| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Method for stabilization of chromium | US11113517 | 2005-04-25 | US20050245783A1 | 2005-11-03 | Keith Forrester |
| This invention provides a method for stabilization of chromium subject to acid and water leaching tests or leach conditions by addition of solution, reducing, precipitating and stabilizing agents such that leaching of chromium is inhibited to desired levels. The resultant material or waste after stabilization is deemed suitable for on-site reuse, off-site reuse or disposal as RCRA non-hazardous waste. | ||||||
| 122 | In-container mineralization | US10972068 | 2004-10-22 | US20050096495A1 | 2005-05-05 | John Mason; Thomas Oliver |
| A method of waste stabilization by mineralization of waste material in situ in a treatment container suitable or treatment, transit, storage and disposal. The waste material may be mixed with mineralizing additives and, optionally, reducing additives, in the treatment container or in a separate mixing vessel. The mixture is then subjected to heat in the treatment container to heat-activate mineralization of the mixture and form a stable, mineralized, monolithic solid. This stabilized mass may then be transported in the same treatment container for storage and disposal. | ||||||
| 123 | Integrated fixation systems | US09646544 | 1999-05-06 | US06838504B1 | 2005-01-04 | William C Webster; Peter Hurley |
| The invention provides polymeric matrices and films comprising fixation reagents that are capable of reacting with solubilized metals to form less soluble metal compounds. The fixation reagenst may include inorganic sulfides and phosphates, as well as adsorbents. The polymeric matrices may be comprised of polyvinyl alcohols and polyvinyl acetates. In some embodiments, the polymeric matrix is selected to be at least as soluble as the selected fixation reagent, particularly under the conditions in which the matrix is expected to come into contact with the solublized metal. | ||||||
| 124 | Mixture for the treatment of waste materials | US10891878 | 2004-07-15 | US20040245178A1 | 2004-12-09 | Wolfgang Schwetlick |
| The invention relates to a mixture and a process for the treatment of waste materials and the use of the mixture for the treatment of waste materials and waste material treated therewith. The mixture comprises (A) at least one zinc salt of a saturated or unsaturated aliphatic or aromatic carboxylic acid, (B) at least one calcium salt of a saturated or unsaturated aliphatic or aromatic carboxylic acid, (C) at least one hydrophobing agent, (D) at least one amino alcohol and (E) NH3. | ||||||
| 125 | Mixture for the treatment of waste materials | US10048672 | 2002-06-12 | US06797049B1 | 2004-09-28 | Wolfgang Schwetlick |
| The invention relates to a mixture and a process for the treatment of waste materials and the use of the mixture for the treatment of waste materials and waste material treated therewith. The mixture comprises (A) at least one zinc salt of a saturated or unsaturated aliphatic or aromatic carboxylic acid, (B) at least one calcium salt of a saturated or unsaturated aliphatic or aromatic carboxylic acid, (C) at least one hydrophobing agent, (D) at least on amino alcohol and (E) NH3. | ||||||
| 126 | Treatment of chemical hydrolysates | US09632463 | 2000-08-04 | US06498281B1 | 2002-12-24 | Francis Stephen Lupton |
| A chemical munition hydrolysate treatment system pretreats agent hydrolysate with irradiation in the presence of an oxidant and processes the pre-treated chemical agent and energetic materials through a series of treatment processes until a preselected level of destruction is achieved. The treatment process includes a biological treatment of the aqueous wastestreams and catalytic oxidation of the air exhaust streams. | ||||||
| 127 | Stabilization of arsenic-contaminated materials | US09752225 | 2000-12-29 | US20010048852A1 | 2001-12-06 | Ajit K. Chowdhury; Lane D. Tickanen |
| A method for stabilizing arsenic in a waste matrix includes the steps of combining with the waste matrix an agent for controlling the oxidation-reduction potential of the matrix, an agent for controlling the pH of the matrix and an agent for adsorbing or coprecipitating the arsenic in the matrix. | ||||||
| 128 | Stabilization of arsenic-contaminated materials | US09099738 | 1998-06-18 | US06254312B1 | 2001-07-03 | Ajit K Chowdhury; Lane D Tickanen |
| A method for stabilizing arsenic in a waste matrix includes the steps of combining with the waste matrix an agent for controlling the oxidation-reduction potential of the matrix, an agent for controlling the pH of the matrix and an agent for adsorbing or coprecipitating the arsenic in the matrix. | ||||||
