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Method for degrading sulfonamide antibiotics in decomposed livestock and poultry manure by using plant root exudates

A technology of livestock and poultry manure and plant roots, which is applied in the field of organic pollutant degradation, can solve the problems of catalyst active by-products, complicated operation, electrode pollution, etc., and achieves the effect of reducing antibiotic pollution, ensuring ecological cycle, and promoting degradation.

Active Publication Date: 2021-06-25
SHENYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the physicochemical method has high energy consumption, and the membrane technology is easy to cause membrane pollution. The advantage of the adsorption method is that the treatment effect is good, and the adsorbent can be recycled. The disadvantage is that the price of the adsorbent is high, and the subsequent treatment is easy to pollute the adsorption material.
There are many kinds of advanced oxidation methods, and the advantages are also high efficiency, but photooxidation has the disadvantages of cumbersome preparation of catalysts, high energy consumption, and cumbersome operations.
The advantage of electrochemical oxidation is that it does not consume chemical substances and is easy to operate, but it is related to the current density. The increase of the current density leads to a decrease in process efficiency. At the same time, there are problems such as electrode life and electrode pollution caused by the deposition of organic matter on the surface.
Fenton oxidative degradation of sulfonamide antibiotics, the main problem is the activity of the catalyst and the formation of by-products in the degradation process

Method used

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  • Method for degrading sulfonamide antibiotics in decomposed livestock and poultry manure by using plant root exudates

Examples

Experimental program
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Embodiment 1

[0019] 1. In a small chicken farm in Guyushu Town, Changtu County, a hydroponic frame was welded with triangle iron to build a hydroponic facility. A total of 4 layers were welded, the height of each layer was 40cm, and the depth of the tray was 15cm. The depth of the hydroponic nutrient solution is 15cm, and then use the sunshade net to cover (not cover the plants). The sunshade net uses a sunshade net with a density of 3 needles, which is threaded and pulled with a thin thread, so that a hole of about 0.5-1 cm is exposed. for transplanting seedlings. The bottom iron frame is large, and the upper iron frame bracket is welded to the inner side of the lower iron frame to ensure that the upper tray area is 60cm×25cm, the lower layer is 65cm×30cm, 70cm×35cm, 75cm×40cm, and the bottom is 20cm deep, 85cm×50cm No seedlings are placed in the culture tray, and it is responsible for receiving water. At the same time, the circulation pump is used to pump the water in the lower water tra...

Embodiment 2

[0029] 1. In a small pig farm in Guyushu Town, Changtu County, a hydroponic frame was welded with triangle iron to build a hydroponic facility. A total of 4 layers were welded, each layer was 40cm high, and the depth of the tray was 15cm. The depth of the hydroponic nutrient solution is 15cm, and then use the sunshade net to cover (not cover the plants). The sunshade net uses a sunshade net with a density of 3 needles, which is threaded and pulled with a thin thread, so that a hole of about 0.5-1 cm is exposed. for transplanting seedlings. The bottom iron frame is large, and the upper iron frame bracket is welded to the inner side of the lower iron frame to ensure that the upper tray area is 60cm×25cm, the lower layer is 65cm×30cm, 70cm×35cm, 75cm×40cm, and the bottom is 20cm deep, 85cm×50cm No seedlings are placed in the culture tray, and it is responsible for receiving water. At the same time, the circulation pump is used to pump the water in the lower water tray to the top ...

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Abstract

The invention discloses a method for degrading sulfonamide antibiotics in decomposed livestock and poultry manure by using plant root exudates. The method comprises the following steps that a hydroponic facility is established, and the hydroponic facility is designed into four layers; a ratio of a hydroponic nutrient solution to a decomposed excrement leachate is 10 to 1, and the leachate is sterilized and diluted; hydroponic plants are selected, and low-temperature plants and high-temperature plants are correspondingly selected; the plant spacing of the hydroponic plants is 15-25 cm, the culture solution is changed once every 6 days for the hydroponic plants, and a sunshade net is used for shading at high temperature; an antibiotic degradation platform is designed into four layers, each layer is a tray with the depth of 15-20 cm, the area of the tray is 60 cm*35 cm, and the tray with the bottom layer being 70 cm*35 cm is used for receiving seepage; the same side of the tray is lifted by 1cm, and the other side of the tray is provided with holes for drainage of cloth strips; a water pipe with holes is designed for supplying water; during decomposition, the plant water culture solution is added once every 6 days, and the total degradation time is 30 days; and the degradation rate is measured, and the degradation rate of the sulfonamide antibiotics with the total content of 0.5-1 mg / kg is 60%-80%.

Description

technical field [0001] The invention belongs to the field of organic pollutant degradation, and in particular relates to a method for promoting the degradation of sulfonamide antibiotics in decomposed livestock and poultry feces by using plant root exudates. Background technique [0002] Sulfonamide antibiotics are a class of artificially synthesized antibacterial drugs with a wide antibacterial spectrum. They have certain lethality against Gram-negative bacteria and Gram-positive bacteria, mainly inhibiting the activity of microorganisms. It has the advantages of stable properties, easy use, and no food consumption during production, so it is widely used in feed additives in livestock and poultry breeding. Fresh livestock and poultry manure contains a large amount of undegraded sulfonamide antibiotics, which will be significantly reduced after short-term storage, but there are still some residues. When used as an organic fertilizer in farmland, it will cause soil antibioti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G31/06A01G31/00
CPCA01G31/06A01G31/00Y02P60/21
Inventor 侯永侠丁睿尧车畅王琳江宇魏建兵宋雪英李玉双陈红亮
Owner SHENYANG UNIV