Cleaning agent for removing radionuclides and using method of cleaning agent

A radionuclide and cleaning agent technology, which is applied in the direction of radioactive purification, detergent composition, chemical instruments and methods, etc., can solve the problems that are difficult to be popularized and applied, and achieve the effect of good removal effect, wide source of raw materials, and convenient use

Inactive Publication Date: 2015-07-22
武汉网绿环境技术咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of the organism itself by ma

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1

[0028] Cleaning solution composition: A component is 98% formic acid 10%, 25% ammonia water 30%, the balance is water; B component is 99% ferrous sulfate, the addition amount is 40% of the total mass of A component, surface The amount of active agent added is 3% of the total mass of component A.

[0029] Mix a certain amount of radioactively contaminated soil (with a specific activity of 50780cpm) with the cleaning solution in a ratio of 1:2.5, add 1M ammonium formate solution to adjust the pH to 6, at 50℃, stir for 30min, filter and then Repeat the treatment once according to the above method, centrifuge to filter and dry the soil, and use the NaI scintillation counter to determine the soil radioactivity to be 17823 cpm, according to the formula:

[0030] Removal rate = (specific activity before treatment-specific activity after treatment) / specific activity before treatment calculated removal rate of 64.9%.

Example Embodiment

[0031] Example 2

[0032] Cleaning solution composition: component A is 98% formic acid 20%, 25% ammonia water 40%, the balance is water; component B is 99% sodium carbonate, the addition amount is 40%, 99% of the total mass of component A The addition amount of sodium sulfate is 5% of the total mass of component A, 99% potassium sulfate 3%, and surfactant 3%.

[0033] Mix a certain amount of radioactively contaminated soil (with a specific activity of 900cpm) with the cleaning solution at a ratio of 1:2.5, add 1M ammonium formate solution to adjust the pH to 6.5, stir for 30min at 100°C, centrifuge and filter Dry the soil and use NaI scintillation counter to determine the amount of soil radioactivity to be 445 cpm, according to the formula:

[0034] Removal rate = (specific activity before treatment-specific activity after treatment) / specific activity before treatment calculated removal rate of 50.5%.

Example Embodiment

[0035] Example 3

[0036] Cleaning solution composition: component A is 98% formic acid 60%, 25% ammonia water 30%, the balance is water; component B is 99% sodium sulfate, the addition amount is 8%, 99% of the total mass of component A The addition of zinc sulfate is 50% of the total mass of component A, the addition of 99% calcium hydroxide is 8% of the total mass of component A, and the addition of 99% potassium sulfate is 5% of the total mass of component A. Surface The amount of active agent added is 8% of the total mass of component A.

[0037] Mix a certain amount of radioactively contaminated soil (with specific activity of 885cpm) with the cleaning solution at a ratio of 1:2.5, add 1M ammonium formate solution to adjust the pH to 6, at 120℃, stir for 30min, centrifuge and filter Dry the soil, and use a NaI scintillation counter to determine the amount of soil radioactivity to be 328 cpm, according to the formula:

[0038] Removal rate = (specific activity before treatment-...

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PUM

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Abstract

The invention discloses a cleaning agent for removing radionuclides and a using method of the cleaning agent. The cleaning agent is formed by mixing two components A and B, wherein the component A comprises substances in percentage by mass as follows: 5%-80% of 98% formic acid, 20%-70% of 25% ammonia water and the balance of water; the component B is any one or more of 99% ferrous sulfate, 99% sodium carbonate, 99% sodium sulfate, 99% zinc sulfate, 99% calcium hydroxide, 99% potassium sulfate and a surfactant. The cleaning agent is simple in composition, wide in raw material source, low in cost, convenient to use, good in removing effect on the radionuclides and capable of quickly treating a large quantity of radionuclide pollutants and reducing the treatment cost.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to a cleaning agent for removing radionuclides. Background technique [0002] At present, the wide application of nuclear technology in many fields such as energy, scientific research, medical treatment, industry, agriculture, military affairs, transportation, medical care and health has brought about increasing nuclear pollution problems. These radioactive wastes pose great potential threats to the environment and public health. Disposing of these radioactive wastes has become a global problem. [0003] Traditional treatment methods, such as mechanical cleaning with surfactants, ion exchange resins, membrane separation and acid leaching, have the disadvantages of high infrastructure investment, high treatment costs, unsatisfactory treatment effects, and easy to cause secondary pollution. Many questions. Removing radionuclides from the environment is very difficult. For a large area ...

Claims

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Application Information

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IPC IPC(8): C11D10/02G21F9/30
Inventor 苏敏
Owner 武汉网绿环境技术咨询有限公司
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