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公开(公告)号：US5610065A
公开(公告)日：1997-03-11
申请号：US402421
申请日：1995-03-10
申请人： Robert L. Kelley , Andy H. Hill , Vipul J. Srivastava , W. Kennedy Gauger , John J. Kilbane, II
发明人： Robert L. Kelley , Andy H. Hill , Vipul J. Srivastava , W. Kennedy Gauger , John J. Kilbane, II
摘要： A process for improved remediation of polynuclear aromatic hydrocarbon and/or polychlorinated hydrocarbon contaminated solid materials by integrated chemical/biological treatment comprising contacting the polynuclear aromatic hydrocarbon and/or polychlorinated hydrocarbon for chemical treatment with hydrogen peroxide in the presence of ferrous ion in liquid solution at a temperature of about 10.degree. C. to about 100.degree. C., oxidizing the polynuclear aromatic hydrocarbon materials and/or polychlorinated hydrocarbon materials and producing more readily biodegradable hydrocarbon product materials, and then biodigesting the product materials by aerobic and/or anaerobic biodigestion. A lower alcohol added to the chemical treatment in accordance with one embodiment further enhances oxidation of 4- to 6-ring aromatic hydrocarbon contaminants.
摘要翻译： 一种用于通过综合化学/生物处理改进多核芳烃和/或多氯烃污染的固体物质的修复的方法，包括在亚铁离子存在下在液体溶液中使多核芳烃和/或多氯代烃与过氧化氢接触以进行化学处理 温度约10℃至约100℃，氧化多核芳烃材料和/或多氯烃材料并生产更容易生物降解的烃产品材料，然后通过有氧和/或厌氧生物消化生物消化产物材料。 根据一个实施方案添加到化学处理中的低级醇进一步增强4-至6-环芳族烃污染物的氧化。
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公开(公告)号：US5955350A
公开(公告)日：1999-09-21
申请号：US800134
申请日：1997-02-13
IPC分类号： A62D3/00 , A62D3/02 , B09C1/02 , B09C1/08 , B09C1/10 , C02F1/72 , C02F3/34 , C02F11/02 , C12P1/04 , D06M16/00
摘要： A process for remediation of contaminated solid materials comprising polynuclear aromatic hydrocarbon contaminated solid materials, polychlorinated hydrocarbon contaminated materials, and mixtures thereof by sequential biological/chemical/biological treatment in which the contaminated solid materials are biodigested under suitable conditions by a first aerobic or anaerobic digestion, producing a first biodigestion product. The first biodigestion product is then contacted for chemical treatment with hydrogen peroxide in the presence of ferrous ion in amounts and under conditions suitable for chemical oxidation, forming a mixture and oxidizing the first biodigestion product, producing biodegradable hydrocarbon product materials having enhanced biodegradability. The product materials are then biodigested under suitable conditions by a second aerobic or anaerobic digestion.
摘要翻译： 通过连续的生物/化学/生物处理，通过第一次有氧或厌氧消化在合适的条件下将污染的固体物质生物消化，来修复受污染的固体物质的方法，包括多核芳烃污染的固体物质，多氯化烃污染物质及其混合物 生产第一种生物消化产品。 然后在适量的化学氧化条件下形成混合物并氧化第一生物消化产物，生产可生物降解的碳氢化合物产品，具有增强的生物降解能力，然后将第一种生物消化产品与过氧化氢在亚铁离子存在下接触进行化学处理。 然后通过第二次有氧或厌氧消化，在合适的条件下将产品材料进行生物消毒。
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公开(公告)号：US4735724A
公开(公告)日：1988-04-05
申请号：US891651
申请日：1986-07-30
IPC分类号： C02F3/28
CPC分类号： C02F3/28 , C12M21/04 , Y02E50/343
摘要： A non-mixed vertical tower anaerobic digester and anaerobic digestion process provides passive concentration of biodegradable feed solids and microorganisms in an upper portion of a continuous digester volume and effluent withdrawal from the middle to bottom portion of the digester, resulting in increased solids retention times, reduced hydraulic retention times, and enhanced bioconversion efficiency. In addition, due to passive concentration of solids, the non-mixed anaerobic digester accommodates high solids loadings and provides separation of microbial phases within the continuous digester volume to achieve substantially complete bioconversion of biodegradable feedstock components.