| 129 | Method and apparatus for tuning polychlorinated biphenyl to harmless | US373602 | 1999-08-13 | US6061383A | 2000-05-09 | Hideo Katayama |
| The present invention reduces generation of harmful substances through processing at lower cost for facilities and processing. According to the present invention, polychlorinated biphenyl and mixture of alumina oxide and silicon dioxide are mixed and emulsified in an ultrasonic emulsifier 2. The emulsified mixture is then charged into an electric resistance type melting furnace 5 and is melted at temperature of 1500.degree. C.-2000.degree. C. and is turned to glassy state. | ||||||
| 130 | Immobilization of thallium during electric arc furnace dust treatment | US80011 | 1998-05-15 | US6053857A | 2000-04-25 | John Y. Stevens |
| A method and a mixture for chemically stabilizing electric arc furnace dust (EAFD) containing thallium by entrapping the metals inherent in EAFD within a cementitiously hardened product from the mixture. The method includes using the pozzolanic characteristics of EAFD by forming a mixture of EAFD with sufficient water, ferrous sulfate, and Portland cement, then permitting the mixture to react to form a product having a decreased concentration of thallium in its leachate. The method may also include permitting the mixture to form a cementitiously hardened product. The composition of the present invention is the mixture of EAFD, water, ferrous sulfate, and Portland cement. Even immediately after forming the mixture and before hardening, the composition has acceptable leachate characteristics. The hardened product also has acceptable leachate concentrations. | ||||||
| 131 | Refrigerant disposal | US733187 | 1996-10-17 | US5997825A | 1999-12-07 | Sunita Satyapal; Tobias H. Sienel; H. Harvey Michels; James D. Freihaut |
| A system for the in situ destruction of compressible refrigerant from a refrigerant containing apparatus includes a refrigerant recovery apparatus (30) for receiving refrigerant from the refrigerant containing apparatus (20) and a refrigerant disposal apparatus (100) for destroying refrigerant received from the recovery apparatus. The disposal apparatus (100) includes a storage tank (110) for collecting refrigerant received from the recovery apparatus (30) and a reactor device (130) for receiving refrigerant collected in said storage tank and destroying the refrigerant received from the storage tank. The reactor device includes a reaction chamber (135) housing a replaceable reactor core (140) containing a reagent functional to chemically react with the received refrigerant. A heater device (138) is provided in operative association with the reaction chamber for heating the reactor core (140) to a desired temperature at which the reagent will most effectively react with the refrigerant. | ||||||
| 132 | Minimizing emission of hexavalent chromium from combustion sources | US868258 | 1997-06-03 | US5972301A | 1999-10-26 | William P. Linak; Jost O. L. Wendt |
| Formation of hexavalent chromium is reduced during incineration/combustion of materials containing hexavalent chromium by adding to the waste prior to or during combustion a small amount of sulfur. The sulfur can be added as elemental sulfur, as sulfur dioxide, or as high sulfur fuels or high sulfur waste. | ||||||
| 133 | Method and apparatus for treating waste and for obtaining usable by-product | US892519 | 1997-07-14 | US5886316A | 1999-03-23 | Charles L. Pierce |
| The present invention is directed to the art of treating waste using laser technology. Industrial and toxic waste materials are irradiated with a laser inside a spherical reactor chamber such that they are heated to high temperatures. Organic compounds are thermally destroyed and chemical bonds are broken. Cool oxygen is pumped into the reactor to provide a refractory protective shield. Silica is added into the vessel at the high temperatures and encapsulates any heavy metals into its crystal matrix. The resulting solidified product may have a hardness of at least 8 on the Knoops scale of hardness and may be used as tooling, road material, oven lining, building materials and the like. | ||||||
| 134 | Back-side illuminated organic pollutant removal system | US738148 | 1996-10-25 | US5865959A | 1999-02-02 | Richard A. Meinzer; Timothy N. Obee; Pamela J. Curbelo |
| Illumination of the back-side of a UV transparent medium significantly reduces the decomposition of organic pollutants to carbon dioxide while significantly increasing the amount of radiation available for catalysis of the organic pollutants by a photocatalytic semiconductor. The UV light illuminates the UV transparent medium such that the UV propagates through the medium, illuminating the back-side of a photocatalytic semiconductor coating on the front-side. The photocatalytic semiconductor dissociates water on its surface to form hydroxyl radicals which in turn oxidize organic pollutants. | ||||||
