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題 名 | 滲出水高濃度總氮硝化與脫硝之研究 |
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作 者 | 陳鴻烈; 鄭慧玲; | 書刊名 | 農林學報 |
卷 期 | 44:3 1995.09[民84.09] |
頁 次 | 頁91-104 |
分類號 | 445.46 |
關鍵詞 | 硝化處理; 碳源; 脫硝處理; Nitrification; Carbon source; Denitrification; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究以管柱型反應槽與活性污泥槽探討利用延長曝氣法使大屯滲出 水處理場曝氣糟出流水中殘留之氨氮繼續其硝化作用的可行性,結果顯示兩種反 應槽均可將進流水中的氨氮降至3mg/L以下,其中又以管柱型反應槽其有較佳的 硝化能力。至於在脫硝研究中,則發現三種碳源以甲醇之效果最好,平均可去除 NO��- -N達55左右;其次是乙醇(~49);醋酸鈉的效果最差(~35),但仍高於未加碳源 之控制組(~27)。此外,若將甲醇濃度增加至化學量論時,可顯著提升氮的去除效 果至93左右。而在本研究中欲去除1mg的NO��- -N,需添加2.48mg的甲醇(或 COD)。在固定式生長與懸浮式生長之比較研究中,發現以活性碳為擔體的固定 式生長(活性碳固定床)之脫硝速率在試程期間均高於懸浮式生長者,最高可去除 NO��- -N達98,平均亦有78。在攪拌與加活性碳對脫硝反應之影響中,結果顯示 攪拌可促進反應槽的脫硝能力,而攪拌、加活性碳同時進行則效果更好,能縮短 實驗達穩定狀態所需之操作時間。至於水力停留時間方面,當水力停留時間控制 在8天以上時,攪拌且加活性碳的及應槽達穩定狀況時之NO��- -N平均去除率皆 能維持在90以上;而當水力停留時間縮短為5天時,達穩定狀況時之NO��- -N平均 去除率則降為51左右。 |
英文摘要 | With effluent leachate from aeration basin at the Tatun, the experiments show that, underour operating conditions, the performance of the columned reactor is better than the activatedsludge tank reactor in nitrification process. Nevertheless, the effluents from two kind reactorsall contained less than 3 mg/L of NH��+-N. In denitrification, the selection priority of the carbonsources (282g/m��-day) is CH�� OH (average removal percentage of NO��3--N ~ 55) > C�浹�ΜH(~49) > CH�� COONa (~35) > control (did not add carbon source, ~27). Also, the result shows that the NC��--N removal increases with increasing CH�記H concentration. Atmethanoi concentration of stoichiometry, up to 93 of the nitrate was removed by denitrification. It should also be noted that 2.48 mg of CH�記H (or COD) will be required per milligramNO��-N. As compared to the suspended growth process, attached growth process (activated carbon fixed-bed) seems to be much more effective and stable. A maximum of 98 of nitrateremoved in the case of activated carbon fixed-bed was observed, and an average of ~78 ofthe nitrate load was eliminated. In addition, a study was undertaken to determine the effect ofmixing and adding activated carbon on the denitrifying capabilities. The results indicate that themixing can promote nitrogen removal. However, combined mixing/adding activated carbon is thebetter way to enhance denitrification efficiencies, and the steady-state performance can beachieved in shorter time. According to the effects of hydraulic residence time (HRT), averageremoval percentage of NO��-N increased with HRT in reactor of combined mixing/adding activated carbon, from about 51 at 5 days of HRT to about 90 or higher above 8 days at thesteady-state conditions. |
本系統中英文摘要資訊取自各篇刊載內容。