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Method for treating medical waste liquid by utilizing electron beam irradiation technology

A technical treatment, electron beam radiation technology, applied in the field of medical waste liquid treatment, can solve the problems of mutual interference of active particles, achieve the effect of improved electron beam irradiation technology, simple treatment method, and easy access to reagents

Active Publication Date: 2019-10-25
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • 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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  • Method for treating medical waste liquid by utilizing electron beam irradiation technology
  • Method for treating medical waste liquid by utilizing electron beam irradiation technology
  • Method for treating medical waste liquid by utilizing 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 a medical waste liquid by utilizing an electron beam irradiation technology. The method comprises the following steps: introducing the medical waste liquid into an electron beam treatment groove, adding sodium persulfate into the treatment groove, carrying out stirring until the sodium persulfate is completely dissolved, starting an electron beam accelerator for irradiation treatment of medical wastewater, and aerating carbon dioxide into the treatment groove at the same time; stopping carbon dioxide aeration and irradiation treatment, then addingsodium sulfite into the treatment groove, carrying out stirring until the sodium sulfite is completely dissolved, starting the electron beam accelerator again for irradiation treatment of the medicalwastewater, and stopping stirring and irradiation treatment so as to complete one-time electron beam irradiation oxidation-reduction alternate reinforcement treatment. According to the invention, on the basis of a traditional electron beam irradiation wastewater treatment process, through addition of the sodium persulfate and the sodium sulfite, additional arrangement of a stirring kettle, aeration of the carbon dioxide and alternate reinforcement of oxidation effect and reduction effect in an electron beam irradiation stage, high COD removal rate of the medical waste liquid is realized; and the treatment method is simple.

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 Applications(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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