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    Surfactant recovery process
    1.
    发明授权
    Surfactant recovery process 失效
    表面活性剂回收过程

    公开(公告)号：US5294310A

    公开(公告)日：1994-03-15

    申请号：US913658

    申请日：1992-07-16

    申请人： James D. B. Smith ,  Karl F. Schoch, Jr. ,  David C. Grant

    发明人： James D. B. Smith ,  Karl F. Schoch, Jr. ,  David C. Grant

    IPC分类号： C02F1/463 ,  C02F9/00 ,  C25F5/00 ,  C02F1/46

    CPC分类号： C02F1/463 ,  C02F2101/327 ,  C02F2101/34

    摘要： Surfactants in an aqueous solution is recovered from polychlorinated biphenyls and other aromatic organic compounds contaminating the solution. An electrical current is passed through a surfactant-containing aqueous solution contaminated with a colloidal dispersion of organic compounds at a voltage sufficient to electrochemically breakup the dispersion without polymerizing the surfactant. The contaminating aromatic organic compounds are then separated from the surfactant-containing aqueous solution. The separated surfactant-containing aqueous solution may be recirculated to a waste treatment process for cleaning additional organic compounds from contaminated equipment.

    摘要翻译： 从多氯联苯和其他污染溶液的芳族有机化合物中回收水溶液中的表面活性剂。 电流通过含有表面活性剂的水溶液，该水溶液以足以电化学分解分散体的电压而不会使表面活性剂聚合而被有机化合物的胶态分散体污染。 然后将污染的芳族有机化合物与含表面活性剂的水溶液分离。 分离的含表面活性剂的水溶液可以再循环到废物处理过程中，以从污染的设备中清除附加的有机化合物。

    Process for the remediation of contaminated particulate material
    2.
    发明授权
    Process for the remediation of contaminated particulate material 失效
    污染颗粒材料的修复方法

    公开(公告)号：US5436384A

    公开(公告)日：1995-07-25

    申请号：US137457

    申请日：1993-10-18

    申请人： David C. Grant ,  Edward J. Lahoda ,  C. P. Keegan

    发明人： David C. Grant ,  Edward J. Lahoda ,  C. P. Keegan

    IPC分类号： G21F9/28 ,  B03B9/00 ,  B09C1/00 ,  B09C1/02 ,  G21F9/30 ,  G21F9/00

    CPC分类号： B03B9/00 ,  B09C1/02 ,  G21F9/30

    摘要： A method for segregating fines from the clean coarse fraction of the soil, preparing the contaminated fines for subsequent processing, and then separating the contaminants from the clean fines. The process produces a small, highly concentrated contaminanth fraction and a large fraction of clean soil. Metals, metallic compounds, and/or radioactive contaminants are removed from the fine fraction using either gravity separation, multistage gravity separation, a centrifugal jig, regular magnetic or paramagnetic separation using a high gradient magnetic separator, and/or a superconducting separator. Preparation of the fines requires selective segregation of the targeted particles size range and the removal of interfering soil fractions, and vegetation such as root hairs. This preparation is accomplished by a combination of attrition scrubbing, countercurrent jigging, and screening.

    摘要翻译： 一种将细粒与干净的粗糙部分分离的方法，为污染的细粉制备后续加工，然后将污染物与干净的细粉分离。 该过程产生小的，高度浓缩的污染物部分和大部分清洁的土壤。 和/或超导分离器，使用重力分离，多级重力分离，离心夹具，常规磁性或顺磁性分离法，从精细馏分中除去金属，金属化合物和/或放射性污染物。 细粉的制备需要选择性分离目标颗粒尺寸范围和去除干扰的土壤部分，以及植被如根毛。 该制备通过磨擦擦洗，逆流夹击和筛选的组合来实现。

    Permeability restoration and lowering of uranium leakage from leached ore beds
    3.
    发明授权
    Permeability restoration and lowering of uranium leakage from leached ore beds 失效
    渗透性矿床的渗漏恢复和铀泄漏降低

    公开(公告)号：US4270802A

    公开(公告)日：1981-06-02

    申请号：US109361

    申请日：1980-01-03

    申请人： David C. Grant ,  Herbert A. Burgman

    发明人： David C. Grant ,  Herbert A. Burgman

    IPC分类号： E21B43/28

    CPC分类号： E21B43/28

    摘要： The injection of an ammonium sulfite or bisulfite solution increases the permeability of an uranium ore bed that has suffered permeability losses during the in-situ mining of uranium with an alkaline leach solution containing a peroxide or dissolved oxygen oxidant. Such an injection recovers much of the lost formation permeability, thus decreasing costs and effort required to put needed restoration solutions or further leach solutions through the ore bed. In addition, uranium contamination of the ground water normally occurring after cessation of leaching is significantly lowered by such injection.