| 135 | Method for treating wastes | US854529 | 1997-05-12 | US5810920A | 1998-09-22 | Kenji Ueshima; Noboru Ikitsu; Takuji Nomura; Takashi Funahashi; Masakazu Uekita |
| To treat waste containing harmful metals such as lead, cadmium, mercury, chromium, copper, nickel, zinc, etc., the waste is mixed with a treating agent containing, as the essential constituent component, solid acid(s) and/or cement and additionally a caking inhibitor, kneaded with water where necessary, then solidified by curing. Harmful metals are thereby stabilized in the thus-solidified cakes and are not released therefrom. | ||||||
| 136 | Process for preparing enviromentally stable products by the remediation of contaminated sediments and soils | US772780 | 1996-12-24 | US5803894A | 1998-09-08 | Richard L. Kao; Sarabjit S. Randhava; Surjit S. Randhava; Michael C. Mensinger; Amirali G. Rehmat; Anthony L. Lee |
| This invention relates to thermo-chemical remediation and decontamination of sediments and soils contaminated with organic contaminants as well as inorganic materials with subsequent beneficial reuse. Novel environmentally stable products of commercial value are produced when certain additives such as calcium and metal oxides are mixed with the contaminated materials. In the process, the mixture is heated to 1150.degree. C..about.1500.degree. C. to produce a molten reaction product with at least part of an excess amount of oxygen mixture or air is continuously bubbled through the melt in order to provide mixing and achieve high thermal destruction and removal efficiencies of the organic contaminants. The melt is then quickly quenched in moist air, steam, or water to avoid the transformation of the amorphous material into crystals. The inorganic contaminants such as chromium, nickel, zinc, etc. are incorporated and completely immobilized within the amorphous silicate network. The amorphous material can be pulverized to yield a powder which evinces cementitious properties either by reaction with alkali solution or by blending it with other materials to produce blended cements. The compressive strengths of the concretes made from the powder of the subject invention and blends thereof are comparable to, or greater than the ASTM requirements for general purpose concrete applications. The powder of the subject invention, blended cements, and concrete/mortar derived therefrom also easily pass the EPA TCLP leach test to achieve environmental acceptability. | ||||||
| 137 | Composition and method to remove asbestos | US721863 | 1996-09-27 | US5753034A | 1998-05-19 | Jacob Block |
| A composition for transforming a chrysotile asbestos-containing material into a non-asbestos material is disclosed, wherein the composition comprises water, at least about 30% by weight of a hexafluorosilicate salt, and free of or having only small amounts of an inorganic acid, an inorganic acid salt or a mixture thereof. A method of transforming the asbestos-containing material into a non-asbestos material using the present composition also is disclosed. | ||||||
| 138 | Process and apparatus for photolytic degradation of explosives | US475520 | 1995-06-07 | US5524545A | 1996-06-11 | Paul L. Miller; Gary G. Wittmer; Mark D. Stignani |
| A process for photolytic degradation of the organic and nitrogenous components of high explosives in organic solvent is described. The process can be applied with a module photolytic apparatus so that munitions can be destroyed without endangering the environment or toxifying large quantities of water. An apparatus is also disclosed. | ||||||
| 139 | Method and apparatus for the controlled reduction of organic material | US188350 | 1993-09-01 | US5507927A | 1996-04-16 | Charles L. Emery |
| There is provided a new and useful method and apparatus for the controlled non-pyrolytic reduction of organic material comprising subjecting the material to microwave radiation in a reducing atmosphere. | ||||||
| 140 | Chemical disposal of halocarbons | US155357 | 1993-11-19 | US5416247A | 1995-05-16 | James L. Webster |
| Halogen-containing organic compounds are reacted with alkali metal or earth alkaline metal carbonate and/or oxide to convert the halogen component of the compound to halide of the metal, thus converting a liquid or gaseous compound to a solid halogen-containing compound for use or safe landfill disposal. | ||||||
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