| 接种比例对酒糟与餐厨垃圾混合厌氧发酵产沼气的影响 |
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| 引用本文： | 蔡玮玮,张笑,王利红,汪群慧.接种比例对酒糟与餐厨垃圾混合厌氧发酵产沼气的影响[J].环境工程,2013,31(2):99-103,131. |
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| 作者姓名： | 蔡玮玮 张笑 王利红 汪群慧 |
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| 作者单位： | 1. 北京科技大学环境工程系,北京,100083
2. 邯郸职业技术学院建工系,河北邯郸,056001 |
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| 基金项目： | 国家自然科学基金，国家国际科技合作专项，环保公益行业专项 |
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| 摘 要： | 采用酒糟与餐厨垃圾作为混合发酵物料,并接种消化污泥进行厌氧干式发酵,比较接种比例(inoculum to substrate ratios,ISRs)(VS质量比)分别为0.5、0.8、1.0、2.0时的甲烷产率和产量、体系VFA、碱度、游离氨等指标。结果表明:接种比例的提高可有效提高甲烷产生速率,缩短发酵周期,减弱较高浓度VFA引起的抑制作用。当ISRs=1.0时产甲烷效果较好,累计产甲烷率为222.58mL/g,VS去除率达83.4%,继续增加接种比例对发酵效果影响不显著。此外,试验中适宜的VFA/碱度值为0.3～1.2,过大或过小都有可能抑制产甲烷过程。
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| 关 键 词： | 接种比例 酒糟 餐厨垃圾 甲烷 厌氧混合干式发酵 |
INFLUENCE OF THE INOCULUM TO SUBSTRATE RATIO ON THE ANAEROBIC CO-DIGESTION OF DISTILLER'S GRAINS AND FOOD WASTE |
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| Cai Weiwei,Zhang Xiao,Wang Lihong,Wang Qunhui.INFLUENCE OF THE INOCULUM TO SUBSTRATE RATIO ON THE ANAEROBIC CO-DIGESTION OF DISTILLER'S GRAINS AND FOOD WASTE[J].Environmental Engineering,2013,31(2):99-103,131. |
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| Authors: | Cai Weiwei Zhang Xiao Wang Lihong Wang Qunhui |
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| Institution: | 1(1.Department of Environmental Engineering,Beijing University of Science and Technology,Beijing 100083,China; 2.Department of Architectural Engineering,Handan Polytechnic College,Handan 056001,China) |
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| Abstract: | The method of anaerobic solid-state digestion was used to examine the effects of different ISRs(inoculum to substrate ratios) on methane production,VFA concentration,alkalinity and free ammonia from distiller's grains and food waste at inoculum to substrate volatile solids ratios of 0.5,0.8,1.0,and 2.0 with activated sludge as inocula.The results showed that the increasing ISRs could effectively boost the production of methane,shorten fermentation period and alleviate inhibition effects caused by high VFA concentration.The highest accumulated methane yield was 222.58mL/g at ISRs value of 1.0 with 83.4% removal rate of VS.Keeping increasing ISRs has no significant influence on fermentation results.In addition,appropriate VFA/alkalinity value has to be kept at 0.3~1.2 in this experiment,otherwise methanogenesis process may be inhibited. |
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| Keywords: | inoculum to substrate ratio distiller's grains food waste methane anaerobic solid-state co-digestion |
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