CA2058972A1 - Process and installation for treating liquids charged with pollutants - Google Patents

Process and installation for treating liquids charged with pollutants

Info

Publication number
CA2058972A1
CA2058972A1 CA2058972A CA2058972A CA2058972A1 CA 2058972 A1 CA2058972 A1 CA 2058972A1 CA 2058972 A CA2058972 A CA 2058972A CA 2058972 A CA2058972 A CA 2058972A CA 2058972 A1 CA2058972 A1 CA 2058972A1
Authority
CA
Canada
Prior art keywords
installation
pollutants
treating liquids
ozone
charged
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.)
Granted
Application number
CA2058972A
Other languages
French (fr)
Other versions
CA2058972C (en
Inventor
Ortwin Leitzke
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.)
Wedeco Umwelttechnologien Wasser Boden Luft GmbH
Original Assignee
Ortwin Leitzke
Wedeco Umwelttechnologie Wasser Boden Luft G.M.B.H.
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6382986&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2058972(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ortwin Leitzke, Wedeco Umwelttechnologie Wasser Boden Luft G.M.B.H. filed Critical Ortwin Leitzke
Publication of CA2058972A1 publication Critical patent/CA2058972A1/en
Application granted granted Critical
Publication of CA2058972C publication Critical patent/CA2058972C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/10—Ultra-violet radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/20—Gaseous substances, e.g. vapours
    • A61L2/202—Ozone
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • 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
    • C02F2201/78—Details relating to ozone treatment devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/42—Ozonizers

Abstract

A process and an installation for treating liquids, which are charged with pollutants that are difficult to break down, by means of wet oxidation with ozone-containing gas and UV
radiation. The installation comprises injectors (6,8), by means of which ozone-containing gas produced in an ozone generator (10) can be passed into the liquid. The liquid is then introduced into a reaction and degasification vessel (20), before it passes through the UV irradiation units (40,50).
CA002058972A 1989-06-19 1990-06-13 Process and installation for treating liquids charged with pollutants Expired - Lifetime CA2058972C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3919885.5 1989-06-19
DE3919885A DE3919885C2 (en) 1989-06-19 1989-06-19 Process and plant for the treatment of aqueous liquids contaminated with poorly degradable pollutants

Publications (2)

Publication Number Publication Date
CA2058972A1 true CA2058972A1 (en) 1990-12-20
CA2058972C CA2058972C (en) 1998-04-28

Family

ID=6382986

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002058972A Expired - Lifetime CA2058972C (en) 1989-06-19 1990-06-13 Process and installation for treating liquids charged with pollutants

Country Status (18)

Country Link
US (1) US5302298A (en)
EP (1) EP0478583B2 (en)
JP (1) JPH0722753B2 (en)
AT (1) ATE92438T1 (en)
CA (1) CA2058972C (en)
CZ (1) CZ283017B6 (en)
DD (1) DD295142A5 (en)
DE (2) DE3919885C2 (en)
DK (1) DK0478583T3 (en)
ES (1) ES2058918T5 (en)
FI (1) FI104320B1 (en)
HU (1) HU212078B (en)
NO (1) NO180190C (en)
PL (1) PL165991B1 (en)
PT (1) PT94401B (en)
RU (1) RU2041171C1 (en)
WO (1) WO1990015778A1 (en)
ZA (1) ZA904746B (en)

