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研究生:賴金德
研究生(外文):Kin-Te Lai
論文名稱:垃圾滲出水脫氮過程及其對電解氧化之影響
論文名稱(外文):Removal of Ammonium and its Effect on Electrochemical Oxidation in the Treatment of Landfill Leachate
指導教授:張祖恩張祖恩引用關係
指導教授(外文):Juu-En Chang
學位類別:碩士
校院名稱:國立成功大學
系所名稱:環境工程研究所
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:1994
畢業學年度:82
語文別:中文
論文頁數:102
中文關鍵詞:滲出水氨氮化學需氧量電解氧化
外文關鍵詞:leachateammoniumCODelectrochemical oxidation
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本研究將各種脫氮處理程序應用在滲出水之處理上,以瞭解其適用性,並
將其出流之滲出水進行電解氧化處理,比較各試程有機物之去除情形。實
驗結果顯示硝化槽在滲出水進流氨氮濃度2800mg/L的基質操作下,HRT控
制在7天時,仍可達成完全硝化,顯示滲出水硝化處理非常可行;而程序批
次污泥法(SBR)於氨氮進流濃度1500mg/L,HRT=12天以及外加碳源醋酸鈉
在ΣNaAc/ΣNOx-N為9之操作條件下,可將滲出水中氨氮完全硝化及脫硝
,且COD可去除40%,由24小時循環操作流程監測可知脫硝速率甚為迅速,
因此欲提升負荷時可將厭氧時段縮短而將好氧時段延長至7小時以上,則
能使更高濃度氨氮硝化完全。滲出水氨氮氣提處理之結果顯示,在
pH=12.8時曝氣前段氨氮快速脫除,而後趨於緩慢,經曝氣72小時後,去
除率可達97%。電解實驗方面,比較(a)原滲出水、(b)硝化槽出流水、(c)
SBR出流水及(d)經氣提而中和後滲出水等4種水樣在相同COD水質條件下之
電解結果,得知以硝化槽出流水之COD去除效果最佳,其餘三者差異不大;
添加氯鹽後,各試程均可提升去除速率,而仍以硝化槽出流水效果最佳,
惟各流程出流水電解效果優劣之趨勢則更為明顯,依次為b>d>c>a。然而
以包含氨氮及COD去除之總電流效率而言,則是以含高濃度氨氮之原滲出
水對電能之利用最為充分。

Landfill leachate always contains high concentration of
ammonium, which would depress COD removal in electrochemical
oxidation process. Consequently, removal of ammonium as a pre-
treatment before electrochemical oxidation was planed to
improve the COD removal in electrochemical oxidation treatment
of landfill leachate. In this study, three processes including
nitrification, sequencing batch reactor(SBR), and air stripping
were adopted to investigate the feasibility for the removal of
ammonium in landfill leachate. In addition, the effluents from
the above-mentioned processes were electrolyzed to investigate
the influences of these processes on the treatment performance
of electrochemical oxidation. Experimental results showed that
nitrification process was feasible for the removal of ammonium
from landfill leachate. As influent NH4-N concentration and HRT
was controlled at 2800mg/L and 7 days, respectively, ammonium
in the landfill leachate was completely nitrified. SBR
performed nitrification/denitrification well when 1500mg/L of
NH4-N was feeded under a 12-day HRT, and an external carbon
source(sodium acetate was used)of ΣNaAc/ΣNOx =9. Air
stripping reduced ammonium strength readily, in which about 97%
of ammonium in the landfill leachate was removed after aeration
for 72 hours at pH 12.8. In electrochemical oxidation was
faster than the raw leachate. The enhancing effect of
nitrification may be due to the indirect oxidation effect of
nitrate radical (NO3.), which is induced from NO3-, promotes
the removal of COD in electrochemical oxidation process. In
addition, comparing the electrolysis results from various
processes, it discovers that both SBR and air stripping did not
significantly improve the COD removal of electrochemical
oxidation process. In this study, the efficiency of
electrochemical oxidation for the removal of COD in various pre-
treated leachates was as follow, nitrification>air stripping>
SBR>raw leachate.

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