A method for removing tetracycline antibiotics and heavy metal ions in livestock and poultry breeding wastewater

A technology for livestock and poultry breeding wastewater and heavy metal ions, applied in chemical instruments and methods, animal husbandry wastewater treatment, water pollutants, etc., can solve the problems of human life and ecological environment hazards, heavy metal and antibiotic complex pollution treatment, etc. Achieve the effects of promoting promotion and application, improving the efficiency of free radical formation, and obvious removal effect

Active Publication Date: 2022-04-26
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] It is very difficult to treat the combined pollution of heavy metals and antibiotics in livestock and poultry breeding wastewater. Traditional wastewater treatment technology is difficult to efficiently treat these two pollutants at the same time, which will eventually lead to aggravated harm of pollutants to human life and the ecological environment. Therefore, the combined pollution effect of antibiotics and heavy metals It has attracted widespread attention and attention. Exploring a new efficient and economical treatment technology to remove heavy metal and antibiotic pollution in water has become a research hotspot in the field of livestock and poultry wastewater treatment.

Method used

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  • A method for removing tetracycline antibiotics and heavy metal ions in livestock and poultry breeding wastewater

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Experimental program
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Effect test

Embodiment 1

[0030] Xiang Ru figure 1 In the shown anaerobic sequencing batch reactor (ASBR), 10L of livestock and poultry wastewater (tetracycline concentration is 1mg / L; Zn 2+ The concentration is 5mg / L), and then immediately add 5g of sodium peroxodisulfate and peracetic acid, and the advanced oxidation reaction stage is 8h. After the temperature is equal to the temperature of the water bath (ie: 35°C), pump the sulfate-reducing bacteria culture solution that has been sterilized by high temperature and high pressure into the anaerobic sequencing batch reactor (ASBR), adjust the pH of the solution to 7.5, and pass in nitrogen After 15 minutes, sulfate-reducing bacteria were inoculated into the ASBR solution, and the dissimilation and reduction stage of sulfate-reducing bacteria was maintained for 10 days.

[0031] The nutrients required for the culture of sulfate-reducing bacteria include: magnesium chloride (MgCl 2 ) 2.0g, sodium citrate 5.0g, calcium sulfate (CaSO 4 2H 2 O) 1.0g, a...

Embodiment 2

[0034] Pump 10L of high temperature and high pressure sterilized livestock and poultry wastewater into the anaerobic sequencing batch reactor (ASBR) (the concentration of oxytetracycline is 1mg / L; the concentration of Fe(II) is 5mg / L), and then immediately add Each 5g of sodium peroxodisulfate and peracetic acid, the advanced oxidation reaction stage is 8h. After the temperature is equal to the temperature of the water bath (ie: 30°C), pump the sulfate-reducing bacteria culture solution that has been sterilized by high temperature and high pressure into the anaerobic sequencing batch reactor (ASBR), adjust the pH of the solution to 7.2, and pass in nitrogen After 20 minutes, sulfate-reducing bacteria were inoculated into the ASBR solution, and the dissimilation and reduction stage of sulfate-reducing bacteria was maintained for 12 days. The nutrients required for the culture of sulfate-reducing bacteria include: magnesium chloride (MgCl 2 ) 2.0g, sodium citrate 5.0g, calcium ...

Embodiment 3

[0037] Pump 10L of livestock and poultry wastewater that has been sterilized by high temperature and high pressure into the anaerobic sequencing batch reactor (ASBR) (the concentration of aureomycin is 1mg / L; the concentration of Pb(II) is 5mg / L), and then immediately add Each 5g of sodium peroxodisulfate and peracetic acid, the advanced oxidation reaction stage is 8h. After the temperature is equal to the temperature of the water bath (ie: 35°C), pump the sulfate-reducing bacteria culture solution that has been sterilized by high temperature and high pressure into the anaerobic sequencing batch reactor (ASBR), adjust the pH of the solution to 7.5, and pass in nitrogen After 10 minutes, sulfate-reducing bacteria were inoculated into the ASBR solution, and the dissimilation and reduction stage of sulfate-reducing bacteria was maintained for 15 days.

[0038] The nutrients required for the culture of sulfate-reducing bacteria include: magnesium chloride (MgCl 2 ) 2.0g, sodium c...

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Abstract

The invention provides a method for removing tetracycline antibiotics and heavy metal ions in livestock and poultry breeding wastewater, comprising the following steps: the livestock and poultry breeding wastewater is sterilized by high temperature and high pressure and then pumped into a constant temperature ASBR, and then peroxodisulfate and peroxygen are added. Acetic acid: After the advanced oxidation reaction stage, pump the culture solution of sulfate-reducing bacteria sterilized by high temperature and high pressure into the ASBR, and inoculate the sulfate-reducing bacteria strains after nitrogen protection, and use advanced oxidation technology combined with sulfate-reducing bacteria dissimilation and reduction Co-removal of tetracycline antibiotics and heavy metal ions in wastewater. Using the method provided by the invention, the removal rates of tetracycline and heavy metals in wastewater can reach about 100% and 100% respectively. The method has the advantages of efficient removal of pollutants, convenient operation, green and no secondary pollution, and no need for additional carbon sources.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and specifically relates to a method for synchronously removing sulfate from livestock and poultry breeding based on peroxodisulfate (PDS) and peracetic acid (PAA) advanced oxidation technology combined with sulfate-reducing bacteria (SRB) dissimilation. Technical methods for tetracycline (TC) antibiotics and heavy metal ions such as Zn (II) in wastewater. Background technique [0002] Antibiotics have long played an important role in treating bacterial infections, preventing the spread of disease and minimizing serious complications of infection. Among them, tetracycline antibiotic molecular formula C 22 h 24 N 2 o 8 , with a molecular weight of 444.45, is a broad-spectrum antibiotic that has positive effects in the treatment of infectious diseases of livestock and poultry, protozoa and internal and surgical diseases. In addition, Zn 2+ It is often added to animal feed for livesto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/72C02F3/28C02F3/34C02F101/20C02F101/38C02F103/20
CPCC02F9/00C02F2101/20C02F2101/38C02F2103/20C02F1/722C02F2305/023C02F3/34C02F3/282C02F2101/203
Inventor 张亚雷周雪飞尹文俊陈家斌徐悦
Owner TONGJI UNIV
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