Process for treating radioactive wastewater

Abstract

The invention discloses a process for treating radioactive salt-containing wastewater. The process comprises the following procedures: a heating procedure, a membrane distillation procedure, an evaporative crystallization procedure, a solid waste treatment procedure and a recycling procedure. The method specifically comprises the following steps: (1) introducing radioactive salt-containing wastewater into a heater for heating; (2) enabling the heated radioactive salt-containing wastewater to enter a membrane distillation process to obtain a concentrated solution and first condensed water; (3)introducing the concentrated solution obtained in the step (2) into an evaporation salt collection device for evaporative crystallization to generate steam and solid wastes, performing a solid waste treatment process on the obtained solid wastes, and then collecting radioactive solids; and (4) introducing the first condensed water obtained in the step (2) into a recycling process. According to theprocess, the solar energy utilization rate is increased through the heat collecting plate, the wastewater evaporation rate is increased through membrane distillation, and finally solid-liquid separation is achieved through the evaporation salt collecting device. The process greatly improves the natural evaporation rate, accelerates the wastewater treatment, and greatly reduces the energy consumption by using solar energy.

Description

technical field [0001] The invention belongs to the technical field of radioactive saline waste water treatment, and in particular relates to a novel process method for treating radioactive waste water, in particular to a treatment process for radioactive saline waste water after extraction of uranium and plutonium after acid treatment. Background technique [0002] Since Roentgen discovered X-rays in 1895, people have opened the door to explore the world of atoms. During the past 100 years, the nuclear industry has advanced by leaps and bounds and made outstanding contributions to the economic construction of human society. At the same time, a large amount of radioactive waste was produced. In radioactive waste, especially radioactive waste water accounts for the main part. The volume of wastewater is large, the storage area is large, and the total amount of radioactive substances is large, which has become the focus of radioactive waste treatment. [0003] After the ore...

AI Technical Summary

Problems solved by technology

However, the evaporative concentration method has high energy consumption and large investment, and there is great resistance to further promotion.

Therefore, it is necessary to carry out a process for treating radioactive saline wastewater, which has achieved the purpose of recovering radioactive solids and discharging wastewater up to standard. Inappropriate, it will lead to the discharge of radioactive substances causing harm to animals and plants

Images