猪粪固体含量对厌氧消化产气性能影响及动力学分析

为优化猪粪厌氧消化总固体质量分数（total solid,TS）,以猪粪为原料,采用批式试验方法,研究不同TS对厌氧消化产气性能的影响。结果表明：底物固体质量分数分别为3.0%、7.5%、12.0%和15.0%时,猪粪的挥发性物质（volatile solid,VS）沼气产率随底物固体质量分数的增加而降低,分别为579、527、356和237 m L/g,底物固体质量分数为3.0%和7.5%时的CH4产率优于其他固体质量分数,分别为317和326 m L/g,占理论CH4产率的66.9%和68.8%;不同固体质量分数厌氧消化过程中,最高产CH4速率分别为37.0、24.4、10.4和4.7 m...

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Bibliographic Details
Published in农业工程学报 Vol. 30; no. 24; pp. 246 - 251
Main Author 杜连柱 梁军锋 杨鹏 高文萱 张克强
Format Journal Article
LanguageChinese
Published 农业部环境保护科研监测所,天津,300191 2014
Subjects
动力学模型
厌氧消化
固体质量分数
废弃物
猪粪
甲烷
固体质量分数
wastes
厌氧消化
methane
废弃物
动力学模型
kinetics model
甲烷
anaerobic digestion
total solid
猪粪
swine manure
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ISSN1002-6819
DOI10.3969/j.issn.1002-6819.2014.24.030

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Summary:为优化猪粪厌氧消化总固体质量分数（total solid,TS）,以猪粪为原料,采用批式试验方法,研究不同TS对厌氧消化产气性能的影响。结果表明：底物固体质量分数分别为3.0%、7.5%、12.0%和15.0%时,猪粪的挥发性物质（volatile solid,VS）沼气产率随底物固体质量分数的增加而降低,分别为579、527、356和237 m L/g,底物固体质量分数为3.0%和7.5%时的CH4产率优于其他固体质量分数,分别为317和326 m L/g,占理论CH4产率的66.9%和68.8%;不同固体质量分数厌氧消化过程中,最高产CH4速率分别为37.0、24.4、10.4和4.7 m L/（g·d）;固体质量分数为7.5%时消化体系的TS、VS降解率最高,分别达到49.2%和65.5%;固体质量分数为3.0%和7.5%的厌氧消化过程符合一级动力学方程,但猪粪的产甲烷速率常数从0.126 d-1下降到0.063 d-1;与3.0%的固体质量分数相比,消化时间为30 d时,底物的生物转化产CH4效率随固体质量分数的增加分别降低6.3%、55.8%和74.7%,固体质量分数为3.0%和7.5%时生物转化产CH4效率达到58.0%所需的时间分别为18和30 d。
Bibliography:11-2047/S
anaerobic digestion; wastes; methane; swine manure; total solid; kinetics model
Du Lianzhu, Liang Junfeng, Yang Peng, Gao Wenxuan, Zhang Keqiang （Agro-environmental Proteetion Institute, Ministry of Agriculture, Tianjin 300191, China）
Anaerobic digestion was a suitable technology for agricultural waste management as it combined waste treatment, energy output and recycling of by-product which can be used in agriculture as nutrient. The total solid（TS） or organic loading rate, hydraulic retention times and others parameters will influence the performance of anaerobic digestion. Among of these factors, TS was an important factor which influenced the biogas production efficiency, characteristics of the digested and the economic benefits of biogas plants because the appropriate TS can improve the utilization efficiency of working volume and increase the volume biogas production of the reactors. In order to optimize the total solid of anaerobic digestion with swine manure, batch experiment was carried out to
ISSN:1002-6819
DOI:10.3969/j.issn.1002-6819.2014.24.030