    摘要翻译： 亚硫酸铵或亚硫酸氢盐溶液的注入增加了在用含有过氧化物或溶解氧氧化剂的碱性浸出溶液原位开采铀过程中渗透损失的铀矿床的渗透性。 这种注入能够恢复大部分失去的地层渗透性，从而降低了将所需的修复液或进一步的浸出溶液通过矿床所需的成本和努力。 此外，通过这种注入，通常在浸出停止后通常发生的地下水的铀污染显着降低。

    Solution decontamination method using precipitation techniques
    5.
    发明授权
    Solution decontamination method using precipitation techniques 失效
    使用沉淀技术的溶液去污方法

    公开(公告)号：US5370827A

    公开(公告)日：1994-12-06

    申请号：US042188

    申请日：1993-04-02

    申请人： David C. Grant ,  Deborah P. Partlow ,  Edward J. Lahoda ,  Leland L. Learn

    发明人： David C. Grant ,  Deborah P. Partlow ,  Edward J. Lahoda ,  Leland L. Learn

    IPC分类号： B01D21/01 ,  C02F1/52 ,  C02F1/62 ,  G21F9/10 ,  G21F9/08

    CPC分类号： C02F1/5236 ,  G21F9/10 ,  C02F2101/006

    摘要： Solutions such as for example drinking water, ground water and extracting solutions contaminated with heavy metals and radioactive species, singly or in combination, are treated by first treating the contaminated solution with silicate and ammonium hydroxide solution precipitants. Then the contaminated solution is separately treated with an acid which gels, polymerizes and/or precipitates the contaminant-containing silica matrix to form an easily dewaterable and separable solid. The solid contaminants are readily removed from the cleansed solution by filtration means. The process utilizes a novel combination of steps which maximizes contaminant removal, minimizes waste volume, and produces a treatable waste solid. The preferred precipitants are sodium silicate, and ammonium hydroxide. The preferred mineral acid is hydrochloric acid.

    摘要翻译： 通过首先用硅酸盐和氢氧化铵溶液沉淀剂处理污染的溶液来处理例如饮用水，地下水和被重金属和放射性物质污染的提取溶液的单独或组合的解决方案。 然后将污染的溶液用酸进行单独处理，该酸会使含有污染物的二氧化硅基质凝胶化，聚合和/或沉淀，形成易于脱水和分离的固体。 固体污染物通过过滤装置容易地从清洁的溶液中除去。 该方法利用了最大限度地除去污染物，最小化废物体积并产生可处理废物固体的步骤的新颖组合。 优选的沉淀剂是硅酸钠和氢氧化铵。 优选的无机酸是盐酸。

    Method and apparatus for cleaning contaminated particulate material
    6.
    发明授权
    Method and apparatus for cleaning contaminated particulate material 失效
    清洁污染颗粒物的方法和设备

    公开(公告)号：US5268128A

    公开(公告)日：1993-12-07

    申请号：US648673

    申请日：1991-01-31

    申请人： Edward J. Lahoda ,  David C. Grant

    发明人： Edward J. Lahoda ,  David C. Grant

    IPC分类号： B09C1/02 ,  G21F9/04 ,  G21F9/00 ,  B03B5/28

    CPC分类号： B09C1/02 ,  G21F9/04

    摘要： Particulate material is treated by first washing the contaminated material with a contaminant mobilizing solution comprising a leaching agent, a surfactant or a mixture thereof. Large particles, typically greater than 5 mm are mechanically separated, washed with water and returned to the site as recovered soil. Fines, along with contaminants dissolved or dispersed in the contaminant mobilizing solution are separated from intermediate sized particles by a countercurrent flow of the contaminant mobilizing solution, preferably in a mineral jig. The intermediate sized particles are then abraded in an attrition scrubber to dislodge attached mineral slimes or fines. These additional fines are separated from the intermediate sized particles with a countercurrent flow of wash water in a second mineral jig. The preferred oxidizing agent is chlorine, and hydrogen is the preferred reducing agent.

