Biogas residue-biological carbon organic compound fertilizer and preparation method thereof

Abstract

The invention provides biogas residue-biological carbon organic compound fertilizer and a preparation method thereof. The biogas residue-biological carbon organic compound fertilizer is prepared from the following raw materials: biogas residue, biological carbon, conventional fertilizer, a mineral powder adhesive, a compound microorganism bacterium agent, a granulation adhesive and a film coating material; the preparation method of the compound fertilizer comprises the following steps: carrying out high-temperature cracking on straws to prepare the biological carbon; collecting the biogas residues which are generated in an anaerobic fermentation process of organic wastes; after mixing the prepared biological carbon with the biogas residues and the conventional fertilizer and melting, granulating; carrying out screening and film coating on grains to prepare the biogas residue-biological carbon organic fertilizer. The organic compound fertilizer provided by the invention sufficiently utilizes the residual straws and biogas residues and has the advantages of slowly releasing the fertilizer, improving soil, fixing carbon and reducing emission and the like; the biogas residue-biological carbon organic compound fertilizer is nutritional and is scientifically matched; when the biogas residue-biological carbon organic compound fertilizer is matched with conventional chemical fertilizer and then is applied, the fertilizer efficiency and the utilization rate can be further improved and the yield and quality of crops are remarkably improved. The method provided by the invention has the advantages of relatively low cost, a simple and feasible proces, and is suitable for large-scale popularization.

Description

technical field [0001] The invention relates to a biogas residue-biochar organic compound fertilizer and a preparation method thereof. Background technique [0002] About one-third of the crop stalks in rural areas of our country are not used, and a large part of them are burned directly, which not only wastes high-grade biomass resources, but also leads to a series of environmental pollution problems. If these straws can be used as raw materials for the production of agricultural biochar, not only can biomass resources be effectively utilized, high-quality biochar products can be obtained, and environmental problems caused by straw burning and other processing methods can be avoided. With the rapid development of the economy and industrial scale, anaerobic digestion treatment technology is being promoted on a large scale in many fields. Oxygen digestion technology for biogas production, etc. This series of anaerobic fermentation projects are accompanied by a large amount o...

AI Technical Summary

Problems solved by technology

[0002] About one-third of the crop straws in rural areas of our country are not used, and a large part of them are burned directly, which not only wastes high-grade biomass resources, but also leads to a series of environmental pollution problems

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