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題名 | 利用厭氧氨氧化程序進行生物除氮之研究=Biological Nitrogen Removal via Anammox Process |
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作者 | 馮宇柔; 夏聰惠; 何俊明; Feng, Yu-jou; Hsia, Tsung-hui; Ho, Chun-ming; |
期刊 | 東南學報 |
出版日期 | 20090700 |
卷期 | 34 2009.07[民98.07] |
頁次 | 頁207-217 |
分類號 | 445.463 |
語文 | chi |
關鍵詞 | 生物除氮; 自營脫硝; 厭氧氨氧化; 部分硝化; Biological nitrogen removal; Autotrophic denitrification; ANAMMOX; Partial nitrification; |
中文摘要 | 摘 要 水體中若含有過量之氨氮,除了影響生態環境之外,還對人體健康造成危害。傳 統之生物除氮程序包括硝化及脫硝兩階段,反應槽之建造成本較高且操作較複雜,新 式之生物除氮程序乃利用部分硝化及厭氧氨氧化之原理除氮,可有效縮短傳統生物硝 化及脫硝流程,節省氧氣需求量以達降低處理成本之目標。 在低碳氮比廢水或地下水之生物除氮技術發展方面,部分硝化程序係將廢水中大 約一半之氨氮氧化為亞硝酸鹽氮,而後續之厭氧氨氧化程序則以氨氮為電子供給者並 以亞硝酸鹽氮為電子接受者,將部分硝化反應槽出流水之殘餘氨氮與亞硝酸鹽氮一併 轉變為氮氣。 本研究乃基於上述原理,藉由適當之操作條件控制,進行本土化自營性生物除氮 技術之開發。廢水須先行部分硝化至氨氮與亞硝酸鹽氮之濃度大致相等,之後再進行 厭氧氨氧化反應,此外並以分子生物技術進行菌相之定性與定量分析,以為日後反應 槽實際應用之參考。 在厭氧氨氧化微生物之馴養方面,以一般都市污水處理廠之活性污泥於適當條件 馴養約四個月,即可獲得具有穩定活性之Anammox biomass,其沉降性良好呈淡褐色 且無臭味。研究結果顯示NO2 -之消耗速率較NH4 +為快,在適當之濃度範圍內且二者初 始濃度相近時,NO2 -在短時間內有將近100%的去除率,過多的NO2 -對於Anammox 反 應活性有顯著之負面影響,使除氮效率受限。 |
英文摘要 | ABSTRACT Many studies focused on the development of autotrophic nitrogen elimination technology such as combination of partial nitrification and the Anammox process, which is regarded as a promising new method for removing nitrogen from wastewater or groundwater with a low C/N ratio and a fairly large quantity of ammonium. In this study, synthetic wastewater with an appropriate NH4 +/ NO2 - ratio was used to Anammox process to ensure total nitrogen removal. Molecular biotechnology method was applied to identify the bacterial community of the biofilm and the acclimated biomass. Regarding the acclimation of Anammox biomass, the concentrated activated sludge collected from a local municipal WWTP was used as seed sludge. The macroscopic appearance of the enriched biomass remained a light brown color after cultivation under appropriate conditions for about 4 months. Additionally the settling efficiency of the biomass was very remarkable; the consumption of ammonium and nitrite resulted in the production of N2 and a small amount of nitrate. Anammox is denitrification of nitrite with ammonium as the electron donor to yield nitrogen gas, in which reaction nitrite is consumed faster than ammonium. |
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