Biogas production method combined with production of organic fertilizer

Abstract

The invention relates to a biogas production method combined with the production of an organic fertilizer. By adopting the method, the technical difficult problems that the production of biogas is affected by low temperature, and the production cost is high can be solved. The production of the organic fertilizer and the production of the biogas are combined, organic fermentation products are arranged at the bottom and on the periphery of an anaerobic fermentation tank, and heat energy is provided for the production of the biogas by utilizing anaerobic fermentation. The anaerobic fermentation tank selects a soft fermentation bag, an adopted biogas production device comprises the soft fermentation bag, a support framework is designed according to the size of the soft fermentation bag, a space is left between the framework and the ground, an enclosing wall is constructed at not less than 500mm away from the periphery of the support framework, the ground is soft soil and water accumulation can be avoided. A feed port is fixed on the wall, a discharge port can be lifted freely, a material mixing region is arranged between the wall and an external wall, and a slope is designed for facilitating the work. By adopting the biogas production method, the production of the biogas can be performed synchronously with the production of the organic fertilizer, the space is saved, the treatment of biogas slurry and biogas residue is more convenient, and the production of the biogas can be sustainedly performed in winter in the North.

Description

technical field [0001] The invention relates to a biogas production method combined with organic fertilizer production, in particular to a method for ensuring continuous production of biogas by utilizing biological compost fermentation to generate heat and increase temperature. It belongs to the field of rural waste resource utilization and new energy development. Background technique [0002] Biogas production technology has been promoted in my country for many years, and it is basically mature and widely used in the vast southern regions. However, in most parts of northern my country, especially in areas where the average temperature is below -10°C from November to February of the following year, the normal gas production can only last for 3-4 months each year, and there are still many problems in the promotion of biogas technology. Great difficulty. At present, the construction techniques of biogas digesters widely used in our country are mainly divided into three types:...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a biogas combined with organic fertilizer production to solve the technical problem that the input and output of the current biogas production in the north cannot be proportional, that is: due to the low temperature in winter, the biogas cannot be continuously produced or the continuous production cost is high. production method

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