A method for treating medical waste liquid by using electron beam irradiation technology

A technical treatment, electron beam radiation technology, which is applied in the field of medical waste liquid treatment, can solve the problems of mutual interference of active particles and achieve the effects of improved electron beam irradiation technology, easy to obtain reagents, and simple treatment methods

Active Publication Date: 2022-01-28
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is mutual interference between the active particles produced by electron beam irradiation, and it is difficult for pure hydroxide radicals to completely oxidize and decompose some pharmaceutical organic pollutants.

Method used

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  • A method for treating medical waste liquid by using electron beam irradiation technology
  • A method for treating medical waste liquid by using electron beam irradiation technology
  • A method for treating medical waste liquid by using electron beam irradiation technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Effect of Sodium Peroxodisulfate and Medical Wastewater Solid-Liquid Ratio on COD Removal Efficiency of Electron Beam Irradiation Treatment of Medical Wastewater

[0019] Treatment of medical wastewater by electron beam irradiation: see the treatment process figure 1 According to the solid-liquid ratio of sodium persulfate and medical wastewater 0.005:1mg / mL, 0.006:1mg / mL, 0.008:1mg / mL, 0.01:1mg / mL, 0.03:1mg / mL, 0.05:1mg / mL, 0.055: 1mg / mL, 0.06:1mg / mL, 0.07:1mg / mL respectively weigh sodium persulfate and pharmaceutical wastewater. Weigh sodium sulfite according to the solid-to-liquid ratio of sodium sulfite to pharmaceutical wastewater 0.02:1mg / mL. Pump the medical waste liquid from the waste liquid inlet into the electron beam disposal tank ( figure 2 ), then add sodium peroxodisulfate through the dosing port, start the stirring tank, stir under 20rpm speed conditions, and start the electron beam accelerator after the sodium peroxodisulfate is completely dissolved. ...

Embodiment 2

[0026] Effect of sodium sulfite and medical wastewater solid-liquid ratio on the COD removal rate of electron beam irradiation treatment of medical wastewater

[0027]Electron beam irradiation treatment of medical wastewater: Weigh sodium peroxodisulfate and medical wastewater according to the solid-to-liquid ratio of sodium peroxodisulfate and medical wastewater 0.05:1 mg / mL, respectively. According to the solid-to-liquid ratio of sodium sulfite and pharmaceutical wastewater 0.01:1mg / mL, 0.015:1mg / mL, 0.018:1mg / mL, 0.02:1mg / mL, 0.04:1mg / mL, 0.06:1mg / mL, 0.065:1mg / mL, 0.07:1mg / mL, 0.08:1mg / mL were weighed sodium sulfite. Pump the medical waste liquid into the electron beam disposal tank, then add sodium peroxodisulfate through the injection port, start the stirring tank, stir at a speed of 35rpm, and start the electron beam accelerator after the sodium peroxodisulfate is completely dissolved. After the irradiation dose reaches 30kGy, open the microporous aeration pan, aerate ...

Embodiment 3

[0033] Effect of carbon dioxide gas exposure time on the COD removal rate of electron beam irradiation treatment of medical waste liquid

[0034] Electron beam irradiation treatment of medical wastewater: Weigh sodium peroxodisulfate and medical wastewater according to the solid-to-liquid ratio of sodium peroxodisulfate and medical wastewater 0.05:1 mg / mL, respectively. Weigh sodium sulfite according to the solid-to-liquid ratio of sodium sulfite to pharmaceutical wastewater 0.06:1mg / mL. Pump the medical waste liquid into the electron beam disposal tank, then add sodium peroxodisulfate through the injection port, start the stirring tank, stir at a speed of 50rpm, and start the electron beam accelerator after the sodium peroxodisulfate is completely dissolved. After the irradiation dose reaches 50kGy, open the microporous aeration disc, aerate carbon dioxide for 2.5 minutes, 3.5 minutes, 4.5 minutes, 5 minutes, 7.5 minutes, 10 minutes, 10.5 minutes, 11.5 minutes, 12.5 minutes a...

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Abstract

The invention discloses a method for treating medical waste liquid by electron beam radiation technology, which comprises the following steps: introducing the medical waste liquid into an electron beam disposal tank, adding sodium peroxodisulfate into the disposal tank, stirring until the sodium peroxodisulfate is completely Dissolve, start the electron beam accelerator to irradiate the medical wastewater, and at the same time expose carbon dioxide to the disposal tank; stop the exposure to carbon dioxide and irradiation treatment, then add sodium sulfite to the disposal tank, stir until the sodium sulfite is completely dissolved, and start the electron beam again The accelerator irradiates medical wastewater, stops stirring and irradiating treatment, and completes an electron beam irradiation oxidation-reduction alternate strengthening treatment. On the basis of the traditional electron beam irradiation wastewater treatment process, the present invention adds sodium peroxodisulfate and sodium sulfite respectively, adds stirring tank and carbon dioxide aeration, alternately strengthens the oxidation and reduction in the electron beam irradiation stage, and realizes the treatment of medical waste. Higher COD removal rate; simple treatment method.

Description

technical field [0001] The invention relates to a treatment method for medical waste liquid, in particular to a method for treating medical waste liquid by electron beam irradiation technology. Background technique [0002] Medical waste liquid mainly comes from the wastewater produced by the pharmaceutical and medical industries, which contains a large amount of toxic, harmful and refractory organic substances, which can easily cause irreversible harm to the ecological environment. At present, medical waste liquid treatment technologies mainly include flocculation, chemical oxidation, catalytic oxidation, microbial disposal technology, supercritical water oxidation, etc. However, these techniques have their own technical limitations. Among them, the flocculation method needs to consume a large amount of flocculant, and at the same time, it needs to be equipped with air flotation or sedimentation technology to realize solid-liquid separation, and additional space should be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/30C02F1/72C02F1/70
CPCC02F1/305C02F1/72C02F1/70C02F2209/08
Inventor 黄涛刘万辉张树文刘龙飞宋东平陶骏骏周璐璐徐娇娇
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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