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Device and method for treating wastewater containing fluoroquinolone antibiotics

A technology of quinolones and antibiotics, applied in the field of waste water devices, can solve problems such as poor removal effect, low light utilization rate, and complicated treatment process, so as to improve biodegradability, reduce inhibition, and increase economic benefits Effect

Pending Publication Date: 2019-05-31
CHINA PHARM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, microfiltration can only remove particulate pollutants, and the removal effect of dissolved organic pollutants such as fluoroquinolone antibiotics is not good. At the same time, the combination of membrane and other technologies will lead to complex treatment process and high energy consumption.
[0006] In addition, photocatalysis is also an effective means of treating fluoroquinolone antibiotic wastewater, but due to the high cost of the catalyst and the need for a large amount of chemical reagents, the catalyst is not easy to separate and the utilization rate of light is too low, and the loading material and wear of the catalyst are still to be solved. solve
There are also chemical oxidation methods, such as the Fenton method, to reduce the concentration of antibiotics, but the cost of the agent is too high and the requirements are harsh, so it is difficult to promote it on a large scale for the treatment of pharmaceutical wastewater

Method used

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  • Device and method for treating wastewater containing fluoroquinolone antibiotics

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 As shown, a device for treating wastewater containing fluoroquinolone antibiotics, including DC stabilized power supply 1, cathode 2, anode 3, electrolytic cell 4, domestic sewage collection tank 5, upflow sulfate reduction anaerobic sludge bed reaction device 6 and biological contact oxidation tank 7, the anode 3 is connected to the positive pole of the DC stabilized power supply 1, the cathode 2 is connected to the negative pole of the DC stabilized power supply 1, and the lower ends of the anode and the cathode are immersed in the waste water to be treated in the electrolytic cell 4, The bottom of the electrolytic cell 4 is provided with a magnetic stirrer 8; the electrolytic cell 4 communicates with the bottom water inlet of the upflow sulfate reduction anaerobic sludge bed reactor 6 through pipelines and peristaltic pumps, and the upflow sulfate reduction The upper part of the anaerobic sludge bed reactor 6 is provided with an internal circulation ...

Embodiment 2

[0036] The water quality of the wastewater containing fluoroquinolone antibiotics to be treated: antibiotic 5mg / L, sulfate 0.04mol / L, TOC 3000mg / L.

[0037] Utilize the device of embodiment 1 to process the method for the waste water containing above-mentioned fluoroquinolone antibiotics, comprise the steps:

[0038] (1) Pour the waste water containing fluoroquinolone antibiotics into the electrolytic cell, turn on the magnetic stirrer, start the DC stabilized voltage power supply simultaneously, and be electrolyzed for 4h under the condition of pH 7.6-7.8 (the electrolytic current density is 300A / m 2 , the rotating speed of the magnetic stirrer is 500 ± 50r / min), and the wastewater after electrolytic treatment is obtained;

[0039] (2) Open the valve, pump the electrolytically treated wastewater and domestic sewage (TOC 900mg / L) into the upflow sulfate reduction anaerobic sludge bed reactor for anaerobic reaction, and feed hot water from the hot water inlet Maintain the reac...

Embodiment 3

[0043] The water quality of the wastewater containing fluoroquinolone antibiotics to be treated: antibiotics 100mg / L, sodium sulfate 0.04mol / L, TOC 120mg / L.

[0044] Utilize the device of embodiment 1 to process the wastewater containing fluoroquinolone antibiotics, the method may further comprise the steps:

[0045] (1) Pour the waste water containing fluoroquinolone antibiotics into the electrolytic cell, turn on the magnetic stirrer, start the DC stabilized voltage power supply simultaneously, and be electrolyzed for 4h under the condition of pH 7.6-7.8 (the electrolytic current density is 300A / m 2 , the rotating speed of the magnetic stirrer is 500 ± 50r / min), and the wastewater after electrolytic treatment is obtained;

[0046] (2) Open the valve, pump the electrolytically treated wastewater and domestic sewage (TOC 950mg / L) into the upflow sulfate reduction anaerobic sludge bed reactor for anaerobic reaction, and feed hot water from the hot water inlet Maintain the reac...

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Abstract

The invention relates to a device and method for treating wastewater containing fluoroquinolone antibiotics, wherein the device comprises a direct current regulated power supply, a cathode, an anode,an electrolytic cell, a domestic sewage collection tank, an upflow sulfate reduction anaerobic sludge bed reactor and a biological contact oxidation tank, the method comprises the following steps of:firstly, pouring wastewater containing fluoroquinolone antibiotics into the electrolytic cell for electrolytic treatment; secondly, pumping the treated wastewater and domestic sewage into the upflow sulfate reduction anaerobic sludge bed reactor for anaerobic treatment; and finally, pumping the anaerobic treated wastewater into the biological contact oxidation tank for biological oxidation treatment.The device is simple to construct, the process is reasonable and the operation is easy; high-concentration pharmaceutical wastewater can be treated to reduce antibiotic residues in sludge; the treatment time can be shortened; the energy consumption can be reduced; the removal rate of the whole system is up to 99.80%; the TOC and COD of effluent are below 20 and 30 mg / L; the effluent has good quality and no odor.

Description

technical field [0001] The invention relates to a device and method for treating wastewater containing fluoroquinolone antibiotics, belonging to the technical field of sewage treatment. Background technique [0002] Fluoroquinolone antibiotics (FQs) are a class of synthetic broad-spectrum antibacterial drugs, which are widely used in the treatment of human and animal diseases and as animal growth promoters. Currently, the third-generation products are widely used, such as Norfloxacin, Pefloxacin, Ofloxacin, Ciprofloxacin, and Lomefloxacin. Wait. The main sources of FQs in the environment are human or animal drug (hospital) residues and pharmaceutical wastewater discharge. Miao et al. tested the effluent of 8 sewage treatment plants in 5 Canadian cities, and frequently detected ofloxacin and ciprofloxacin. Eight quinolone antibiotics were detected in the influent and effluent of Beijing Gaobeidian Sewage Treatment Plant, namely pipemidic acid, fleroxacin, ofloxacin, norflo...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/10C02F103/34
Inventor 廖千家骅高金龙李纪薇汪鋆陈轶凡于雅琳商景阁齐宇婷庞恬恬罗云鹤
Owner CHINA PHARM UNIV
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