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温度是沼气发酵的重要条件,温度适宜则细菌繁殖旺盛,产气多。冬季温度低,不利于沼气发酵产气,有些沼气池甚至出现冻裂。因此,加强沼气池冬季管理十分重要。发酵温度通常分为3个范围:46～60℃高温发酵,28～38℃中温发酵,10～26℃常温发酵。当温度在8℃以下时,仅能产生微量沼气。所以农村沼气池在冬天必须采取越冬措施,以保证正常产气。
Temperature is an important condition for biogas fermentation, the temperature is suitable for breeding bacteria strong, more gas. The winter temperature is low, is not conducive to biogas fermentation gas production, and some digesters even appear cracking. Therefore, it is very important to strengthen the management of digesters in winter. Fermentation temperature is usually divided into three ranges: 46 ~ 60 ℃ high temperature fermentation, 28 ~ 38 ℃ medium temperature fermentation, 10 ~ 26 ℃ room temperature fermentation. When the temperature is below 8 ℃, only a trace amount of biogas can be generated. Therefore, rural biogas digesters must take winter measures to ensure normal gas production.