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題名 | 不同擔體之固定過濾床與流體化床脫硝比較及其分子量篩分研究=The Reactors and Gel Permeation Chromatography Study of Removing Nitrate with Fixed-Bed and Fluidized-Bed |
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作者 | 陳鴻烈; 鄭慧玲; 陳冠伃; Chen, Paris Honglay; Jenq, Christina H.; Chen, Audrey K.; |
期刊 | 農林學報 |
出版日期 | 19960600 |
卷期 | 45:2 1996.06[民85.06] |
頁次 | 頁47-58 |
分類號 | 445.463 |
語文 | chi |
關鍵詞 | 固定過濾床; 流體化床; 脫硝處理; 膠體滲透層析; Fixed-bed; Fluidized-bed; Denitrification; GPC; |
中文摘要 | 在控制組與不同介質的厭氣固定過濾床之脫硝效能比較中顯示,以活性碳或離子 交換樹脂為介質的固定過濾床均較未加介質者(控制組)能提供微生物一個較好的生長環境 。至於在厭氣流體化床處理系統中則顯示,以離子交換樹脂為擔體之脫氮效果勝於以活性碳 為擔體者。若將固定過濾床與流體化床進行比較,則發現在試程期間,流體化床對 NO �婀� -N 的平均去除效率( 58 %或 71 %)較固定過濾床的 51 %或 53 %為佳。 此外,在溶 解性有機物分子量篩分研究中顯示,滲出水(大屯場曝氣池出流水)經脫硝程序處理前、後 ,有機物分子量的分佈並無明顯之變化,顯示滲出水中有機分子的裂解在此處理下相當有限 ,相對而言,有機分子裂解下的可利用碳源亦十分稀少,因此,在本研究脫硝處理系統中碳 源的添加是有其必要性。 |
英文摘要 | This study is to investigate the comparison of leachate denitrification efficiency between fixed-bed and fluidized-bed reactor. The results show that the fixed-bed reactor with carriers of granular activated carbon or ion exchange resin can offer a better environment for biological growth in respect to the control reactor without a carrier. For the anaerobic fluidized-bed reactors, the performance of denitrification indicates that the reactor with carriers of ion exchange resin is more effective than that of activated carbon. Additionally, the fluidized-bed systems have shown superior NO �婀� -N removals (=58% or 71%) compared with fixed-bed reactors (=51% or 53%). Finally, the analysis of gel permeation chromatography (GPC) exhibits that no apparent distinctions of the distribution of molecular weight for dissolved organic matters are observed before/after denitrification treatments of leachate. In the other words, the degradation of organic molecules in denitrification is insignificant, i.e., the useful carbon sources from organic degradatiion are limited. Consequently, the addition of carbon source is essential in our systems of denitrification. |
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