カテゴリー「contamination and decontamination」
Author: V.V. Strelko, D.I. Shvets, O.A. Glushachenko, N.M. Openko, L.M. Romanov, D.M. Grodzinsky, E.A. Konoplyastaya
Reference: Patent, 10.12.2002, Kiev patent holder: Institute of Sorption and Problems of Endoecology NAS (UA)
Keywords: soil, decontamination, plant
Abstract: The invention relates to environmental protection, in detail, to decontamination of soil affected by disaster at a nuclear power plant. The method includes growing of radiation-sorbable plants on soil, which has absorbed radionuclide materials, removal of the plants and their further utilization. The sort of plant utilized depends on the sort of the contaminating material. As sorbent material, is applied.
URL: http://www.findpatent.ru/patent/219/2194319.html
Author: L.F. Gorovoi, V.N. Kosyakov, G.I. Kuznetsov, A.A. Pushkov, L.I. Shklyar
Reference: Patent, 20.04.2001, Moscow patent holder: L.F. Gorovoi, V.N. Kosyakov, G.I. Kuznetsov, A.A. Pushkov, L.I. Shklyar
Keywords: liquid waste cleaning, sorption
Abstract: The invention relates to radiochemistry, namely to the cleaning of liquid radioactive wastes. Provides a method of continuous countercurrent sorption process, with separation of solid and liquid phases, in a cascade of one-stage centrifugal sorption, installed horizontally.
URL: http://www.findpatent.ru/patent/216/2165284.html
Author: L.V. Shmakov, Yu.V. Garusov, V.M. Tishkov, V.I. Cheremiskin, G.A. Lenisov, A.V. Chernikin, G.M. Lemberg
Reference: Patent, 10.03.2001, patent holder: State enterprise Leningrad Nuclear Power Plant named after V.I. Lenin, Closed Joint Stock Company Scientific-Production Association “Energoatominvent”
Keywords: liquid waste, decontamination, evaporation
Abstract: The invention relates to nuclear technology. The method consists of evaporation of liquid waste in evaporators, cooling of condensate of secondary vapor, purification and its desalination through filter. Part of the desalted condensate – the unbalanced water – is concentrated, being repeatedly passed through cooling towers and heat exchanger. Then radionuclides are removed in bypass treatment.
URL:http://www.findpatent.ru/patent/216/2164045.html
Author: A.P. Vasilyev, M.E. Netecha, B.P. Frolov, G.A. Khacheresov
Reference: Patent, 27.08.2001, Moscow patent holder: State Unitary Enterprise “Research and Development Institute of Power Engineering”
Keywords: metal, decontaminating, electric arc discharge
Abstract: The material1, with contaminated metal surface, is placed into a working receptacle, then a movable electrode2, of gap 0.05~1mm, is set. The material1 and electrode2 are connected to the terminals of a pulse generator → desalinated water is supplied into the gap, at a velocity not less than 0,1m/s → electric arc is ignited. High temperature, caused by the electric arc discharge, induces melting of the surface layer of the metal.
URL: http://www.findpatent.ru/patent/217/2172992.html
Author: R.A. Penzin, E.A. Belyakov, A.A. Shvedov, O.V. Evdokimov, S.N. Pichugin
Reference: Patent, 20.09.1998, Moscow patent holder: R.A. Penzin
Keywords: liquid waste, decontamination, cesium, strontium, reverse osmosis, distillation
Abstract: Usage: chemical technology, specifically in the nuclear environment, the processing of liquid radioactive waste (LRW) resulting from the operation of various atomic power plants. Stepwise processing of liquid waste, containing cesium and strontium, is conducted in the following sequence:
>Pre-treatment stage: mechanical cleaning, ultrafiltration, microfiltration
>Passing through selective inorganic sorbent, based on ferrocyanide of transitional metal of copper, nickel, cobalt and porous inorganic carrier, then subjected to desalting and concentration using one of the following methods:
1. distillation
2. two-step method: first step: usage of reverse osmosis or electro-demineralization, second step: distillatory or electroosmotic concentration.
