Since 2011, Shandong Province has paid close attention to the implementation of biogas based rural energy construction projects. For large and medium-sized livestock and poultry farms, biogas production, organic fertilizer production and breeding pollutant treatment are organically combined, and centralized pollution control in breeding areas is implemented; Ecological biogas project should be built in small-scale farms in rural areas to solve the contradiction of fuel, fertilizer and feeding. The capacity of all kinds of biogas digesters is up to 20000 cubic meters, and the newly-built large-scale breeding farms are all equipped with manure treatment areas, so as to realize the return of breeding pollutants to the field after treatment, without direct emission, which greatly protects the surrounding environment. After desulfurization, the breeding biogas can be comprehensively utilized, such as heating, lighting, power generation, cooking, etc., saving 6000 tons of standard coal per year.
Biogas production from livestock manure is a relatively mature energy technology at present. Improving the availability of raw materials and increasing the number and activity of microorganisms are effective measures to improve the efficiency of biogas fermentation. Large scale biogas project is not in the demonstration period, and many problems in the whole industrial chain still need to be solved.
It is an important way to solve rural pollution to develop agricultural circular economy and increase biogas conversion technology. As a kind of clean distributed energy, biogas extracted natural gas can replace petrochemical natural gas and be used as vehicle fuel and residential gas, which is an important way of high value and energy utilization of biogas. The development of rural biogas and the realization of resource utilization of livestock manure are of great significance to the development of rural clean energy, the prevention and control of rural air pollution, and the promotion of the development of ecological circular agriculture It is of great significance to improve the rural living environment and consolidate the achievements of ecological environment construction.
The development and utilization of biogas in rural areas is fully in line with the overall requirements of industrial prosperity, ecological livability, rural civilization, effective governance and affluent life, and has broad development space.
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