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Method for preparing organic fertilizer from tetracycline antibiotic dregs

A technology of antibiotic bacteria residues and tetracyclic residues, which is applied in the field of harmless treatment and resource utilization of tetracyclic antibiotic residues, can solve the problem of high treatment cost of tetracyclic antibiotic residues, and achieves a low degree of damage and high production efficiency. The effect of simple process and high safety in use

Inactive Publication Date: 2017-11-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention solves the problems of high processing cost of the existing tetracyclic antibiotic residues and environmental risks after treatment, and provides a method for producing organic fertilizer by using the tetracyclic antibiotic residues

Method used

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specific Embodiment approach 1

[0026] Specific embodiment one: a kind of method utilizing tetracyclic antibiotic bacterium slag of the present embodiment to produce organic fertilizer, it is carried out according to the following steps:

[0027] 1. Collect fresh antibiotic residues, add water to adjust the moisture content to 80-90%, and obtain the residues to be treated;

[0028] 2. Adjust the pH of the bacteria residue to be treated to 5.5-6.5 with a NaOH solution with a concentration of 5M;

[0029] 3. Add persulfate as an oxidant and ferrous sulfate as an activator to the bacterium residue treated in step 2, and mix well; wherein, the molar ratio of tetracyclic antibiotics, persulfate and iron in the bacterium residue is 1 :60~80:1;

[0030] 4. Place the fungus residue treated in step 3 in a water bath at 65-95°C, and oxidize it for 0.3-1.0 hours;

[0031] 5. After the completion of the reaction, the bacterial residue is cooled to room temperature, centrifuged for 20 minutes at a speed of 4000-8000r / m...

specific Embodiment approach 2

[0034] Embodiment 2: This embodiment differs from Embodiment 1 in that the molar ratio of tetracyclic antibiotics, persulfate and iron in the fungus residue is 1:65-80:1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0035] Embodiment 3: This embodiment differs from Embodiment 1 in that the molar ratio of tetracyclic antibiotics, persulfate and iron in the fungus residue is 1:70-80:1. Others are the same as in the first embodiment.

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PUM

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Abstract

The invention discloses a method for preparing organic fertilizer from tetracycline antibiotic dregs, relates to a harmless treatment and resource utilization method of tetracycline antibiotic dregs and aims to solve the problems that the treatment cost of the existing tetracycline antibiotic dregs is high, environment risks still exist after treatment and the like. With persulfate as an oxidant and ferrous sulfate as an activating agent, the tetracycline antibiotic dregs which have the residual quantity of tetracycline antibiotics being 1,000-2,500 mg / kg and have the pH of 2.0-4.5 are treated. By means of ferrous ions activated persulfate, the removal efficiency of tetracycline antibiotics is up to 99.5%, the sterilization capability is high, the treatment cycle is short, and treatment can be completed within 1 hour.

Description

technical field [0001] The invention relates to a method for harmless treatment and resource utilization of tetracyclic antibiotic bacteria residues. Background technique [0002] my country is a major producer of antibiotics. In 2011, my country's antibiotic output was 1.116 million tons, accounting for more than 70% of the global market. Among them, the annual output of the tetracyclic antibiotic oxytetracycline accounts for 90% of the global output. According to the estimation of 8-10 tons of wet bacteria residues produced per 1 ton of antibiotics, the amount of oxytetracycline bacteria residues produced in my country is more than 150,000 tons per year. Bacterial residues are rich in nutrients, but because they contain a small amount of antibiotic residues, in order to prevent the risk of bacterial resistance in the environment caused by antibiotic residues, antibiotic residues must first be treated to remove antibiotic residues before they can be used. If not handled p...

Claims

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Application Information

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IPC IPC(8): C05G3/00
CPCC05D1/02C05G3/00C05D9/02C05F5/006C05F11/02C05D9/00
Inventor 刘惠玲公丕成张岩香
Owner HARBIN INST OF TECH
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