博碩士論文 92336004 詳細資訊


姓名 顧華山(Hua-Shan Ku)  查詢紙本館藏   畢業系所 環境工程研究所在職專班
論文名稱 新型改質矽藻土應用於吸附實廠含銅廢水之探討
(Adsorption of Copper Containing Wastewater by New Type Modified Diatomite)
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摘要(中) 本研究係以高透水性濾材,運用溼式技術,製出高效能低成本之重金屬吸附性濾材。矽藻土的改質方法,係將矽藻土採用酸液浸泡、鹼液浸泡及表面植入氫氧化鐵等方式,進行活化改質。經恆溫吸附試驗結果發現,鹼性及表面植鐵鹽對吸附銅的能力,明顯優於酸性及原始條件,且適用於Langmuir 吸附模式。此外經評估改質效能及經濟效益後,本研究選定以鹼性改質之矽藻土,進行管柱試驗和實廠含銅廢水之模型處理試驗。
由動力吸附試驗結果發現,鹼性改質法較原始矽藻土之吸附量及去除效率明顯提升;由管柱實驗結果得知,於1000BV(bed volumes)廢水通過之前,對於銅的去除效率為98%以上,最後由實廠含銅廢水之管柱模型試驗結果確知,該廠之3 ppm含銅放流水,經矽藻土管柱模型處理後,去除率為65~84%,可達到進一步降低重金屬銅濃度及符合更嚴格的排放要求。
摘要(英) This study was to develop a high efficiency and low cost modified diatomite absorbent for copper removal from wastewater. The diatomite was modified and activated by three ways, which were acid etching, alkaline etching and iron hydroxide coating. According to the results of isotherm adsorption test, the efficiencies of copper adsorption by alkaline etching and iron hydroxide coating diatomite were better than those of acid etching and original diatomite. The adsorption capacity of copper by modified diatomite was fitted to Langmuir adsorption model. After the evaluation of removal efficiency and economic feasibility, alkaline modified diatomite was selected to run column and pilot scale adsorption tests.
The results of kinetic adsorption test showed that the alkaline modified diatomite could enhance copper adsorption capacity and removal efficiency as compare to that of the original diatomite. The results of laboratory scale column tests revealed that the copper removal efficiency was greater than 98% before 1000 bed volumes of wastewater passed through. The copper removal efficiencies of 65~84% were achieved by pilot scale treatment facility for treating real wastewater containing 3 ppm of copper. Therefore, the utilization of alkaline modified diatomite could further reduce the copper concentration and was feasible to meet the more restricted discharge criteria.
關鍵字(中) ★ 廢水處理
★ 吸附
★ 含銅廢水
★ 矽藻土
關鍵字(英) ★ wastewater treatment
★ adsorption
★ copper
★ diatomite
論文目次 摘要 I
Abstract II
目錄 IV
表目錄 VI
圖目錄 VII
第一章 前言 1
1-1 研究緣起 1
1-2 研究目的 3
第二章 文獻回顧 4
2-1 矽藻土基本特性 4
2-2 矽藻土相關文獻研究 9
2-3 表面改質材料吸附重金屬之研究 12
2-4 吸附模式理論 18
第三章 實驗方法與設備 28
3-1 矽藻土活化改質程序 29
3-2 分析方法 36
3-3 吸附效能實驗 38
3-4 管柱與模廠試驗 40
第四章 結果與討論 43
4-1 改質方法效能評估 43
4-2 吸附動力試驗 67
4-3 pH 值對活化改質矽藻土吸附銅之影響 71
4-4 競爭吸附試驗 73
4-5 管柱試驗分析 74
4-6 實廠試驗與評估 75
4-7 經濟效益評估 83
第五章 結論與建議 85
5-1結論 85
5-2建議 87
參考文獻 89
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指導教授 曾迪華(Dyi-Hwa Tseng) 審核日期 2009-7-28
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