DE3843679A1 - Process for water treatment - Google Patents
Process for water treatmentInfo
- Publication number
- DE3843679A1 DE3843679A1 DE19883843679 DE3843679A DE3843679A1 DE 3843679 A1 DE3843679 A1 DE 3843679A1 DE 19883843679 DE19883843679 DE 19883843679 DE 3843679 A DE3843679 A DE 3843679A DE 3843679 A1 DE3843679 A1 DE 3843679A1
- Authority
- DE
- Germany
- Prior art keywords
- water
- hydrogen peroxide
- wavelength range
- exposed
- water treatment
- 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.)
- Ceased
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 10
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000005855 radiation Effects 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 230000003647 oxidation Effects 0.000 claims abstract description 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 4
- 229910052753 mercury Inorganic materials 0.000 claims description 4
- 239000007800 oxidant agent Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 238000000746 purification Methods 0.000 abstract description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- -1 iron chloride Chemical class 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
-
- 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
- C02F1/722—Oxidation by peroxides
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Medicinal Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Food Science & Technology (AREA)
- Toxicology (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Wasserauf bereitung durch Behandeln des gegebenenfalls mechanisch vorgereinigten Wassers mit einem Oxidationsmittel.The invention relates to a method for water supply preparation by treating the if necessary mechanically pre-cleaned water with a Oxidizing agent.
Es ist bekannt, zur Reinigung von Abwasser chemische Oxidationsmittel wie Wasserstoffperoxid oder insbesondere Ozon einzusetzen. Hierbei erfolgt teilweise ein Abbau organischer Inhaltstoffe des Wassers bis zur Stufe des Kohlendioxids. Wegen des niedrigen Oxidationspotentials von 0,68 V bei H2O2 ist dieses als alleiniges Mittel zur Wasseraufbereitung ungeeignet, insbesondere wenn halogenierte Kohlen wasserstoffe als Verunreinigung im Wasser vorkommen.It is known to use chemical oxidizing agents such as hydrogen peroxide or in particular ozone for the purification of waste water. Here, some of the water's organic constituents are broken down to the level of carbon dioxide. Because of the low oxidation potential of 0.68 V for H 2 O 2 , this is unsuitable as the sole agent for water treatment, especially when halogenated carbons are present in the water as impurities.
Es wurde nun gefunden, daß man zu einer guten Reinigung von Wasser, das insbesondere mit halogenierten Kohlenwasserstoffen verunreinigt ist, durch eine Kombination der chemischen Behandlung mit Wasserstoff peroxid und einer Ultraviolettbestrahlung kommen kann.It has now been found that one can be a good one Purification of water, especially with halogenated Is contaminated by a hydrocarbon Combination of chemical treatment with hydrogen peroxide and ultraviolet radiation can.
Das erfindungsgemäße Verfahren zur Wasseraufbereitung durch Behandeln des gegebenenfalls mechanisch vorgereinigten Wassers mit einem Oxidationsmittel ist dadurch gekennzeichnet, daß man das aufzubereitende Wasser mit der zur Oxidation von Verunreinigungen erforderlichen Menge Wasser stoffperoxid versetzt, das Gemisch durch einen Reaktor leitet, in welchem es einer Ultraviolettstrahlung im Wellenlängenbereich von 200 bis 400 nm ausgesetzt wird und, falls erforderlich, eine übliche Nachreinigung anschließt.The method for water treatment according to the invention by treating the optionally mechanically pre-cleaned Water with an oxidizing agent is characterized that the water to be treated with that for oxidation amount of water required from contaminants added peroxide, the mixture through a reactor conducts in which there is an ultraviolet radiation in the Wavelength range from 200 to 400 nm is exposed and, if necessary, a normal post-cleaning connects.
Wie gefunden wurde, kann die Dosierung der erforderlichen Menge Wasserstoffperoxid durch einen Mikroprozessor erfolgen, der in Abhängigkeit von gemessenen Werten des chemischen Sauerstoffbedarfs (CSB) gesteuert wird. Hierzu ist beispielsweise eine vor- bzw. nachgeschaltete potentiometrisch arbeitende Sauerstoffelektrode geeignet.As has been found, the dosage may be required Amount of hydrogen peroxide by a microprocessor take place depending on the measured values chemical oxygen demand (COD) is controlled. For this purpose, there is, for example, an upstream or downstream one Potentiometric oxygen electrode suitable.
