Decontamination system and decontamination method

A decontamination system and cathode technology, applied in electrolysis components, electrolysis process, etc., can solve the problem of more secondary waste liquid, etc., and achieve the effect of less secondary waste liquid

Active Publication Date: 2020-10-16
CHINA GENERAL NUCLEAR POWER OPERATION +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Or, use chemical decontamination solution to repeatedly wipe and rinse to decontaminate, but this method will generate more secondary waste liquid

Method used

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  • Decontamination system and decontamination method
  • Decontamination system and decontamination method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] The decontamination system of this embodiment is used to decontaminate the inner wall of the stainless steel storage tank. The LB124 surface pollution measuring instrument was used to measure the initial pollution level, and the pollution was mainly β pollution. The decontamination process is as follows:

[0080] (1) Place the liquid absorbing part in the casing to obtain the liquid absorbing assembly. The liquid-absorbing part is in contact with the cathode and the area 1 of the inner wall of the stainless steel storage tank, and the liquid-absorbing component is evacuated through a vacuum device, so that the liquid-absorbing part is in close contact with the cathode and the inner wall of the stainless steel storage tank. Wherein, the material of the liquid absorbing part is polyurethane foam. The cathode adopts a disc-shaped cerium tungsten electrode, and the cathode area is 50cm 2 , the distance between the cathode and the inner wall of the stainless steel storage...

Embodiment 2

[0087] The decontamination system of this embodiment is used to decontaminate the outer wall of a heavily polluted stainless steel liquid storage tank. The LB124 surface pollution measuring instrument was used to measure the initial pollution level, and the pollution was mainly β pollution. The decontamination process is as follows:

[0088] (1) Place the liquid absorbing part in the casing to obtain the liquid absorbing assembly. The liquid-absorbing part is in contact with the cathode and the area 1 of the outer wall of the stainless steel storage tank, and the liquid-absorbing component is evacuated through a vacuum device, so that the liquid-absorbing part is in close contact with the cathode and the outer wall of the stainless steel storage tank. Wherein, the material of the liquid absorbing part is wood cellulose. The cathode adopts a mesh titanium iridium-plated electrode, and the cathode area is 50cm 2 , the distance between the cathode and the outer wall of the sta...

Embodiment 3

[0095] The decontamination system of this embodiment is used to decontaminate a heavily polluted stainless steel cover plate. The LB124 surface pollution measuring instrument was used to measure the initial pollution level, and the pollution was mainly β pollution. The decontamination process is as follows:

[0096] (1) Place the liquid absorbing part in the casing to obtain the liquid absorbing assembly. The liquid-absorbing part is in contact with the cathode and the area 1 of the stainless steel cover plate of the workpiece to be decontaminated, and the liquid-absorbing component is evacuated through a vacuum device, so that the liquid-absorbing part is in close contact with the cathode and the inner surface of the workpiece to be decontaminated. Wherein, the material of the liquid absorbing part is polyacrylate. The cathode adopts a mesh-shaped silver-tungsten electrode, and the cathode area is 200cm 2 , The distance between the cathode and the stainless steel cover pla...

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Abstract

The invention relates to a decontamination system and a decontamination method. The decontamination system comprises a reaction device and a power supply device, wherein the reaction device comprisesa cathode and a liquid absorption assembly; the liquid absorption assembly comprises a liquid absorption part used for absorbing an electrolyte; the liquid absorption part can be in contact with the cathode and a to-be-decontaminated workpiece, so that the liquid absorption part can provide the electrolyte for the cathode and the to-be-decontaminated workpiece; the power supply device is providedwith a positive electrode and a negative electrode; the positive electrode can be electrically connected with the to-be-decontaminated workpiece; and the negative electrode can be electrically connected with the cathode. According to the decontamination system, site decontamination can be achieved on the to-be-decontaminated workpiece, and less secondary effluent is generated.

Description

technical field [0001] The invention relates to the field of decontamination of nuclear facilities, in particular to a decontamination system and a decontamination method. Background technique [0002] The common method for decontamination of metal parts or shallow contamination hotspots of structures in nuclear facilities is to disassemble the parts and send them to the decontamination workshop for treatment by traditional decontamination methods such as traditional hot acid and hot alkali. Or, use chemical decontamination solution to repeatedly wipe and rinse to decontaminate, but this method will generate more secondary waste liquid. Contents of the invention [0003] Based on this, it is necessary to provide a decontamination system capable of on-site decontamination with less secondary waste liquid. [0004] In addition, a decontamination method is also provided. [0005] A decontamination system comprising: [0006] The reaction device includes a cathode and a liq...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25F1/00C25F7/00
Inventor 姜磊王浩宇洪振旻赵滢张惠炜何小平秦体照张伟郭丽潇武明亮张文俊梁栋邓少刚刘东王永仙
Owner CHINA GENERAL NUCLEAR POWER OPERATION
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