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11 条记录 (耗时 0.021 秒)

    Fixation and stabilization of metals in contaminated soils and materials
    1.
    发明授权
    Fixation and stabilization of metals in contaminated soils and materials 失效
    污染土壤和材料中金属的固定和稳定

    公开(公告)号：US5916123A

    公开(公告)日：1999-06-29

    申请号：US942803

    申请日：1997-10-02

    申请人： Dhiraj Pal ,  Karl W. Yost

    发明人： Dhiraj Pal ,  Karl W. Yost

    IPC分类号： A62D3/00 ,  A62D3/33 ,  A62D101/24 ,  A62D101/43 ,  B09B3/00 ,  B09C1/08 ,  C02F11/00 ,  C04B28/34 ,  G21F9/30 ,  E02D3/00 ,  G21F9/00

    CPC分类号： G21F9/304 ,  A62D3/33 ,  B09B3/0041 ,  B09C1/08 ,  C02F11/008 ,  C04B18/0472 ,  C04B28/04 ,  C04B28/10 ,  C04B28/14 ,  C04B28/34 ,  G21F9/302 ,  A62D2101/24 ,  A62D2101/43 ,  C02F2101/006 ,  C02F2101/20 ,  C04B2111/00767 ,  Y02W30/58 ,  Y02W30/91

    摘要： The present invention discloses a method of treating lead bearing process materials and lead toxic hazardous wastes. The invention relates to treatment methods employed to chemically convert leachable lead in lead bearing solid and liquid waste materials to a non-leachable form by mixing the material with lime, gypsum and/or phosphoric acid. The solid and liquid waste materials include contaminated sludges, slurries, soils, wastewaters, spent carbon, sand, wire chips, plastic fluff, cracked battery casings, bird and buck shots and tetraethyl lead contaminated organic peat and muck. The present invention discloses a process comprising a single step mixing of one or more treatment additives, and a process comprising a two step mixing wherein the sequence of performing the steps may be reversible. The present invention provides a new way of treating a universe of lead contaminated materials at any pH.

    摘要翻译： 本发明公开了一种处理含铅工艺材料和铅有毒危险废物的方法。 本发明涉及用于通过将材料与石灰，石膏和/或磷酸混合来将含铅固体和液体废料中的可浸出铅化学转化为不可浸出形式的处理方法。 固体和液体废物包括污染的污泥，泥浆，土壤，废水，废碳，砂，线屑，塑料绒毛，破裂的电池外壳，鸟和屁股和四乙基铅污染的有机泥炭和泥渣。 本发明公开了一种包括一个或多个处理添加剂的单步混合的方法和包括两步混合的方法，其中执行步骤的顺序可以是可逆的。 本发明提供了在任何pH下处理铅污染物质的全新方法。

    Fixation and stabilization of metals in contaminated soils and materials
    5.
    发明授权
    Fixation and stabilization of metals in contaminated soils and materials 失效
    污染土壤和材料中金属的固定和稳定

    公开(公告)号：US6139485A

    公开(公告)日：2000-10-31

    申请号：US340903

    申请日：1999-06-28

    申请人： Dhiraj Pal ,  Karl W. Yost

    发明人： Dhiraj Pal ,  Karl W. Yost

    IPC分类号： A62D3/00 ,  A62D3/33 ,  A62D101/24 ,  A62D101/43 ,  B09B3/00 ,  B09C1/08 ,  C02F11/00 ,  C04B28/34 ,  G21F9/30 ,  E02D3/00

    CPC分类号： G21F9/304 ,  A62D3/33 ,  B09B3/0041 ,  B09C1/08 ,  C02F11/008 ,  C04B18/0472 ,  C04B28/04 ,  C04B28/10 ,  C04B28/14 ,  C04B28/34 ,  G21F9/302 ,  A62D2101/24 ,  A62D2101/43 ,  C02F2101/006 ,  C02F2101/20 ,  C04B2111/00767 ,  Y02W30/58 ,  Y02W30/91

    摘要： The present invention discloses a method of treating lead-bearing soils, waste materials and waste material matrixes. The invention relates to treatment methods employed to chemically convert leachable lead in lead-bearing solid and/or liquid waste materials to a non-leachable form by contacting or mixing the material with a chemical reagent that includes a first component which supplies sulphates, halides, halites, silicates or calcium oxide and a second component which supplies a phosphate anion in solution form. The solid and liquid waste materials include contaminated sludges, slurries, soils, wastewaters, spent carbon, sand, wire chips, plastic fluff, cracked battery casings, bird and buck shots and construction debris. The present invention discloses a process comprising a single step mixing lead-bearing hazardous waste with a chemical reagent. The present invention provides a new way of treating a universe of lead-bearing contaminated materials at any pH.

