发明名称 |
METHOD OF DECONTAMINATING LOW-MINERALISED LOW-ACTIVITY WASTES IN FIELD CONDITIONS |
摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to the technology of decontaminating liquid radioactive wastes using a membrane-sorption method in field conditions. The method of decontaminating low-mineralised low-activity liquid radioactive wastes is realised through cleaning on mechanical and ultra-filters, desalination on reverse-osmosis filters and post-cleaning on ionite filters with post-evaporation of the formed radioactive concentrates until salt saturation at temperature lower than 100C in a container and subsequent addition of the saturated salt concentrates to portland cement. Also, wastes are cleaned from radio nuclides on filters using selective sorbents with protection from ionising radiation. Post-evaporation of concentrates from reverse-osmosis filters is carried out at atmospheric pressure in a container. The condensate from the evaporation apparatus is returned to the ultra-filters. The concentrate from the ultra-filters is returned to the mechanical filters. Initial radioactive concentrates with beta-radiating nuclides specific activity greater than 0.1 MBq/kg and/or radioactive concentrates with specific activity greater than 0.1 MBq/kg before evaporation are directed to the selective sorbent filters. ^ EFFECT: more efficient removal of radionuclides even without using selective sorbent filters. ^ 1 dwg, 4 ex |
申请公布号 |
RU2412494(C1) |
申请公布日期 |
2011.02.20 |
申请号 |
RU20090144587 |
申请日期 |
2009.12.01 |
申请人 |
FEDERAL'NOE GOSUDARSTVENNOE UNITARNOE PREDPRIJATIE "NAUCHNO-ISSLEDOVATEL'SKIJ TEKHNOLOGICHESKIJ INSTITUT IMENI A.P. ALEKSANDROVA" |
发明人 |
EPIMAKHOV VITALIJ NIKOLAEVICH;OLEJNIK MIKHAIL SERGEEVICH;EPIMAKHOV TIMOFEJ VITAL'EVICH;GANJUSHKIN ANDREJ FEDOROVICH |
分类号 |
G21F9/04 |
主分类号 |
G21F9/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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