Production scheme and preparation method of converting biogas slurry into organic fertilizer

Abstract

The invention relates to the field of preparation of high-quality organic fertilizer by recycling waste, and concentrates biogas slurry to obtain organic fertilizer and reusable water by utilizing the principle of reverse osmosis. The invention particularly relates to a production scheme and a preparation method of converting biogas slurry into organic fertilizer. The production scheme and the preparation method of converting biogas slurry into organic fertilizer are characterized by comprising the following steps: (A) sand filtration treatment: pumping the biogas slurry into a steel tank filled with quartz sand, and filtering out the large dross; (B) reverse osmosis treatment: pressurizing the biogas slurry, and separating water from the biogas slurry by using the principle of reverse osmosis, thereby obtaining the biogas slurry concentrate; (C) ozone sterilization: sterilizing the water obtained through the reverse osmosis with ozone, and recycling the water; (D) addition of effective ingredients: recycling the concentrated biogas slurry, carrying out the chemical examination, and adding corresponding ingredients according to different operating requirements; and (E) fermentation with beneficial bacteria: fermenting the prepared concentrate with beneficial bacteria and packaging.

Description

technical field [0001] The invention relates to the field of preparation of waste reuse high-quality organic fertilizers. The reverse osmosis principle is used to concentrate biogas slurry to obtain organic fertilizers and reusable water. Specifically, it is a production plan and a preparation method of converting biogas slurry to organic fertilizer. Background technique [0002] The use of anaerobic fermentation technology to treat organic waste can not only realize the harmless treatment of organic waste, but also recover useful substances, including the biogas generated can be used for power generation, lighting, heating, etc., and the fermented biogas residue and biogas slurry are still High-quality organic fertilizer can be used in farmland. [0003] Biogas slurry is a liquid product produced by anaerobic fermentation of organic waste. It is not only rich in nitrogen, phosphorus, potassium and other macroelements and zinc, selenium, magnesium and other trace elements, b...

AI Technical Summary

Problems solved by technology

[0004] However, the relative content of effective components of biogas slurry is relatively low, and the composition of biogas slurry in different biogas tanks is different, and the amount used per unit area is relatively large, resulting in limitations in the use of biogas slurry, resulting in a large amount of waste of biogas slurry, and even causing environmental damage. Pollution, so how to make biogas slurry more effective, make it more widely used, increase added value and avoid environmental pollution is creative

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