- 學位論文
利用結合氧氣供給控制設備之低碳衝擊厭氧氨氧化菌系統提升氨氮去除效率
Enhanced nitrogen removal by low carbon impact Anammox bioreactor with oxygen-controlled supply
摘要
傳統生物處理法需要藉由大量曝氣提供足夠氧氣使微生物維持活性，佔總電力成本50%，對於污水廠而言是相當可觀的成本，且傳統生物處理法也有大量污泥及溫室氣體等之問題，不僅提高營運成本也增加了二次污染之問題。 厭氧氨氧化技術為近年來受到重視之生物處理法，相較於傳統生物處理法，厭氧氨氧化技術降低曝氣量、減少污泥產生、減少溫室氣體排放、減少藥劑添加，有效的節省操作成本，但厭氧氨氧化技術對於環境條件較為嚴苛，且啟動時間較長，操作難度相對較高。根據應用厭氧氨氧化技術實廠，曝氣成本相較傳統污水廠減少50%左右，只佔總電力成本27%，但實際上成本依舊不容忽視，因此透過本研究之設計，期望在提升氨氮去除效率之情形下減少電力消耗。 本研究實驗設計初期，減少曝氣頻率提高亞硝酸鹽濃度，提升Anammox活性使其快速啟動，中後期逐漸降低亞硝酸鹽濃度減少額外藥劑成本，配合提升曝氣頻率提高氨氧化細菌(ammonia-oxidizing bacteria，AOB)活性，維持亞硝酸鹽濃度；根據實驗結果，研究之整體氨氮去除效率呈現上升趨勢； SAA及qPCR結果表明Anammox活性顯著上升，證實本研究有效使Anammox快速啟動並且穩定生長。透過電力分析計算，本研究透過曝氣控制相較於24小時無間斷曝氣，減少87%之電力消耗，達到節能之效果。
並列摘要
Traditional biological treatment methods need to provide sufficient oxygen to maintain the activity of microorganisms by a large amount of aeration, accounting for 50% of the total electricity cost, which is a considerable cost for the sewage plant, and the traditional biological treatment method also has a large amount of sludge and greenhouse gases. The problem is not only to increase operating costs but also to increase secondary pollution. Anaerobic ammonium oxidation technology is a biological treatment method that has received much attention in recent years. Compared with traditional biological treatment methods, anaerobic ammonium oxidation technology reduces aeration, reduces sludge generation, reduces greenhouse gas emissions, reduces chemical addition, and saves effectively. Operating costs, but anaerobic ammonium oxidation technology is more stringent for environmental conditions, and the startup time is longer, and the operation difficulty is relatively high. According to the application of anaerobic ammonium oxidation technology, the cost of aeration is reduced by about 50% compared with the traditional sewage treatment plant, accounting for only 27% of the total electricity cost. However, the cost is still not negligible. Therefore, through the design of this study, it is expected to increase ammonia nitrogen. Reduce power consumption in the case of removal efficiency. In the initial stage of the experimental design, the aeration frequency was increased to increase the nitrite concentration, the Anammox activity was increased to make it start quickly, and the nitrite concentration was gradually reduced in the middle and late stages to reduce the additional cost of the agent, and the ammonia-oxidizing bacteria were increased in combination with increasing the aeration frequency. Bacteria, AOB) activity, maintaining nitrite concentration; according to the experimental results, the overall ammonia nitrogen removal efficiency of the study showed an upward trend; SAA and qPCR results showed that Anammox activity increased significantly, which confirmed that the study effectively enabled Anammox to start quickly and grow stably. Through power analysis, this study achieved 87% reduction in power consumption through aeration control compared to 24 hours of no-zone aeration, achieving energy savings.
參考文獻
延伸閱讀
- 鄒文博（2012）。結合固定化技術與厭氧氨氧化程序於廢水生物除氮之研究〔博士論文，國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2012.11016
- 曾文宏（2007）。添加低碳數飽和碳氫化合物氣體於零價鐵流體化床處理氮氧化物之研究〔碩士論文，國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-3107200718200300
- 馮宇柔（2008）。利用通氣式薄膜生物反應槽與厭氧氨氧化程序進行廢水除氮之研究〔博士論文，國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2008.00310
- 許文熙（2007）。應用碳氣化方法於零價鐵流體化床處理燃燒廢氣中一氧化氮之研究〔碩士論文，國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-2508200700213200
- 王佑晴（2010）。Simultaneously Removal of Carbon and Nitrogen Using Modified Entrapped Mixed Microbial Cell Process〔碩士論文，國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2010.10719