What are the basic principles of biogas engineering construction?

Large and medium-sized biogas engineering technology is a rural energy engineering technology with the goal of developing and utilizing farm manure, obtaining energy and controlling environmental pollution, and realizing a virtuous cycle of agricultural ecology. What are the basic principles of biogas engineering construction?

Basic principles of biogas engineering construction:

1 the principle of resource utilization is the core content of agricultural waste pollution prevention and control. Agricultural waste is a valuable resource, which can be used as fuel, fertilizer, feed and industrial raw materials after treatment, and has great economic value. Making good use of agricultural waste resources can not only reduce environmental pollution, but also improve the physical and chemical properties of soil, improve soil fertility, improve the output and quality of agricultural products and increase the competitiveness of products. In other words, agricultural waste is a valuable resource. To prevent and control agricultural waste pollution, we should advocate the recycling and comprehensive utilization of livestock manure, improve added value, and adhere to the principle of combining utilization with pollution control.

2 Reduction Principle In view of the large pollution discharge of livestock and poultry farms, the reduction principle should be emphasized in pollution prevention and control, that is, by adjusting the production structure and carrying out cleaner production, the amount of pollutants produced can be reduced, thus reducing the treatment difficulty and treatment cost, and at the same time maximizing the fertilizer efficiency of agricultural wastes.

3 Harmless principle Agricultural wastes, especially a large number of pathogens in livestock manure, will bring potential harm to people and livestock. Therefore, before being used, the manure and sewage must be treated harmlessly, so that it will not adversely affect the growth of livestock and crops: the discharged sewage and manure will not pollute the land, groundwater and surface water. Sewage must be discharged in accordance with the standards stipulated by the state by selecting appropriate treatment technologies and technologies. However, the solid waste used for returning to the field needs to be dried and composted to reach the harmless standard to prevent biological pollution.

According to the basic principles of material circulation, energy flow and ecological virtuous circle, it is one of the main ways to solve the pollution of agricultural waste and the only way to realize the sustainable development of agriculture to closely combine planting with animal husbandry, new energy and fishery, and to raise and promote agriculture by farming. Strengthening the combination of agriculture and animal husbandry can not only reduce the environmental pollution caused by agricultural wastes, but also provide basic guarantee for the production of green food and organic food, and improve product quality and economic benefits, which is the main direction of agricultural development in China in the future.

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