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ES2144915B1 - Proceso y equipo de depuracion electrolitica de aguas contaminadas utilizando catodos de oxigeno. - Google Patents

Proceso y equipo de depuracion electrolitica de aguas contaminadas utilizando catodos de oxigeno.

Info

Publication number
ES2144915B1
ES2144915B1 ES009700186A ES9700186A ES2144915B1 ES 2144915 B1 ES2144915 B1 ES 2144915B1 ES 009700186 A ES009700186 A ES 009700186A ES 9700186 A ES9700186 A ES 9700186A ES 2144915 B1 ES2144915 B1 ES 2144915B1
Authority
ES
Spain
Prior art keywords
anode
equipment
fact
oxygen
electrolytic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
ES009700186A
Other languages
English (en)
Other versions
ES2144915A1 (es
Inventor
Gimenez Juan Casado
Coso Enrique Brillas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carburos Metalicos SA
Original Assignee
Sociedad Espanola de Carburos Metalicos SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sociedad Espanola de Carburos Metalicos SA filed Critical Sociedad Espanola de Carburos Metalicos SA
Publication of ES2144915A1 publication Critical patent/ES2144915A1/es
Application granted granted Critical
Publication of ES2144915B1 publication Critical patent/ES2144915B1/es
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/46109—Electrodes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/46109—Electrodes
    • C02F2001/46133—Electrodes characterised by the material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/46109—Electrodes
    • C02F2001/46133—Electrodes characterised by the material
    • C02F2001/46138—Electrodes comprising a substrate and a coating
    • C02F2001/46142—Catalytic coating
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/46109—Electrodes
    • C02F2001/46152—Electrodes characterised by the shape or form
    • C02F2001/46157—Perforated or foraminous electrodes
    • C02F2001/46161—Porous electrodes
    • C02F2001/46166—Gas diffusion electrodes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
    • C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/4612—Controlling or monitoring
    • C02F2201/46125—Electrical variables
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/02—Fluid flow conditions
    • C02F2301/024—Turbulent
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/02—Specific form of oxidant
    • C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/02—Specific form of oxidant
    • C02F2305/026—Fenton's reagent

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

Mejoras en el objeto de la patente principal nº 9400299 por proceso y equipo de depuración electrolítica de aguas contaminadas utilizando cátodos de oxígeno. Las mejoras en el procedimiento se caracterizan por el hecho de que el o los ánodos utilizados en la patente principal son inertes, y por el hecho de que comprenden al menos un ánodo adicional de distinto material, permitiendo la oxidación que tiene lugar en el mismo regular dicha depuración electrolítica. El ánodo adicional es de hierro o acero y el pH del agua residual se regula utilizando medios de control que permiten aumentar o disminuir la concentración de iones Fe sup,2+ . Las mejoras en el equipo se caracterizan por el hecho de que comprenden por lo menos un ánodo inerte (1), por lo menos un cátodo de difusión de oxígeno (2), delimitándose entre al menos un cátodo y al menos un ánodo un compartimento (5) por el que circula el agua residual, y por el hecho de que además comprende al menos un ánodo adicional (9) de distinto material situado en el compartimento (5).
ES009700186A 1994-02-16 1997-01-31 Proceso y equipo de depuracion electrolitica de aguas contaminadas utilizando catodos de oxigeno. Expired - Fee Related ES2144915B1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES09400299A ES2080686B1 (es) 1994-02-16 1994-02-16 Proceso y equipo de depuracion electrolitica en aguas residuales contaminadas utilizando catodos de oxigeno.

Publications (2)

Publication Number Publication Date
ES2144915A1 ES2144915A1 (es) 2000-06-16
ES2144915B1 true ES2144915B1 (es) 2001-02-01

Family

ID=8285245

Family Applications (2)

Application Number Title Priority Date Filing Date
ES09400299A Expired - Fee Related ES2080686B1 (es) 1994-02-16 1994-02-16 Proceso y equipo de depuracion electrolitica en aguas residuales contaminadas utilizando catodos de oxigeno.
ES009700186A Expired - Fee Related ES2144915B1 (es) 1994-02-16 1997-01-31 Proceso y equipo de depuracion electrolitica de aguas contaminadas utilizando catodos de oxigeno.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
ES09400299A Expired - Fee Related ES2080686B1 (es) 1994-02-16 1994-02-16 Proceso y equipo de depuracion electrolitica en aguas residuales contaminadas utilizando catodos de oxigeno.

