| 农村有机生活垃圾等混合物料厌氧发酵产沼气性能 |
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| 引用本文： | 王艳芹,付龙云,杨光,袁长波,李明华,姚利.农村有机生活垃圾等混合物料厌氧发酵产沼气性能[J].农业环境与发展,2016(6):1173-1179. |
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| 作者姓名： | 王艳芹 付龙云 杨光 袁长波 李明华 姚利 |
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| 作者单位： | 1. 山东省农业科学院农业资源与环境研究所，济南 250100; 山东省农业面源污染防控重点实验室，济南 250100;2. 山东省农业科学院农业资源与环境研究所,济南,250100;3. 华北油田供水供电中心供水运行工区,河北 沧州,062552 |
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| 基金项目： | 国家科技支撑项目(2013BAJ10B11-04)；山东省科技发展计划项目(2014GSF117012)；山东省集约蔬菜区有机废弃物沼气利用技术研究与示范；“海外泰山学者”建设工程专项 |
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| 摘 要： | 为获得有机生活垃圾、玉米秸秆和牛粪混合物料厌氧发酵产沼气性能，为农村废弃物沼气工程高效运行提供依据，在初始总固体（TS）为12%和中温（35±1）℃条件下，考察了有机生活垃圾、玉米秸秆与牛粪三物料不同湿基质量比（1∶0∶2、1∶0.5∶1.5、1∶1∶1、1∶1.5∶0.5、1∶2∶0）对厌氧发酵过程的影响。结果表明：与双物料混合厌氧发酵相比，三物料混合厌氧消化能显著提高原料产气率，有机生活垃圾、玉米秸秆和牛粪配比为1∶1∶1的组合单位TS累积产气量高于其他处理；不同发酵物料配比能影响厌氧发酵完成时间，随着秸秆比例的增加，完成厌氧发酵的时间逐渐增长，有机生活垃圾和牛粪的组合与三者配比为1∶0.5∶1.5、1∶1∶1、1∶1.5∶0.5和1∶2∶0的处理相比，厌氧发酵完成时间分别缩短了12、15、19、22 d；三物料混合发酵适宜的配比能平衡发酵系统中酸的浓度，防止系统酸化，并能提高纤维素半纤维素降解率。综上认为三物料最佳配比为1∶1∶1。
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| 关 键 词： | 厌氧消化 沼气 农村有机生活垃圾 玉米秸秆 牛粪 |
Biogas production of rural organic wastes during anaerobic digestion |
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| Abstract: | Nowadays huge amount of organic wastes has been generated in rural area. Recycling these organic wastes is an interesting re-search topic. Here an experiment was conducted to produce biogas from rural domestic organic wastes by anaerobic digestion. Domestic or-ganic wastes were anaerobically co-digested with corn stover and cow manure at different ratios(1∶0∶2, 1∶0.5∶1.5, 1∶1∶1, 1∶1.5∶0.5, and 1∶2∶0, by wet weight ratio)under mesophilic condition(35±1)℃and total solid(TS)content of 12%. Biogas production was much higher from three feedstocks than from two feedstocks. The highest biogas yield(278.92 mL·g-1)was obtained with 1∶1∶1 mixture. The digestion time was also influenced by the ratios of feedstocks. Increasing proportions of corn stover and cow manure extended the fermentation time. The fer-mentation time of mixture(1∶0∶2)was respectively 12, 15, 19, and 22 day shorter than that of mixtures 1∶0.5∶1.5, 1∶1.5∶0.5, and 1∶2∶0. The degradation of cellulose and hemicellulose was improved in the mixture systems. In conclusion, the optimal mixing ratio was 1∶1∶1. Our re-sults would shed light on the operation of rural organic waste biogas project. |
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| Keywords: | anaerobic digestion biogas rural organic domestic waste corn stover cow manure |
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