Intermediate-and-low-radioactivity nuclear waste treatment device

Abstract

The invention discloses an intermediate-and-low-radioactivity nuclear waste treatment device. A storage barrel comprises a barrel body, a barrel cover, a passive exhaust valve and a dehydration filtering assembly. The barrel body and the barrel cover are respectively and integrally formed through crosslinked polyethylene, the barrel body is provided with an opening, the barrel cover are in sealed connection with the opening of the barrel body in an openable mode and is provided with a plurality of exhaust holes, the dehydration filtering assembly is arranged at the bottom of the barrel body and can be connected with an external pneumatic diaphragm pump, the passive exhaust valve is arranged on the barrel cover, and gas in the barrel body can be exhausted through the passive exhaust valve and the exhaust holes. Therefore, certain pressure of nuclear waste is kept during treatment, and expansion and breaking, caused by content decomposition, of the storage barrel do not exist. Besides, the barrel body and the barrel cover which are integrally formed and made of the crosslinked polyethylene are stable in chemical property and strong in corrosion resistance so that the nuclear waste can be directly contained in the storage barrel for a long time safely, the phenomena of swelling and crazing do not exist, radioactive liquid can not leak outward or cause environment pollution, the volume rate of the nuclear waste is greatly improved, and the treatment device is simple in structure.

Description

technical field [0001] The invention relates to the technical field of nuclear waste treatment equipment, and more particularly relates to a medium and low radioactive nuclear waste treatment device. Background technique [0002] The development of the nuclear industry, especially the rapid development of nuclear power plants, has produced a large amount of nuclear waste. Generally speaking, nuclear waste includes two types of low- and medium-level radioactive nuclear waste and high-level radioactive nuclear waste. Radioactive waste liquid and waste, such as waste resin, activated carbon, waste filter core, evaporated boron-containing waste liquid, etc., account for 99% of all nuclear waste, and the latter refers to the replacement from the nuclear power plant reactor core Burned nuclear fuel is commonly known as high-level radioactive waste because it is highly radioactive. Among them, low- and medium-level radioactive nuclear waste is less harmful. The internationally acc...

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Problems solved by technology

[0003] However, with the cement solidification method, the volume of nuclear waste after solidification is usually 3 to 4 times the original volume, and if the waste resin is cured alone by the cement solidification method, the waste resin will contain 15% to 20% of the waste resin (a higher containment capacity will make the The solidified body will swell and crack when it encounters water), and the capacity will be increased by 4 to 5 times, which completely does not meet the international and national requirements for waste minimization, and t

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