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Method and system for treatment of radioactive waste liquid from nuclear power plants

A waste liquid treatment system and radioactive waste liquid technology, applied in radioactive purification, nuclear engineering and other directions, can solve the problems of no secondary waste treatment, no consideration of radioactive waste liquid reuse, and less consideration of radioactive waste liquid reuse. , to achieve the effect of reducing the amount of secondary waste, reducing the amount of solid waste, and improving the level of minimization

Active Publication Date: 2019-03-26
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the existing radioactive waste treatment system rarely considers the reuse of radioactive waste, and does not involve the treatment of secondary waste generated after the treatment of radioactive waste
For example, the technical solution disclosed in the Chinese patent application "Nuclear Power Plant Radioactive Waste Liquid Treatment System" (application number 201310065960, published on June 5, 2013) does not consider the reuse of radioactive waste liquid after treatment, nor does it consider the Treatment of secondary waste generated after radioactive waste liquid treatment

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  • Method and system for treatment of radioactive waste liquid from nuclear power plants

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Embodiment 1

[0102] Such as figure 1 As shown, a method for treating radioactive waste liquid of a nuclear power plant is disclosed in this embodiment, including a waste liquid treatment and reuse method, and the waste liquid treatment and reuse method is as follows:

[0103] Step 1, the radioactive waste liquid is divided into high tritium waste liquid and low tritium waste liquid according to the different tritium activity concentration.

[0104] According to the different concentrations of tritium activity, the radioactive waste liquid generated by the operation of nuclear power plants is classified and collected, so as to divide it into high tritium waste liquid and low tritium waste liquid. Specifically, for radioactive waste liquid, if the activity concentration of tritium in it is ≥1×10 5 Bq / L, set as high tritium waste liquid, and collect it all in high tritium waste liquid collection tank 1; if the activity concentration of tritium is less than 1×10 5 Bq / L, set as low tritium wa...

Embodiment 2

[0141] This embodiment provides a nuclear power plant radioactive waste liquid treatment system, which includes a high-tritium waste liquid treatment system and a low-tritium waste liquid treatment system.

[0142] Such as figure 1 As shown, the high tritium waste liquid treatment system includes a high tritium waste liquid collection tank 1 , a first ultrafiltration process unit, a first ion exchange process unit, and a high tritium waste liquid intermediate tank 8 connected in sequence. Among them, the high tritium waste liquid collection tank 1 is used to collect high tritium waste liquid; the first ultrafiltration process unit is used to perform ultrafiltration process 4 on high tritium waste liquid; the first ion exchange process unit is used to treat high tritium waste liquid The waste liquid is treated by the ion exchange process 6; the high tritium waste liquid treated by the first ion exchange process unit is collected in the high tritium waste liquid intermediate tan...

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Abstract

The invention discloses a method for treatment of radioactive waste liquids from a nuclear power plant, including waste liquid treatment and reuse methods. The method of the invention comprises the following steps: dividing radioactive waste liquids into a high-tritium waste liquid and a low-tritium waste liquid according to different tritium activity concentrations; dividing the low-tritium wasteliquid into a low-tritium low-TDS waste liquid and low-tritium high-TDS waste liquid according to different TDS contents; treating the high-tritium waste liquid, and monitoring the treated high-tritium waste liquid for later discharge; respectively treating the low-tritium low-TDS waste liquid and the low-tritium high-TDS waste liquid, and monitoring the treated low-tritium low-TDS waste liquid and low-tritium high-TDS waste liquid for later reuse and / or later discharge. Correspondingly, the invention also provides a system for treatment of radioactive waste liquids from a nuclear power plant. By the method, miscellaneous radioactive waste liquids generated by the operation of a nuclear power plant can be specifically treated, and the water demand of the nuclear island part of the nuclearpower plant can be reduced.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plant waste treatment, and in particular relates to a treatment method and device for radioactive waste liquid of a nuclear power plant. Background technique [0002] In order to meet the growing energy demand of the economy and society, ensure long-term stable supply of energy, and reduce the impact of power generation on the environment, actively promoting nuclear power construction is an important policy for my country's current energy construction. But in the process of using nuclear energy to generate electricity, some radioactive waste will inevitably be produced. In order to protect human health and environmental safety, the treatment and minimization of radioactive waste has attracted the attention of countries all over the world. At the same time, in order to solve the increasingly serious energy problem, on the premise of ensuring safety and reliability, relevant state departments ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/08G21F9/12G21F9/22
CPCG21F9/08G21F9/12G21F9/22
Inventor 高瑞发张敬辉叶欣楠王艺霖林佳逸蔡挺松张志银
Owner CHINA NUCLEAR POWER ENG CO LTD
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