖可發現無添加臭氧處理積垢較密集且分布廣泛,但經臭氧處理後積垢量變的鬆散且分布不均勻,也間接影響到EDS分析之數值。
本研究中顯示臭氧處理與RO逆滲透薄膜程序之結合,再適當臭氧加入量有效改善滲透液水質,能減輕滲透通量衰減程度,亦能增加清水回收率,使得廢水可回收量提升。
Abstract
The feedwater of this study is collected from the RO concentrate of TFT-LCD effluent. The concentrate is treated after ozone oxidation, then imported to RO membrane processes to improve water quality and permeate flux, expected to increase the recycling of concentrate.
Study of the combination of ozonation and RO membrane was processed under below parameters: different feed water recovery (permeate volume / original feed water volume) of concentrated fed water and different concentrations of ozone. All test of RO film program were controlled under 60 psi (4 Kg/cm2) operating pressure and 25oC feed water temperature.
The research results show that ozonation can effectively reduce the feed water color and the permeate flux decay when the applied voltage was 65 V. The higher the voltage applied, the higher recovery rate was got. However, fouling caused by organic matter was increased, when increase the higher water recovery. It indicated that the concentrate would be less, and the solute stays within the membrane tube would be more, resulting in the more serious film blocking.
This study shows that the combination of ozonation and RO membrane can effectively improve the permeate water quality and reduce the degree of permeate flux decay. Therefore, appropriate dosing of ozone can increase the recovery rate of wastewater.
目錄
摘要 I
ABSTRACT III
目錄 IV
圖目錄 VII
表目錄 XI
第一章 前言 1
1.1 研究動機 1
1.2 研究目的 3
第二章 文獻回顧 5
2.1 薄膜過濾程序 5
2.1.1 薄膜種類與過濾機制 6
2.1.2 薄膜材質、過濾方式及模組 10
2.1.3 濃度極化 15
2.1.4 薄膜積垢 17
2.1.5 薄膜質量平衡 20
2.2 濃縮廢液處理技術 21
2.3 臭氧處理濃縮廢液 25
2.4 臭氧反應之作用機制 32
第三章 研究方法 37
3.1 研究流程 38
3.2 實驗藥品與材料 42
3.3 實驗儀器 43
3.4 研究裝置 44
3.5 實驗設計與操作方法 48
3.5.1 實驗設計 48
3.5.2 實驗操作方法 49
3.6 分析項目與方法 50
3.6.1 水質分析和儀器分析 50
3.6.2 臭氧濃度分析方法 54
第四章 結果與討論 57
4.1 實驗飼水之水質特性 58
4.1.1 原飼水之水質分析 58
4.1.2 濃縮廢液水質分析 61
4.1.3 水樣粒徑分佈及陰陽離子分析 64
4.2 臭氧處理進流水 74
4.2.1 臭氧處理原水及濃縮廢液之水質影響 76
4.2.2 臭氧氧化水樣粒徑分布與陰陽離子分析 85
4.3 逆滲透(REVERSE OSMOSIS, RO)程序 96
4.3.1 逆滲透濾膜之初始通量 96
4.3.2 逆滲透薄膜之廢水通量 98
4.3.3 未經臭氧處理經RO薄膜程序滲透液之水質變化 100
4.3.4 RO薄膜程序之質量平衡(水樣未經臭氧氧化處理) 104
4.3.5 RO薄膜程序之表面觀察(水樣未經臭氧氧化處理) 106
4.4 臭氧氧化處理後通入RO薄膜程序 111
4.4.1 臭氧氧化處理與RO薄膜程序滲透通量之關係 111
4.4.2 臭氧氧化處理後RO滲透液之水質影響 116
4.4.3 RO薄膜程序之質量平衡(水樣經臭氧氧化處理) 124
4.4.4 RO薄膜程序之表面觀察(水樣經臭氧氧化處理) 128
第五章 結論 136
5.1 結論 136
參考文獻 138

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