Families Citing this family (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4104094A1 (en) * 1991-02-11 1992-08-13 Rudolf Gesslauer Procedure and device for pre-clearing waste liq. such as pig slurry - after removal of coarse solid material, water undergoes ozonisation and electrolysis in prepn. for biological treatment
JPH04297266A (en) * 1991-03-27 1992-10-21 Agency Of Ind Science & Technol Sterilizing/cleaning apparatus for medical instrument
DE4110687C2 (en) * 1991-04-03 1995-05-04 Martin Dipl Ing Fricke Modular construction device for the treatment of polluted aqueous liquids
DE4120340A1 (en) * 1991-06-20 1992-12-24 Stausberg Klara Maria Treated sewage water disinfection - by aerating air and ozone, dosing with active carbon@ and applying UV radiation
JP2872829B2 (en) * 1991-07-31 1999-03-24 オルガノ株式会社 Aeration apparatus and method for production of ultrapure water
EP0642358A1 (en) * 1991-10-09 1995-03-15 J. MORTENSEN & CO., LTD. Fluid treatment
FR2688209B1 (en) * 1992-03-09 1994-05-06 Dewavrin Fils Cie Sa A PROCESS FOR THE POWERFUL DEODORIZATION OF FLUIDS LOADED WITH ORGANIC MATERIALS, MEANS FOR CARRYING OUT THE PROCESS AND PLANT PROVIDED THEREWITH.
DE4238324A1 (en) * 1992-11-13 1994-05-19 Abb Research Ltd Removal of dangerous contaminants from oxygen-contg. gases - gas stream is treated with ozone as well as with UV-light
US5376265A (en) * 1994-02-01 1994-12-27 Szabo; Louis Ozone/water contactor
DE4434753A1 (en) * 1994-09-29 1996-04-04 Wedeco Umwelttechnologie Wasser Boden Luft Gmbh Process and plant for biodegradation of pollutants in aqueous liquids
DE4440969A1 (en) * 1994-11-17 1996-05-30 Messer Griesheim Gmbh Method and device for treating waste water with ozone
US6117334A (en) * 1995-01-10 2000-09-12 Coury; William S. Decontamination reactor system and method of using same
US6361697B1 (en) 1995-01-10 2002-03-26 William S. Coury Decontamination reactor system and method of using same
US5637231A (en) * 1995-06-07 1997-06-10 Huron Valley Technology, Inc. Method and apparatus for using ozone in a pressure vessel to treat stream of pollutants
US5785864A (en) * 1995-06-23 1998-07-28 Ajt & Associates, Inc. Apparatus for the purification of water and method therefor
US6090294A (en) * 1995-06-23 2000-07-18 Ajt & Associates, Inc. Apparatus for the purification of water and method therefor
US5711887A (en) * 1995-07-31 1998-01-27 Global Water Industries, Inc. Water purification system
US6001247A (en) * 1996-05-01 1999-12-14 Schulz; Christopher R. Removable, in-line diffuser apparatus for ozone disinfection of water
US5942125A (en) * 1996-05-14 1999-08-24 Germiphene Corporation Dental unit water purifier
US6267895B1 (en) 1996-05-14 2001-07-31 Germiphene Corporation Catalytic dental water apparatus
US5709799A (en) * 1996-06-03 1998-01-20 Vortex Corporation Super ozonating water purifier
DE19645548C2 (en) * 1996-11-05 2000-01-13 Stadtwerke Duisburg Ag Process for ozonization of water
US5814292A (en) * 1996-12-19 1998-09-29 Energy Research Group Comprehensive energy producing methods for aqueous phase oxidation
DE19702884C2 (en) * 1997-01-28 2000-07-13 Enviro Chemie Abwassertechnik Device for cleaning waste water with ozone
US5733456A (en) * 1997-03-31 1998-03-31 Okey; Robert W. Environmental control for biological nutrient removal in water/wastewater treatment
JPH10295784A (en) * 1997-05-02 1998-11-10 Masamichi Kikuchi Sterilizing device and sterilizing method
US6068778A (en) * 1997-07-18 2000-05-30 Tm Industrial Supply, Inc. Water purification system
US5931990A (en) * 1997-12-03 1999-08-03 Coronator Tank for removing unabsorbed gas from a mixture of unabsorbed gas and liquid
USD420720S (en) * 1998-07-27 2000-02-15 AJT & Associates Apparatus for the purification of water
USD424660S (en) * 1998-07-27 2000-05-09 Ajt & Associates, Inc. Apparatus for the purification of water
US5968352A (en) * 1998-10-09 1999-10-19 Novazone Gas contact tank
AU5032700A (en) 1999-05-21 2000-12-12 Life Spring Limited Partnership User-activated ultra-violet water treatment unit
US6569307B2 (en) * 2000-10-20 2003-05-27 The Boc Group, Inc. Object plating method and system
US6669902B1 (en) * 2000-11-08 2003-12-30 L'air Liquide - Societe Anonyme A'directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Ozonated foam medium and production system and method for sanitizing a food processing environment
US6737020B1 (en) * 2000-11-28 2004-05-18 Remotelight, Inc. Microorganism neutralization device and method
US6890414B2 (en) 2001-09-04 2005-05-10 The Boc Group, Inc. Purification system and method
DE10144510A1 (en) * 2001-09-10 2003-04-03 Wedeco Ag Ozone / UV combination to break down endocrine substances
KR20030046621A (en) * 2001-12-16 2003-06-18 한국전자통신연구원 Method for seting communication environment of smart card and mobile entity using layered protocol stack with selective multiple transmission protocols
US20040060877A1 (en) * 2002-09-18 2004-04-01 Kasten Stephen P. Apparatus for preventing backflow into an ozone generator
US7385204B2 (en) * 2003-10-29 2008-06-10 Calgon Carbon Corporation Fluid treatment device
US7837951B2 (en) * 2005-01-05 2010-11-23 Gsg Holdings, Inc. Modular ozone generator with an air diffuser
ES2296511B1 (en) * 2006-03-22 2009-03-16 Jesus Manuel Taboada Presedo INSTALLATION FOR THE STERILIZATION OF SALMUERA FROM THE CONSERVATION OF AGRICULTURAL PRODUCTS, PRESERVATION OF FISH AND LEATHER.
US8048316B2 (en) * 2006-03-28 2011-11-01 Zuvo Water, Llc Method and apparatus for reducing microorganisms in water
US8066940B2 (en) * 2006-06-30 2011-11-29 Zuvo Water, Llc Apparatus and method for removing arsenic and inorganic compositions from water
US8066941B2 (en) * 2006-06-30 2011-11-29 Zuvo Water, Llc Apparatus and method for purifying water in a storage tank
US7794608B2 (en) * 2006-06-30 2010-09-14 Zuvo Water, Llc Apparatus and method for treating water with ozone
US20080008632A1 (en) * 2006-07-07 2008-01-10 Rolf Engelhard Pressurized uv/o3 water purification system
US7818822B2 (en) * 2006-07-13 2010-10-26 Zuvo Water, Llc Toilet tank water purifier
US20080142452A1 (en) * 2006-08-01 2008-06-19 Vortex Corporation Apparatus and method for preventing biological regrowth in water
DE102007046003A1 (en) 2007-09-26 2008-07-31 Wacker Chemie Ag To remove organic silicon compounds from waste water it is oxidized using ozone and hydrogen peroxide
US7915474B2 (en) * 2009-04-01 2011-03-29 Earth Renewal Group, Llc Aqueous phase oxidation process
US8481800B2 (en) * 2009-04-01 2013-07-09 Earth Renewal Group, Llc Aqueous phase oxidation process
US7951988B2 (en) * 2009-04-01 2011-05-31 Earth Renewal Group, Llc Aqueous phase oxidation process
US8115047B2 (en) * 2009-04-01 2012-02-14 Earth Renewal Group, Llc Aqueous phase oxidation process
US8168847B2 (en) * 2009-04-01 2012-05-01 Earth Renewal Group, Llc Aqueous phase oxidation process
US9272936B2 (en) 2009-04-01 2016-03-01 Earth Renewal Group, Llc Waste treatment process
JP5802558B2 (en) * 2009-10-05 2015-10-28 株式会社キッツ Hydroponic system
DE102010010710A1 (en) * 2010-03-08 2011-09-08 Heliosaquaplus Technology Ag Processing liquid, preferably water and supplying it to extraction point, comprises conducting processing liquid along a processing path of a device arranged in a main line for reducing organic substances or bacteria up to extraction point
DE102011110105A1 (en) 2011-08-12 2013-02-14 Airbus Operations Gmbh Water supply system with bi-directional UV disinfection device
GB201210456D0 (en) * 2012-06-13 2012-07-25 Vws Uk Ltd Method and system for providing purified water
CN104671616B (en) * 2015-03-11 2016-09-21 天津市联合环保工程设计有限公司 A kind of cities and towns and the advanced sewage treatment system of industrial park
RU2606988C2 (en) * 2015-03-30 2017-01-10 Евгений Анатольевич Погадаев Method of purifying waste water
US11046602B2 (en) 2015-09-17 2021-06-29 Charles E. C. Harris Fluid purification apparatus and method
RU2636076C2 (en) * 2015-12-02 2017-11-20 Негосударственная Академия Наук И Инноваций Method of photochemical purifying water and device for its implementation
EP3602024A4 (en) 2017-03-21 2020-11-18 Hayward Industries, Inc. Systems and methods for sanitizing pool and spa water
CN106977017A (en) * 2017-05-04 2017-07-25 青海盐湖机电装备技术有限公司 The processing method and processing equipment of the polluters such as chlorinated hydrocarbon are contained in electrolytic magnesium factory
US11472727B2 (en) * 2017-06-09 2022-10-18 Hayward Industries, Inc. Combination ultraviolet ray and ozone water sanitizing unit
JP2019126758A (en) * 2018-01-23 2019-08-01 パナソニック株式会社 Liquid treatment apparatus
CN112591957B (en) * 2020-11-24 2022-09-02 湖南高德联创环境管理有限公司 Spout medicine device residual medicine and decompose processing system

