[특허]Water treatment method and apparatus

Water treatment method and apparatus 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C02F-001/28
출원번호	US-0477501 (2000-01-04)
발명자 / 주소	Stephen R. Clarke Richard J. Clarke Roderick Murdock Clive J. Butler Sam Mohanta
출원인 / 주소	Luxfer Group Limited GB
대리인 / 주소	Watts Hoffman Fisher & Heinke
인용정보	피인용 횟수 : 22 인용 특허 : 39

초록 ▼

A media is used to remove species from aqueous solutions, particularly in the treatment of water to enable it to be suitable for drinking. The media includes a material selected from the group consisting of zirconium hydroxide, titanium hydroxide, hafnium hydroxide and combinations thereof. A preferred form of the media is a layer having an aspect ratio of at least 1:1, more preferably, at least about 10:1. Removed from the water are species selected from the group consisting of arsenate, selenate, chromate, borate, perchlorate, fluoride and combinations thereof. In particular arsenite (As+3) containing species are also removed from water. Arsenite may be removed from water to levels not greater than 10 parts per billion with a single exposure to the media. The media is selective for certain species over others. The arsenite component is removed despite a presence of at least one competing species selected from the group consisting of sulphate, phosphate, nitrate, bicarbonate, iron, carbonate, nitrite, silicate, sulphite, chloride, bromide and iodide. The media is preferably in powder form while used to treat water. The media may be employed in a variety of devices including cartridge type water filters and a filter press.

대표청구항 ▼

1. A method of treating an aqueous solution, comprising:passing the solution into contact with a layer of media having an aspect ratio of at least 1:1, wherein said media comprises a material selected from the group consisting of zirconium hydroxide, titanium hydroxide, hafnium hydroxide and combinations thereof; exposing said solution to said media effective to remove therefrom species comprising an As+3 component in nonionic form; and passing from said media said solution with said species removed.

이 특허에 인용된 특허 (39)

