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CN-121974748-A - Agricultural waste-based bio-organic fertilizer production method

CN121974748ACN 121974748 ACN121974748 ACN 121974748ACN-121974748-A

Abstract

The application relates to the technical field of bio-organic fertilizers, in particular to a method for producing a bio-organic fertilizer based on agricultural wastes. The production method of the bio-organic fertilizer comprises the following steps of S1, mixing a carbonized substance and nano hydroxyapatite, carrying out ultrasonic treatment to obtain a carbonized mixture, S2, mixing the carbonized mixture and a composite microbial agent, carrying out anaerobic fermentation to obtain an anaerobic material, S3, carrying out aerobic fermentation on the anaerobic material to obtain an aerobic material, S4, adding potassium humate, sodium lignin sulfonate and polyglutamic acid into the aerobic material, and uniformly mixing to obtain the bio-organic fertilizer. The production method of the bio-organic fertilizer effectively solves the problems of environmental pollution and soil degradation caused by open-air incineration of agricultural wastes.

Inventors

  • LI KUNPENG
  • ZHOU WEIDONG
  • Lai Lianchun
  • YU RONGSHENG
  • YE SILIN
  • YE CHANGCHENG

Assignees

  • 北海湾贝海洋科技有限公司

Dates

Publication Date
20260505
Application Date
20260203

Claims (10)

  1. 1. The production method of the bio-organic fertilizer based on the agricultural waste is characterized by comprising the following steps of: S1, mixing a carbonized product and nano hydroxyapatite, and performing ultrasonic treatment to obtain a carbonized mixture; crushing agricultural waste, and carbonizing for 4-5 hours at the temperature of 250-300 ℃ in a nitrogen atmosphere; S2, mixing the carbonization mixture and the composite microbial agent, and performing anaerobic fermentation to obtain an anaerobic material; the composite microbial agent comprises the following raw materials in parts by mass: 30-35 parts of nitrogen-fixing enterobacteria, 20-25 parts of phosphorus-dissolving pseudomonas, 10-15 parts of bacillus subtilis, 5-8 parts of bacillus beijerinus and 2-4 parts of trichoderma; S3, carrying out aerobic fermentation on the anaerobic material to obtain an aerobic material; S4, adding potassium humate, sodium lignin sulfonate and polyglutamic acid into the aerobic material, and uniformly mixing to obtain the biological organic fertilizer.
  2. 2. The method for producing a bio-organic fertilizer according to claim 1, wherein the particle size of the nano-hydroxyapatite is 20nm to 50nm.
  3. 3. The method for producing the bio-organic fertilizer according to claim 1, wherein the ultrasonic treatment is carried out at a frequency of 50kHz for 30 to 45 minutes.
  4. 4. The production method of the bio-organic fertilizer according to claim 1, wherein the mass ratio of the carbonized product to the nano-hydroxyapatite is 1:0.10-0.15; And/or the mass ratio of the charring mixture to the composite microbial agent is 1:0.05-0.08; And/or the mass ratio of the aerobic material to the potassium humate to the sodium lignin sulfonate to the polyglutamic acid is 1:0.10-0.15:0.05-0.08:0.02-0.04.
  5. 5. The production method of the bio-organic fertilizer according to claim 1, wherein the anaerobic fermentation is carried out under the conditions that the oxygen content is lower than 0.1%, the temperature is 35-40 ℃ and the time is 5-7 days in the fermentation process; and/or the aerobic fermentation condition is that the oxygen content is 20-30% in the fermentation process, the temperature is 50-55 ℃ and the time is 10-15 days.
  6. 6. The method of claim 1, wherein the agricultural waste comprises at least one of corn stover, rice hulls, and bagasse.
  7. 7. The method for producing a bio-organic fertilizer according to claim 1, wherein a chitin treated matter is further added in the step S1, and the mixture is mixed with the carbonized treated matter and the nano-hydroxyapatite, and subjected to ultrasonic treatment to obtain a carbonized mixture; in the step S2, the composite microbial agent further comprises 30-35 parts of bacillus licheniformis.
  8. 8. The method for producing a bio-organic fertilizer according to claim 7, wherein the mass ratio of the carbonized product, the nano-hydroxyapatite and the chitin product is 1:0.10-0.15:0.4-0.5.
  9. 9. The method for producing a bio-organic fertilizer according to claim 7 or 8, wherein the process for preparing the chitin treated matter comprises: Acidifying and enzymolysis the chitin waste to obtain chitin treated matter; and/or, the preparation process of the chitin treated matter comprises the following steps: Crushing chitin waste to 1 cm-2 cm, adding citric acid, stirring for 5 h-6 h at 30 ℃, filtering and washing to be neutral, adding protease, carrying out enzymolysis for 3 h-4 h at 40 ℃, filtering and washing to remove protein, wherein the addition amount of the protease is 0.5% of the mass of the chitin waste; And adding chitosanase, carrying out enzymolysis for 4-5 hours at 35 ℃, filtering, and crushing to 100 meshes to obtain the chitin treated substance.
  10. 10. The method of claim 9, wherein the chitin treatment comprises at least one of shrimp shell, crab shell, or insect molting.

