Method for electro-kinetically decontaminating soil contained in a radioactive waste drum, and apparatus therefor
    1.
    发明授权
    Method for electro-kinetically decontaminating soil contained in a radioactive waste drum, and apparatus therefor 失效
    放射性废物桶中包含的电动电动除菌土壤的方法及其设备

    公开(公告)号:US06214189B1

    公开(公告)日:2001-04-10

    申请号:US09236230

    申请日:1999-01-22

    IPC分类号: B01D6156

    摘要: A method and an apparatus for electrokinetically decontaminating the soil contained in a radioactive waste drum are disclosed. The radioactively contaminated soil is put into drums, and the drums are carried to a temporary storage or to a disposal site. If the extremely low level radioactive soil is decontaminated rather than carrying the soil to the temporary storage or to a disposal site, and if the decontaminated soil is returned to the nature, then the limited storage capacity can be saved. Further, if a high level radioactive soil is treated to a low level one, and if thus a low level radioactive soil is stored in a storage, then the safety is improved. In the present invention, electrodes are buried into the contaminated soil contained in a radioactive waste drum, and a dc current is supplied, so that the radioactive nuclide and impurities can be removed by the electroosmosis and the electromigration. The anode includes: (1) at least 3 or more metal tubes made of titanium or zircaloy and having a diameter of 5 cm or less; (2) at least 6 or more metal rods made of stainless steel, titanium, or zircaloy; and (3) stainless steel sieves. The cathode is a tube made of carbon steel, stainless steel, or palladium, and has a diameter of 10 cm or less.

    摘要翻译: 公开了一种用于对放射性废料桶中所含的污物进行电动除菌的方法和装置。 将放射性污染的土壤放入桶中,将桶装载到临时存放处或处置场所。 如果极低水平的放射性土壤被净化而不是将土壤运送到临时储存处或处置场所,并且如果净化的土壤返回到自然界,则可以节省有限的储存能力。 此外,如果将高放射性土壤处理为低水平的放射性土壤,并且如果低水平放射性土壤储存在储存器中,则安全性得到改善。 在本发明中,将电极埋入放射性废物滚筒中的污染土壤中,并且提供直流电流,从而可以通过电渗和电迁移去除放射性核素和杂质。 阳极包括:(1)至少3个以上由钛或锆石制成的直径为5cm或更小的金属管; (2)至少6个以上由不锈钢,钛或锆石制成的金属棒; 和(3)不锈钢筛。 阴极是由碳钢,不锈钢或钯制成的管,直径为10cm以下。

    Method and device for collecting particulate contaminants during CO2 blasting decontamination
    2.
    发明授权
    Method and device for collecting particulate contaminants during CO2 blasting decontamination 有权
    CO2排放净化过程中收集微粒污染物的方法和装置

    公开(公告)号:US07097717B2

    公开(公告)日:2006-08-29

    申请号:US10493952

    申请日:2002-11-21

    IPC分类号: B08B7/04

    CPC分类号: G21F9/28 G21F9/001

    摘要: Disclosed is a method and device for collecting particulate contaminants removed using a CO2 decontamination medium from an early step of a decontamination process. The device removes particulate contaminants from a contaminated subject by a decontamination stream, and simultaneously forms another stream for collecting such contaminants into a collecting filter, thus preventing such contaminants from diffusing into the atmosphere. The device forms streams between the nozzles and the surface of the contaminated subject to readily move the nozzles along the surface of the subject without frictional resistance, to reduce the sense of fatigue of the operator. The method and device are advantageous in that when the device is readily used with a conventional CO2 blasting decontamination unit to collect particulate contaminants, removal of particulate contaminants from a contaminated subject and collection of particulate contaminants contained in the decontamination stream are simultaneously performed, also allowing compressed gas blasted through air curtain blasting nozzles to prevent contaminated gas from diffusing into the atmosphere.

