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攪拌對(duì)牛糞干式厭氧發(fā)酵效果的影響
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國際科技合作資助項(xiàng)目（2010DFB60680）


Effect of Mixing on Dry Anaerobic Digestion of Dairy Manure
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    利用自制干式厭氧發(fā)酵罐，通過批次試驗(yàn)，研究了高溫（55℃）條件下攪拌對(duì)牛糞干式厭氧發(fā)酵效果的影響。連續(xù)攪拌轉(zhuǎn)速為8~32r/min時(shí)，產(chǎn)氣效果無明顯差異。采用8r/min間歇攪拌，所得到的甲烷產(chǎn)量比連續(xù)攪拌低約10%，但能大幅降低攪拌能耗，在干式厭氧發(fā)酵系統(tǒng)中更為適用。反應(yīng)過程中，各組間發(fā)酵料液的pH值、揮發(fā)性有機(jī)酸濃度、總堿度和氨氮濃度無明顯差異。

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    Effect of mixing on dry thermophilic (55℃) anaerobic digestion of dairy manure was investigated. No significant difference in fermentation performance was observed between continuous mixing speeds of 8~32r/min. Compared to continuously mixing, although 10% less methane was produced with batch slightly mixing. It greatly decreased energy consumption for mixing, and more suitable for dry anaerobic digestion. No significant difference in pH value, concentrations of ammonia, volatile fatty acid and total alkalinity was observed among different mixing conditions during digestion. 

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李道義,李樹君,劉天舒,黃希國,吳麗麗,景全榮.攪拌對(duì)牛糞干式厭氧發(fā)酵效果的影響[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2013,44(2):117-120. Li Daoyi, Li Shujun, Liu Tianshu, Huang Xiguo, Wu Lili, Jing Quanrong. Effect of Mixing on Dry Anaerobic Digestion of Dairy Manure[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(2):117-120.

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  • 在線發(fā)布日期: 2013-02-04
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