近年来,随着国家对能源建设项目投资力度的加 大,农村建设了大量的沼气池。但是,入冬后受气温的 影响,沼气池微生物活力下降,发酵原料分解速度减 慢,产气量降低,沼气用具难以使用。为保证沼气池安 全越冬,正常产气,在入冬前就要搞好增温保温,防止 池体冻坏无法正常工作,使沼气池发酵维持在较好水 平,达到较高的产气量。 In recent years, with the increase of investment in energy construction projects by the state, a large number of digesters have been built in rural areas. However, due to the influence of temperature after winter, the microbial activity of biogas digesters decreased, the decomposition rate of fermentation materials slowed down, gas production decreased, and biogas appliances were difficult to use. In order to ensure the safety of biogas digesters over the winter and normal gas production, it is necessary to improve the temperature and keep warm before winter so as to prevent the freezing of the digesters from working properly and to maintain the biogas digester fermentation at a good level so as to achieve higher gas production.