接种比例对猪粪与蓝藻混合发酵产甲烷的影响  

Effect of inoculum to substrate ratios on methane production in mixed anaerobic digestion of pig manure and blue-green algae

作　　者：王寿权[1,2] 严群[1,2] 缪恒锋[1,2] 阮文权[1,2] 

机构地区：[1]江南大学工业生物技术教育部重点实验室,无锡214122 [2]江南大学环境与土木工程学院,无锡214122

出　　处：《农业工程学报》2009年第5期172-176,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：江苏省太湖治理科技专项(BS2007099);江苏省科技支撑计划-社会发展(BE2008607);江苏省高技术研究项目(DG2006044);江苏省自然科学基金(BK2006023)

摘　　要：在35℃条件下,利用猪粪为接种物,对接种比例(inoculum to substrate ratios,ISRs)(质量比)分别为3.0,2.0,1.0,0.5和0.25时的猪粪与蓝藻混合发酵进行研究,通过对厌氧分批发酵过程中的甲烷产量及特定影响参数的研究,寻找发酵过程中参数变化的规律,结果表明,ISRs在2.0时,蓝藻发酵产甲烷的效果达到最佳。在不同ISRs情况下,整个产气过程符合Cheynoweth方程,决定系数R2都在0.97以上;对蓝藻的生物降解率(Biodegradabilities,BD)的研究结果表明,上述ISRs条件下,蓝藻的BD(%)值分别为46.5,68.5,44.8,29.2和14.2;最后对发酵液中的pH值、挥发性固体、挥发性有机酸进行了研究,初步总结了各参数的变化规律,为蓝藻的资源化利用提供依据。A laboratory-scale study was conducted on the batch anaerobic digestion of pig manure and blue-green algae using multi-reactor system to compare the methane production from those substrates at different inoculum to substrate ratios （ISRs） of 3.0, 2.0, 1.0, 0.5 and 0.25 at 35℃. The results showed that the ultimate methane yield was the highest when ISRs was 2.0.The biodegradabilities （BD）（%） of the blue-green algae were 46.5, 68.5, 44.8, 29.2 and 14.2 when the ISRs varied from 3.0 to 0.25. The results obtained in the biochemical methane potential（BMP） tests showed that all the processes of methane production accorded with Cheynoweth equation with the R^2 〉 0.97. In addition, the parameters of pH value, volatile solids and volatile fatty acids in the fermentation broth were further studied to explain the mechanism of anaerobic digestion as a preliminary research. This study can provide bases for resource utilization of blue-green algae.

关 键 词：猪粪 甲烷 生物降解率 蓝藻 混合厌氧发酵 

分 类 号：S216.4[农业科学—农业机械化工程]