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Method and reactor for million kilowatt nuclear power station to process radioactive wastewater

A technology for radioactive wastewater and nuclear power plants, applied in radioactive purification, nuclear engineering, etc., can solve problems such as increased water head loss and failure of fixed bed adsorption reactors to achieve the effects of reducing reaction time, shortening settlement distance, and improving separation effect

Active Publication Date: 2015-12-16
LINGDONG NUCLEAR POWER +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] If the particle size of the adsorbent is reduced, although the adsorption effect will be improved, the gap between the adsorbent will also be reduced accordingly, and the head loss of the radioactive wastewater flowing through the fixed bed will increase, and the increase of the head loss to a certain extent will make the fixed bed adsorption reactor unable to work properly

Method used

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  • Method and reactor for million kilowatt nuclear power station to process radioactive wastewater
  • Method and reactor for million kilowatt nuclear power station to process radioactive wastewater
  • Method and reactor for million kilowatt nuclear power station to process radioactive wastewater

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Embodiment 1

[0066] The reactor 3 used in this embodiment to treat radioactive waste water in a million-kilowatt nuclear power plant is as follows: figure 2 As shown, the lower part of the reactor 3 has a water inlet 31 for radioactive waste water (raw water), and the upper part has a water outlet 32 ​​for treated waste water. An adsorption reaction zone 4 is arranged in the inner cavity of the reactor 3, and the adsorption reaction zone 4 is placed There are granular adsorbents, and the specific gravity of the adsorbent is greater than that of the wastewater.

[0067] The reactor 3 in this embodiment is used to treat radioactive waste water. The method is: the radioactive waste water is input into the reactor 3 from the water inlet 31 and discharged from the water outlet 32. During this period, the adsorbent is suspended and dispersed in the adsorption reaction by stirring with the mechanical stirrer 100. In the radioactive wastewater in zone 4, the mechanical agitator 100 is specificall...

Embodiment 2

[0069] The reactor 3 used in this embodiment to treat radioactive waste water in a million-kilowatt nuclear power plant is as follows: image 3 As shown, the bottom of the reactor 3 inner cavity is an adsorption reaction zone 4, and the upper part of the reactor 3 inner cavity is a separation zone 5; the adsorption reaction zone 4 is provided with a water inlet 31 and a stirring device for radioactive waste water, and the stirring device is used in this implementation In an example, it is specifically a mechanical stirrer 100, such as a paddle stirrer. A granular adsorbent is placed in the adsorption reaction zone 4, and the specific gravity of the adsorbent is greater than that of the waste water. The mechanical agitator 100 suspends and disperses the adsorbent particles whose specific gravity is greater than that of the wastewater in the radioactive wastewater.

[0070] An intercepting device for retaining the adsorbent in the reactor 3 is provided in the separation zone 5 ...

Embodiment 3

[0073] The reactor 3 used in this embodiment to treat radioactive waste water in a million-kilowatt nuclear power plant is as follows: Figure 4 As shown, the bottom of the reactor 3 inner cavity is an adsorption reaction zone 4, and the upper part of the reactor 3 inner cavity is a separation zone 5; the adsorption reaction zone 4 is provided with a water inlet 31 and a stirring device for radioactive waste water, and the stirring device is used in this implementation In an example, it is specifically a mechanical stirrer 100, such as a paddle stirrer. A granular adsorbent is placed in the adsorption reaction zone 4, and the specific gravity of the adsorbent is greater than that of the waste water. The mechanical agitator 100 suspends and disperses the adsorbent particles whose specific gravity is greater than that of the wastewater in the radioactive wastewater.

[0074] An intercepting device for retaining the adsorbent in the reactor 3 is provided in the separation zone 5...

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Abstract

The invention discloses a method and reactor for a million kilowatt nuclear power station to process radioactive wastewater. According to the method, adsorbents with the specific gravity larger than that of the radioactive wastewater is scattered in the radioactive wastewater through stirring, and the adsorbents are used for nuclide ions in the radioactive wastewater. The lower portion of an inner cavity of the reactor is an adsorbing reaction area, and a separating area is arranged on the upper portion of the inner cavity of the reactor. A radioactive wastewater inlet and a stirring device are arranged in the adsorbing reaction area. An intercepting device for keeping the adsorbents stay in the reactor is arranged in the separating area. A water outlet for processed wastewater is formed in the upper portion of the intercepting device. According to the reactor, existing adsorption of a fixed bed is changed into adsorption of a flowing bed, powder or small particle adsorbents can be selected so that the specific surface area can be increased, the adsorbents and the radioactive wastewater can make full contact by stirring the powder or the small particle adsorbents in the radioactive wastewater, and a large amount of radioactive wastewater can be fast preprocessed.

Description

technical field [0001] The invention relates to the field of radioactive waste water treatment, in particular to a method and a reactor for treating radioactive waste water in a mega-kilowatt nuclear power plant. Background technique [0002] At present, the adsorption reactor used in the field of radioactive wastewater treatment is generally a fixed-bed adsorption reactor. The structure of this reactor is as follows: figure 1 As shown, a cavity 1' is included, and the cavity 1' is filled with an adsorbent 2' of large particles. When working, the radioactive waste water flows in the direction indicated by the arrow in the figure, that is, it enters the chamber 1' from the upper end of the reactor, and then flows downward from the gap of the adsorbent 2'. During the flow process, the adsorbent 2' interacts with the nuclei in the water. The element ion reacts, absorbs it, and the treated water is discharged from the lower end of the reactor. [0003] The particle size of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/12
Inventor 赵璇李福志尉继英戴忠华黄卫刚赵滢
Owner LINGDONG NUCLEAR POWER
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