【摘要】 采用批量发酵工艺进行厌氧发酵,在35℃条件下比较蓝藻单独发酵,蓝藻与秸秆混合发酵2个处理的若干参数差异性及相关性。结果表明,2个处理的产气量与pH值之间有显著差异,在发酵一段时间内,产气量与化学需氧量(COD)有显著差异,且产气量与挥发性脂肪酸(VFA)含量呈显著正相关。从产气量、pH值、VFA含量、碱度、COD消减率等指标的变化来看,以蓝藻与水稻秸秆混合作为原料进行厌氧发酵,效果明显优于单独使用蓝藻进行厌氧发酵。更多还原

【Abstract】 Several indexes in the fermentation process of blue algae fermented in two ways(separate fermentation,blue algae with rice straw mixed fermentation) at 35 ℃ were compared for their differences and correlations.There was significant difference between treatments in gas production and pH values.In a certain period of fermentation,the COD was significantly different from gas production,and gas production showed a positive relation with VFA.From the variations of biogas volume,pH,VFA,alkalinity and COD,the effect of blue-algae and rice straw as raw material in fermentation was better than that of blue-algae as raw material alone.更多还原