Greystone fiber modified porous light active calcium silicate highly radioactive wastewater treatment agent and preparation method

Abstract

The invention discloses a greystone fiber modified porous light active calcium silicate highly radioactive wastewater stabilization treatment agent and a preparation method. The composition is prepared from, by weight, 12-14 parts of greystone fiber, 40-42 parts of porous light active calcium silicate, 20-21 parts of silicon-magnesium rubber, 10-12 parts of epoxy group magnetic polymer microspheres, 20-22 parts of modified attapulgite, 3-4 parts of cetyl trimethyl ammonium bromide, 5-6 parts of sodium hydroxide, 2.5-3.5 parts of tetraethyl orthosilicate, 20-21 parts of modified iron oxide zeolite, 6-7 parts of cationic surfactant cetyl trimethyl ammonium bromide ionic liquid, 30-40 parts of polypropylene ester fiber, an adequate amount of deionized water, an adequate amount of ethyl alcohol and an adequate amount of water. The greystone fiber is adopted to modify the porous light active calcium silicate, the modified attapulgite is adopted to carry the greystone fiber, fusion is promoted, and acid and alkali resistance of adsorbent is improved; meanwhile, by means of the modified iron oxide zeolite and a silicon-magnesium rubber alkali solution, the adsorbing effect of a product is improved, and by means of the thermal reversibility of the silicon-magnesium rubber, the heat-resisting stability of the product is improved.

Description

technical field [0001] The invention belongs to the field of radioactive waste water treatment, and in particular relates to a basalt fiber modified porous light active calcium silicate highly radioactive waste water treatment agent and a preparation method. Background technique [0002] Nuclear power is an important part of my country's energy strategy, and it is also an important choice for my country to optimize energy structure, increase power supply, and cope with climate change. In the stage of rapid development of nuclear power, the safe disposal of nuclear waste is an important issue. Currently, high-level radioactive waste from nuclear power plants is 90 Sr 2+ and 137 Cs + It is a high heat release fission product with a long half-life period, and its removal is the key to the nuclear power radioactive waste disposal technology; [0003] Porous lightweight active calcium silicate although the 90 Sr 2+ and 137 Cs + It has good adsorption and removal performan...

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Problems solved by technology

[0003] Porous lightweight active calcium silicate although the 90 Sr 2+ and 137 Cs + It has good adsorption and removal performance, but its thermal stability, acid resistance and leaching resistance are poor, so it is not suitable for containing 90 Sr 2+ and 137 Cs + The treatment of high-level radioactive waste liquid is of great significance to the modification of porous light active calcium silicate to meet the treatment of high-level radioactive waste liquid

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