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(阅读材料)环境污染是当今世界急需解决的一大难题,寻找新的能源是其中一条捷径。沼气、太阳能都是比较理想的绿色新能源、循环能源。沼气是利用人畜粪便、秸秆等各种有机物在密闭的沼气池内,在没有氧气条件下,被种类繁多的沼气发酵微生物分解转化,最终产生的一种混合物。在这个过程中,微生物是最活跃的因素,它们把各种固体或是溶解状态的复杂有机物,按照各自的营养需要,进行分解转化,最终生成沼气。沼气的主要成分是
(Reading) Environmental pollution is an urgent problem to be solved in the world today. Searching for new energy sources is one of the shortcuts. Biogas, solar energy is the ideal green new energy, recycling energy. Biogas is a kind of mixture that is produced by decomposing and transforming a great variety of biogas fermenting microorganisms under the condition of no oxygen in the manure and manure, stalks and other organic matters in a closed digester. In this process, microorganisms are the most active factors. They decompose and transform all kinds of solid or dissolved complex organic matter according to their respective nutritional needs, and finally generate biogas. The main component of biogas is