cleaning decontamination method of internally contaminated structures by radioactive material and cleaning decontamination unit vehicle

摘要

Inside of the contaminated structures by radioactive material using a reducing water as wash water floor, wall, to remove contaminants, such as ceiling, providing a wastewater structures product inside the decontamination method contaminated radioactive material shall reusable by cleaning used for decontamination. A cleaning step of brushing by spraying the reduced water, which is negatively charged at a potential of -400mV~-600mV to decontamination object that has been contaminated with radioactive material, and cleaning wastewater recovery step of recovering the cleaning wastewater, washing wastewater a filtration step of filtering the coarse solids and is sent to the filter, the washing waste water, and packed with a cation exchange resin saturated with packed column or hydrogen ions a mixture of saturated clay and alum at a hydrogen-ion (alum) a first adsorption step of adsorbing and removing the cations of radioactive substances in the cleaning waste water is passed through the column, the wash effluent was negative ionization of the cleaning waste water is passed through a column of saturated anion exchange resin in the hydroxide ion a second adsorption step of adsorbing and removing the radioactive materials, the washing waste water, and passed through a further column filled with zeolite, the third adsorption step of removing radioactive material is remaining in the washing waste water, the washing waste water, air and an, a micro-bubble treatment step for returning to the higher biological activity of water is treated with microbubbles.