| 研究生: |
陳俊勳 Chen, Chun-Hsun |
|---|---|
| 論文名稱: |
好氧性氧化塘處理受污染排水之模式 A Model of Aerobic Oxidation Pond |
| 指導教授: |
溫清光
Wen, Ching-Gung |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 環境工程學系 Department of Environmental Engineering |
| 論文出版年: | 2004 |
| 畢業學年度: | 92 |
| 語文別: | 中文 |
| 論文頁數: | 118 |
| 中文關鍵詞: | 介質 、接觸曝氣氧化塘 、水力停留時間 、負荷 、模式 |
| 外文關鍵詞: | contact aeration lagoon, model, load, media, HRT |
| 相關次數: | 點閱:66 下載:1 |
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本研究以經濟操作簡單的接觸曝氣氧化塘處理法淨化受污染的排水,溪水經過初步沉澱池後,再以接觸曝氣氧化塘處理。初沉池表面積130.5m2,體積312 m3 ,氧化塘有效水深2m,體積1600 m3,塘內裝生物繩為介質,填充率為2.8%。實驗分為12.2、15.8、31.9、62.4及小時四種水力停留時間(QH)的試程,對應之介質表面負荷(LS)分別為3.6 g BOD5/m2/d 、6.7 g BOD5/m2/d、2.3 g BOD5/m2/d與1.1 g BOD5/m2/d。實驗結果以16小時為最佳水力停留時間,可兼具去除效果與經濟性,此時氧化塘SS、COD及BOD5之去除率分別約為50%、50%及65%。而介質有機負荷與進流水濃度是影響有機去除量的主要參數,可得到經驗式:
BOD模式=>Lr=0.198Ls0.636Si1.072 n=24, R2=0.87
COD模式=>Lr=0.184Ls0.733Si0.847 n=24, R2=0.96
式中Lr= g/m3/d、Ls= g/m2/d、Si=mg/L、n=樣本數、R2為回歸公式判定係數。本模式可做為接觸曝氣氧化塘之體積、介質表面積等設計之用,但比表面積負荷限定在12 g/m2/d以內。
Due to the factors of user-friendly and low cost operation, this study employed a contact aeration lagoon to purify the water quality of the Wulow Creek. First, the Creek water was pumped into a settling basin, and then treated by a aerated lagoon of which volume is 1600m3 and a lot of bio-rope used as media is packed. Four runs of experiment according to 12.2hours, 15.8 hours, 31.6 hours and 62.4 hours of hydraulic detention time (HRT) and their respective 3.6 g /m2/d, 6.7 g5/m2/d, 2.3 g /m2/d and1.1 g /m2/d of media BOD5 loads had been finished.
Optimal HRT should be 16hrs with efficiency and economy and the removal efficiency of SS, COD and BOD are 50% , 50% and 65%,respectively. Surface area load and influent water-quality are the major factors for the variation of the organic removal rate. The BOD and COD experienced models have been formulated as follows:
BOD Model =>Lr=0.198Ls0.636Si1.072 n=24,R2=0.87
COD Model =>Lr=0.184Ls0.733Si0.847 n=24,R2=0.96
Where Lr is removed mass per unit volume of lagoon, g/m3/d;Ls is organic load per unit surface area of media , g/m2/d;Si is concentration of influent, mg/L; n is sample size; and R2 is determinate coefficient of regression equations.
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