Effect of reflux ratio of biogas slurry on anaerobic fermentation of cow manure

doi:10.19912/j.0254-0096.tynxb.2019-0255

	Effect of reflux ratio of biogas slurry on anaerobic fermentation of cow manure
	Li, Jinping 1,2,3,4; Cao, Peng 1,2,3,4; Guo, Jingtao 1,2,3,4; Wang, Chunlong 1,2,3,4; Huang, Juanjuan 1,2,3,4
刊名	Taiyangneng Xuebao/Acta Energiae Solaris Sinica
	2021-06-28
卷号	42 期号:6 页码:469-475
关键词	Ammonia Biogas Energy utilization Fermentation Fertilizers Gases Manures Methane Testing Ammonia nitrogen Anaerobic fermentation Anaerobic fermentation process Continuous feeding Feed temperature Kinetic analysis Methane recovery Theoretical calculations
ISSN号	02540096
DOI	10.19912/j.0254-0096.tynxb.2019-0255
英文摘要	In order to reduce the biogas slurry and heat loss from the wet anaerobic fermentation process of continuous feeding, the effect of long-term reflux biogas slurry on the anaerobic fermentation of cow manure was studied in a 50 L continuous feed wet anaerobic fermentation plant. At the mesophile temperature (37±1), the daily gas production, methane volume fraction, pH value, SCOD content and ammonia nitrogen content of biogas liquid reflux ratios (0%, 30%, 40%, 50%, 60%) were studied. And the mechanism of promoting the methane recovery is researched by kinetic analysis. The results show that the gas production in the test group with a reflux ratio of 40% gradually increases during the reflux phase and stabilizes after 108 days. The highest daily gas production during the test period is 62.45 L, and the volumetric gas production rate is 1.39 L/L. Compared with the test group with a reflux ratio of 0% and 30%, it is increased by 25.46% and 9.22% respectively. The test group with a reflux ratio of 50% and 60% achieves a maximum daily gas production of 62.29 L and 62.40 L in the reflux phase, but the daily gas production begin to decrease at the 95th and 78th day respectively, and at the end of the 120 d test, it is already below the test group with a reflux ratio of 40%. Finally, the theoretical calculation of the increase of the fermentation feed temperature by the reflux biogas slurry shows that the reflux biogas slurry can reduce the energy consumption of the fermentation raw material by 27.23% to 33.38%. © 2021, Solar Energy Periodical Office Co., Ltd. All right reserved.
语种	中文
出版者	Science Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150966]
专题	能源与动力工程学院
作者单位	1.Key Laboratory of Energy Supply System Drived by Biomass Energy and Solar Energy of Gansu Province, Lanzhou; 730050, China; 2.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China 3.Western China Energy & Environment Research Center, Lanzhou University of Technology, Lanzhou; 730050, China; 4.China Northwestern Collaborative Innovation Center of Low-carbon Urbanization Technologies, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Li, Jinping,Cao, Peng,Guo, Jingtao,et al. Effect of reflux ratio of biogas slurry on anaerobic fermentation of cow manure[J]. Taiyangneng Xuebao/Acta Energiae Solaris Sinica,2021,42(6):469-475.
APA	Li, Jinping,Cao, Peng,Guo, Jingtao,Wang, Chunlong,&Huang, Juanjuan.(2021).Effect of reflux ratio of biogas slurry on anaerobic fermentation of cow manure.Taiyangneng Xuebao/Acta Energiae Solaris Sinica,42(6),469-475.
MLA	Li, Jinping,et al."Effect of reflux ratio of biogas slurry on anaerobic fermentation of cow manure".Taiyangneng Xuebao/Acta Energiae Solaris Sinica 42.6(2021):469-475.