一、沼气池建造不按标准操作,重数量、轻质量。因而留下一些病态池、废池。二、过于强调建池速度,使资金和材料供不应求,不得不用低质量的代用材料建池。例如,用低标号混凝土建造的沼气池耐久性较差,经不起干旱,有些池子使用一两年就报废了。因此,有的沼气户说,我们所建成的沼 First, digesters built not according to standard operation, heavy quantity, light weight. So leave some sick pool, waste pool. Second, too much emphasis on the construction of the pool speed, so that funds and materials in short supply, had to use low-quality alternative materials to build the pool. For example, digesters built with low-grade concrete are less durable and can not withstand drought, with some tanks scrapped in a year or two. Therefore, some biogas households said that we built the marsh