我国农村水压式沼气池发酵产气和贮气在一个池内,产气时池内发酵液从连通管排向水压间,排液体积的多少即是当时的贮气量。实践证明这种池型有几个缺点:一是池内压强变化大,极不稳定,产气多压力大时,影响产气率并对池体有破坏作用;二是池内无效容积大,死区多,池容利用率低;三是气箱部位形成很厚一层壳,这部分发酵 China’s rural hydropower biogas fermentation gas and gas production in a pool, the gas production tank when the fermentation liquid from the connecting pipe row, the amount of drainage volume is the amount of gas storage at the time. Practice has proved that this type of pool has several shortcomings: First, the pressure changes in the pool is large, very unstable, multi-gas pressure, the impact of gas production rate and have a damaging effect on the pool; Second, the pool invalid volume, dead zone More, the pool capacity utilization is low; Third, the formation of a thick layer of gas tank shell, which part of the fermentation