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題 名 | Nitrogen Removal from Activated Sludge Process (ASP) Treated Municipal Wastewater by Biofilm Channeling=活性污泥法處理後之家庭污水再經生物擔體渠道淨化氮化物之特性探討 |
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作 者 | 許鎮龍; 歐陽嶠暉; 翁煥廷; | 書刊名 | 中國工程學刊 |
卷 期 | 24:5 2001.09[民90.09] |
頁 次 | 頁595-600 |
分類號 | 445.46 |
關鍵詞 | 轉化路徑; 生物膜; 硝化; 脫硝; Pathways; Biofilm; Nitrification; Denitrification; |
語 文 | 英文(English) |
中文摘要 | 探討活性污泥法處理後之家庭污水,於層流及亂流之流況下,再經生物擔體渠道 淨化氮化物轉化之路徑及動力行為。研究發現渠道內之硝化及脫硝速率深受流速之影響,於 起始亂流之流況,可得較佳之總凱氏氮及總氮去除速率。總凱氏氮及總氮於渠道流動中濃度 變化速率符合零階反應。於氮化物轉化路徑中,發現吸附於生物膜上及底泥之懸浮固體物, 於生物膜厚度上產生溶氧梯度及其水解提供碳源,可能是進行脫硝之主因;生物擔體渠道可 同時進行硝化及脫硝反應。 |
英文摘要 | The pathways and kinetic behaviors of nitrogen compounds have been examined in biofilm channeling for the purification of wastewater treated by the activated sludge process (ASP) under laminar and turbulent flow conditions. The continuous water flow experiments show that the flow velocity will significantly influence the nitrification and denitrification conversion rates. The optimal total Kjeldahl nitrogen (TKN-N) and total nitrogen (TN-N) removal rates can be achieved during the initial turbulent flow condition. Concentrations of TKN-N and TN-N variations in the biofilm channel follow zero order kinetics. In our 54-m biofilm channel, pathways of nitrogen compound conversions demonstrate that trapped suspended solids in the biofilm form an anoxic environment and are hydrolyzed to produce a carbon source, which may be the main reason for the occurrence of denitrification. The nitrification and denitrification processes occur simultaneously in the biofilm channel. |
本系統中英文摘要資訊取自各篇刊載內容。