Zusätzlich kann die Vor- bzw. Nachreinigung durch mechanische Filter, Zentrifugieren usw. nach Maßgabe einer kontinuierlichen Leitfähigkeits- und/oder Trübungsmessung erfolgen.In addition, the pre- or post-cleaning can be carried out mechanical filters, centrifugation, etc. as required a continuous conductivity and / or Turbidity measurement done.
Die Bestrahlung mit Ultraviolettlicht kann bei vorzugsweise verschiedenen Wellenlängen im gleichen Reaktor oder in mehreren untereinander geschalteten Reaktoren erfolgen.Irradiation with ultraviolet light can preferably different wavelengths in the same Reactor or in several interconnected Reactors take place.
Wie gefunden wurde, sollte vorzugsweise wenigstens eine Quecksilber-Niederdrucklampe im Wellenlängen bereich von 250 bis 260 nm und mindestens eine Quecksilber-Hochdrucklampe im Wellenlängenbereich von 200 bis 600 nm eingesetzt werden. Vorzugsweise handelt es sich um selbstreinigende Lampen, die gebündelt angeordnet sind und vom wasserstoffhaltigen, aufzubereitendem Wasser in dünner Schicht umströmt werden.As found, it should preferably be at least a low-pressure mercury lamp in the wavelength range from 250 to 260 nm and at least one High-pressure mercury lamp in the wavelength range from 200 to 600 nm can be used. Preferably are self-cleaning lamps that are arranged in bundles and from the hydrogen-containing, flows around the water to be treated in a thin layer will.
Die genaue Reaktorgröße und die Zahl und Leistung der Ultraviolettstrahler hängt von der Art des aufzubereitenden Wassers und dessen Verunreinigungs gehalt ab.The exact reactor size and the number and power the ultraviolet emitter depends on the type of water to be treated and its contamination hold off.
Gegebenenfalls kann noch eine weitere Zufuhr von Chemikalien erfolgen, deren Art ebenfalls von der Verunreinigung abhängt. So können chemische Fällungsmittel für Phosphate, wie Eisenchlorid, vor oder nach der Behandlung mit UV-Licht und Wasserstoffperoxid eindosiert und wieder abgetrennt werden.If necessary, a further supply of Chemicals are made, the type of which also Contamination depends. So chemical Precipitating agents for phosphates, such as iron chloride, before or after treatment with UV light and Hydrogen peroxide metered in and separated off again will.
Weitere, an sich bekannte Aufbereitungsmaßnahmen können dem Verfahren vorgeschaltet oder angeschlossen werden.Further processing measures known per se can be connected upstream or connected to the process will.
Das erfindungsgemäße Verfahren erlaubt eine schonende Wasseraufbereitung, z. B. für Trinkwasser, die mittels moderner Mikroprozessortechnik kontinuierlich durch geführt und gesteuert werden kann.The method according to the invention permits a gentle one Water treatment, e.g. B. for drinking water using modern microprocessor technology continuously can be managed and controlled.
Die Zeichnung ist ein Beispiel für eine Wasseraufbereitung, wobei das Wasser oxidierbare Stoffe und halogenierte Kohlenwasserstoffe enthält.The drawing is an example of one Water treatment, the water being oxidizable Contains substances and halogenated hydrocarbons.
