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Device for reducing concentration of total organic carbon in boric acid solution

A technology of boric acid solution and total organic carbon, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc.

Inactive Publication Date: 2016-03-23
CENT VYZKUMU REZ
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is currently no other method for removing organic carbon from boric acid solutions other than the water exchange described above

Method used

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  • Device for reducing concentration of total organic carbon in boric acid solution
  • Device for reducing concentration of total organic carbon in boric acid solution
  • Device for reducing concentration of total organic carbon in boric acid solution

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Embodiment

[0020] exist image 3 with Figure 4 In the tests shown, the following peroxides were used as oxidizing agents: hydrogen peroxide and potassium persulfate, respectively. Test the present invention in the model water and real water of nuclear power plant through laboratory figure 1 The device for reducing the concentration of total organic carbon (TOC) was tested. The test results are summarized in the image 3 with Figure 4 middle. From the test, it can be seen that the whole system of the present invention has obvious efficacy.

[0021] exist image 3 with Figure 4 Among them, abscissas 18 and 18' represent time [min]; ordinates 12 and 12' represent total organic carbon (TOC) concentration [μg / L]; 13 and 13' represent input solution (containing total organic carbon (TOC) boric acid solution); 14 and 14' represent the total organic carbon (TOC) concentration of the solution after ultraviolet radiation; 15 and 15' represent the total organic carbon (TOC) concentration...

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Abstract

The present invention aims to provide a device for reducing concentration of total organic carbon in boric acid solution. The device can reduce the concentration of total organic carbon (TOC) in cooling water containing boric acid in a nuclear reactor primary loop system by using UV radiation. The device comprises a liquid storage tank of input solution (containing total organic carbon and boric acid solution) and a pump, wherein the pump is used for pumping solution from the liquid storage tank to a UV lamp. A connecting pipe is arranged on a pipeline in front of the UV lamp for adding of a free radical reaction initiator, and the initiator is pumped by a metering pump. Mixed solution of the initiator and the boric acid solution flows into the UV lamp, and complicated organic matter is decomposed into simple matters in the UV lamp. After that, the solution flows into a activated carbon adsorption bed, so as to reduce the excess free radical reaction initiator. The solution in which the excess free radical reaction initiator is removed flows into an air discharge duct, so as to form oxygen and discharge carbon dioxide. Then the solution is pumped to a mixed bed column for thorough purification by a pump, and resin in the mixed bed column comprises a strong acidic cation exchanger and a strong base anion exchanger.

Description

technical field [0001] The technical solution of the present invention involves reducing the total organic carbon (TOC) concentration in boric acid-containing cooling water (i.e., boric acid solution) in the primary loop system of a nuclear reactor by using ultraviolet radiation, followed by the use of peroxides, combined with the use of activated carbon Adsorption bed and mixed bed (mixed bed column), so as to achieve the purpose of removing the total organic carbon in the boric acid solution. Background technique [0002] boric acid (radioisotope 10 B) As a neutron absorber, it is added to the primary circuit refrigerant of nuclear power plant pressurized water reactors (pressurized water reactor PWR and water-water high energy reactor VVER). Changes in the concentration of boric acid in the primary refrigerant can affect the number of neutrons, thereby affecting the scale and speed of the splitting reaction. Organics can enter the refrigerant through various leaks, or a...

Claims

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Application Information

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IPC IPC(8): C02F9/08
Inventor 帕维尔·库斯
Owner CENT VYZKUMU REZ
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