    摘要翻译： 本发明公开了一种处理含铅土，废料和废料基质的方法。 本发明涉及用于将含铅固体和/或液体废物中的可浸出铅化学转化为不可浸出形式的处理方法，其通过使材料与化学试剂接触或混合，所述化学试剂包括提供硫酸盐，卤化物， 卤化物，硅酸盐或氧化钙，以及以溶液形式提供磷酸盐阴离子的第二种组分。 固体和液体废物包括污染的污泥，泥浆，土壤，废水，废碳，沙子，线芯片，塑料绒毛，破裂的电池外壳，鸟和屁股和建筑垃圾。 本发明公开了一种包括将含铅危险废物与化学试剂单步混合的方法。 本发明提供了在任何pH下处理含铅污染物质的全新方法。

    Fixation and stabilization of metals in contaminated materials
    6.
    发明授权
    Fixation and stabilization of metals in contaminated materials 失效
    污染材料中金属的固定和稳定

    公开(公告)号：US5569155A

    公开(公告)日：1996-10-29

    申请号：US440565

    申请日：1995-05-12

    申请人： Dhiraj Pal ,  Karl W. Yost

    发明人： Dhiraj Pal ,  Karl W. Yost

    IPC分类号： A62D3/00 ,  A62D3/33 ,  A62D101/24 ,  A62D101/43 ,  B09B3/00 ,  B09C1/08 ,  C02F11/00 ,  C04B28/34 ,  G21F9/30

    CPC分类号： A62D3/33 ,  B09B3/0041 ,  B09C1/08 ,  C02F11/008 ,  C04B28/34 ,  G21F9/302 ,  G21F9/304 ,  A62D2101/24 ,  A62D2101/43 ,  C02F2101/006 ,  C02F2101/20 ,  Y02W30/91

    摘要： The present invention discloses a method of treating lead bearing process materials and lead toxic hazardous wastes. The invention relates to treatment methods employed to chemically convert leachable lead in lead bearing solid and liquid waste materials to a non-leachable form by mixing the material with lime, gypsum and/or phosphoric acid. The solid and liquid waste materials include contaminated sludges, slurries, soils, wastewaters, spent carbon, sand, wire chips, plastic fluff, cracked battery casings, bird and buck shots and tetraethyl lead contaminated organic peat and muck. The present invention discloses a process comprising a single step mixing of one or more treatment additives, and a process comprising a two step mixing wherein the sequence of performing the steps may be reversible. The present invention provides a new way of treating a universe of lead contaminated materials at any pH.

    摘要翻译： 本发明公开了一种处理含铅工艺材料和铅有毒危险废物的方法。 本发明涉及用于通过将材料与石灰，石膏和/或磷酸混合来将含铅固体和液体废料中的可浸出铅化学转化为不可浸出形式的处理方法。 固体和液体废物包括污染的污泥，泥浆，土壤，废水，废碳，砂，线屑，塑料绒毛，破裂的电池外壳，鸟和屁股和四乙基铅污染的有机泥炭和泥渣。 本发明公开了一种包括一个或多个处理添加剂的单步混合的方法和包括两步混合的方法，其中执行步骤的顺序可以是可逆的。 本发明提供了在任何pH下处理铅污染物质的全新方法。

    Fixation and stabilization of metals in contaminated soils and materials
    8.
    发明授权
    Fixation and stabilization of metals in contaminated soils and materials 失效
    污染土壤和材料中金属的固定和稳定

