如何使沼气池在简便可行的管理条件下常年产气,是北方农村推广沼气的关键。为此,我们于1984年开始进行了“北方农村水压式沼气池两步干发酵常年产气工艺”的研究。一、材料和方法1、发酵装置:4个8立方米 ZC—81—3型整体浇筑水压式沼气池。拱盖采用“硅酸钠水泥素浆多夹层密封工艺”。 How to make biogas digesters produce gas year by year under simple and manageable conditions is the key to promoting biogas in the rural areas of northern China. To this end, we started in 1984, “North rural hydraulic biogas two-step dry fermentation gas production process” study. First, the material and methods 1, fermentation device: 4 8 cubic meters of ZC-81-3-type integral construction of biogas digesters. Arch cover with “sodium silicate paste interlayer sandwich process.”