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公开(公告)号：US5397482A
公开(公告)日：1995-03-14
申请号：US100908
申请日：1993-08-03
CPC分类号： C02F1/722 , C01B15/06 , C02F2101/18 , Y10S210/904
摘要： A process for treating effluents, such as precious metal tailings, having a pH of at least 9 and containing cyanide is described in which Caro's acid is added to the effluent having a pH of at least 9 and commencing the reaction of the cyanide with Caro's acid at 0.degree. C. to 80.degree. C. in the absence of an added alkali; adding sufficient Caro's acid within a mole ratio of Caro's acid to cyanide of 0.3/1 to 3/1 to reduce the pH of the effluent to below 9, continuing the reaction between Caro's acid and the cyanide to reduce the amount of cyanide remaining in the effluent and to recover an environmentally compatible effluent reduced in amounts of cyanide.
摘要翻译： 描述了一种用于处理pH至少为9并含有氰化物的废水（例如贵金属尾渣）的方法，其中将Caro酸加入pH至少为9的流出物中，并开始氰化物与Caro酸的反应 在0℃至80℃下不加入碱; 在Caro酸与氰化物的摩尔比为0.3 / 1至3/1中加入足够的Caro酸以将流出液的pH值降至9以下，继续Caro酸和氰化物之间的反应，以减少残留在氰化物中的氰化物的量 并回收环境友好的流出物，氰化物的量减少。
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公开(公告)号：US5879653A
公开(公告)日：1999-03-09
申请号：US963745
申请日：1997-11-04
IPC分类号： C01B15/06
CPC分类号： C01B15/06 , Y10S210/904
摘要： A process for reducing or eliminating Caro's acid mist, created when producing a hot mixture containing Caro's acid by reaction of sulfuric acid and hydrogen peroxide, is carried out by quenching the hot Caro's acid mixture with water to both cool and dilute the Caro's acid.
摘要翻译： 通过用硫酸和过氧化氢反应制备含有卡罗酸的热混合物时产生的Caro酸雾的方法是通过用水淬灭热的Caro's酸混合物进行冷却和稀释Caro酸。
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公开(公告)号：US6090297A
公开(公告)日：2000-07-18
申请号：US903180
申请日：1997-07-30
CPC分类号： C01B15/06 , Y10S210/904
摘要： A process for treating precious metal tailing slurries with Caro's acid, in which the Caro's acid is accompanied by reduced amounts of Caro's acid mist, is disclosed. The hot Caro's acid-containing mixture, formed by reaction of concentrated sulfuric acid and hydrogen peroxide, is quenched with water to reduce or eliminate the Caro's acid mist. The resulting cooled and diluted mixture is introduced into a precious metal tailings slurry to reduce the amount of cyanide values in the slurry.
摘要翻译： 公开了一种用Caro酸处理贵金属尾矿浆料的方法，其中Caro酸伴随着Caro酸雾的减少。 通过浓硫酸和过氧化氢反应形成的热Caro含酸混合物用水淬灭以减少或消除Caro的酸雾。 将所得的冷却和稀释的混合物引入贵金属尾矿浆料中以减少浆料中氰化物的量。
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公开(公告)号：US5030359A
公开(公告)日：1991-07-09
申请号：US610667
申请日：1990-11-08
摘要： Fats and proteins in wastewater are commonly concentrated in a dissolved air flotation cell as a sludge ("skimmings") which has a very high water content, even after centrifuging or the like. A process is provided to reduce the water content of the sludge thereby reducing the cost of disposal of the sludge.
摘要翻译： 废水中的脂肪和蛋白质通常在溶解气浮池中作为污泥（“脱脂”）集中，其具有非常高的含水量，即使在离心等之后。 提供了一种降低污泥含水量的方法，从而降低了污泥的处理成本。
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5.发明授权
公开(公告)号：US4430454A
公开(公告)日：1984-02-07
申请号：US493110
申请日：1983-05-09
CPC分类号： C08G18/4236 , C08G18/6258 , C08G2101/0008 , C08G2101/0016 , C08G2101/0025 , C08G2101/005 , C08G2101/0058
摘要： Polymeric foam compositions, useful as insulating material are obtained from the reaction of polymaleic anhydride with a hydroxyl-containing compound like ethylene glycol or its derivatives, in the presence of an organic isocyanate. Hydroxyl-containing compounds suitable for reaction with polymaleic anhydride include C.sub.2 -C.sub.10 diols, C.sub.3 -C.sub.6 trilos, C.sub.4 -C.sub.5 tetraols and their derivatives.
摘要翻译： 可用作绝缘材料的聚合物泡沫组合物由聚马来酸酐与含羟基化合物如乙二醇或其衍生物在有机异氰酸酯存在下的反应获得。 适用于与聚马来酸酐反应的含羟基化合物包括C2-C10二醇，C3-C6三元醇，C4-C5四醇及其衍生物。
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6.发明授权In situ gas scrubbing method and system for odor and corrosion control in wastewater collection systems 有权废水收集系统中气体和腐蚀控制的原位气体洗涤方法和系统公开(公告)号：US06365099B1
公开(公告)日：2002-04-02
申请号：US09190532
申请日：1998-11-12
IPC分类号： A61L914
CPC分类号： A61L9/145 , A61L2209/22 , B01D53/52
摘要： A process and system for reducing the concentration of odorous contaminants, primarily hydrogen sulfide, in the vapor spaces of sewage handling and treatment systems, primarily the vapor spaces of sewage trunk lines, by injecting a fine spray, mist or fog of a dilute solution of hydrogen peroxide and a base selected from a group consisting of sodium hydroxide, potassium hydroxide, ammonium hydroxide and sodium carbonate to mix intimately with the vapor flow. The peroxide and base solutions may be pre-mixed and diluted with water and injected through atomizing nozzles utilizing compressed air as an atomizing fluid. The system may also provide for separate storage of the peroxide and base solutions, mixing of the peroxide and base solutions with dilution water with in-line mixing devices and direct injection with or without compressed air atomization into the vapor space. Sewage trunk lines, in particular, are treated at a substantial distance upstream of the sewage treatment facility to allow for adequate reaction time to reduce the concentration of the contaminant and reduce loading and corrosion on sewage treatment and foul air handling and scrubbing equipment.