Die Steuerung erfolgt über Leitfähigkeits (LF) Messung und Sauerstoffelektroden (O2-Sonden), Wasserstoffperoxid (handelsüblich, 3%) wird durch die Dosierpumpe M eingegeben und das Gemisch in vorzugsweise verspiegeltem Reaktor einer UV-Strahlung im Bereich von 200-600 nm ausgesetzt. Nachfolgend erfolgt die Messung von Leitfähigkeit, CSB-Wert und Trübung zur Rückgabe an den Mikroprozessor.It is controlled via conductivity (LF) measurement and oxygen electrodes (O 2 probes), hydrogen peroxide (commercially available, 3%) is entered by the metering pump M and the mixture is exposed to UV radiation in the range of 200-600 nm in a preferably mirrored reactor . The conductivity, COD value and turbidity are then measured for return to the microprocessor.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19883843679 DE3843679A1 (en) | 1988-12-23 | 1988-12-23 | Process for water treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19883843679 DE3843679A1 (en) | 1988-12-23 | 1988-12-23 | Process for water treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3843679A1 true DE3843679A1 (en) | 1990-07-05 |
Family
ID=6370122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19883843679 Ceased DE3843679A1 (en) | 1988-12-23 | 1988-12-23 | Process for water treatment |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3843679A1 (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0436922A2 (en) * | 1990-01-09 | 1991-07-17 | Layer + Knödler Abwassertechnik + Kunststoffbau Gmbh | Method and apparatus for treating effluent |
| DE4005488A1 (en) * | 1990-02-21 | 1991-08-22 | Wabner Dietrich | METHOD AND DEVICE FOR WATER DETOXIFICATION |
| DE4006234A1 (en) * | 1990-02-28 | 1991-08-29 | Goema Dr Goetzelmann Physikali | METHOD FOR DEGRADING POLLUTANTS CONTAINED IN A LIQUID |
| DE4031609A1 (en) * | 1990-03-16 | 1991-09-19 | Kodak Ag | METHOD AND DEVICE FOR PROCESSING LIQUID RESIDUES FROM PHOTOGRAPHIC PROCESSES |
| US5244570A (en) * | 1991-05-06 | 1993-09-14 | Champion International Corporation | Apparatus for treating wastewater |
| EP0577031A1 (en) * | 1992-07-02 | 1994-01-05 | Solvay Umweltchemie GmbH | Method for gasifying and disinfection and device for simultaneously carrying out |
| WO1994002423A1 (en) * | 1992-07-23 | 1994-02-03 | Diversey Corporation | Method and apparatus for controlling microorganisms |
| EP0622339A1 (en) * | 1993-04-30 | 1994-11-02 | Kodak-Pathe | Process for treating photographic effluents by means of ultraviolet radiation and hydrogen peroxide |
| EP0634650A2 (en) * | 1993-07-12 | 1995-01-18 | Degussa Aktiengesellschaft | Method and device for determining continuously the concentration of hydrogen peroxide or oxidants therefor |
| EP0638523A1 (en) * | 1993-08-11 | 1995-02-15 | Brigitte Blümel | Water sterilising device especially for use by dentists and physicians |
| EP0696552A1 (en) | 1994-08-08 | 1996-02-14 | Kodak-Pathe | Process for treating photographic effluents using ultraviolet and hydrogen peroxide |
| DE19512908A1 (en) * | 1995-04-06 | 1996-10-10 | Abb Patent Gmbh | Monitoring industrial waste outflow for heavy metal content |
| DE19530086A1 (en) * | 1995-08-16 | 1997-02-20 | Robert Prof Dr Fleischmann | Treatment of surface or waste water |
| WO1998042624A1 (en) * | 1997-06-23 | 1998-10-01 | Soloviev, Evgeny Vladimirovich | Method and device for uv treatment of liquid, air and surface |
| FR2795713A1 (en) * | 1999-07-01 | 2001-01-05 | Suez Lyonnaise Des Eaux | METHOD FOR CONDUCTING URBAN WASTEWATER TREATMENT PLANTS BASED ON CHARGE INDICATIONS |
| DE10124816A1 (en) * | 2001-05-21 | 2002-12-05 | Miele & Cie | Process for the disinfection of fresh or used water used as a rinsing liquid for a program-controlled automatic washing machine |
| DE102004037927A1 (en) * | 2004-08-04 | 2006-03-16 | Polyplan Gmbh | Process and assembly to determine the quantity of biological impurities in swimming pool water by reaction with agent |
| WO2007012442A1 (en) * | 2005-07-27 | 2007-02-01 | Jung & Co. Gerätebau GmbH | Disinfection device having a uv light source |
