菌剂对秸秆原料户用沼气池产气量的影响试验研究

The experimental study on the influence of microbial agent on gas yield of household biogas digester fed by stalk

通过实验室筛选、培养,制取了具有分解秸秆和低温产沼气双功能的复合菌剂,研究添加复合菌剂对户用沼气池产气量的影响。结果表明:对于池容为10m3的秸秆沼气池,在常温下加入该菌剂后,启动时间比对照池缩短了3～6d,平均日产气量比对照池提高了0.057m3左右;冬季只要采取简单的保温措施,保证沼气池内料液温度达到10℃以上,加入该菌剂后,沼气池能正常使用,平均日产气量比对照池提高0.44m3左右。

Through laboratory screening and training,the dual-function composite microbial agent was prepared for stalk decomposition and lower temperature decomposition,the influence of the composite microbial agent on biogas yield has been studied.The results show that：by comparison with the control digester,for the 10 m3 biogas digesters fed by stalk material,at room temperature,and with the help of the microbial agent,the start-up time was 3~8 days shorter than the control digester,the average daily gas production was increased by 0.057 m3;with simple heat insulation measures in winter,and maintained liquid inside the digester over 10 ℃,then added the microbial agent,the digester could normally work and the average daily gas yield will be increased by 0.44 m3 by comparison with the control digester.