摘要翻译： 一种用于减少污水处理和处理系统的蒸汽空间中的恶臭污染物（主要是硫化氢）的浓度的过程和系统，主要是污水干线的蒸汽空间，通过注入稀释溶液的细喷雾，雾或雾 过氧化氢和选自氢氧化钠，氢氧化钾，氢氧化铵和碳酸钠的碱的碱，与蒸汽流密切混合。 过氧化物和碱溶液可以预先混合并用水稀释，并通过雾化喷嘴利用压缩空气作为雾化流体注入。 该系统还可以提供过氧化物和碱溶液的单独储存，将过氧化物和碱溶液与具有在线混合装置的稀释水混合，并在压缩空气雾化或无压缩空气雾化的情况下直接注入蒸气空间。 特别是污水干线在污水处理设施的上游相当远的距离处理，以允许足够的反应时间来减少污染物的浓度，并减少污水处理和污浊空气处理和洗涤设备的负荷和腐蚀。
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公开(公告)号：US4935391A
公开(公告)日：1990-06-19
申请号：US331423
申请日：1989-03-31
CPC分类号： D21H19/40 , B01J37/038 , B01J37/12 , C09C1/42 , D21H17/68 , C01P2006/60
摘要： A process is provided for purifying finely divided minerals contacting organic material sufficiently to make the minerals useful for coating a filling paper or for use as catalysts, catalyst supports or the like. The process comprises concomitantly contacting an aqueous slurry of the mineral with a peroxygen and a gas containing ozone at a pH from 5 to 12. Preferably, the peroxygen is incorporated into the slurry prior to contacting the slurry with a gas containing ozone. Optionally, the slurry may be pretreated with a chelating agent or subsequently bleached with a reducing agent.
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公开(公告)号：US4367212A
公开(公告)日：1983-01-04
申请号：US210697
申请日：1980-11-28
申请人： Harry M. Castrantas
发明人： Harry M. Castrantas
CPC分类号： C01B17/05 , B01D53/1412 , B01D53/1418 , B01D53/1468 , B01D53/52 , C10K1/128
摘要： A method for controlling the concentration of dissolved thiosulfate byproduct which forms in a wet desulfurization process, by introducing a peroxygen chemical into its recirculating aqueous absorption medium. A peroxygen chemical such as aqueous hydrogen peroxide is introduced into the recirculating aqueous alkaline absorption medium, preferably after its regeneration, in an amount sufficient to maintain the concentration of thiosulfate byproduct below a saturation concentration. The method is applicable to cyclic wet desulfurization processes, used to recover elemental sulfur from H.sub.2 S-containing gas streams, in which the absorption medium contains a regenerable oxidizing agent and is subject to thiosulfate byproduct buildup.
摘要翻译： 通过将过氧化学物质引入其再循环的水性吸收介质中来控制在湿式脱硫工艺中形成的溶解的硫代硫酸盐副产物的浓度的方法。 将过氧化学物质如过氧化氢水溶液引入循环水性碱性吸收介质中，优选在其再生之后，其量足以将硫代硫酸盐副产物的浓度保持在饱和浓度以下。 该方法适用于循环湿式脱硫工艺，用于从含H2S的气流中回收元素硫，其中吸收介质含有可再生的氧化剂，并经受硫代硫酸盐副产物积累。
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公开(公告)号：US5137642A
公开(公告)日：1992-08-11
申请号：US823400
申请日：1992-01-21
CPC分类号： C02F1/722 , C02F1/683 , Y10S210/904
摘要： A process is provided for detoxifying an aqueous solution containing weak acid-dissociable cyanide metal complexes. The process comprises incorporating hydrogen peroxide and at least 1 mole of citric acid per mole of complexed metal ion and maintaining the pH of the solution between 8 and 12.
摘要翻译： 提供了一种使含有弱酸解离的氰化物金属络合物的水溶液解毒的方法。 该方法包括加入过氧化氢和每摩尔络合的金属离子至少1摩尔柠檬酸，并保持溶液的pH在8和12之间。
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公开(公告)号：US4574076A
公开(公告)日：1986-03-04
申请号：US738651
申请日：1976-11-04
申请人： Harry M. Castrantas
发明人： Harry M. Castrantas
IPC分类号： B01D53/52 , B01D53/14 , B01D53/44 , B01D53/77 , C01B5/00 , C01B17/16 , C01B32/50 , C01D5/00 , F03G7/04 , C01B31/20 , F03G7/02
CPC分类号： B01D53/1493 , B01D53/1468 , F03G7/04 , Y02E10/10 , Y10S423/19
摘要： A process for removing hydrogen sulfide from saturated steam is described whereby the steam and hydrogen sulfide entrained therein are contacted under conditions of turbulent flow with hydrogen peroxide. The effectiveness of the process is improved by simultaneously contacting the steam with a basic reagent such as sodium hydroxide.
摘要翻译： 描述了从饱和蒸汽中除去硫化氢的方法，其中夹杂在其中的蒸汽和硫化氢在湍流与过氧化氢的条件下接触。 通过同时使蒸汽与碱性试剂如氢氧化钠接触来提高该方法的有效性。
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