Takeuchi Tatsuro (Oumihachiman JPX) Masaki Sokukawa (Takatsuki JPX) Ryuzo Kimoto (Ibaraki JPX), Adsorbents comprising hydrated ferrites of Ti, Zr, and Sn and cured thermosetting resins.
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Matsuoka Terumi (Okayama JPX) Ohara Masahiro (Okayama JPX) Kawamura Izumi (Tamano JPX), Brine treatment method.
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Vermes Sheldon A. (Shorewood MN) Botts David M. (Spring Park MN), Ceramic filter.
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Shigetomi Yasumasa (5-32 ; 2-chome Tsushima-Minami ; Okayama JPX), Composite anion adsorbent and method for making same.
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Maglio Alfonse (River Edge NJ) Himpsl Francis L. (Freehold NJ) Russo Robert V. (Brooklyn NY), Composite ion-exchange material, preparation and use thereof.
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Archer Virgil L., Drinking water filter.
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Karbachsch Massoud (Gttingen DEX) Breitbach Peter P. (Bretzenheim DEX) Rger Helmut (Pfaffen-Schwabenheim DEX), Filter element.
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Karbachsch Massoud (Kreuznach DEX) Breitbach Peter P. (Bretzenheim DEX) Ruger Helmut (Pfaffen-Schwabenheim DEX), Filter element with regenerable bulk material filling and method for making same.
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Jewell James E. (Centerport NY) Koslow Evan E. (Westport CT), Filtering apparatus.
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Bredehorst Reinhard,DEX ; Pomato Nicholas ; Scheel Oliver,DEX ; Thiem Joachim,DEX, High yield preparation of dimeric to decameric chitin oligomers.
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Weller Joseph P. (Lake Jackson TX), Hydrous oxide activated charcoal.
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Clark Howard W. (Midland MI), Inorganic anion exchangers and preparation thereof.
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Yamada Koichi (Niihama JA) Hashimoto Tadanori (Niihama JA) Furumi Yoshinori (Niihama JA), Inorganic composition.
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Mouri Motoya,JPX ; Kimura Toshio,JPX ; Ueda Takeshi,JPX, Ion adsorbent.
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Takeuchi Tatsuro (Oumihachiman JPX) Sokukawa Masaki (Takatsuki JPX) Kimoto Ryuzo (Ibaraki JPX), Ion exchanger of hydrated oxide of Ti, Zr, or Sn and cured polyester, and exchange method.
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Wakamatsu Hidetoshi,JPX ; Sakurai Manabu,JPX ; Murakami Tsugio,JPX ; Kumoi Sadakatsu,JPX, Ion-exchanger, process for production thereof, and process for removal of multiply charged anions employing the ion-exc.
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Klantschi ; Klaus ; Aregger ; Anton, Method for removing phosphates from aqueous solutions.
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Shiga Minoru (Himeji JPX) Kano Toshiji (Kakogawa JPX) Kishi Takamichi (Himeji JPX), Method for removing sulfate ions from aqueous solution of alkali metal chloride.
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Fujita Kazunori (Tokaimura JPX) Takeuchi Seiji (Hitachiota JPX) Yamashita Hisao (Hitachi JPX) Nakajima Fumito (Hitachi JPX), Method for supporting hydrous metal oxide on carrier.
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Suzuki Toshishige,JPX ; Matsunaga Hideyuki,JPX ; Yokoyama Toshiro,JPX, Method for the preparation of a high-porosity adsorbent loaded with crystalline hydrous zirconium oxide.
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Prolss Ludwig (Bellach CHX), Method of production of a micro-porous membrane for filtration plants.
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Parsons Patrick J. (Edison NJ), Plate and frame filter press having modified flow pattern method.
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Schotten Alfons (Duren DEX), Plate filter press.
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Schotten ; Alfons, Plate filter press with adjustable end plate.
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Shiroto Yoshimi (Yokohama JPX) Higashi Takehito (Yokohama JPX) Ono Takeo (Kawasaki JPX), Process for hydrotreating heavy hydrocarbon oils, catalysts therefor, and a method of preparing such catalysts.
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Ulan Judith G. (Richmond CAX) Maycock Kenneth R. (White Rock CAX) Drackett Thomas S. (Vancouver CAX) Mok Felix M. F. (Vancouver CAX), Process for removing sulphate from aqueous solution.
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Otomura Keiichiro (Kurayoshi JPX) Ogura Yoshikazu (Kurayoshi JPX) Echigo Yoshiaki (Uji JPX) Yamao Mutsunori (Uji JPX) Ishikura Tadashi (Uji JPX), Process for treating waste water containing uranium and fluorine.
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Sugimori Shuichi (Hiroshima JPX) Kawamura Tomihiko (Hiroshima JPX) Matsuda Tadashi (Yokohama JPX) Nakano ; deceased Shintaro (late of Tokyo JPX by Shizuyo Nakano ; heir ; Hideki Nakano ; Masahiro Nak, Process of using a porous water-treating material.
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Frianeza-Kullberg Teresita C. (2357 Amity Ave. Gastonia NC 28054), Purification of brines with hydrous metal oxide ion exchangers.
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Lee John M. (Lake Jackson TX) Bauman William C. (Lake Jackson TX), Removal of Mg++and Ca++ions from NaCl brine.
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Lee John M. (Lake Jackson TX) Bauman William C. (Lake Jackson TX), Removal of sulfate ions from brine.
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Lee John M. (Lake Jackson TX) Bauman William C. (Lake Jackson TX), Removal of sulfate ions from brine.
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Lee John M. (Lake Jackson TX) Bauman William C. (Lake Jackson TX), Removal of sulfate ions from brine using amorphous polymeric zirconium oxide formed within a macroporous polymer matrix.
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Lee John M. (Lake Jackson TX) Bauman William C. (Lake Jackson TX), Removal of sulfate ions from brine using composite of polymeric zirconium hydrous oxide in macroporous matrix.
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Joubert Philippe (Lyons FRX), Removal of sulfate ions from saline solutions comprised thereof.
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Downing Anthony L. (Welwyn GB2) Hoyle Brian G. (Leighton Buzzard GB2) Squires Rodney C. (South Godstone GB2) James Anthony N. (Royston GB2), Removing selenium from water.
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Watanabe Kazuhiro (Iwaki JPX), Sorbent comprising spherical particles of activated carbon depositing non-crystalline compound of zirconium and process.
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Echigo Yoshiaki (Kyoto JPX) Suematsu Yoshiyuki (Kyoto JPX) Ishikura Tadashi (Kyoto JPX), Spherical ion exchange resin having matrix-bound metal hydroxide, method for producing the same and method for adsorptio.
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Chopin Thierry (Saint Denis FRX) Vilmin Gabriel (Princeton NJ), Zirconium/cerium mixed oxide catalyst/catalyst support compositions having high/stable specific surfaces.
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이 특허를 인용한 특허 (22)

