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題名 | 發酵工業廢液之電凝聚分離特性與污泥之聚電解質調理的研究=Study on the Industrial Fermentation Wastewater by Electroflocculation Method and Its Sludge Conditioning with Polyelectrolytes |
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作者姓名(中文) | 陳文章; 鄭陽助; 許琇瑩; 陳宗男; | 書刊名 | 臺北科技大學學報 |
卷期 | 34:2 2001.09[民90.09] |
頁次 | 頁23-35 |
分類號 | 468.24 |
關鍵詞 | 發酵廢液; 電凝聚分離; 污泥調理; 聚電解質; Fermentation wastewater; Electroflocculation; Sludge conditioning; Polyelectrolyte; |
語文 | 中文(Chinese) |
中文摘要 | 本文提出利用電凝聚技術來進行發酵工業廢液的固液分離,電凝聚技術包含了電凝聚浮除與電凝聚沉澱兩者合而為一的反應程序。實驗裝置是利用廉價的鐵和不鏽鋼等金屬做成的電極板與隔板構成之連續流動式電化學反應槽,並加入陰性聚電解質凝聚劑來增加電凝聚分離的效果。其中針對電凝聚所產生之上層泡沫與下層沉澱兩種污泥,分別進行批次式之高分子調理,實驗結果顯示攪拌轉速與高分子凝聚劑的劑量,為污泥之過濾與脫水效率優劣的主要因素。而攪拌轉速範圍在200-300rpm之間,高分子凝聚劑濃度範圍在30-50mg/L之間,發酵工業廢液之電凝聚分離及其沉澱污泥之調理效果較佳。因此,電荷中和反應與高分子架橋反應兩種協合機制可能同時發生於本實驗系統中。 |
英文摘要 | This paper describes the application of an electroflocculation and sludge conditioning method for the treatment of industrial fermentation wastewater. Electroflocculation is a combination of the processes of electroflotation and electroprecipitation. Our electroflocculation unit consists of a continuous electrolytic cell with the cheapest electrodes such as iron and stainless steel. Anionic polycelectrolytes used as a flocculant were dosed continuously to enhance the removal rate of the impurities in wastewater. The sludges produced either from the electroflotated upper phase or from the electroprecipitated bottom phase were further conditioned with polymers by a jar-test apparatus. The influence of shear rate and polymer dose on the floc strength, filterability and dewatering performance, and average particle size of sludges was investigated. Test results show that the optimum polymer doses fall between 30-50mg/L under corresponding shear rates of 200-300rpm. It is suggested that both charge neutralization and polymer bridging mechanisms operate in the electroflocculation and sludge conditioning process. |
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