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題 名 | 利用氣泡吸附法去除循環水集約養鰻池固形物之設備設計 |
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作 者 | 侯文祥; 李立偉; | 書刊名 | 中國水產 |
卷 期 | 550 1998.10[民87.10] |
頁 次 | 頁39-54 |
分類號 | 439.6 |
關鍵詞 | 氣泡吸附; 氣泡柱; 固形物; 循環水養殖系統; 去除效除; Bubble absorption; Bubble column; Particle; Circulative culture system; Removal efficiency; |
語 文 | 中文(Chinese) |
中文摘要 | 本文利用低造價氣泡柱去除養鰻池中固形物以減輕循環水系統中有機物之負荷。 利用固形物重量濃度與粒徑分佈特徵兩種資料,求出不同粒徑範圍的去除效率,並應用氣 泡柱操作參數因子推導出最佳操作因子,提高其對固形物之去除效率。實驗得知:在使用 直徑為150mm 之氣泡柱與孔徑50um的氣泡分散盤時,當設計入氣量7升/分、入流量4.2升/ 分時,可達到83%的最佳去除效率。使用孔徑為120um 的氣泡分散盤時,則可在入氣量15 升/分、入流量4.2升/分時達到69%的最佳去除效率。且兩者在達到最佳處理效率時,對於 粒徑小於100um 顆粒之去除效率可達到80%以上。至於改變氣泡柱內徑150mm為60mm且氣泡 分散盤孔徑均使用1mm 時兩者所得最佳去除效率僅約為 38%,與上述兩種實驗結果相比較 ,不論在總處理效率及小於 100um的粒徑別去除率都較低甚多。增加入氣流量比減少入水 流量對提高處理效率的影響程度較大,其靈敏度分析結果約為三倍差異。對210 噸的循環 水量,氣泡柱體積設計為循環水量的萬分之一,循環流速為4.2升/分,則系統循環流速可 降至約30日循環一回。以上結果對循環水養殖系統的設備設計及操作管理均能提供實質助 益。 |
英文摘要 | In this article, the low cost bubble column is used in a circulative eel culture system for organic particle removal. The solid concentration and size frequency distribution methods are combined to determine the solid removal efficiencies in different size range. The experiment shows that the pore size of the scattered disk is 50 um, the diameter of the bubble column is 150mm. With administration of water flow rates 7L/min and 4.2L/min, the removal efficiency will raise to 83%, when the scattered disk is changed to 120um, and the same other conditions are set, the removal efficiency will lower to 69%. When both air and water reach the best condition, the removal efficiency of particles with diameter below 100um will reach as high as 80%. However, if the diameter of the bubble column is changed from 150mm to 60mm, and the pore size is 1mm, the removal efficiency would be lower to 38%. The experiments suggest that not only the total removal efficiency is low, but removal efficiency of particles smaller than 100um is also considerably low. An increased air flow plays a more crucial role in removal efficiency than a decreased water flow. The degrees of sensitivity shown in the analysis differ approximately 3 folds. The culture water will circulate to one time per thirty days with circulative flow rate 4.2L/min in this designed. The results will acquire the benefit of the equipment designing and the management modeling in a circulative culture system . |
本系統中英文摘要資訊取自各篇刊載內容。