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一项以秸秆为主要原料生产沼气的技术试点示范项目近日通过了农业部组织的专家鉴定。这项技术与常规稻草发酵和人畜粪便发酵相比,其产气率分别提高了30%以上和6.8%,正常产气时间分别提前了4～8d和1d以上。同时,延长了产气周期,普遍采用8～10个月换新料1次,有的沼气池甚至维持正常产气12个月,实现了秸秆产沼气高效、稳定和持续运行。
A demonstration pilot project of technology to produce biogas with straw as the main raw material recently passed the expert appraisal organized by the Ministry of Agriculture. Compared with conventional straw fermentation and human and animal feces fermentation, the gas production rate of the technology is increased by more than 30% and 6.8% respectively, and the normal gas production time is advanced by 4 to 8 days and 1 day respectively. At the same time, the gas production cycle is prolonged. Generally, 8 to 10 months of new material is used for one time. Some biogas plants even maintain normal gas production for 12 months, achieving high efficiency, stability and continuous operation of biogas production from straw.