The way sorption of thorium from the soil, natural and industrial waters

 

The invention relates to the field of protection of the environment from radioactive waste. Summary of the invention for implementing the method sorption of thorium from the soil, natural and industrial waters using a porous composite material comprising vermiculite, activated carbon, glauconite, dextrin and powder perlite filter with an equal ratio of components. Advantages of the invention are to improve the quality sorption of thorium. table 1.

The invention relates to the field of purification of the environment, in particular to extract radioactive isotopes from contaminated soil, natural and industrial waters.

Known methods of sorption extraction of radioactive and toxic contamination of soil, natural and industrial waters (patent of Russia 1814422, IPC G 21 F 9/12 published 27.07.96,, bull. 21; the patent of Russia 2062518, IPC G 21 F 9/12 published 20.06.96,, bull. 17; the patent of Russia 1829718, IPC G 21 F 9/04, published 10.07.96,, bull. 19; the patent of Russia 2062520, IPC G 21 F 9/36 published 20.06.96,, bull. 17; the patent of Russia 2067328, IPC G 21 F 9/12 published 27.09.96,, bull. 27), based on the use as sorbents of inorganic substances.

Known the Yu sorbent vermiculite (patent of Russia 2065629 from 20.08.96,, IPC G 21 F 9/12 published 20.08.96,, bull. 23).

The disadvantage of these methods is relatively low as purification from radioactive elements in the soil, natural and industrial waters.

The known method (taken as a prototype) sorption of thorium from the soil, natural and industrial waters using vermiculite, activated carbon, glauconite and dextrin (patent of Russia 2166216, IPC G 21 F 9/12 published 27.04.01 year).

The disadvantage of this solution is the low degree of purification of the soil, natural and industrial waters.

The task of improving the quality sorption of thorium from the soil, natural and industrial waters can be solved by increasing the number of species sorption material with the increase of the sorption properties of the composition as a whole. This is achieved due to the fact that the extraction of thorium are using a porous composite material comprising vermiculite, activated carbon, glauconite, dextrin powder, perlite filter with an equal ratio of components.

Improving the quality of extraction of thorium from the soil, natural and industrial waters is due to the fact that the composite material is also injected powder period (perlite) by thermal and mechanical treatment. Powder perlite filter is used as an auxiliary filtering material for the formation of a precoat layer on the filters in filtering various suspensions: technological oils in metallurgical plants, oil, lubricants, fluids in chemical plants, antibiotics, vegetable oils, sewage and drinking water, sugar juice, etc.

Carry out the method using a device that represents adjoin each other filters, each weighing 30 kg has a size HH see Plastic frame with two sides has a grid of polymeric materials with a cell of 0.1 mm, between which poured composite material comprising vermiculite, activated carbon, glauconite, dextrin powder, perlite filter with an equal ratio of components with a filter area of HH see the Top of the filter is closed with a lid that snaps on the side walls. The cover has a handle for lifting when changing filters. Connection filters each other is by using the tool joints.

Experiments using the proposed method of extraction of thorium from the soil of natural and industrial waters was carried out directly is gaining

The way sorption of thorium from the soil, natural and industrial waters, which consists in the fact that the extraction of thorium are using a porous composite material comprising vermiculite, activated carbon, glauconite, dextrin, wherein the composite material further comprises a powder of perlite filter with an equal ratio of components.

 

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