    公开(公告)号：US06258018B1

    公开(公告)日：2001-07-10

    申请号：US09340898

    申请日：1999-06-28

    申请人： Dhiraj Pal ,  Karl W. Yost ,  Steven A. Chisick

    发明人： Dhiraj Pal ,  Karl W. Yost ,  Steven A. Chisick

    IPC分类号： A62D300

    CPC分类号： G21F9/304 ,  B09B3/0041 ,  B09C1/08 ,  C02F11/008 ,  C02F2101/006 ,  C02F2101/20 ,  C04B18/0472 ,  C04B28/04 ,  C04B28/10 ,  C04B28/14 ,  C04B28/34 ,  C04B2111/00767 ,  E02D3/00 ,  G21F9/302 ,  Y02W30/58 ,  Y02W30/91 ,  C04B22/165 ,  C04B22/143

    摘要： The present invention discloses a method of treating heavy metal bearing process materials and heavy metal toxic hazardous wastes. The invention relates to treatment methods employed to chemically convert leachable heavy metals in heavy metal bearing solid and/or liquid waste materials to a non-leachable form by contacting or mixing the material with a chemical suspension which includes a first component which supplies sulphates, halides, halites, silicates or calcium oxide and a second component which supplies a phosphate anion. The solid and liquid waste materials include contaminated sludges, slurries, soils, wastewaters, spent carbon, sand, wire chips, plastic fluff, cracked battery casings, bird and buck shots and construction debris. The present invention discloses a process comprising a single step contacting of a hazardous waste with a two or three component chemical suspension. The present invention provides a new way of treating a universe of heavy metal contaminated materials at any pH.

    摘要翻译： 本发明公开了一种处理重金属负载工艺材料和重金属有毒有害废物的方法。 本发明涉及用于将含重金属的固体和/或液体废物中的可浸出重金属化学转化成不可浸出形式的处理方法，其通过使材料与化学悬浮液接触或混合，所述化学悬浮液包括提供硫酸盐，卤化物的第一组分 卤石，硅酸盐或氧化钙，以及提供磷酸盐阴离子的第二组分。 固体和液体废物包括污染的污泥，泥浆，土壤，废水，废碳，沙子，线芯片，塑料绒毛，破裂的电池外壳，鸟和屁股和建筑垃圾。 本发明公开了一种方法，其包括危险废物与两种或三种组分化学悬浮液的单步接触。 本发明提供了在任何pH下处理重金属污染物质的全新方法。

    Fixation and stabilization of chromium in contaminated materials
    10.
    发明授权
    Fixation and stabilization of chromium in contaminated materials 失效
    污染物中铬的固定和稳定

    公开(公告)号：US5397478A

    公开(公告)日：1995-03-14

    申请号：US106208

    申请日：1993-08-13

    申请人： Dhiraj Pal ,  Karl W. Yost

    发明人： Dhiraj Pal ,  Karl W. Yost

    IPC分类号： A62D3/00 ,  B09C1/08 ,  C02F1/70 ,  C02F9/00 ,  C02F1/62

    CPC分类号： C02F1/70 ,  B09C1/08 ,  C02F2101/22 ,  Y10S210/913

    摘要： A highly flexible multi-step treatment technology for chemical fixation and stabilization of leachable chromium, particularly hexavalent chrome, in contaminated soils, solid wastes, concrete, sludge, sand and gravel and waste waters is disclosed. The process comprises reducing hexavalent chromium to chromous (Cr.sup.2+) and chromic (Cr.sup.3+) forms in the presence of water under alkaline conditions and fixing the reduced chromium forms with phosphate.The process reduces Toxicity Characteristic Leaching Procedure chromium levels below the regulatory threshold of 5 mg/l as required by the USEPA.

    摘要翻译： 公开了一种在污染土壤，固体废物，混凝土，污泥，沙子和砾石和废水中化学固化和稳定可浸出铬，特别是六价铬的高度灵活的多步骤处理技术。 该方法包括在碱性条件下在水存在下将六价铬还原为铬（Cr2 +）和铬（Cr3 +）形式，并用磷酸盐固定还原的铬形式。 该过程减少毒性特征浸出程度铬水平低于USEPA要求的5 mg / l的监管阈值。