Method for purifying and disposing low-medium radioactive degradable PVA product
A low-radioactive and radioactive technology, applied in the field of low-radioactive degradable PVA products, can solve the problems of temporary storage pressure of radioactive waste and increase the final disposal cost of power plant operation cost, and achieve the effect of eliminating harm, reducing waste and reducing storage.
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[0026] Example 1
[0027] like figure 1 As shown, a method for purifying and disposing of low-level radioactive degradable PVA products, comprising the following steps:
[0028] (1) Dissolution: Put the medium and low radioactive degradable PVA product into the dissolving tank, and dissolve the PVA product in water by heating and / or stirring and / or self-circulation; the dissolving step is to degrade the medium and low radioactive degradable products The PVA product is completely immersed in the aqueous solution, and dissolved in the manner of continuous heating and stirring; the PVA product is completely dissolved into a homogeneous liquid, and the temperature is 70 ° C;
[0029] (2) Degradation: the PVA solution is degraded by chemical methods; the degradation step adopts the method of catalysis, oxidation, or a synergistic reaction of catalytic oxidation, specifically Fenton or photocatalysis; the reaction temperature is 150 ° C; the PVA solution is degraded It is a substa...
Example Embodiment
[0034] Example 2
[0035] like figure 1 As shown, a method for purifying and disposing of low-level radioactive degradable PVA products, comprising the following steps:
[0036] (1) Dissolution: Put the medium and low radioactive degradable PVA product into the dissolving tank, and dissolve the PVA product in water by heating or self-circulation; the dissolving step is to completely immerse the medium and low radioactive degradable PVA product in the aqueous solution , dissolve in continuous heating and self-circulation; completely dissolve the PVA product into a homogeneous liquid at a temperature of 120 °C;
[0037] (2) Degradation: the PVA solution is degraded by chemical methods; the degradation step adopts the method of catalysis, oxidation, or a synergistic reaction of catalytic oxidation, specifically electro-Fenton or photocatalysis; the reaction temperature is 70°C; The PVA solution is degraded into substances containing a large number of small molecular structures,...
Example Embodiment
[0042] Example 3
[0043] like figure 1 As shown, a method for purifying and disposing of low-level radioactive degradable PVA products, comprising the following steps:
[0044] (1) Dissolution: Put the medium and low radioactive degradable PVA product into the dissolving tank, and dissolve the PVA product in water by heating and self-circulation; the dissolving step is to completely immerse the medium and low radioactive degradable PVA product in the aqueous solution , dissolve in the mode of continuous heating and stirring; completely dissolve the PVA product into a homogeneous liquid, the temperature is 90 ℃;
[0045] (2) Degradation: the PVA solution is degraded by a chemical method; the degradation step adopts a method of catalysis, oxidation, or a synergistic reaction of catalytic oxidation, specifically electro-Fenton and titanium oxide catalysis; the reaction temperature is 150 ° C; The PVA solution is degraded into substances containing a large number of small molec...
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