Hubei Straw Biogas Development Condition Investigation And Countermeasures

Crop stalks (CSS) are rich in organic matter (about 80-90%), is a kind of important biomass energy. The existing technology, can be abandoned crops straw into highly efficient and clean, convenient, high energy. Biogas can ease the tension of conventional energy in China, such as power supplies or fuel consumption have certain positive effect, and has an important significance to promote the sustainable development of society and economy and improve the ecological environment.The annual output about Xiantao of Hubei province crops straw 113.7 tons, available resources for 86.68 tons. At present, this city has crops straw 45.48 tons, accounting for 40% of the production, and the use of crops straw confined to the home with fuel, the straw methane, and cattle feed and edible fungus base. In addition, concerning the using technology of straw return fields is also extensive return fields directly, and without crushing or compost heap retting, basic approach, it also affected the straw return fields effect. This paper suggests, for the crops straw 86.68 tons of available resources for effective planning and application. Suggest development and introduce new feed processing mode, reduce crop direct combustion, realize crops straw from fuel to feed transformation. For straw counters-field technology, the direct suggestion conducting scientific exhaustive field investigation, analyzes the soil organic matter content of soil. Based on soil organic matter information, then the ratio of straw, adjust its organic information balance relationship. Collect the rest of the straw, develop energy-oriented use way. Planning objectives is straw counters-field 25.31 tons, straw biogas digestive 10 tons, straw gasification coking cost 4 tons, crop stalks feedstuff consumes 2 tons, other consumption 3 tons.By vertical push is streamed anaerobic digestion process at xiantao, blunt about the order in accordance with the feeding is descending into layered vertical rely on adaptive, discharging pressure from the bottom residues of fermentation backflow equipped excretion, spray systems anaerobic digestion process. Main scope of village and township community in gas or electricity centralized supply. Biogas in design load range, by adjusting the straw's quantity, can satisfy the sizes of straw productivity and gas production.Aiming at straw fermentation biogas existing problems, we should actively learn and borrow foreign successful experience, using crops straw or other biomass energy on anaerobic ferment produce biogas of large and medium-sized project (such as gas electricity mode), and adjust the straw ferment produce biogas development mentality, find the new situation of the local rural development.