| 智能化沼气池粗纤维含量、微生物多样性及产气率相关性分析 |
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| 引用本文： | 徐庆贤,官雪芳,钱蕾,林斌.智能化沼气池粗纤维含量、微生物多样性及产气率相关性分析[J].福建省农科院学报,2014(8):784-788. |
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| 作者姓名： | 徐庆贤 官雪芳 钱蕾 林斌 |
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| 作者单位： | 福建省农业科学院农业工程技术研究所,福建福州350003 |
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| 基金项目： | 福建省发改委农业“五新”推广项目,福建省自然科学基金项目（2013J01103） |
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| 摘 要： | 为完善智能沼气池智能化控制系统，并对相关智能化沼气池运行提供理论基础，对智能化沼气池粗纤维含量、pH值、微生物多样性和产气率以及各因素间相关性进行分析研究，结果表明：相同发酵时间、不同发酵层的沼液粗纤维含量、pH值、微生物的多样性不存在显著差异；相同发酵层、不同发酵时间的沼液粗纤维含量、pH值、微生物多样性存在极显著差异；各发酵时间段内，最高产气率是6～16h时间段1.12m3·m -3·d-1，其次依次为14～24 h、0～6 h、24～48 h、48～72 h时间段；不同发酵时间产气率与粗纤维含量呈显著负相关，与pH值、Dsh指数、Jsh指数呈显著正相关。
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| 关 键 词： | 沼气池 粗纤维含量 微生物多样性 产气率 相关性分析 |
Correlation Analysis for Crude Fiber Content,Microbial Diversity and Gas Production Rate of Intelligent Biogas Digester |
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| Authors: | XU Qing-xian GUAN Xue-fang QIAN Lei LIN Bin |
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| Institution: | (Institute of Agricultural Engineering Technology, Fujian Academy of Agricultural Sciences, Fuzhou, Fujian 350003, China) |
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| Abstract: | In order to improve the control system of intelligent biogas digester in support of its operation theory ,the crude fiber content ,pH ,microbial diversity and biogas production rate of biogas sludge were analyzed to understand their correlations .The result showed that the crude fiber content ,pH and microbial diversity from various layers of biogas sludge performed no significant differences at same fermentation time in the first .Secondly ,the crude fiber content ,pH and microbial diversity from same layer exhibited significant changes along with fermentation time . Thirdly ,in dynamic change of biogas production ,the highest rate was detected in fermentation during 6 hrs to 16 hrs with 1.12 m3 · m-3 · d-1 ,followed by gradually depressing in production rate until the 72 hrs of the duration . In addition ,the biogas production rate was significantly negative correlation with the content of crude fiber in biogas sludge but positive correlation with the pH ,diversity index and homogeneous degrees index . |
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| Keywords: | biogas digester crude fibre content microbial diversity biogas production rate correlation analysis |
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