摘要翻译： 非混合立式塔式厌氧消化器和厌氧消化过程在连续蒸煮器体积的上部提供可生物降解的饲料固体和微生物的被动浓缩，并且从消化器的中部到底部部分的流出物退出，导致增加的固体保留时间， 减少水力停留时间，提高生物转化效率。 此外，由于固体的被动浓缩，非混合厌氧消化器适应高固体负荷，并提供在连续蒸煮器体积内的微生物相分离，以实现可生物降解的原料组分的基本上完全的生物转化。
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公开(公告)号：US06591702B2
公开(公告)日：2003-07-15
申请号：US10005310
申请日：2001-12-03
IPC分类号： G01N3300
CPC分类号： G01N33/24 , G01N1/2294 , G01N7/14 , G01N2001/021
摘要： A method for identifying and characterizing contaminated sources in a site having contaminated soils and sediments in which vapor pressure is measured at a plurality of subsurface soil sampling locations of the site, which measurements are then mapped, resulting in generation of a subsurface vapor pressure map. Contaminant mobility at the subsurface soil sampling locations having a peak vapor pressure is then determined and contaminants in fast release compartments and slow release compartments in the contaminated soils and sediments identified. Thereafter, the fraction of contaminants in the fast release compartments and the slow release compartments is determined. Calibration of the contaminant-specific vapor pressure with laboratory measurements of the rapid release fraction at each site allows a meaningful and rapid estimation of the spatial location and mass distribution of source areas.
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公开(公告)号：US06945734B1
公开(公告)日：2005-09-20
申请号：US10801185
申请日：2004-03-16
摘要： A method for in-situ dense non-aqueous phase liquids treatment in which a subsurface source area comprising at least one rapid release contaminant is located and free water removed therefrom. The subsurface source area is then heated to a temperature suitable for extracting the at least one rapid release contaminant from the subsurface source area. The at least one rapid release contaminant is extracted from the subsurface source area, resulting in solidification of the dense non-aqueous phase liquids remaining in the subsurface source area.
摘要翻译： 一种用于原位致密非水相液体处理的方法，其中包含至少一种快速释放污染物的地下源区域被定位，并且从其中除去游离水。 然后将地下源区域加热到适于从地下源区域提取至少一种快速释放污染物的温度。 从地下源区域提取至少一种快速释放污染物，导致残留在地下源区域中的致密非水相液体的固化。
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公开(公告)号：US5500123A
公开(公告)日：1996-03-19
申请号：US336332
申请日：1994-11-08
申请人： Vipul J. Srivastava
发明人： Vipul J. Srivastava
IPC分类号： C02F3/28
CPC分类号： C02F3/286 , C02F3/28 , C12M21/04 , C12M23/36 , C12M23/58 , C12M29/02 , C12M29/24 , C12M29/26 , C12M45/04 , C12M47/18 , Y02E50/343 , Y02W10/37
摘要： A process for improved methane production by two-phase anaerobic digestion of organic carbonaceous material in which organic carbonaceous material is fermented under anaerobic conditions in an acid phase digester, forming a liquid/solids effluent, the liquid/solids effluent is fermented under anaerobic conditions in a methane phase digester, product gas comprising methane is withdrawn from the methane phase digester, and oxygen is introduced into the methane phase digester. In a preferred embodiment, the methane phase liquid effluent is passed through a CO.sub.2 stripper resulting in stripping of CO.sub.2 and H.sub.2 S from the methane phase liquid effluent. The resulting stripper liquid effluent comprising dissolved oxygen is then recycled back to the methane phase digester.
摘要翻译： 通过有机碳质材料的两相厌氧消化改进甲烷生产的方法，其中有机碳质材料在酸性相消化器中在厌氧条件下发酵，形成液体/固体流出物，液体/固体流出物在厌氧条件下发酵 甲烷相消化器，从甲烷相消化器排出包含甲烷的产物气体，将氧气引入甲烷相消化器。 在优选的实施方案中，甲烷相液体流出物通过CO 2汽提器，导致从甲烷相液体流出物中汽提CO 2和H 2 S. 所得到的包含溶解氧的汽提液体流出物再循环回到甲烷相消化器。
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