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Organic fertilizer prepared from chlortetracycline residues and preparation method of organic fertilizer

An organic fertilizer, chlortetracycline technology, applied in the field of organic fertilizers, can solve the problems of difficulty in fertilizer preparation, chlortetracycline residue, long processing time, etc.

Inactive Publication Date: 2018-12-21
FUJIAN FUKANG PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the fertilization process of chlortetracycline slag, the viscosity of chlortetracycline slag is too high to be separated from the fermentation liquid, and it is difficult to prepare fertilizers; at the same time, the existing fermentation process is carried out at room temperature, relying on the growth of the slag pile itself The heat production effect degrades aureomycin, and the composting process takes a long time, and there are still aureomycin residues in the prepared organic fertilizer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Enzymatic separation: Add 2kg of reaction enzyme (papain) to 550kg of chlortetracycline fungus residue viscous (COD value 18000mg / L), mix well, adjust the pH value to 4.8-5.8 with ammonia water, and heat it at 20-30℃ After standing still for 1 hour, solid-liquid separation was carried out to obtain 500 kg of aureomycin slag after enzymolysis;

[0021] Fermentation: Add 500kg of aureomycin residue after enzymolysis to 30kg of rice bran, mix evenly, add 3kg of fermentation complex bacteria (Penicillium punctatus LJ236 strain: Penicillium oxalicum LJ302 strain = 1:2), and ferment at 20-70°C. During the fermentation process, the mixture was turned every 2 to 4 days, and after 10 to 30 days of fermentation, it was dried, sieved, and granulated to obtain 532 kg of organic fertilizer.

[0022] The obtained organic fertilizer organic matter content of embodiment 1 (on a dry basis) 72% total nutrient (N+P 2 o 5 +K 2 (0, dry basis)>=7.2%, aureomycin was not detected.

Embodiment 2

[0024] Enzymatic separation: add reaction enzyme (xylanase: subtilisin: β-glucose: α-amylase: mannanase to 550 kg of chlortetracycline slag viscous material (COD value 20000 mg / L) = 1:1:1:1:1 compound enzyme) 3kg, after mixing evenly, use sodium dihydrogen phosphate and sodium bicarbonate mixed solution to adjust the pH value to 4.5~5.5, after standing for 2 hours at 20~30°C, Carry out solid-liquid separation to obtain 500 kg of aureomycin residue after enzymolysis;

[0025] Fermentation: Add 500kg of aureomycin residue after enzymolysis to 40kg of rice bran, mix evenly, add 4kg of fermentation complex bacteria (Penicillium punctatus LJ236 strain: Penicillium oxalicum LJ302 strain = 1:3), and ferment at 20-70°C. During the fermentation process, the mixture was turned every 2 to 4 days, and after 10 to 30 days of fermentation, it was dried, sieved, and granulated to obtain 543 kg of organic fertilizer.

[0026] The obtained organic fertilizer organic matter content of embodime...

Embodiment 3

[0028] Enzymatic separation: Add reaction enzymes (xylanase: subtilisin: β-glucose: α-amylase: mannanase to 550 kg of chlortetracycline slag viscous material (COD value 15000 mg / L) =1:2:1:2:1 compound enzyme) 2kg, after mixing evenly, use sodium bicarbonate solution to adjust the pH value to 5.0~6.0, after standing for 1 hour at 20~30°C, carry out solid-liquid separation to obtain 500kg of aureomycin residue after enzymolysis;

[0029] Fermentation: Add 500kg of aureomycin residue after enzymolysis to 45kg of rice bran, mix evenly, add 2kg of fermentation complex bacteria (Penicillium punctatus LJ236 strain: Penicillium oxalicum LJ302 strain = 1:4), and ferment at 20-70°C. During the fermentation process, the mixture was turned every 2 to 4 days, and after 10 to 30 days of fermentation, it was dried, sieved, and granulated to obtain 546 kg of organic fertilizer.

[0030] The obtained organic fertilizer organic matter content of embodiment 3 (on a dry basis) 85% total nutrient...

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Abstract

The invention relates to a method for preparing an organic fertilizer from chlortetracycline residues. The method comprises the following steps: enzymolysis separation: adding a reaction enzyme into chlortetracycline residue paste, adjusting a pH value to 4-7 with an inorganic base solution after uniform mixing, and carrying out solid-liquid separation after the mixture is kept in a static state for 1-2 hours at a temperature of 20-30 DEG C to obtain chlortetracycline residues subjected to enzymolysis; fermentation: adding rice bran into the chlortetracycline residues subjected to enzymolysis,mixing uniformly, adding fermented compound bacteria, carrying out fermentation at a temperature of 20-70 DEG C, turning over the mixture every 2-4 days during the fermentation, and carrying out drying, sieving and granulation after the fermentation continues for 10-30 days to obtain the organic fertilizer. According to the organic fertilizer prepared with the technique, the organic content (on adry basis) is equal to or larger than 70.0%, the total nutrient content (N+P2O5+K2O, on a dry basis) is equal to or larger than 7.0%, and no chlortetracycline is detected.

Description

technical field [0001] The invention relates to the field of organic fertilizers, in particular to an organic fertilizer prepared from aureomycin residue and a preparation method thereof. Background technique [0002] The current treatment and disposal technologies for antibiotic residues include incineration, fertilizer, feed, landfill, energy and other disposal technologies. The cost of incineration of antibiotic residues is high, the treatment of tail gas is difficult, and improper incineration may easily cause the multi-media transmission of toxic substances such as residual antibiotics. Therefore, incineration technology is rarely used to dispose of antibiotic residues in China. Antibiotic bacteria residues are used as feed, because they contain trace amounts of antibiotic ingredients, they cannot be completely removed during disposal, and drug resistance is likely to occur during use, and there are many potential safety hazards due to lack of safety experiments. Theref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F15/00C05F17/00
CPCC05F5/002C05F17/00C05F7/00C05F11/08Y02W30/40
Inventor 孙燕真
Owner FUJIAN FUKANG PHARMA
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