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  • 學位論文

程序批次活性污泥法與固定化細胞法 對於含氮廢水去除反應特性之比較

The Characterization of Applying Sequencing Batch Reactor and Immobilized Cell System to Remove Nitrogen from Wastewater

指導教授 : 許垤棊
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摘要


本研究探討程序批次活性污泥法(SBR)與固定化細胞法對於高含氮廢水的硝化與脫硝現象的比較。在SBR系統中,水溶液中的氨氮濃度由於受到好氧、厭氧以及後曝氣等程序切換控制的影響。起初,氨氮濃度的時間變化呈現急劇的階段式下降。曝氣時,硝化反應使得硝酸氮累積之後;然後,於厭氧過程脫硝反應再將硝酸氮轉變成氮氣。然而,在固定化系統中,因硝化與脫硝反應同時進行,氨氮濃度的時間變化則呈現指數遞減的趨勢。由亞硝酸氮與硝酸氮的濃度時間變化,顯示固定化系統由於硝化與脫硝反應同時進行,最後形成氮氣。比較兩者的除氮效率,固定化系統優於SBR系統。

並列摘要


For removing nitrogen from highly nitrogen-containing wastewater, nitrification and denitrification processes applying the sequencing batch reactor (SBR) system and the immobilized cell system were investigated. During the nitrification in SBR process, the time course of NH4+-N concentration exhibited a dramatic and stepwise decrease due to the on/off switch of aeration in the SBR system. Ammonia was converted to nitrate in the aeration stage, and then, it was converted to N2 in the anaerobic stage. However, in the immobilized cell system, the nitrification reaction and the denitrification reaction occurred simultaneously explain the exponential decrease in NH4+-N concentration. In overall, the immobilized cell system is more efficient than the free cell system in wastewater-nitrogen removal.

並列關鍵字

SBR

參考文獻


Bouchard, D. C., Williamms, M. K., Surampalli, R., Y. ,〝Nitrate Contamination of Ground water: Sources and Potential Health Effects〞,J.AWWA, September,(1992)
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Yang, C. W., Pattarkine, V. M. and McCintock, S. A ,〝Nitrification kinetics in single-sludge biological nutrient removal activated sludge system〞,Wat. Sci. Tech.,Vol.23, No. 6,(1990)

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