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1. 发明授权

US5372650A Method for treatment of waste sand 失效
标题翻译：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。

2. 发明授权

US5414195A System and method for on-line monitoring and control of heavy metal contamination in soil washing process 失效
公开(公告)号：US5414195A
公开(公告)日：1995-05-09
申请号：US899962
申请日：1992-06-17
申请人： Steven H. Peterson , Edward J. Lahoda , David C. Grant , Edward F. Sverdrup , Thomas V. Congedo , John Bartko , Robert E. Witkowski , Arthur L. Wolfe , William D. Partlow , Michael C. Skriba
发明人： Steven H. Peterson , Edward J. Lahoda , David C. Grant , Edward F. Sverdrup , Thomas V. Congedo , John Bartko , Robert E. Witkowski , Arthur L. Wolfe , William D. Partlow , Michael C. Skriba
IPC分类号： G01N21/71 , G01N21/85 , G01N23/12 , G21F9/00 , B07C5/34
CPC分类号： G01N23/12 , G01N21/718 , G01N21/85 , Y10S588/90
摘要： The concentrations of residual heavy metal contaminants in the particulate material in a slurry produced in a particulate material washing process are monitored on-line and can be used to control the washing process. In alternative embodiments of the invention, x-rays, thermal neutrons or laser beams are directed at the slurry as it flows through a flow cell to induce emission of secondary x-rays, gamma rays or light, respectively, characteristic of the heavy metal contaminants and constituents representative of the solids contents of the slurry. These characteristic energies are measured and used to determine the concentration in ppm of the residual heavy metal contaminants in the particulate material within the slurry.

3. 发明授权

US5133901A System and method for on-line monitoring and control of heavy metal contamination in soil washing process 失效
标题翻译：土壤清洗过程中重金属污染的在线监测与控制系统及方法
公开(公告)号：US5133901A
公开(公告)日：1992-07-28
申请号：US663962
申请日：1991-03-01
申请人： Steven H. Peterson , Edward J. Lahoda , David C. Grant , Edward F. Sverdrup , Thomas V. Congedo , John Bartko , Robert E. Witkowski , Arthur L. Wolfe , William D. Partlow , Michael C. Skriba
发明人： Steven H. Peterson , Edward J. Lahoda , David C. Grant , Edward F. Sverdrup , Thomas V. Congedo , John Bartko , Robert E. Witkowski , Arthur L. Wolfe , William D. Partlow , Michael C. Skriba
IPC分类号： G01N21/71 , G01N21/85 , G01N23/12
CPC分类号： G01N23/12 , G01N21/718 , G01N21/85 , Y10S588/90
摘要： The concentrations of residual heavy metal contaminants in the particulate material in a slurry produced in a particulate material washing process are monitored on-line and can be used to control the washing process. In alternative embodiments of the invention, x-rays, thermal neutrons or laser beams are directed at the slurry as it flows through a flow cell to induce emission of secondary x-rays, gamma rays or light, respectively, characteristic of the heavy metal contaminants and constituents representative of the solids contents of the slurry. These characteristic energies are measured and used to determine the concentration in ppm of the residual heavy metal contaminants in the particulate material within the slurry.
摘要翻译：在颗粒材料洗涤过程中生产的浆料中的颗粒材料中的残余重金属污染物的浓度在线监测并可用于控制洗涤过程。在本发明的替代实施例中，X射线，热中子或激光束在浆液流过流动池时被引导以分别引发重金属污染物特征的二次x射线，γ射线或光的发射以及代表浆料的固体含量的成分。这些特征能量被测量并用于确定浆料内颗粒材料中残余重金属污染物的浓度ppm。

