頁籤選單縮合
題 名 | 硝化菌、厭氧氨氮化菌生物固定化最佳條件之探討=Study on Optimal Conditions for Immobilized Nitrifying and Anammox Bacteria |
---|---|
作 者 | 夏聰惠; 馮宇柔; 何俊明; 張育銘; 李忠倫; | 書刊名 | 東南學報 |
卷 期 | 36 2011.07[民100.07] |
頁 次 | 頁143-152 |
分類號 | 445.463 |
關鍵詞 | 氨氮; 生物固定化; 厭氧氨氧化; Ammonia; Immobilization; ANAMMOX; |
語 文 | 中文(Chinese) |
中文摘要 | 傳統之生物除氮技術包括好氧硝化及無氧脫硝兩個階段,好氧硝化菌需大量氧氣供應,為能源消耗之主要來源;而一般異營脫硝菌則需外加有機碳源,不但增加處理成本,亦有處理水殘留COD之問題。因此,藉由部分硝化(partial nitrification)程序,將氨氮部分氧化成亞硝酸鹽,再將氨氮與亞硝酸鹽一併轉換成氮氣,此即所謂「厭氧氨氧化」(Anammox, Anaerobic Ammonium Oxidation)程序,因縮短除氮時程,減少能源消耗,有漸受重視之趨勢。厭氧氨氧化菌於無氧或缺氧之環境下生長,而所需之碳源為水中之碳酸根及二氧化碳,該菌生長緩慢,具有廢棄污泥量少之優點,此種自營性生物除氮程序結合生物固定化技術更具穩定性強、生物密度高、耐毒性、耐高負荷、易於固液分離、污泥產量少等優點,在廢水除氮處理之領域有廣闊之應用前景。本研究先以微生物馴養為主,待各類菌種馴養完成後分別加以固定化,再針對不 同操作條件進行各類微生物固定化之性能評估。固定化條件中以聚乙烯醇(PVA) 100℃ 加熱,待氣泡上浮2 hrs後,冷凍24hrs,放置室溫回溫24 hrs為較佳。 |
英文摘要 | In tradition, biological nitrogen removal process includes two steps: aerobic nitrification and anaerobic denitrification. Much oxygen is needed and is the main source of energyconsumption in aerobic nitrification. Extra addition of organic carbon source in anaerobic denitrification increases treatment cost and COD in effluent. Therefore, ammonia is partially oxidized to nitrite in partial nitrification and then the remaining ammonia and the produced nitrite are simultaneously transformed to nitrogen gas in anaerobic ammonium oxidation (ANAMMOX) reaction, is the trend for modern nitrogen removal processes. In this study, nitrifying bacteria and Anammox biomass were acclimated first, and then immobilization technique was used to entrap the microbes to enhance the characteristics including stability, toxicity endurance, and shock loading endurance. Different conditions were performed to evaluate the optimal condition for nitrogen removal. PVA (Poly Vinyl Alcohol) was used to immobilize these microbes and was heated to 100℃. After two hours for foams floating to the surface of solution, the immobilized samples were placed in -20℃ refrigerator for freezing 24 hours and then thawed to room temperature for 24 hours. These operation conditions showed the best result for immobilized biomass to eliminate the nitrogen. |
本系統中英文摘要資訊取自各篇刊載內容。