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研究生:林哲民
研究生(外文):Lin Jer-Min
論文名稱:利用UV/H2O2、O3及UV/O3光化學氧化法處理反應性染料廢水之研究
論文名稱(外文):Decolorization of Reactive Dye Wastewater Using UV/H2O2 Ozonation and UV/O3 Advanced Oxidation Processes
指導教授:喻家駿
指導教授(外文):Yu Jya-Jyun
學位類別:碩士
校院名稱:逢甲大學
系所名稱:環境工程與科學學系
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:2001
畢業學年度:89
語文別:中文
中文關鍵詞:反應性染料紫外光/過氧化氫臭氧紫外光/臭氧色度去除率
外文關鍵詞:REACTIVE DYEUV/H2O2OzonationUV/O3COLORREMOVAL RATE
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染料工業為特殊化學品工業之一,隨著染料科技進步,染料成分日趨複雜。染料的用途很廣,產生之廢水主要為高COD、高色度及生物難分解性。目前處理染整廢水可以用活性碳吸附或化學混凝來處理,而此類之處理技術往往只是將污染物由液相轉為固相,然而最終沉降污泥必須進一步處置,故染整廢水常使用生物或氧化法處理。光化學氧化法是一種較新的廢水處理技術,其最主要優點是能將污染物在短時間內完全破壞,使其礦化成最終安定產物。目前染整廢水之高級氧化處理不斷被提出討論,尤其是以紫外光(UV)結合H2O2、TiO2、O3之光催化及Fenton、超音波等高級氧化法,最具成效。本研究以常用反應性染料之其中6種,其C.I.碼分別為Yellow-17、Blue-71、Blue-19、Black-5、Orange-13及Orange-16來做為研究對象,探討以光化學氧化法處理染料廢水之色度問題,建立一套有效處理應用技術。本研究之處理技術有三種,第一係利用高瓦數之紫外光源(550W),配合強氧化劑H2O2之添加亦即UV/H2O2;第二是以通臭氧(O3)直接氧化分解水溶液中之染料分子;第三除了通臭氧外並照射UV,以便探討紫外光與臭氧結合是否能更有效的分解染料分子。本研究也詳細探討氧化劑之不同添加劑量對染料脫色效果之比較並計算動力學反應參數。實驗結果顯示,使用UV/H2O2程序處理500mg/L之上述六種染料廢水,在添加15.5g/L之H2O2下經25分鐘的紫外光照射,去除效率分別為82﹪、34﹪、100﹪、100﹪、100﹪、100﹪。在相同濃度下直接通O3並控制在5g/hr之O3產生率,經40分鐘處理其去除效率分別為100﹪、92﹪、100﹪、100﹪、100﹪、90﹪。本研究也嘗試在通O3下配合紫外光之照射,探討紫外光對染料分解之影響,由於照射紫外光使染料廢水之水溫升高,導致O3在染料廢水之溶解度下降,所以臭氧配合紫外光之照射並不能有效的提高染料分解效率。故由此可得知,利用UV/H2O2及單獨添加O3系統是較佳的處理程序。
The photochemically oxidative decolorization of wastewater containing with textile dyes was studied using a batch reactor. The chemical characteristics of dyes are pretty stable in the aqueous solution, therefore, the biological treatment methods are ineffective for decolorization of dye stuffs in the effluent stream. The other conventional wastewater treatment techniques, including ultrafiltration, chemical coagulation, adsorption, and solvent extraction are not very efficient in dealing with the dye wastewater. As the discharged regulations are becoming more stringent, consequently, the color removal in dye effluent is presently one of the most important subjects in pollution control. This study was conducted to investigate the degradation efficiency for treating reactive dyes in water solution using UV/H2O2, O3 and UV/O3 photochemical oxidation process.
