Method for deeply purifying and recovering hyperhaline fluoric-u radioactive waste solution

Abstract

The invention discloses a method for deeply purifying and recovering hyperhaline fluoric-U radioactive waste solution. The method comprises three sequent treatment phases including pretreatment, enrichment and separation of U-F and recovery of U, and can be further finely divided into 7 treatment units, including lower temperature reduction separation, chemical sedimentation, film filtering, step-grade organism enrichment-film filtering separation or step ion exchange, deposit fluorine removal solid-liquid separation, microwave tower treatment and resource recovery of U; under the condition that the salinity of waste solution to be treated is 0.1-10%, the initial U concentration is 0.1-1000mg / L, and the fluorine concentration is 0.01-15g / L, after treatment, the concentration of U is not larger than 0.05mg / L, the concentration of the fluorine is not higher than 10mg / L, and the recovery rate of U is larger than 90%. The method for deeply purifying and recovering hyperhaline fluoric-U radioactive waste solution is suitable for treating hyperhaline fluoric-U radioactive waste solution and the resource recovery of radioactive U.

Description

technical field

[0001] The invention relates to the field of environmental protection, in particular to a deep purification and recovery method of high-salt fluorine-uranium radioactive waste liquid, which is mainly used for removing inorganic salts in waste water, removing uranium and fluorine in waste water, and treating uranium Recycling. Background technique

[0002] Uranium and its compounds are one of the important raw materials in the nuclear industry and the basis for nuclear power applications and military nuclear weapons. Therefore, the sustainable development of uranium resources is very necessary, and the prevention and control of environmental pollution in the mining and utilization of uranium resources is the key . During the mass production and utilization of uranium resources, the types and quantities of uranium-containing wastewater produced are increasing, and the potential threats to human health and the natural ecological environment are increasing day b...

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