    摘要翻译: 公开了一种用于从去污过程的早期步骤收集使用CO 2 N去污介质去除的微粒污染物的方法和装置。 该装置通过去污流从污染的受试者中除去微粒污染物,并且同时形成另外的流以将这些污染物收集到收集过滤器中,从而防止这些污染物扩散到大气中。 该装置在喷嘴和受污染物体的表面之间形成流,以便沿着被检体的表面容易地移动喷嘴而不产生摩擦阻力,以减少操作者的疲劳感。 该方法和装置的优点在于,当该装置易于与常规的CO 2爆破去污单元一起使用以收集颗粒污染物时,从污染的受试者中除去颗粒污染物并收集包含在污染物体中的颗粒污染物 同时进行净化流,还允许通过气幕喷射喷嘴喷射的压缩气体,以防止被污染的气体扩散到大气中。

    Method and device for collecting particulate contaminants during co2 blasting decontamination
    3.
    发明申请
    Method and device for collecting particulate contaminants during co2 blasting decontamination 有权
    在二次爆破净化过程中收集微粒污染物的方法和装置

    公开(公告)号:US20050076937A1

    公开(公告)日:2005-04-14

    申请号:US10493952

    申请日:2002-11-21

    IPC分类号: G21F9/00 G21F9/28 B08B7/04

    CPC分类号: G21F9/28 G21F9/001

    摘要: Disclosed is a method and device for collecting particulate contaminants removed using a CO2 decontamination medium from an early step of a decontamination process. The device removes particulate contaminants from a contaminated subject by a decontamination stream, and simultaneously forms another stream for collecting such contaminants into a collecting filter, thus preventing such contaminants from diffusing into the atmosphere. The device forms streams between the nozzles and the surface of the contaminated subject to readily move the nozzles along the surface of the subject without frictional resistance, to reduce the sense of fatigue of the operator. The method and device are advantageous in that when the device is readily used with a conventional CO2 blasting decontamination unit to collect particulate contaminants, removal of particulate contaminants from a contaminated subject and collection of particulate contaminants contained in the decontamination stream are simultaneously performed, also allowing compressed gas blasted through air curtain blasting nozzles to prevent contaminated gas from diffusing into the atmosphere.

    摘要翻译: 公开了一种用于从去污过程的早期步骤收集使用CO 2去污介质去除的微粒污染物的方法和装置。 该装置通过去污流从污染的受试者中除去微粒污染物,并且同时形成另外的流以将这些污染物收集到收集过滤器中,从而防止这些污染物扩散到大气中。 该装置在喷嘴和受污染物体的表面之间形成流,以便沿着被检体的表面容易地移动喷嘴而不产生摩擦阻力,以减少操作者的疲劳感。 该方法和装置的优点在于,当该装置易于与常规二氧化碳喷砂去污单元一起使用以收集颗粒污染物时,同时进行从污染物体中除去微粒污染物并收集除污流中的颗粒污染物,并允许 压缩气体通过气幕爆破喷嘴喷射,以防止受污染的气体扩散到大气中。

    Wet recycling process for impregnated active carbon by extraction with
organic solvent
    4.
    发明授权
    Wet recycling process for impregnated active carbon by extraction with organic solvent 失效
    用有机溶剂萃取浸渍活性炭的湿回收方法

    公开(公告)号:US06013593A

    公开(公告)日:2000-01-11

    申请号:US44161

    申请日:1998-03-19

    摘要: A wet recycling method for impregnated active carbon used to remove radioactive organic iodide in a nuclear power plant by extracting impregnated substance and radioactive organic iodide from the used impregnated active carbon with an acetonitrile solution and reproducing active carbon to be used in preparing impregnated active carbon, the filtered extractive solution being distilled to obtain pure acetonitrile for the use purpose as an extractive solution, the impregnated substance and radioactive organic iodide extracted in a small amount of solid, thus reducing the volume of the waste impregnated active carbon greatly to decrease solid waste material and at the same time recycle materials.

    摘要翻译: 用于通过从用过的浸渍活性炭中提取浸渍物质和放射性有机碘的乙腈溶液并再生用于制备浸渍活性炭的活性炭,用于去除核电厂中的放射性有机碘的浸渍活性炭的湿回收方法, 蒸馏过滤的萃取溶液以获得纯乙腈作为萃取溶液的用途,浸渍物质和放射性有机碘化物以少量固体萃取,从而大大减少废浸渍活性炭的体积,减少固体废物 并同时回收材料。