A kind of harmless treatment method of antibiotic bacteria residue

A technology of antibiotic bacteria residue and harmless treatment, applied in the direction of microbial treatment, combined biological treatment, biological organic part treatment, etc., can solve secondary pollution and other problems, and achieve the effect of simple method and difficult treatment

Active Publication Date: 2022-05-24
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned technical problems, the present invention provides a harmless treatment method for antibiotic bacteria residues. Through ultraviolet ultrasonic combined oxidation treatment, while efficiently removing antibiotic residues in antibiotic bacteria residues, the reduction of resistance genes in antibiotic bacteria residues is realized, avoiding Reuse of antibiotic residues causes secondary pollution

Method used

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  • A kind of harmless treatment method of antibiotic bacteria residue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take antibiotic residue with gentamicin residue of 2600mg / kg, adjust the pH to 4.5, and heat to 50°C with a moisture content of 85%, and then follow the molar ratio of antibiotic: persulfate: copper = 1:50:8 Ammonium persulfate and copper powder were added to the antibiotic bacterial residue in turn, mixed uniformly, and then irradiated with 250 nm ultraviolet light, and oxidized under the condition of 200 KHz ultrasonic frequency for 30 min. The antibiotic slag must be treated harmlessly.

[0030] The preparation method of copper powder: adding nano-iron with an equimolar amount of copper ions to a copper sulfate solution with a concentration of 10g / L at 40°C under stirring conditions, stirring continuously until the solution is reddish-brown, and then suction filtration to obtain the upper layer material, drying That is, copper powder particles.

Embodiment 2

[0032] Take the antibiotic slag to adjust the pH value to 5, heat to 40°C after the moisture content is 90%, and then add ammonium persulfate and copper to the antibiotic slag in turn according to the molar ratio of antibiotic: persulfate: copper=1:30:10 The powder was mixed uniformly and oxidized for 40min under the condition of 280nm ultraviolet irradiation and 100KHz ultrasonic frequency. The antibiotic slag must be treated harmlessly.

[0033] The preparation method of copper powder: adding nano-iron with an equimolar amount of copper ions to a copper sulfate solution with a concentration of 10g / L at 40°C under stirring conditions, stirring continuously until the solution is reddish-brown, and then suction filtration to obtain the upper layer material, drying That is, copper powder particles.

Embodiment 3

[0035] Take the antibiotic slag to adjust the pH value to 3, heat to 60 ° C after the moisture content is 80%, and then add ammonium persulfate and copper to the antibiotic slag in turn according to the molar ratio of antibiotic: persulfate: copper = 1:40:5 The powder was mixed uniformly and oxidized for 20min under the condition of 200nm ultraviolet irradiation and 150KHz ultrasonic frequency. The antibiotic slag must be treated harmlessly.

[0036] The preparation method of copper powder: adding nano-iron with an equimolar amount of copper ions to a copper sulfate solution with a concentration of 10g / L at 40°C under stirring conditions, stirring continuously until the solution is reddish-brown, and then suction filtration to obtain the upper layer material, drying That is, copper powder particles.

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Abstract

The present invention relates to the technical field of harmless treatment of antibiotic slag, in particular to a method for the harmless treatment of antibiotic slag. Specifically, persulfate is used as an oxidant and copper powder is used as an activator, and after ultrasonic oxidation treatment under ultraviolet conditions Realize the harmless treatment of antibiotic slag; the invention uses ultraviolet ultrasonic combined oxidation treatment to efficiently remove antibiotic residues in antibiotic slag and at the same time realize the reduction of resistance genes in antibiotic slag, avoiding secondary damage caused by the reuse of antibiotic slag occurrence of pollution problems. The method is simple, efficient, does not require excessive chemical reagents and harsh conditions, and will not produce secondary pollution. It is a clean and sustainable technology. It is verified by experiments that the residual amount of antibiotics in the harmless antibiotic residue obtained by the method of the present invention is less than 1 mg / kg, and the removal efficiency of antibiotics can be 99.99% within 40 minutes, and the removal rate of resistance genes is greater than 6log.

Description

technical field [0001] The invention relates to the technical field of harmless treatment of antibiotic bacterial residues, in particular to a method for the harmless treatment of antibiotic bacterial residues. Background technique [0002] Antibiotic slag refers to the mycelial residue produced in the fermentation production process of antibiotics, which belongs to industrial waste. Antibiotics are commonly used to promote livestock growth and prevent disease, but the misuse of antibiotics and incorrect follow-up methods of drugs can lead to antibiotics and their metabolites and transformation products into hospital and municipal wastewater. In the environment, antibiotics are not only chemical pollutants, but also induce the production of resistance genes and drug-resistant bacteria, and even "super bacteria" carrying multiple resistance genes appear, making antibiotic treatment ineffective, and harming the ecological environment and human health. Cause potential harm; th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/70C05G1/00C05F17/00C05F17/20C05F17/50C05G5/12
CPCB09B3/00C05C3/00C05F17/20C05F17/50C05F17/00C05G5/12C05D9/02C05F3/00C05F5/008C05F11/08Y02W30/40
Inventor 刘惠玲戴晓虎蔡辰
Owner TONGJI UNIV
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