Description

Agricultural waste-based bio-organic fertilizer production method Technical Field The application relates to the technical field of bio-organic fertilizers, in particular to a method for producing a bio-organic fertilizer based on agricultural wastes. Background Agricultural wastes, especially crop straw residues, can cause multiple environmental and safety risks if improperly disposed (such as open air incineration), namely release a large amount of sulfur dioxide and inhalable particles in the incineration process, so that atmospheric pollution is caused and respiratory diseases are induced, generated smoke obviously reduces visibility, increases traffic accident occurrence probability, inactivates soil microbial communities under high temperature, so that soil fertility is attenuated and structural hardening is aggravated, and in addition, hidden danger of igniting peripheral inflammables exists, so that life and property safety is endangered. For this purpose, the application provides a method for producing a bio-organic fertilizer based on agricultural waste. Disclosure of Invention In order to overcome the defects of the prior art, the application provides a production method of a bio-organic fertilizer based on agricultural wastes, which effectively solves the problems of environmental pollution and soil degradation caused by open-air incineration of the agricultural wastes by compounding carbonized substances with nano hydroxyapatite and combining a multi-strain synergistic fermentation process. The technical scheme adopted for solving the technical problems is as follows: the production method of the bio-organic fertilizer based on the agricultural waste comprises the following steps: S1, mixing a carbonized product and nano hydroxyapatite, and performing ultrasonic treatment to obtain a carbonized mixture; S2, mixing the carbonization mixture and the composite microbial agent, and performing anaerobic fermentation to obtain an anaerobic material; crushing agricultural waste, and carbonizing for 4-5 hours at the temperature of 250-300 ℃ in a nitrogen atmosphere; the composite microbial agent comprises the following raw materials in parts by mass: 30-35 parts of nitrogen-fixing enterobacteria, 20-25 parts of phosphorus-dissolving pseudomonas, 10-15 parts of bacillus subtilis, 5-8 parts of bacillus beijerinus and 2-4 parts of trichoderma; S3, carrying out aerobic fermentation on the anaerobic material to obtain an aerobic material; S4, adding potassium humate, sodium lignin sulfonate and polyglutamic acid into the aerobic material, and uniformly mixing to obtain the biological organic fertilizer. In some embodiments, the nano-hydroxyapatite has a particle size of 20nm to 50nm. In some embodiments, the frequency of the ultrasonic treatment is 50kHz and the time is 30 min-45 min. In some embodiments, the mass ratio of the carbonized product to the nano hydroxyapatite is 1:0.10-0.15; And/or the mass ratio of the charring mixture to the composite microbial agent is 1:0.05-0.08; And/or the mass ratio of the aerobic material to the potassium humate to the sodium lignin sulfonate to the polyglutamic acid is 1:0.10-0.15:0.05-0.08:0.02-0.04. In some embodiments, the anaerobic fermentation is carried out under the conditions that the oxygen content is lower than 0.1 percent, the temperature is 35-40 ℃ and the time is 5-7 days in the fermentation process; and/or the aerobic fermentation condition is that the oxygen content is 20-30% in the fermentation process, the temperature is 50-55 ℃ and the time is 10-15 days. In some embodiments, the agricultural waste comprises at least one of corn stover, rice hulls, bagasse. In some embodiments, chitin treated matter is further added in the step S1, and is mixed with the carbonized treated matter and the nano hydroxyapatite, and is subjected to ultrasonic treatment to obtain a carbonized mixture; in the step S2, the composite microbial agent further comprises 30-35 parts of bacillus licheniformis. In some embodiments, the mass ratio of the charred product, the nano-hydroxyapatite and the chitin is 1:0.10-0.15:0.4-0.5. In some embodiments, the chitin treatment is prepared by a process comprising: Acidifying and enzymolysis the chitin waste to obtain chitin treated matter; and/or, the preparation process of the chitin treated matter comprises the following steps: Crushing chitin waste to 1 cm-2 cm, adding citric acid, stirring for 5 h-6 h at 30 ℃, filtering and washing to be neutral, adding protease, carrying out enzymolysis for 3 h-4 h at 40 ℃, filtering and washing to remove protein, wherein the addition amount of the protease is 0.5% of the mass of the chitin waste; And adding chitosanase, carrying out enzymolysis for 4-5 hours at 35 ℃, filtering, and crushing to 100 meshes to obtain the chitin treated substance. In some embodiments, the chitin treatment comprises at least one of shrimp shell, crab shell, or insect molting. Compared with the prior art, the application