Online monitoring device for multiple nuclides in liquid effluent

An online monitoring device for multiple nuclides in liquid effluents, integrating a cascaded separation module and a fluid control module, employs a multi-resin column array and dynamic flow path control technology to achieve rapid and efficient monitoring of nuclides such as Fe-55, Ni-63, Sr-89, and Sr-90 in liquid effluents from nuclear power plants. This solves the problem of long analysis time in traditional methods, improves monitoring efficiency, and reduces costs.

CN120972223APending Publication Date: 2025-11-18SUZHOU NUCLEAR POWER RES INST CO LTD +2
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Patent Information

Application Number
CN202511131458.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-13
Publication Date
2025-11-18

AI Technical Summary

Technical Problem

Existing technologies are insufficient for the rapid and efficient monitoring of radionuclides such as Fe-55, Ni-63, Sr-89, and Sr-90 in liquid effluents from nuclear power plants. Traditional methods require complex radiochemical separation processes, resulting in long analysis times and impacting production and operation.

Method used

An online monitoring device for multiple nuclides in liquid effluents was designed, integrating a cascaded separation module, a fluid control module, and a detection module. It employs a multi-resin column array and dynamic flow path control technology to achieve synchronous monitoring and automatic switching of multiple nuclides, and combines a β detector array for real-time detection.

Benefits of technology

It enables rapid and synchronous monitoring of multiple nuclides, shortens the analysis time to within 24 hours, reduces manpower and material costs, reduces equipment size and space occupation, and improves monitoring efficiency and automation.

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Abstract

The invention provides an online monitoring device for multiple nuclides in liquid effluent, and particularly relates to the technical field of radioactive substance detection. The online monitoring device comprises a shell, a cascade separation module, a fluid control module, a detection module and a control system, the cascade separation module, the detection module and the control system are arranged in the shell, the cascade separation module comprises a plurality of resin columns and a plurality of separated liquid collecting bottles communicated with the resin columns, and the separated liquid collecting bottles are communicated with the resin columns. The fluid control module comprises a liquid storage device, an injection pump and a control valve, the liquid storage device is respectively communicated with the plurality of resin columns through pipelines, the injection pump and the control valve are respectively arranged on the pipelines and are used for controlling the flow direction and the flow velocity of fluid in the liquid storage device, and the detection module is used for detecting the radioactive activity of nuclide; the control system is used for controlling operation of the cascade separation module, the fluid control module and the detection module. According to the invention, synchronous monitoring of multiple nuclides is realized, the multi-nuclide monitoring efficiency is improved, and the monitoring cost is reduced.
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