URL: http://www.findpatent.ru/patent/211/2118945.html
Author: I.G. Toporov, V.N. Zabrodsky, N.I. Voronik, Yu.P. Davydov, V.V. Toropova, M.I. Tereshenko
Reference: Patent, 20.01.1998, Moscow patent holder: Institute of radioecological problems, Belorussia
Keywords: solution, deactivation, oxalic acid
Abstract: Deactivation of liquid materials by sorption. Liquid radioactive solution is treated with oxalic acid, up to its content in the contaminated solution 510-4 mol / l, nitric acid content is adjusted to 0.1 – 0.5 mol / l, wherein the solution is set to pH 1.0 -0 3.
URL: http://www.findpatent.ru/patent/210/2102803.html
Author: A.S. Kozyrev, A.I. Timashov, E.M. Zelentsov, N.A. Mikhailova, V.Ya Elizarov
Reference: Patent, 10.04.2001, Tomsk patent holder: Siberian chemical combine
Keywords: plant, apparatus, decontamination
Abstract: Decontamination of surfaces of equipment contaminated by radionuclides. May be applied for decontamination of various operations of a radiochemical plant. Solutions of oxidizing and complexing agents are poured alternately onto the object, then it is heated and kept at the heated temperature. The method contains several cycles of treatment.
URL: http://www.findpatent.ru/patent/216/2165111.html
Author: V.A. Babain, R.N. Kiseleva, A.A. Murzin, V.N. Romanovsky, V.A. Starchenko, I.V. Smirnov, A.Yu. Shadrin
Reference: Patent, 10.06.2001, Moscow patent holder: V.G. Khlopin Radium Institute
Keywords: waste, decontamination, supercritical solvent
Abstract: The invention relates to treatment of radioactive wastes. The matrix, contaminated by radionuclides, is kept in a chamber with high pressure, within supercritical solvent, in the presence of water, organic acid and complexone. After soaking, pumping of chamber, with supercritical carbon dioxide, is conducted for the sake of complete extraction, then the extracted metal is collected into the solution.
URL: http://www.findpatent.ru/patent/216/2168779.html
Author: V.A. Lekomtsev
Reference: Patent, 10.03.2003, St. Petersburg patent holder: I.K. Meshkovsky
Keywords: decay products, decontamination
Abstract: This invention can be applied for decontamination of radioactive waste, mainly for decay products of a nuclear reactor. The decontamination is processed through technogenic transmission of radionuclides.
URL: http://www.findpatent.ru/patent/220/2200353.html
Author: R.A. Penzin, V.C. Sheptunov, B.M. Lesokhin, V.K. Bulygin, S.V. Petrov
Reference: Patent, 27.05.1998, Moscow patent holder: R.A. Penzin
Keywords: liquid waste, treatment, filtration, cesium, strontium
Abstract: Usage: chemical technology, specifically in the nuclear environment, the processing of liquid radioactive waste (LRW) resulting from the operation of various atomic power plants. Stepwise processing of liquid waste, containing cesium and strontium, is conducted in the following sequence:
>Pre-treatment stage: mechanical cleaning, ultrafiltration, microfiltration
>Passing through selective inorganic sorbent, based on ferrocyanide of transitional metal of copper, nickel, cobalt and porous inorganic carrier
> Passing through reverse osmosis module, at salt concentrations of 1 g / l, in one step. The second step of the same, with flows divided into concentrate and permeate, is then subjected to post-treatment by passing through a sorbent selected from the group of:
synthetic zeolite of type “A”, chabazite of hexagonal structure or natural zeolite of monoclinic structure, which are used as a modified zeolite “CM-SELEX.”
URL:http://www.findpatent.ru/patent/211/2112289.html