Country Status (9)

Country Link
US (1) US6224744B1 (es)
EP (1) EP0694501B1 (es)
AT (1) ATE210604T1 (es)
AU (1) AU1707695A (es)
CA (1) CA2160578C (es)
DE (1) DE69524491D1 (es)
ES (2) ES2080686B1 (es)
PT (1) PT694501E (es)
WO (1) WO1995022509A1 (es)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19847985C1 (de) * 1998-10-17 2000-02-10 Dbb Fuel Cell Engines Gmbh Behälter zur Aufnahme eines Betriebsmittels für den Betrieb von Brennstoffzellen sowie dessen Verwendung
FR2784979B1 (fr) * 1998-10-26 2001-09-28 Cie Ind Pour Le Traitement De Procede electrochimique de desinfection des eaux par electroperoxydation et dispositif pour la mise en oeuvre d'un tel procede
HUP0104664A2 (hu) 1998-12-07 2002-03-28 Zappi Water Purification Systems, Inc. Elektrolizáló cella, eljárás vizes oldatok tisztítására, valamint eljárás kemikáliák szintetizálására
GB9920532D0 (en) * 1999-09-01 1999-11-03 Univ Abertay Method
US6712949B2 (en) * 2001-07-22 2004-03-30 The Electrosynthesis Company, Inc. Electrochemical synthesis of hydrogen peroxide
US6761827B2 (en) 2001-10-26 2004-07-13 Zodiac Pool Care, Inc. Method and apparatus for purifying water
US7238278B2 (en) * 2001-10-26 2007-07-03 Zodiac Pool Care, Inc. Apparatus for purifying water
US20080057386A1 (en) 2002-10-15 2008-03-06 Polyplus Battery Company Ionically conductive membranes for protection of active metal anodes and battery cells
US7645543B2 (en) 2002-10-15 2010-01-12 Polyplus Battery Company Active metal/aqueous electrochemical cells and systems
US6936097B2 (en) * 2003-04-16 2005-08-30 Cabot Corporation Modified organic colorants and dispersions, and methods for their preparation
US6982040B2 (en) * 2003-04-16 2006-01-03 Zodiac Pool Care, Inc. Method and apparatus for purifying water
USD503770S1 (en) 2003-04-25 2005-04-05 Zodiac Pool Care, Inc. Water purifier
US7491458B2 (en) 2003-11-10 2009-02-17 Polyplus Battery Company Active metal fuel cells
US7282295B2 (en) 2004-02-06 2007-10-16 Polyplus Battery Company Protected active metal electrode and battery cell structures with non-aqueous interlayer architecture
US9368775B2 (en) 2004-02-06 2016-06-14 Polyplus Battery Company Protected lithium electrodes having porous ceramic separators, including an integrated structure of porous and dense Li ion conducting garnet solid electrolyte layers
EP1609886B1 (en) * 2004-06-11 2007-05-02 Matgas 2000, AIE Process for the production of hydrogen
US7211176B2 (en) * 2004-11-02 2007-05-01 Zodiac Pool Care, Inc. Replaceable chlorinator electrode assembly
WO2007062220A2 (en) 2005-11-23 2007-05-31 Polyplus Battery Company Li/air non-aqueous batteries
US8182943B2 (en) 2005-12-19 2012-05-22 Polyplus Battery Company Composite solid electrolyte for protection of active metal anodes
GB2440139A (en) * 2006-07-20 2008-01-23 John Bostock Electrocoagulation unit for the removal of contaminants from a fluid
US7754064B2 (en) * 2006-09-29 2010-07-13 Eltron Research & Development Methods and apparatus for the on-site production of hydrogen peroxide
HUP0700669A2 (en) * 2007-10-12 2010-04-28 Ivan Dr Raisz Process for preparation of drinking water by an electrochemical method using ionselective membrane, without using any chemical
WO2010005607A2 (en) * 2008-03-19 2010-01-14 Eltron Research & Development, Inc. Production of peroxycarboxylic acids
CN102124601B (zh) * 2008-06-16 2014-02-12 波利普拉斯电池有限公司 含水锂/空气电池组电池
GB201100175D0 (en) * 2011-01-07 2011-02-23 Veolia Water Solutions & Tech Wastewater treatment apparatus and method
US8562810B2 (en) 2011-07-26 2013-10-22 Ecolab Usa Inc. On site generation of alkalinity boost for ware washing applications
US9660311B2 (en) 2011-08-19 2017-05-23 Polyplus Battery Company Aqueous lithium air batteries
AU2012318934B2 (en) * 2011-10-07 2017-07-27 Robert Brian Dopp Electrochemical digestion of organic molecules
US8828574B2 (en) 2011-11-15 2014-09-09 Polyplus Battery Company Electrolyte compositions for aqueous electrolyte lithium sulfur batteries