    摘要翻译： 通过首先用包含浸出剂，表面活性剂或其混合物的污染物移动溶液洗涤被污染的材料来处理颗粒材料。 通常大于5mm的大颗粒机械分离，用水洗涤并作为回收的土壤返回到现场。 细粉以及溶解或分散在污染物移动溶液中的污染物通过污染物移动溶液的逆流流动，优选在矿物夹具中与中等尺寸的颗粒分离。 然后在磨耗洗涤器中研磨中等尺寸的颗粒以除去附着的矿物质泥或细粒。 这些额外的细粉与中等尺寸的颗粒分离，在第二矿物夹具中具有逆流的洗涤水。 优选的氧化剂是氯，氢是优选的还原剂。

    Method for treatment of waste sand
    8.
    发明授权
    Method for treatment of waste sand 失效
    废砂处理方法

    公开(公告)号：US5372650A

    公开(公告)日：1994-12-13

    申请号：US052509

    申请日：1993-04-27

    申请人： Edward J. Lahoda ,  David C. Grant ,  Nicholas D'Amico ,  Ching-Yu Lin ,  Arthur L. Wolfe ,  Ivan A. Martorell

    发明人： Edward J. Lahoda ,  David C. Grant ,  Nicholas D'Amico ,  Ching-Yu Lin ,  Arthur L. Wolfe ,  Ivan A. Martorell

    IPC分类号： B03B5/00 ,  B03B9/00 ,  B24C9/00 ,  B08B3/04

    CPC分类号： B03B9/00 ,  B24C9/006 ,  Y02P70/179

    摘要： A process system is disclosed for the treatment of a waste sand material containing metal contaminants. The waste sand material is the product of sandblasting techniques used to remove paint. The metal contaminants generally include lead, copper, chromium, mercury and cadmium, among other heavy metals. The process particularly provides for the concentration of the lead contaminant in a waste sand that can be economically reclaimed or disposed in an environmentally safe manner. The process also produces a cleaned sand that contains only residual amounts of the metallic contaminants in environmentally acceptable levels. The process provides for the contacting of the waste sand material with a paint decomposer, attrition abrading this sand slurry, size separating the attrition abraded slurry to form a waste sand slurry and a cleaned sand, and removing a portion of the excess water content in the waste sand slurry.

    摘要翻译： 公开了用于处理含有金属污染物的废砂材料的处理系统。 废砂材料是用于去除油漆的喷砂技术的产物。 金属污染物通常包括铅，铜，铬，汞和镉等重金属。 该方法特别提供可以经济地回收或以环境安全的方式处理的废弃物中的铅污染物的浓度。 该方法还产生清洁的砂，其仅含有在环境可接受水平中的残留量的金属污染物。 该方法提供了废砂材料与油漆分解器的接触，研磨该砂浆，将磨损的磨浆分离尺寸以形成废砂浆和清洁的砂，并除去一部分过量水分 废砂浆。

    In-situ restoration of contaminated soils and groundwater
    9.
    发明授权
    In-situ restoration of contaminated soils and groundwater 失效
    污染土壤和地下水的原位恢复

    公开(公告)号：US5324433A

    公开(公告)日：1994-06-28

    申请号：US870444

    申请日：1992-04-16

    申请人： David C. Grant ,  Edward J. Lahoda

    发明人： David C. Grant ,  Edward J. Lahoda

    IPC分类号： A62D3/00 ,  B09B3/00 ,  B09C1/00 ,  B09C1/02 ,  B09C1/08 ,  C02F1/26 ,  C02F9/00 ,  E02D3/10 ,  B01D11/04

    CPC分类号： B09C1/08 ,  B09C1/002 ,  B09C1/02 ,  B09C2101/00 ,  C02F2103/06

    摘要： A method for removing and stabilizing in-situ soluble heavy metal contaminants in land formations which comprises introducing into said formation an aqueous remediation solution comprising naturally-occurring ions present in said formation and remediation ions. The remediation solution selectively solubilizes and mobilizes the heavy metal contaminants into solution while substantially suppressing the displacement of said naturally-occurring ions from said formation. The method is effective with heavy metals which exist in both anionic and cationic form, and may be used to treat land formations below the surface to reduce soluble heavy metal contamination to a few parts per billion.

    摘要翻译： 一种用于去除和稳定陆地中的原位可溶性重金属污染物的方法，其包括向所述地层中引入包含存在于所述地层中的天然存在的离子的水性修复溶液和修复离子。 修复溶液选择性地将重金属污染物溶解并移动到溶液中，同时基本上抑制所述天然存在的离子从所述地层的位移。 该方法对于以阴离子和阳离子形式存在的重金属是有效的，并且可用于处理表面以下的地层以将可溶性重金属污染减少到十亿分之几。