The photochemical oxidation is one of the advanced systems for wastewater treatment. This method involves the formation of hydroxyl radicals(·OH)in the aqueous phase through ultraviolet photolysis of hydrogen peroxide and ozone. Experiments were conducted to reduce the ADMI value of dye wastewater. Six commercial reactive azo dyes were chosen for this study. The kinetic aspects of the UV/H2O2, O3 and UV/O3 treatment processes were also evaluated for six reactive dyes. The experiment results showed that the UV/H2O2, O3 and UV/O3 process for a 500mg/L of dye solution, the color could be totally removed within 40 min under the studied condition. The H2O2 and O3 dosage may affect the color removal in a positive way. However, owing to the temperature effect of the ozone soluble, the photodegradation of the dye by UV/O3 was not very effective compared with that of O3 system.
中文摘要…………………………………………………………………...…Ⅰ
英文摘要………………………………………………………………..…….Ⅱ
目錄……………………………………………………………………...……Ⅲ
表目錄……………………………………………………………………...…Ⅴ
圖目錄………………………………………………………………...………Ⅵ
第一章 前言…………………………………………………………………...1
1.1 研究緣起…………………………………………………………………..1
1.2 研究目的及內容…………………………………………………………..2
第二章 文獻回顧……………………………………………………….….….3
2.1染料之文獻回顧…………………………………………………….……..3
2.1.1染料的分類………………………………………………………………3
2.1.2染料基本結構……………………………………………………………5
2.1.3本研究染料之基本性質…………………………………………………5
2.1.4台灣染料污染現況………………………………………………………8
2.1.5目前法規之要求…………………………………………………………9
2.2光化學氧化法之應用…………………………………………………..…10
2.2.1氧化劑H2O2基本性質和應用…………………………………………..11
2.2.2氧化劑O3基本性質和應用……………………………………………..15
2.2.2.1臭氧的發現……………………………………………………………15
2.2.2.2分子結構及性質………………………………………………………15
2.2.2.3臭氧在水中之自身分解………………………………………………17
2.2.2.4臭氧在空氣中之自身分解……………………………………………19
2.2.2.5臭氧的危險性…………………………………………………………19
2.2.2.6臭氧在水處理上的應用………………………………………………20
2.2.2.7影響UV/O3系統之操作參數…………………………………………23
第三章 實驗方法與設備…………………………………………………….26
3.1實驗之藥品及器材……………………………………………………….26
3.1.1實驗之藥品……………………………………………………………..26
3.1.2實驗設備…………………………………………………………….26
3.2實驗裝置………………………………………………………………28
3.3實驗步驟及方法………………………………………………………….30
3.3.1以UV/H2O2系統來處理染料廢水………………………………….…30
3.3.2以通O3及UV/O3系統來處理染料廢水………………………………32
3.3.3背景實驗之實驗步驟…………………………………………………...34
3.3.4染料溶液之檢測分析…………………………………………………...34
3.3.5染料分解反應速率常數之計算………………………………………...36
第四章 結果與討論………………………………………………………….37
4.1 背景實驗…………………………………………………………………37
4.1.1 染料廢水不照紫外光之背景實驗…………………………………….37
4.1.2 染料廢水單純照紫外光實驗………………………………………….37
4.1.3 染料廢水之紫外光/可見光譜…………………………………………37
4.2 UV/H2O2系統之實驗…………………………………………………….38
4.2.1 不同染料初始濃度之影響…………………………………………….38
4.2.2 添加不同H2O2劑量對染料廢水之影響………………………………39
4.2.3 pH值對染料廢水之影響……………………………………………….40
4.2.4 UV/H2O2系統對色度值及COD值之影響…………………………….41
4.3 UV/O3系統之實驗………………………………………………………..42
4.3.1 單獨添加O3劑量對染料廢水之影響…………………………………42
4.3.2 利用UV/O3系統對染料廢水之影響………………………………….44
4.3.3 pH值對UV/O3系統之影響……………………………………………45
4.3.4 單獨添加O3系統對色度值及COD值之影響………………………..46
第五章 結 論………………………………………………………………...47
第六章 參考文獻……………………………………………………….……50
附錄………………………………………………………………………….119
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