Control method of antibiotic resistance gene of livestock residue

A technology of breeding waste and drug-resistant genes, which is applied in the field of control of antibiotic-resistant genes of breeding waste, can solve problems such as environmental secondary pollution, and achieve the effects of eliminating potential risks, good environmental benefits and economic benefits

Pending Publication Date: 2018-06-12
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

This invention is mainly to study the use of sludge biochar, and there is no mention of whether ther

Method used

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Examples

Experimental program
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Example Embodiment

[0024] Example 1: Control of antibiotic resistance genes in aquaculture waste

[0025] Adjust the moisture content: firstly, it will be taken from livestock and poultry farms, the moisture content is 75%, and the relative abundance of antibiotic resistance genes (macrolides and sulfonamides) is 3.4×10 -1 The left and right (quantitatively determined by PCR) livestock and poultry manures are mixed with biomass waste (sawdust, or bamboo chips, or rice husks) according to the weight ratio of livestock and poultry manure to biomass waste of 1.0:1.5. reduced to 30%.

[0026] Pyrolysis: The mixture of livestock and poultry manure after adjusting the moisture is continuously sent into the external thermal pyrolysis furnace by means of screw conveying, and the solid material is obtained by pyrolysis treatment in an oxygen-free or oxygen-deficient atmosphere. The pyrolysis temperature is 600 °C. °C, and the pyrolysis time was 90 min.

[0027] Cooling: The above solid material is cool...

Example Embodiment

[0028] Example 2: Control of antibiotic resistance genes in aquaculture waste

[0029] Adjust the moisture content: firstly, it will be taken from livestock and poultry farms, the moisture content is 50%, and the relative abundance of antibiotic resistance genes (polypeptides, tetracyclines and aminoglycosides) is 3.0 × 10 -3 The left and right livestock and poultry manure (quantitatively determined by PCR) is mixed with biomass waste (sawdust or rice husk) according to the weight ratio of livestock and poultry manure to biomass waste of 1.0:0.5, and then its moisture content is reduced to 20% .

[0030] Pyrolysis: The mixture of livestock and poultry manure after adjusting the moisture is continuously sent into the external thermal pyrolysis furnace by means of screw conveying, and is subjected to pyrolysis treatment in an oxygen-free or anoxic atmosphere to obtain solid substances. The pyrolysis temperature is 700 ℃, the pyrolysis time is 60min.

[0031] Cooling: The above...

Example Embodiment

[0032] Example 3: Control of antibiotic resistance genes in aquaculture waste

[0033] Adjust the moisture content: First, it will be taken from livestock and poultry farms with a moisture content of 90%, and the abundance of antibiotic (quinolones, polypeptides and aminoglycosides) resistance genes is 1.5 × 10 -5The left and right (quantitatively determined by PCR) livestock and poultry manures are mixed with biomass waste (wood chips, or bamboo chips, or rice husks, or husks) according to the weight ratio of livestock and poultry manure to biomass waste of 1.0:1.25 , its moisture content is reduced to 35%.

[0034] Pyrolysis: The mixture of livestock and poultry manure after adjusting the moisture is continuously sent into the external thermal pyrolysis furnace by means of screw conveying, and is subjected to pyrolysis treatment in an oxygen-free or oxygen-deficient atmosphere to obtain solid substances. The pyrolysis temperature is 800 ℃, the pyrolysis time is 30min.

[0...

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Abstract

The invention discloses a control method of an antibiotic resistance gene of livestock residue, which includes steps of mixing livestock residue containing the antibiotic resistance gene with biomasswaste to reduce moisture content to be less than 40%; continuously delivering livestock residue to an external heating type pyrolyzing furnace through a spiral conveying method, and performing pyrolyzing treatment in the atmosphere of oxygen-free or oxygen deficiency; completely decomposing antibiotic resistance gene microorganisms in excrement to obtain a solid matter; cooling the solid matter without oxidization in the atomosphere of oxygen deficiency to obtain charcoal. In virtue of high temperature process of the pyrolytic process, the antibiotic resistance gene microorganisms in the livestock residue can be decomposed on a molecular level, thus the potential risk of the antibiotic resistance gene is completely and safely eliminated; meanwhile, massive combustible gaseous matters generated during the pyrolyzing process can be circularly burned to be pyrolyzing energy source; the antibiotic resistance gene has the advantages of clean combustion and energy-saving emission reduction,the acquired charcoal has good physicochemical property and wide application.

Description

technical field [0001] The invention relates to the field of harmless treatment of solid waste in the farming industry, in particular to a method for controlling antibiotic resistance genes of the farming waste. Background technique [0002] my country is a big country in the production and use of antibiotics, and the important application field is the livestock and poultry breeding industry. According to literature statistics, among the 162,000 tons of antibiotics used in my country in 2013, 52% were used for animals and 48% for humans. Among the antibiotics used to promote growth and treat diseases in animals, only a small part of the antibiotics are used by animals, and most of the antibiotics and the resistance genes induced in animals are directly excreted with the urine and feces of animals in vitro. If these untreated livestock and poultry manures are directly used as agricultural fertilizers, they will put considerable pressure on the microorganisms in the soil env...

Claims

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Application Information

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IPC IPC(8): C10B53/02C10B53/00C10B57/10B01J20/20B01J20/30
CPCB01J20/20C10B53/00C10B53/02C10B57/10Y02E50/10
Inventor 汪印朱永官李春星周雪乔敏
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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