| DE102009040429A1 (en) * | 2009-09-07 | 2011-03-24 | Tetra Gmbh | Purification of maintenance water by generation of hydroxyl radicals |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4012321A (en) * | 1975-03-25 | 1977-03-15 | The United States Of America As Represented By The Secretary Of The Navy | Oxidation of refractory organics in aqueous waste streams by hydrogen peroxide and ultraviolet light |
| DE2300273B2 (en) * | 1972-01-07 | 1981-08-06 | Toray Industries, Inc., Tokyo | Device for wastewater treatment |
| DE3344275A1 (en) * | 1983-12-07 | 1985-06-13 | Kleindienst GmbH, 8900 Augsburg | Process and apparatus for treating waste water by flocculation |
| EP0144952A2 (en) * | 1983-12-13 | 1985-06-19 | International Business Machines Corporation | Method for treating waste compositions containing copper and a copper complexing agent |
| DE3501528A1 (en) * | 1985-01-18 | 1986-07-24 | Forschungsinstitut für Edelmetalle und Metallchemie, 7070 Schwäbisch Gmünd | Process for the oxidation of poorly degradable organic compounds, such as complexing agents and heavy metal complexes, in waste waters |
-
1988
- 1988-12-23 DE DE19883843679 patent/DE3843679A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2300273B2 (en) * | 1972-01-07 | 1981-08-06 | Toray Industries, Inc., Tokyo | Device for wastewater treatment |
| US4012321A (en) * | 1975-03-25 | 1977-03-15 | The United States Of America As Represented By The Secretary Of The Navy | Oxidation of refractory organics in aqueous waste streams by hydrogen peroxide and ultraviolet light |
| DE3344275A1 (en) * | 1983-12-07 | 1985-06-13 | Kleindienst GmbH, 8900 Augsburg | Process and apparatus for treating waste water by flocculation |
| EP0144952A2 (en) * | 1983-12-13 | 1985-06-19 | International Business Machines Corporation | Method for treating waste compositions containing copper and a copper complexing agent |
| DE3501528A1 (en) * | 1985-01-18 | 1986-07-24 | Forschungsinstitut für Edelmetalle und Metallchemie, 7070 Schwäbisch Gmünd | Process for the oxidation of poorly degradable organic compounds, such as complexing agents and heavy metal complexes, in waste waters |
Non-Patent Citations (7)
| Title |
|---|
| - DE-Buch: GROMBACHER, HABERER, TRÜB: Handbuch der Wasserversogungstechnik. Oldenbourg-München, 1985,Abschn.2.7.2.3, S.867-868 * |
| - DE-Buch: J.KIEFER: Ultraviolette Strahlen. W.d. Gruyter, 1977, Abschn.3.2.4-3.2.4.2,S.59-62,66 * |
| - DE-Z: STACHEL,B. et.al.: Abbau von Organochlorver-bindungen durch UV-Bestrahlung bei gleichzeitiger Wasserstoffperoxid-Zugabe unter Wasserwerksbeding-ungen. In: gwf-wasser/abwasswer, 1982, S.190-194 * |
| - US-Zeitschriften: Chemical Abstracts: Vol., 109, 1988, Ref. 11146x * |
| DE-Z: BANDEMER, Th.: Aufbereitung von belastetem Rohwasser durch UV-Bestrahlung und Wasserstoff- peroxid-Eintrag. In: Wasser+Boden, 1988,S.194-198 * |
| Vol., 94, 1981, Ref. 20159c * |
| Vol., 97, Ref. 203019p * |
Cited By (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0436922A3 (en) * | 1990-01-09 | 1991-10-09 | Layer + Knoedler Abwassertechnik + Kunststoffbau Gmbh | Method and apparatus for treating effluent |
| EP0436922A2 (en) * | 1990-01-09 | 1991-07-17 | Layer + Knödler Abwassertechnik + Kunststoffbau Gmbh | Method and apparatus for treating effluent |
| DE4005488A1 (en) * | 1990-02-21 | 1991-08-22 | Wabner Dietrich | METHOD AND DEVICE FOR WATER DETOXIFICATION |
| DE4006234A1 (en) * | 1990-02-28 | 1991-08-29 | Goema Dr Goetzelmann Physikali | METHOD FOR DEGRADING POLLUTANTS CONTAINED IN A LIQUID |
| EP0453646A2 (en) * | 1990-02-28 | 1991-10-30 | GOEMA DR. GÖTZELMANN PHYSIKALISCH-CHEMISCHE PROZESSTECHNIK GmbH | Process for degrading noxious matters containing liquid. |
| EP0453646A3 (en) * | 1990-02-28 | 1991-12-18 | Goema Dr. Goetzelmann Physikalisch-Chemische Prozesstechnik Hmbh | Process for degrading noxious matters containing liquid |
| DE4031609A1 (en) * | 1990-03-16 | 1991-09-19 | Kodak Ag | METHOD AND DEVICE FOR PROCESSING LIQUID RESIDUES FROM PHOTOGRAPHIC PROCESSES |
