Abstract：With the broad masses of rural industrial structure adjustment, the development from traditional decentralized breeding to modern large-scale intensive aquaculture, rural biogas waste raw material shortages. At the same time our country rural area has a large number of crops straw to produce each year. At present, although the state has already banned the burning of straw, but still many rural areas, incineration process produces a large number of smog and greenhouse gases not only caused serious influence to the environment, but also make the biomass energy wasted. Crop straw can be used as livestock and poultry dung such as lack of good fermentation under the condition of raw materials. But straw raw material with more fiber, surface wax, closely issues such as lignin, under the condition of normal temperature, fermentation raw material in the pool is not easy to digest, gas speed slow, water retention period is long, easy to form scum crusting, affect the rate of producing gas. In order to study the dry and fresh straw gas potential properties under the anaerobic fermentation, fermentation with dry, fresh corn straw as raw materials, physical and biological methods for pretreatment of straw raw material before into the pool, at 30 ℃ under the condition of constant temperature of anaerobic fermentation, the fermentation process is analyzed in the nissan volume, cumulative gas production and methane content and volatile fatty acid (VFA) change trend. This experiment combined with long problems in rural areas in practice in our country, aims to explore a simple and fast biogas anaerobic fermentation to produce marsh technology, provide theoretical basis for the majority of rural biogas technology promotion, agricultural industrial structure adjustment of our country, sustainable agricultural transformation has a very positive role as soon as possible.
Keywords：biomass energy, inoculum, anaerobic fermentation
1 前言 4
1.1 选题的目的及意义 4
2 厌氧发酵概况简述 4
2.1 沼气厌氧发酵的原理概况 4