Treatment methods of nuclear wastewater

Abstract

A method for treating nuclear wastewater, comprising directly adding a superabsorbent resin with a mass ratio of 1%-5% to nuclear wastewater concentrated by chemical precipitation, then stirring to gel the nuclear wastewater, and then gelling the nuclear wastewater Together with the loose velvet particles and chemical flocculant filtered out by the chemical precipitation method, they are transferred to the anti-seepage and anti-radiation cement tank, pressurized to deform the gel into the shape of the cement tank cavity, and lay on the surface A layer of cement powder, pressurized again, so that part of the water in the gel seeps into the cement powder layer to solidify the cement powder, then first coat a layer of waterproof, anti-seepage and anti-leakage coating, and then apply a layer of anti-radiation coating, and then coat the cement A cement cover is added to the top of the tank to obtain a cement-sealed tank. The nuclear waste water exists in the tank in the form of gel, and finally the sealed tank is consigned and buried in a nuclear waste treatment warehouse built in a thick underground rock layer or below 4000m. The seabed will not cause harm to people and has little pollution to the environment. The invention can be used for nuclear wastewater treatment discharged from nuclear power plants.

Description

1. Technical field [0001] The invention relates to a treatment method and device for nuclear wastewater, belonging to the technical field of environmental protection. 2. Background technology [0002] Since Roentgen discovered X-rays in 1895 and Curie discovered radium in 1898, nuclear science and technology have been continuously developing and maturing, and profoundly changing the world. However, while nuclear science has brought great benefits to mankind, it has also brought serious security risks. For example, nuclear power generation, although it can meet human needs for energy, has caused people to worry about whether the tragedy of the Chernobyl nuclear accident will repeat itself. The application of radioactive elements in military, energy, industrial, agricultural, medical and other scientific research has been extensive. The amount of radioactive waste gas, waste liquid and solid waste produced during the whole development and utilization process is also increasi...

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Problems solved by technology

The disadvantage is that the volume of the cured body is larger than the original

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