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855124A (en) * 1971-11-22 1974-12-17 Gen Electric Process and apparatus for the purification of an aqueous waste stream from a silicone-polymer producing plant
DE2551622A1 (en) * 1973-02-17 1977-06-02 Reiner Dipl Ing Wiest Sterilising liquids by ultraviolet radiation with ozonised air - in two vessel circuit recycling air for intensified action
GB1543225A (en) * 1975-04-28 1979-03-28 Houston Research Inc Oxidation of organic refractories in an aqueous medium
US4045316A (en) * 1975-05-27 1977-08-30 Shintech Incorporated Photochemical process for decontaminating gaseous or vaporous streams
US4028246A (en) * 1975-11-20 1977-06-07 Lund Norman S Liquid purification system
CA1048733A (en) * 1977-02-02 1979-02-20 Anthony J. Last Ozone/ultraviolet water purifier
CH619911A5 (en) * 1977-03-22 1980-10-31 Schlatter Ag
DE2756400A1 (en) * 1977-12-17 1979-06-21 Stausberg Liquid sterilisation e.g. in swimming pools - by UV irradiation and also injecting with ozonised air
US4179616A (en) * 1978-02-21 1979-12-18 Thetford Corporation Apparatus for sanitizing liquids with ultra-violet radiation and ozone
CA1081913A (en) * 1978-02-21 1980-07-22 Allan J. Coviello Apparatus for sanitizing liquids
US4230571A (en) * 1979-01-22 1980-10-28 Dadd Robert C Ozone/ultraviolet water purification
US4273660A (en) * 1979-02-21 1981-06-16 Beitzel Stuart W Purification of water through the use of ozone and ultraviolet light
JPS55149688A (en) * 1979-05-08 1980-11-21 Mitsubishi Electric Corp Disposal plant for waste water
JPS5644002A (en) * 1979-09-18 1981-04-23 Power Reactor & Nuclear Fuel Dev Corp Gas aggregating and capturing apparatus
US4352740A (en) * 1980-02-08 1982-10-05 Linde Aktiengesellschaft Water ozonation method
US4512900A (en) * 1983-12-13 1985-04-23 International Business Machines Corporation Method for treating waste compositions
US4548716A (en) * 1984-07-25 1985-10-22 Lucas Boeve Method of producing ultrapure, pyrogen-free water
EP0180826B1 (en) * 1984-10-31 1990-07-11 Siemens Aktiengesellschaft Process for chemically decontaminating the metallic main components and systems of nuclear reactors
US4595498A (en) * 1984-12-27 1986-06-17 Thomson Components-Mostek Corporation Water-polishing loop
JPS6291289A (en) * 1985-10-17 1987-04-25 Mitsubishi Electric Corp Apparatus for purifying drinking water
JPS62176595A (en) * 1986-01-28 1987-08-03 Ebara Infilco Co Ltd Method for removing organic substance in waste water
JPH0749118B2 (en) * 1986-04-04 1995-05-31 日本電気環境エンジニアリング株式会社 UV oxidizer
JPS6324433A (en) * 1986-07-17 1988-02-01 Fujitsu Ltd Device address detecting system
CH674003A5 (en) * 1987-03-11 1990-04-30 Bbc Brown Boveri & Cie
US4913827A (en) * 1987-08-06 1990-04-03 Pci Inc. Process for purifying and de-pyrogenating water
DE3836850A1 (en) * 1988-10-28 1990-05-03 Guenther O Prof Dr Schenck Process and apparatus for purifying waters of oxidisable carbon compounds contained therein
JPH0647105B2 (en) * 1989-12-19 1994-06-22 株式会社荏原総合研究所 Purification method and device for pure water or ultrapure water
US5180499A (en) * 1990-10-17 1993-01-19 Envirozone Technologies, Inc. Process for removal of solid, chemical and bacterial waste from water

