摘要
自然条件下北方寒区户用沼气池一年中只有5—6个月能正常产气；大棚保温沼气池不能越冬，但可延长沼气池的产气时间；生物质热能沼气池增温层60-70天换料，一年换料2～3次，就可使沼气池越冬产气；经济效益分析结果表明，生物质热能沼气池与常规沼气池比较，在不增加生产成本的情况下，增加了沼气产量。
Household biogas digesters in northern cold areas usually can only operate 5 or 6 month under natural condition. Digesters in greenhouses can prolong biogas production period but could not get over the winter. This paper introduced a kind of digester heated by bio-energy producing layer. Reloading the layer stock every 60 to 70 days and 2 or 3 times a year can make the digester get over of the winter smoothly.
出处
《中国沼气》
2009年第6期34-37,共4页
China Biogas
基金
国家公益性行业基金资助项目(2007-12-1)
关键词
北方寒区
生物质热能沼气池
越冬产气
增温设施
northern cold areas
biogas digester
biogas production
heating by bioenergy producing layer
gas getting over of winter