Burba, III, John L.; Hassler, Carl R.; O'Kelley, C. Brock; Lupo, Joseph A.; Pascoe, Joseph R., Apparatus for treating a flow of an aqueous solution containing arsenic.
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Burba, John, Composition and process for making the composition.
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Witham, Richard Donald; McNew, Edward Bayer; Burba, III, John Leslie, Composition for removing arsenic from aqueous streams.
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Burba, III, John L., Composition for treating a fluid.
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Robinson, Elwyn, Filter.
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Meng, Xiaoguang; Dadachov, Mazakhir; Korfiatis, George P.; Christodoulatos, Christos, Methods of preparing a surface-activated titanium oxide product and of using same in water treatment processes.
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Meng,Xiaoguang; Dadachov,Mazakhir; Korfiatis,George P.; Christodoulatos,Christos; Moll,David J.; Onifer,Geofrey Paul; Rice,Daniel B.; Reim,Robert E.; Vance,Fredrick W.; Goltz,Harlan Robert; Han,Chan; Harris,William I., Methods of preparing a surface-activated titanium oxide product and of using same in water treatment processes.
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Cumberland,Scott L., Microorganism-removing filter medium having high isoelectric material and low melt index binder.
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Cumberland,Scott L.; Rinker,Edward B.; Enriquez,Carlos, Microorganism-removing filter medium having high isoelectric material and low melt index binder.
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Chen, Huimin; Jin, Lei, Nanostructured compositions having reduced dissolution of manganese and methods of making and using the same.
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Burba, III, John L.; Oriard, Tim L., Process and apparatus for treating a gas containing a contaminant.
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Witham, Richard Donald; McNew, Edward Bayer; Burba, III, John Leslie, Process for removing arsenic from aqueous streams.
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Witham,Richard Donald; McNew,Edward Bayer; Burba, III,John Leslie, Process for removing arsenic from aqueous streams.
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Witham,Richard Donald; McNew,Edward Bayer; Burba, III,John Leslie, Process for removing arsenic from drinking water.
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McNew,Edward Bayer; Witham,Richard Donald; Burba, III,John Leslie, Process using rare earths to remove oxyanions from aqueous streams.
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Cable, Robert; Hassler, Carl; Burba, John, Rare earth removal of hydrated and hydroxyl species.
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Psaras, Dimitrios; Gao, Yuan; Haneline, Mason; Lupo, Joseph; Landi, Carol, Removal of arsenic from aqueous streams with cerium (IV) oxide compositions.
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Reddy,Pratap G.; Turner,Charles D., Removal of arsenic from water with oxidized metal coated pumice.
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Levy, Ehud, Water purification apparatus and system.
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Witham, Richard Donald; McNew, Edward Bayer; Burba, III, John Leslie, Water purification device for arsenic removal.
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Chen, Huimin; Wang, Meidong; Xiao, T. Danny; Clifford, Dennis A., Water treatment compositions and methods of making and using.
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Zhao, Hongting; Moore, Robert C., Zirconium-modified materials for selective adsorption and removal of aqueous arsenic.
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