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1. 发明授权

US5300258A Method for decontaminating soil containing resins 失效
标题翻译：去污土壤树脂的方法
公开(公告)号：US5300258A
公开(公告)日：1994-04-05
申请号：US722458
申请日：1991-06-27
申请人： David C. Grant , Edward J. Lahoda , Leland L. Learn , Arthur W. Ott , Albert J. Dietrich
发明人： David C. Grant , Edward J. Lahoda , Leland L. Learn , Arthur W. Ott , Albert J. Dietrich
IPC分类号： B03B5/00 , B03B5/12 , B03B9/00 , B09C1/02 , G21F9/00
CPC分类号： B03B9/00 , B09C1/02
摘要： A method for removing contaminated resin particles from soils. The method entrains the resin particles and fines from the soil, which, due to the difference in specific gravity between resin and soil particles, results in a significant disparity between particle size of the entrained resin and the entrained fines. This, in turn permits the fines to be screened from the resin and the larger soil particles, which have not been entrained, to settle out from the mixture.
摘要翻译：从土壤中去除污染的树脂颗粒的方法。该方法将树脂颗粒和细粉从土壤中引入，由于树脂和土壤颗粒之间的比重差异，导致夹带的树脂的颗粒尺寸与夹带的细粒之间存在显着差异。这又允许从树脂筛选细粒并且还没有被夹带的较大的土壤颗粒从混合物中沉淀出来。

2. 发明授权

US4963293A Flow control method for decontaminating radioactively contaminated nuclear steam generator 失效
标题翻译：用于净化放射性污染核蒸汽发生器的流量控制方法
公开(公告)号：US4963293A
公开(公告)日：1990-10-16
申请号：US501979
申请日：1983-06-07
申请人： Robert D. Burack , August J. Friedrich , Albert J. Dietrich
发明人： Robert D. Burack , August J. Friedrich , Albert J. Dietrich
IPC分类号： G21F9/28 , G21F9/00
CPC分类号： G21F9/004 , G21F9/001
摘要： The invention comprises a method for conducting a decontamination solution into a nuclear steam generator for radioactively decontaminating the nuclear steam generator. The invention also comprises controlling the level of the decontamination solution in the heat exchange tubes of the nuclear steam generator in a manner to raise and lower, sequentially, the level of the decontamination solution in the tubes so as to replenish the decontamination solution in the tubes and to carry away the radioactive contaminates.
摘要翻译：本发明包括一种用于对核蒸汽发生器进行净化溶液的放射性净化核蒸汽发生器的方法。本发明还包括以提高和降低管中去污溶液的水平的方式控制核蒸汽发生器的热交换管中的去污溶液的水平，以便补充管中的去污溶液并带走放射性污染物。

3. 发明授权

US5640701A Method for remediating soil containing radioactive contaminants 失效
标题翻译：补救含有放射性污染物的土壤的方法
公开(公告)号：US5640701A
公开(公告)日：1997-06-17
申请号：US997076
申请日：1992-12-29
申请人： David C. Grant , Edward J. Lahoda , Albert J. Dietrich
发明人： David C. Grant , Edward J. Lahoda , Albert J. Dietrich
IPC分类号： B09C1/02 , G21F9/28 , G21F9/00
CPC分类号： B09C1/02 , G21F9/28
摘要： Soil comprising small soil particles, clay and silt particles, humus, fine vegetation, and contaminated with soluble or insoluble radioactive species is treated by first introducing an aqueous extracting solution comprising a mixture of sodium and potassium carbonate (or bicarbonate), or ammonium carbonate (or bicarbonate) into the soil to solubilize and disperse the radioactive species into solution. The extracting solution has a pH greater than or equal to about 7.5. Contaminated fine vegetation then is separated from the soil and extracting solution. Next, an acid like hydrochloric acid is introduced into the soil. The acid is added in an amount sufficient to lower the pH of the extracting solution at which point desirable organic material will substantially precipitate or coagulate from the extracting solution. The cleansed soil particles, including organic matter, is separated from the contaminated extracting solution. Radioactive species are then removed from the extracting solution, which then may be reused.
摘要翻译：通过首先引入包含碳酸钠和碳酸钾（或碳酸氢钠）或碳酸铵（或碳酸氢钠）的混合物的水提取溶液来处理包含小的土壤颗粒，粘土和粉砂颗粒，腐殖质，细小植被和被可溶性或不溶性放射性物质污染的土壤或碳酸氢盐）放入土壤中以将放射性物质溶解并分散到溶液中。提取液的pH值大于或等于约7.5。污染好的植被然后与土壤和提取液分离。接下来，将酸如盐酸引入土壤中。加入的酸的量足以降低萃取溶液的pH值，此时所需的有机物质将从萃取溶液基本上沉淀或凝结。清洁的土壤颗粒（包括有机物质）与污染的提取溶液分离。然后从提取溶液中除去放射性物质，然后可以重复使用。

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