Water-based control elimination agent for diffusion of radioactive contamination dust and elimination method

Abstract

The invention provides a water-based control elimination agent for diffusion of radioactive contamination dust and an elimination method, and relates to a control elimination agent. The elimination agent contains a mixed solution synthesized from a liquid component A and a liquid component B through dispersion, wherein the liquid component A is prepared from raw materials in parts by weight as follows: 40-65 parts of polymer emulsion, 15-30 parts of water, 0.8-1.5 parts of a film forming aid, 0.5 parts of a defoamer, 0.4 parts of a dispersant, 2.5 parts of an antifreeze, 0.6 parts of an anti-mildew bactericide, 0.6 parts of a rheolobic modifier and 1.2-2.5 parts of a multifunctional adjusting agent; the liquid component B is prepared from raw materials in parts by weight as follows: 5-15 parts of a water reducing agent, 1-5 parts of a desiccant and 1.5-6 parts of a temperature-sensitive volatilization aid. According to the water-based control elimination agent and the elimination method, suspension and migration of radioactive dust particles are effectively prevented, a dry film can be stripped and transferred manually and mechanically after the copolymer film is dried under the natural condition, and accordingly, thepurpose of clearing of field radioactive pollution is achieved, and the purpose of field environmental purification is realized.

Description

technical field [0001] The invention relates to a control and elimination agent, in particular to a water-based control and elimination agent for radioactive contamination dust diffusion and an elimination method. Background technique [0002] It is well known that the airborne radioactive plume caused by a nuclear accident disperses, and due to the effects of gravity, dry and wet deposition, a radioactive material settlement area is formed on the ground surface, causing damage to the surface environment and the living environment of humans, animals and plants; from emergency response In terms of consequence control and elimination, the settlement area is divided into two types: open area and densely built area. The subsidence area suitable for large-scale engineering control and elimination operations is called open area, and other areas are generally called densely built areas. . [0003] Open areas include airports, docks, expressways, provincial roads, 1000m 2 For larg...

AI Technical Summary

Problems solved by technology

[0004] The method of on-site transfer of radioactive dust particles is usually used to control and eliminate the diffusion and migration of nuclear pollution dust particles on the ground in open areas. Traditionally, the following methods are used: (1) water washing method; (2) shovel method; (3) turning The disadvantages of traditional nuclear pollution control and elimination methods are mainly reflected in the following aspects: (1) The effect of surface migration control cannot meet the emergency response requirements, otherwise the cost will be huge; (2) The original solid nuclear pollutants will be transformed into liquid (3) It is easy to cause secondary or secondary pollution; (4) The elimination of nuclear pollution is not complete; (5) The amount of waste is large, and it is difficult to transport, store or High disposal costs; (6) Low operating efficiency, long disposal cycle, large exposure dose to personnel, and heavy radiation protection equipment; these disadvantages greatly limit the application of these traditional methods in the field of ground emergency control and elimination in open areas; the application number is : 201410060571.0, the name of the invention is: peeling type pressed stain remover; and the application number is: 200610018930.5, the name of the invention is: reactive type pressed stain remover; although the above two patents previously applied for overcome the shortcomings of traditional decontamination methods, It has also become the basic method for nuclear pollution emergency response in the field of nuclear accident emergency response, but in the process of use, there are the following problems: (1) The solid-liquid mixture is sprayed, and it needs to be stirred and mixed evenly before being filled into the operating equipment Diffusion control and decontamination pretreatment can only be implemented, the preparation period is long, the labor intensity is high, and the time limit for emergency use is poor; (2) The stability of the solid-liquid mixture is poor, and it is easy to agglomerate and block the pipeline. (3) The power equipment is severely worn; (4) The film-forming time is greatly affected by the environment, especially in the environment with high humidity and low temperature. The film-forming time is extended indefinitely, and the film-forming time cannot be formed in rain or cold