As an important part of renewable energy, biogas has gone through decades of development in the vast rural areas of China. Data show that the number of biogas users in China has reached tens of millions. With the promotion of urbanization and changes in rural production and lifestyle in recent years, new changes have taken place in rural biogas construction.
Compared with the traditional household biogas project, the new biogas purification project has great advantages in scale and skills. In the case of sufficient materials, it can not only produce biogas and purified high-purity biogas, but also directly use biogas to generate electricity.
Compared with solar energy, wind energy, water energy and other renewable clean power, large-scale biogas purification projects are less affected by the natural environment and can be built in most rural areas. Over the years, great efforts have been made to promote the prohibition of straw burning and the management of rural non-point source pollution, but in some areas, the pollution problems of straw burning and livestock manure still occur from time to time. The reason is that there is no good way to deal with it. The main materials of biogas project are straw and livestock manure, which can promote the prohibition of straw burning, improvement of atmospheric environment and reduction of rural non-point source pollution. This advantage can not be compared with other cleaning power. Biogas purification makes biogas more vigorous.