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頁籤選單縮合
題名 | Separation and Recovery of Oily Wastewater from the Edible Oil Refinery with Ceramic Membranes=應用陶瓷膜分離回收油脂精製工廠之含油廢水 |
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作者 | 古源光; 林昱文; 邱秋霞; | 書刊名 | 國立屏東科技大學學報 |
卷期 | 6:3 1997.09[民86.09] |
頁次 | 頁195-206 |
分類號 | 445.462 |
關鍵詞 | 陶瓷膜; 油製精製工廠; 含油脂廢水; 用水管理技術; Ceramic membranes; Edible oil refinery; Oily wastewater; Water management technology; |
語文 | 英文(English) |
中文摘要 | 本研究選擇一個採用化學精製法之油脂工廠調查其用水效率、廢水處理,及可 能改善用水之處理,並將調查結果製成一個用水平衡圖。根據調查指出,在油脂精製過程 中,脫色及脫臭系統之真空冷凝用水佔全部製程用水絕大部份,應列為製程用水之必要管 制點;經此排出之廢水,其中並含有微量油脂及游離脂肪酸,造成回收循環使用之困難。 研究中選擇孔徑0.01及0.2μm之陶瓷膜探討並比較其分離微量油脂之操作特性,結果顯示 ,增加廢水中油脂之濃度對於通透液之流量影響不大,且均能將通透液中油脂之含量維持 在2.5ppm以下。利用亞倫尼亞斯圖觀察此二種不同孔徑之陶瓷膜,顯示此二種膜之通透液 流量均隨溫度升高而增加,且二者之趨勢並未有明顯不同。研究結果建議,於油脂精製過 程中加入孔徑0.2μm之陶瓷膜,在34~36℃及300~4OOkpa之操作條件下,即可達到處理回 收含油脂廢水之目的。 |
英文摘要 | An edible oil plant with chemical refming process was investigated its water consumption efficiency and wastewater treatment. A water balance diagram for the refining process was established, accordingly. This diagram indicates that cooling water for the barometric condensers at the vacuum systems of bleaching and deodorization should be controlled as the critical check points for water consumption. Wastewater from these outlets contains trace amounts of oils and free fatty acids which makes them difficult to be treated to recycle. Two ceramic membranes with nominal pore size of 0.2 and 0.01 gm, respectively, were chosen to test their performances against the oily wastewater. Comparisons of separation efficacy were conducted under 35 ℃ and 350 kPa transmembrane pressure. Data show that perfneate flux changes only slightly as increasing the oil concentration in the wastewater. Oil concentration in the permeate is able to be controlled below 2.5 ppm for both membranes. Thermal activation energy, AH, calculated from the Arrhenius plots shows no significant difference on temperature-dependence of the permeability coefficients between these two membranes. Both membranes could be used feasibly to separate the oily wastewater. However, this study suggests that ceramic membranes with pore size of 0.2 μm, or below, and working under 34-36 ℃ (temperature of the waste streams) and 300-400 kPa is sufficient to recover oily wastewater from the edible oil refme . |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。