Method for treating nuclear waste water and device thereof

A treatment method and technology for nuclear wastewater, applied in flocculation/sedimentation water/sewage treatment, nuclear engineering, radioactive purification, etc., can solve the problem of large volume of solidified body, achieve good treatment effect, small environmental pollution, and relative risk weight factor low effect

Inactive Publication Date: 2009-10-28
WUHAN INSTITUTE OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

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

Method used

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  • Method for treating nuclear waste water and device thereof
  • Method for treating nuclear waste water and device thereof

Examples

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Embodiment Construction

[0028] The following is an example to further illustrate the present invention, but not limited thereto.

[0029] Taking the treatment of 1 ton of nuclear wastewater as an example, build a pool with a length of about 2.0m, a width of about 1.0m, and a height of about 0.7m. The nuclear wastewater concentrated by chemical precipitation is discharged into the pool, and the mass ratio of the nuclear wastewater to the nuclear wastewater is 1%-5% superabsorbent resin (model: DF11-GXSS) is directly added to the nuclear wastewater concentrated by chemical precipitation, and the nuclear wastewater is gelled under stirring, and the nuclear wastewater gel is combined with the previous chemical precipitation method. The loose velvet particles and chemical flocculant filtered out after concentration by the method are transferred to the anti-seepage and anti-radiation cement tank, pressurized to deform the gel into the shape of the inner cavity of the cement tank, and lay a layer of cement p...

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Abstract

The invention discloses a method for treating nuclear waste water, which comprises the following steps: super absorbent resin with a mass ratio of 1 to 5 percent is directly added to the nuclear waste water concentrated by a chemical precipitation method; the mixture is stirred so as to jellify the nuclear waste water; loose woolen particles and a chemical flocculating agent obtained by filtering the nuclear waste water concentrated by the chemical precipitation method together with the nuclear waste water gel are transferred to an impermeable and radiation-proof cement groove; pressure is applied to deform the gel into the shape of the inner cavity of the cement groove and a layer of cement powder is arranged on the surface of the gel; pressure is applied again to cause part of water in the gel to exude out of the gel and enter the cement power layer to solidify the cement powder; a layer of water-proof, impermeable and leakage-proof coating is painted firstly and then a layer of radiation-proof coating is painted; a cement cover is positioned at the top end of the cement groove to obtain a sealed cement groove; the nuclear waste water is stored in the groove in the form of gel; and finally, the sealed groove is transported and buried in a nuclear waste treatment storehouse established in the underground and thick rock mass or the bottom of a sea which is 4000m in depth, thereby doing no harm to human beings and having little pollution on environment. The method can be applied to treating the nuclear waste water discharged by 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/06G21F9/10G21F9/16C02F1/52
Inventor 林志东周寻陈高峰张宏杜楠轩徐杰宋谢清
Owner WUHAN INSTITUTE OF TECHNOLOGY
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