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題 名 | 臥置式與直立式厭氧處理槽及溫度對養牛廢水沼氣產量之影響=Effect of Temperature and Digester Types on Methane Production from Dairy Cattle Wastewater |
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作 者 | 鄭閔謙; 郭猛德; 蕭庭訓; 劉主欣; 蕭宗法; 程梅萍; | 書刊名 | 畜產研究 |
卷 期 | 47:1 2014.03[民103.03] |
頁 次 | 頁43-50 |
分類號 | 437.34 |
關鍵詞 | 養牛廢水; 沼氣; 厭氧發酵; Dairy cattle wastewater; Biogas; Anaerobic fermentation; |
語 文 | 中文(Chinese) |
中文摘要 | 養牛廢水經厭氧處理產生的沼氣為具有發展潛力之替代能源之一,但因養牛廢水纖維含量較多且常因氣候因素影響廢水處理效率與沼氣產量,因此本研究目的為利用直立式處理槽搭配加溫系統提供恆溫發酵環境,藉此比較其於不同厭氧溫度下與同容積臥置式厭氧處理槽於冬天與夏天下沼氣產量之影響。使用乳牛場經固液分離後之廢水,分別於直立式處理槽 30℃ (U30)、40℃ (U40)與臥置式厭氧處理槽於冬天 (HW)與夏天 (HS)之室溫下經 15天發酵。試驗結果顯示, U30、40、HS與 HW於發酵 15天後之沼氣產量分別為 0.42、0.51、0.23與 0.04 L/g VSadded,各處理組之甲烷比例佔沼氣總成分並無顯著之差異,其比例為 55 – 73%之間。各組之有機酸降解率於廢水停留 3天時皆達 50%,至停留 9天時都有 90%以上之降解。综上所述,各處理組間以 U40有最高之甲烷產量 (P < 0.05)且分別為 HS與 HW的 1.8倍與 10.5倍。 |
英文摘要 | The biogas from the anaerobic fermentation of dairy cattle wastewater (DCW) was one of the most potential bioenergy resources. However, the performance of treatment of DCW which contained more fiber was deeply affected by the climate. The purpose of this study was to develop a vertical anaerobic digester (VAD), which provide the constant temperature with hot water heated by solar or biogas powered heater. The performances of the VAD and a horizontal anaerobic digester (HAD) with the same volume were compared under different conditions. The solid-separated wastewater from a daily farm was conducted to the VAD under 30℃ (U30) and 40℃ (U40), and to the HAD under room temperature in winter (HW) and summer (HS). The qualities of wastewater and the composition of biogas were analyzed every 3 day during 15 day’s fermentation. The results showed that total amount of biogas produced were 0.42, 0.51, 0.23 and 0.04 L/g VSadded for U30, U40, HW, HS, respectively, and the concentration of methane in the biogas not significantly different for all treatment that ranged at 55-73%. The digestion rates of organic acids were over 50% and 90% on 3 and 9 days of retention time, respectively for all condition. In conclusion, the largest amount of methane was produced in the U40, which was 1.8 and 10.5 times of the amount the HS and HW, respectively. |
本系統中英文摘要資訊取自各篇刊載內容。