1.沼气池产气的基本条件沼气是有机物在厌氧条件下经微生物发酵分解释放的一种可燃性混合气体,其中甲烷占55%～70%,二氧化碳占25%～40%,此外还有少量氢气、硫化氢、氮和氨等。沼气发酵必须具备的6个基本条件是:(1)厌氧环境。即严格密闭的沼气发酵池。(2)充足优质的发酵原料。原料粪便要纯净,不含杂物。用于启动的粪便中的碳元素和氮元素之比一般为20～30﹕1,以25﹕1最好,如牛粪25﹕1,马粪 1. The basic conditions of biogas gas production Biogas is a flammable gas mixture of organic matter that is decomposed and released by microorganisms under anaerobic conditions. Methane accounts for 55% -70% and carbon dioxide accounts for 25% -40%. In addition, A small amount of hydrogen, hydrogen sulfide, nitrogen and ammonia. Biogas fermentation must have six basic conditions are: (1) anaerobic environment. That is strictly sealed biogas fermentation tank. (2) adequate high-quality fermentation materials. Raw material should be pure, without impurities. The ratio of carbon to nitrogen in the manure used for start-up is generally 20 to 30: 1, preferably 25: 1, such as cow dung 25: 1, horse manure