4. 发明授权

US5330658A Solution decontamination method using precipitation and flocculation techniques 失效
标题翻译：溶液去污方法采用沉淀和絮凝技术
公开(公告)号：US5330658A
公开(公告)日：1994-07-19
申请号：US32362
申请日：1993-03-17
申请人： David C. Grant , Edward J. Lahoda , Ching-Yu Lin , Francis Talko
发明人： David C. Grant , Edward J. Lahoda , Ching-Yu Lin , Francis Talko
IPC分类号： B01D21/01 , C02F1/52 , C02F1/62 , C02F1/66 , C02F1/70 , C02F1/72 , C02F9/00 , C02F1/56
CPC分类号： C02F9/00 , C02F1/5236 , C02F1/66 , C02F1/70 , C02F1/72 , C02F2101/006 , C02F2101/20 , C02F2103/06 , Y10S210/912 , Y10S210/913 , Y10S210/914
摘要： Solutions such as for example groundwater, drinking water, extracting solutions and effluents contaminated with metals, radioactive species and organics, singly or in combination, are treated by first removing undesirable oxidizing agents from the contaminated solution. Then the contaminated solution is separately treated with aqueous solutions of ferrous sulfate and hydroxide, which precipitate substantially all of the contaminants. Next, the precipitate is treated with a flocculant and/or a coagulant to form an easily dewaterable and separable solid. The solid contaminants are readily removed from the cleansed solution. The process utilizes a novel combination of steps which maximizes contaminant removal, minimizes waste volume, and produces a recyclable solution and a manageable waste stream. The preferred hydroxide solutions are sodium hydroxide, calcium hydroxide, and ammonium hydroxide.
摘要翻译：通过首先从受污染的溶液中除去不需要的氧化剂，来处理诸如地下水，饮用水，被金属污染的提取液和废水，放射性物质和有机物的单独或组合的解决方案。然后将污染的溶液用硫酸亚铁和氢氧化物的水溶液分开处理，这些溶液基本上沉淀出所有的污染物。接下来，用絮凝剂和/或凝结剂处理沉淀物以形成易于脱水和可分离的固体。固体污染物容易从清洁溶液中除去。该方法采用了新的组合步骤，使污染物去除最大化，最大限度地减少废物体积，并产生可循环利用的溶液和可管理的废物流。优选的氢氧化物溶液是氢氧化钠，氢氧化钙和氢氧化铵。

5. 发明授权

US5436384A Process for the remediation of contaminated particulate material 失效
标题翻译：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。

6. 发明授权

US5370827A Solution decontamination method using precipitation techniques 失效
标题翻译：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。

7. 发明授权

US5268128A Method and apparatus for cleaning contaminated particulate material 失效
标题翻译：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。

8. 发明授权

US5324433A In-situ restoration of contaminated soils and groundwater 失效
标题翻译：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。

9. 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。

10. 发明授权

US5266494A Bench scale treatability method for evaluation of soil washing 失效
标题翻译：用于土壤清洗评估的台秤可处理性方法
公开(公告)号：US5266494A
公开(公告)日：1993-11-30
申请号：US648674
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 , G01N33/24 , G21F9/00
CPC分类号： G01N33/24 , B09C1/02 , Y10T436/25375
摘要： A process for determining the suitability of soil washing for various types of soils, sludges and other solids is disclosed. The process may be applied to relatively small soil samples which have been contaminated in order to determine the suitability and economics for treating the tested soil using a full-scale soil washing process. The process involves the steps of identifying the contaminated particle size ranges contained in the soil sample, identifying an effective extractant for removing the contaminant of interest, and identifying an effective leachate treatment approach for the particular soil sample of interest.
摘要翻译：公开了一种用于确定各种类型的土壤，淤泥和其它固体的土壤清洗适用性的方法。该方法可以应用于已被污染的相对较小的土壤样品，以便确定使用全面的土壤清洗方法处理被测土壤的适用性和经济性。该方法包括鉴定土壤样品中含有的污染粒度范围的步骤，鉴定用于去除感兴趣污染物的有效提取剂，以及鉴定所感兴趣的特定土壤样品的有效渗滤液处理方法。

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