| US5244570A (en) * | 1991-05-06 | 1993-09-14 | Champion International Corporation | Apparatus for treating wastewater |
| US5391297A (en) * | 1992-07-02 | 1995-02-21 | Solvay Umweltchemie Gmbh | Process for gas treatment and degermination and apparatus for simultaneously degerminating and treating a liquid with gas |
| EP0577031A1 (en) * | 1992-07-02 | 1994-01-05 | Solvay Umweltchemie GmbH | Method for gasifying and disinfection and device for simultaneously carrying out |
| US5424032A (en) * | 1992-07-23 | 1995-06-13 | Diversey Corporation | Method and apparatus for controlling microorganisms |
| WO1994002423A1 (en) * | 1992-07-23 | 1994-02-03 | Diversey Corporation | Method and apparatus for controlling microorganisms |
| FR2704543A1 (en) * | 1993-04-30 | 1994-11-04 | Kodak Pathe | Process for the treatment of photographic effluents by ultraviolet and hydrogen peroxide |
| EP0622339A1 (en) * | 1993-04-30 | 1994-11-02 | Kodak-Pathe | Process for treating photographic effluents by means of ultraviolet radiation and hydrogen peroxide |
| EP0634650A2 (en) * | 1993-07-12 | 1995-01-18 | Degussa Aktiengesellschaft | Method and device for determining continuously the concentration of hydrogen peroxide or oxidants therefor |
| EP0634650A3 (en) * | 1993-07-12 | 1996-01-10 | Degussa | Method and device for determining continuously the concentration of hydrogen peroxide or oxidants therefor. |
| EP0638523A1 (en) * | 1993-08-11 | 1995-02-15 | Brigitte Blümel | Water sterilising device especially for use by dentists and physicians |
| DE4326998A1 (en) * | 1993-08-11 | 1995-02-16 | Johannes Alfred Finger | Water disinfection system, essentially consisting of filter and radiation devices, for removing physical and bacteriological water contamination |
| EP0696552A1 (en) | 1994-08-08 | 1996-02-14 | Kodak-Pathe | Process for treating photographic effluents using ultraviolet and hydrogen peroxide |
| DE19512908A1 (en) * | 1995-04-06 | 1996-10-10 | Abb Patent Gmbh | Monitoring industrial waste outflow for heavy metal content |
| DE19512908C2 (en) * | 1995-04-06 | 1998-08-27 | Abb Patent Gmbh | Waste water analysis method |
| DE19530086C2 (en) * | 1995-08-16 | 1998-08-20 | Robert Prof Dr Fleischmann | Process for the physical-chemical process water treatment of surface and waste water |
| DE19530086A1 (en) * | 1995-08-16 | 1997-02-20 | Robert Prof Dr Fleischmann | Treatment of surface or waste water |
| WO1998042624A1 (en) * | 1997-06-23 | 1998-10-01 | Soloviev, Evgeny Vladimirovich | Method and device for uv treatment of liquid, air and surface |
| US6264802B1 (en) | 1997-06-23 | 2001-07-24 | Alexandr Semenovich Kamrukov | Method and device for UV treatment of liquids, air and surfaces |
| FR2795713A1 (en) * | 1999-07-01 | 2001-01-05 | Suez Lyonnaise Des Eaux | METHOD FOR CONDUCTING URBAN WASTEWATER TREATMENT PLANTS BASED ON CHARGE INDICATIONS |
| WO2001002306A1 (en) * | 1999-07-01 | 2001-01-11 | Suez Lyonnaise Des Eaux | Method for managing urban wastewater based on indications on pollutants |
| DE10124816A1 (en) * | 2001-05-21 | 2002-12-05 | Miele & Cie | Process for the disinfection of fresh or used water used as a rinsing liquid for a program-controlled automatic washing machine |
| DE102004037927A1 (en) * | 2004-08-04 | 2006-03-16 | Polyplan Gmbh | Process and assembly to determine the quantity of biological impurities in swimming pool water by reaction with agent |
| DE102004037927B4 (en) * | 2004-08-04 | 2011-04-07 | Polyplan Gmbh | Method and device for determining the biological contaminants of water |
| WO2007012442A1 (en) * | 2005-07-27 | 2007-02-01 | Jung & Co. Gerätebau GmbH | Disinfection device having a uv light source |
| DE102009040429A1 (en) * | 2009-09-07 | 2011-03-24 | Tetra Gmbh | Purification of maintenance water by generation of hydroxyl radicals |
| EP2475622A1 (en) * | 2009-09-07 | 2012-07-18 | Tetra GmbH | Continuous purification of aquaculture water holding aquatic animals and/or aquatic plants |
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