Also Published As

Publication number Publication date
HU905207D0 (en) 1992-04-28
EP0478583B1 (en) 1993-08-04
EP0478583B2 (en) 1997-07-09
DE3919885A1 (en) 1990-12-20
PL165991B1 (en) 1995-03-31
NO180190B (en) 1996-11-25
HU212078B (en) 1996-02-28
EP0478583A1 (en) 1992-04-08
NO914334D0 (en) 1991-11-05
ZA904746B (en) 1991-04-24
US5302298A (en) 1994-04-12
PT94401B (en) 1997-02-28
NO914334L (en) 1991-11-05
JPH0722753B2 (en) 1995-03-15
NO180190C (en) 1997-03-05
ATE92438T1 (en) 1993-08-15
DE3919885C2 (en) 1994-06-30
RU2041171C1 (en) 1995-08-09
CA2058972C (en) 1998-04-28
FI104320B (en) 1999-12-31
FI915905A0 (en) 1991-12-16
ES2058918T3 (en) 1994-11-01
DK0478583T3 (en) 1993-10-18
PL285688A1 (en) 1991-02-25
DD295142A5 (en) 1991-10-24
ES2058918T5 (en) 1997-10-16
CS9003039A2 (en) 1991-11-12
DE59002218D1 (en) 1993-09-09
JPH04506029A (en) 1992-10-22
CZ283017B6 (en) 1997-12-17
HUT66839A (en) 1995-01-30
WO1990015778A1 (en) 1990-12-27
PT94401A (en) 1991-02-08
FI104320B1 (en) 1999-12-31

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