US8828573B2 (en) 2011-11-15 2014-09-09 Polyplus Battery Company Electrode structures for aqueous electrolyte lithium sulfur batteries
US8828575B2 (en) 2011-11-15 2014-09-09 PolyPlus Batter Company Aqueous electrolyte lithium sulfur batteries
US9660265B2 (en) 2011-11-15 2017-05-23 Polyplus Battery Company Lithium sulfur batteries and electrolytes and sulfur cathodes thereof
US8932771B2 (en) 2012-05-03 2015-01-13 Polyplus Battery Company Cathode architectures for alkali metal / oxygen batteries
US9905860B2 (en) 2013-06-28 2018-02-27 Polyplus Battery Company Water activated battery system having enhanced start-up behavior
CN104495989B (zh) * 2014-12-24 2016-07-27 武汉大学 一种用于深度处理胺肟化生产废水的电化学氧化装置
CN105731606A (zh) * 2016-03-24 2016-07-06 大连理工大学 一种电化学协同Ni-Fe-LDH/rGO催化剂活化过硫酸盐处理有机废水的方法
US11117818B2 (en) 2018-07-23 2021-09-14 Powertech Water Inc. Faradic porosity cell
CN107244729B (zh) * 2017-05-23 2021-01-26 清华大学 一种饮用水处理中控制含卤副产物产生的方法
EP3826745A4 (en) * 2018-07-23 2022-04-13 Powertech Water Inc. FARADIC POROSITY CELL
CN111170412A (zh) * 2018-11-12 2020-05-19 中国科学院大连化学物理研究所 含有聚吡咯层的铈掺杂二氧化铅电极及其制备方法、应用
WO2021034580A2 (en) * 2019-08-22 2021-02-25 The Regents Of The University Of California High performance iron electrocoagulation systems for removing water contaminants
CN110627267A (zh) * 2019-09-24 2019-12-31 利民化学有限责任公司 一种用于降解废水中生物毒性的系统和方法
CN111072113A (zh) * 2020-01-03 2020-04-28 南开大学 一种采用主动扩散式阴极的过氧絮凝高效处理有机废水的方法
CN111185089B (zh) * 2020-01-09 2021-09-28 青岛理工大学 一种新型电芬顿催化降解VOCs的技术
EP3865459A1 (en) * 2020-02-13 2021-08-18 Universitat de Barcelona Water-processing electrochemical reactor
CN114620826B (zh) * 2022-03-28 2024-04-02 中化学朗正环保科技有限公司 废水脱氮用铁碳耦合生物颗粒载体材料及制备方法
CN116282407B (zh) * 2023-04-24 2024-07-19 南开大学 一种太阳能驱动污水电化学集成处理设备及污水处理方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793173A (en) * 1969-02-03 1974-02-19 K Price Wastewater treatment using electrolysis with activated carbon cathode
FR2270211A1 (en) 1974-05-06 1975-12-05 Segura Max Purifying and degreasing waste water and sewage - by an electrolytic process
DE2861037D1 (en) * 1977-12-06 1981-11-26 Battelle Memorial Institute Process and reactor for producing a treating aqueous solution containing at least hydrogenoperoxide ions and hydroxyl ions according to predetermined concentrations and use of the reactor
CA1155085A (en) 1978-04-14 1983-10-11 Sameer M. Jasem Electrochemical gas separation including catalytic regeneration
EP0141780A1 (fr) * 1983-10-11 1985-05-15 Battelle Memorial Institute Procédé pour la décontamination électrochimique de l'eau
DE3430485A1 (de) * 1984-08-18 1986-02-27 Basf Ag, 6700 Ludwigshafen Brennstoffzelle
SU1318536A1 (ru) * 1984-11-21 1987-06-23 Всесоюзный Научно-Исследовательский Институт Водоснабжения,Канализации,Гидротехнических Сооружений И Инженерной Гидрогеологии "Водгео" Способ очистки сточных вод от сероводорода
US4585710A (en) 1985-04-22 1986-04-29 Duracell Inc. Zinc/air cell cathode
EP0231100A3 (en) 1986-01-21 1989-07-12 Wilfred Anthony Murrell Water cleaning system
US4927509A (en) 1986-06-04 1990-05-22 H-D Tech Inc. Bipolar electrolyzer
US4885217A (en) 1987-07-06 1989-12-05 Alupower, Inc. Air cathodes and materials therefor
DE69008640T2 (de) * 1989-07-24 1994-08-18 Nagakazu Furuya Zersetzung von Schadstoffen.
JPH0734909B2 (ja) 1990-09-06 1995-04-19 システムゲイト株式会社 電気浮上装置
JPH04197489A (ja) 1990-11-29 1992-07-17 Fuji Photo Film Co Ltd 被酸化性物質含有廃液の処理方法

Also Published As

Publication number Publication date
CA2160578C (en) 2007-01-30
CA2160578A1 (en) 1995-08-24
ES2080686B1 (es) 1996-10-16
EP0694501A1 (en) 1996-01-31
US6224744B1 (en) 2001-05-01
AU1707695A (en) 1995-09-04
WO1995022509A1 (es) 1995-08-24
DE69524491D1 (de) 2002-01-24
ATE210604T1 (de) 2001-12-15
ES2144915A1 (es) 2000-06-16
EP0694501B1 (en) 2001-12-12
PT694501E (pt) 2002-06-28
ES2080686A1 (es) 1996-02-01

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