Application of ultraviolet/peroxyacetic acid in removal of degradation-resistant antibiotics in village and town sewage

An antibiotic and refractory technology, applied in the field of water treatment, can solve the problems of less research on advanced oxidation and achieve good degradation effect, environmental friendliness and simple operation

Pending Publication Date: 2020-12-29
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the research on peracetic acid focuses on its disinfection efficacy, and there are few researches on its advanced oxidation.

Method used

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  • Application of ultraviolet/peroxyacetic acid in removal of degradation-resistant antibiotics in village and town sewage
  • Application of ultraviolet/peroxyacetic acid in removal of degradation-resistant antibiotics in village and town sewage
  • Application of ultraviolet/peroxyacetic acid in removal of degradation-resistant antibiotics in village and town sewage

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A method for removing the refractory antibiotic oxytetracycline in village and town sewage by ultraviolet / peracetic acid, comprising the following steps:

[0029] (1) Turn on the 254nm low-pressure mercury lamp for 30 minutes to ensure a stable output of ultraviolet radiation.

[0030] (2) 40mL of oxytetracycline solution with an initial concentration of 5mg / L is placed in a quartz tube at 7 with a phosphate buffer solution to control the pH of the solution, and then a certain amount of peracetic acid is added immediately to make its concentration 5mg / L. The tube was placed in a photoreactor, magnetic stirring was turned on, and the mixed solution was irradiated with UV.

[0031] (3) The photocatalytic reaction was carried out for 60 minutes to complete the treatment of oxytetracycline in the wastewater. The sampling time for judging the progress of photocatalytic reaction was set at 0, 3, 5, 10, 20, 30, 45, and 60 min, and sodium thiosulfate was used as the reaction t...

Embodiment 2

[0035] A method for removing the refractory antibiotic oxytetracycline in village and town sewage by ultraviolet / peracetic acid, comprising the following steps:

[0036] (1) Turn on the 254nm low-pressure mercury lamp for 30 minutes to ensure a stable output of ultraviolet radiation.

[0037] (2) 40mL of oxytetracycline solution with an initial concentration of 5mg / L is placed in a quartz tube at 7 with a phosphate buffer solution to control the pH of the solution, and then a certain amount of peracetic acid is added immediately to make its concentration 5mg / L. The tube was placed in a photoreactor, magnetic stirring was turned on, and the mixed solution was irradiated with UV.

[0038] (3) The photocatalytic reaction was carried out for 60 minutes to complete the treatment of oxytetracycline in the wastewater. The sampling time for judging the progress of photocatalytic reaction was set at 0, 3, 5, 10, 20, 30, 45, and 60 min, and sodium thiosulfate was used as the reaction t...

Embodiment 3

[0042] A method for removing the refractory antibiotic oxytetracycline in village and town sewage by ultraviolet / peracetic acid, comprising the following steps:

[0043] (1) Turn on the 254nm low-pressure mercury lamp for 30 minutes to ensure a stable output of ultraviolet radiation.

[0044] (2) 40mL of oxytetracycline solution with an initial concentration of 5mg / L is placed in a quartz tube at 7 with a phosphate buffer solution to control the pH of the solution, and then a certain amount of peracetic acid is added immediately to make its concentration 5mg / L. The tube was placed in a photoreactor, magnetic stirring was turned on, and the mixed solution was irradiated with UV.

[0045] (3) The photocatalytic reaction was carried out for 60 minutes to complete the treatment of oxytetracycline in the wastewater. The sampling time for judging the progress of photocatalytic reaction was set at 0, 3, 5, 10, 20, 30, 45, and 60 min, and sodium thiosulfate was used as the reaction ter...

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Abstract

The invention discloses a method for removing degradation-resistant antibiotics in village and town sewage by using ultraviolet / peroxyacetic acid (UV / PAA), which comprises the following steps: addingan oxidant peroxyacetic acid into antibiotic-containing water, irradiating the mixed solution by using ultraviolet light, activating peroxyacetic acid by using ultraviolet light to generate strong oxidizing free radicals, and in combination with the action of ultraviolet direct photolysis and peroxyacetic acid oxidation, synergistically degrading the degradation-resistant antibiotics in the sewage. According to the photocatalytic advanced oxidation technology based on UV irradiation, strong oxidizing free radicals are generated through ultraviolet light activation to oxidize and remove antibiotics, and the method has the advantages of being high in treatment efficiency, little in secondary pollution, easy and convenient to operate, low in cost and the like.

Description

technical field [0001] The invention belongs to the field of water treatment technology and application, and relates to a method for removing refractory antibiotics in sewage. Background technique [0002] In recent years, many types of antibiotics have been frequently detected in environmental water bodies, and their possible toxicological effects on ecosystems and humans have aroused widespread public concern. From the perspective of typical antibiotic usage, tetracycline veterinary antibiotics represented by oxytetracycline (OTC) have been added to animal feed at low dose concentrations for a long time to promote the growth of livestock, poultry and fish while maintaining animal health. Healthy, and the amount of antibiotics used in animals is much higher than that used by humans. At the same time, studies have shown that only a small amount of veterinary antibiotics used is absorbed and utilized by animals, and most of them will still enter the sewage treatment plant or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/32C02F101/38
CPCC02F1/32C02F1/722C02F2101/38C02F2305/023
Inventor 王林严婷婷李咏梅台雪卜韩萌宋杨子
Owner TONGJI UNIV
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