https://scholars.lib.ntu.edu.tw/handle/123456789/86159
標題: | 行政院國家科學委員會專題研究計畫成果報告:畜舍揮發性有機臭氣之生物過濾研究(3/3) | 作者: | 廖中明 | 關鍵字: | 氨氣;生物過濾;微生物衰減;移除效率;Ammonia;Biofiltration;Microbial degradation;Removal efficiency | 公開日期: | 2003 | 出版社: | 臺北市:國立臺灣大學生物環境系統工程學系暨研究所 | 摘要: | 第三年研究工作為進行一實驗室中微生物對畜舍 產生氨氣之生物衰減實驗。氨氣為豬舍中主要氣態有害 物之一,形成豬舍內甚大之污染問題並造成地下水硝化 作用,對動物及人體亦具有相當之健康危害。本研究目 的為,在無控溫下以低廉、結合多樣性微生物之無機及 有機生物濾床形成之過濾器來減低豬舍惡臭。本研究使 用泥煤及無機媒床為生物過濾材,將氣體灌入使通過此 生物過濾管柱。結果顯示當室溫介於27.5±4.5oC,氣流速 率介於0.03–0.06 m3 h-1 時,氨氣濃度200 ppm 之生物移 除效率明顯介於99–100%間。此實驗過程下,氨氣於生 物過濾小於1 ppmv (0.707 mg m-3)時溢散,生物過濾性能 於此廣大範圍溫度間,長期之生物過濾系統可以有效之 低成本操作而達到去除效率。本研究中所獲得之最大氨 氣移除效率之去除容量為2.217 g m-3。本生物過濾器具有 高硝化效率並可於減壓情況下控制氨氣污染程度,由實 驗起始操作至終結反應來看,本生物過濾氣之生物膜具 有一優秀之穩定性。 We contacted a laboratory test for microbial degradation of livestock-generated ammonia in this year. Ammonia, one of the gases produced in greatest volume from swine waste, causes one of the biggest pollution problems in swine farming resulting in ground water nitrification and adverse effects on animal and human health. Our objective is to neutralize malodor by using biofilters packed with inexpensive inorganic and organic packing material combined with multicultural microbial load at uncontrolled temperatures. Peat and inorganic supporting materials were used as biofiltration matrix packed in a perfusion column through which gas was transfused. Results show the ammonia removal significantly fell in between 99-100 % when ammonia concentration of 200 ppmv was used at different gas flow rates ranged from 0.030 – 0.060 m3 h-1 at a fluctuating room temperature of 27.5±4.5°C. Under these conditions, the emission concentration of ammonia that is liberated after biofiltration is less than 1 ppmv (0.707 mg m-3) over the period of our study, suggesting the usage of low-cost biofiltration systems for long-term function is effective at wider ranges of temperature fluctuations. The maximum (100%) ammonia removal efficiency was obtained in this biofilter was having an elimination capacity of 2.217 g m-3 h-1. This biofilter had high nitrification efficiencies and hence controlled ammonia levels with the reduced backpressure. The response of this biofilter to shut down and start up operation showed that the biofilm has a superior stability. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/10743 | 其他識別: | 912313B002295 | Rights: | 國立臺灣大學生物環境系統工程學系暨研究所 |
顯示於: | 生物環境系統工程學系 |
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