光照强度对猪粪、牛粪厌氧发酵的影响研究  

Study on Effect of Illumination Intensity on Pig Manure, Cow Dung′ Anaerobic Fermentation

作　　者：尹冬雪[1,2] 刘娟娟[3,2] 季艳敏[1,2] 刘伟[1] 杨改河[3,2] 任广鑫[3,2] 冯永忠[3,2] 周小武[4] 

机构地区：[1]西北农林科技大学林学院,陕西杨凌712100 [2]陕西省循环农业工程技术研究中心,陕西杨凌712100 [3]西北农林科技大学农学院,陕西杨凌712100 [4]西北农林科技大学后勤服务中心,陕西杨凌712100

出　　处：《农业环境科学学报》2012年第2期428-434,共7页Journal of Agro-Environment Science

基　　金：陕西13115重大专项(2010ZDKG-06);农业部农村能源综合建设项目专项(2011-65);十二五国家科技支撑计划项目"混合原料高产生物燃气技术集成示范"(2011BAD15B03)

摘　　要：研究光照强度对猪粪、牛粪厌氧发酵的影响,为沼气池的改进、提高产气量提供参考。试验以猪粪、牛粪为发酵原料,设置0、6、12、24h4组光照梯度处理,在恒温35℃和料液总固体质量分数为8%的条件下进行厌氧发酵。结果显示,不同光照强度下同一发酵原料的产气量差别较大,猪粪、牛粪在12h光照条件下的累积产气量分别是0h光照条件下的(黑暗)1.80、2.34倍;相同的光照强度不同发酵原料产气量存在差别,0h光照条件下(黑暗)猪粪的累积产气量为8136mL,牛粪的累积产气量为3282.5mL;光照条件改变发酵料液的理化性质,使累积产气量与发酵料液的碱度、挥发性脂肪酸(Volatile fatty acids,VFA)、pH值、氨态氮的相关性呈动态变化。The purpose of research on effect of illumination intensity on pig manure and cow dung＇ anaerobic fermentation is to provide theo- retical basis for improving biogas yield and promoting innovation of biogas digester. The experiment, under 35℃, at 8% of total solid concen- tration of digestion material, with pig manure and cow dung as digestion material, was completed at different illumination intensity which rang was from 0 to 24 hours and with a gradient of 6 hours. Results indicated that there was a great deal difference in terms of the same fermentation materials＇ gas production under the different illumination intensity. Pig manure and cow dung＇ cumulative biogas yield, under 12 hours of light condition, were 1.80 and 2.34 times respectively as much as that of under dark condition. In addition, gas production of different fer-mentation material, at the same illumination intensity, was different. In the dark conditions, the cumulative gas production of pig manure was 8 136 mL, which was far much than that of cow dung, at 3 282.5 mL. Illumination conditions changed the physical and chemical characteris- tics of fermentation material, which led to the dynamic of relationship among cumulative biogas yield and total alkalinity, volatile fatty acids, pH, NH3-N.

关 键 词：猪粪 牛粪 厌氧发酵 光照强度 

分 类 号：S216.4[农业科学—农业机械化工程]