摘要
研制了以覆膜槽生物反应器(MCT)为核心的沼气规模化干法发酵系统。该系统采用"软管充气膨胀压力密封联接装置",实现了反应器厌氧―好氧状态的快捷转换,解决了大规模快速进出料的问题,并可直观判断反应器中沼气的存留量,操作简便、安全;利用固态有机物料好氧发酵产生的生物能获得中温厌氧发酵所需温度,并辅以高效的保温措施,无需外加热源,即可维持厌氧发酵的中温(35～42℃)运行;采用单元化设计,通过增减启动厌氧反应器的数量,可满足不同用气量的要求。建设了生物反应器容积为180 m3的沼气干法发酵中试工程。该中试工程容积产气率为0.598 m3/(m3.d),沼气甲烷含量55%～60%。
A new type of large scale biogas dry fermentation system was developed, named as membrane covered trough biogas dry fermentation system, including membrane covered trough bioreactor and accessorial equipment. It achieved the goal of convenient transformation between anaerobic and aerobic conditions by soft tube inflating pressure seal linkup, solving the problem of large scale raw material input and output. It was easy to estimate biogas quantity in the bioreactor because of its flexible structure, being helpful anaerobic process（35 -42℃） by gaining heat energy from for safe biogas production. It could run with mesophilic aerobic pre-treatment and heat energy preservation during anaerobic digestion, in no need of additional heat resource. It could satisfy the need of different scale biogas yields by adding or reducing the number of membrane covered trough bioreactor. Membrane covered trough biogas dry fermentation pilot project was constructed, the cubage of which was 180 m^3. Its cubage biogas yield rate was 0.598 m^3/（m^3·d）, methane content ranged between 55% - 60%.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2008年第10期100-104,共5页
Transactions of the Chinese Society of Agricultural Engineering
基金
"十一五"国家科技支撑计划重大项目"农林生物质工程""沼气规模化干法厌氧发酵技术与装备研究"课题(2006BAD07A02)
关键词
沼气
规模化
干法发酵
覆膜槽生物反应器
biogas, large scale, dry fermentation, membrane covered trough bioreactor
