DE19963649A1 - Water disinfecting device comprises filter cartridge whose inner surface has photocatalytic activity and UV lamp positioned inside it - Google Patents
Water disinfecting device comprises filter cartridge whose inner surface has photocatalytic activity and UV lamp positioned inside itInfo
- Publication number
- DE19963649A1 DE19963649A1 DE19963649A DE19963649A DE19963649A1 DE 19963649 A1 DE19963649 A1 DE 19963649A1 DE 19963649 A DE19963649 A DE 19963649A DE 19963649 A DE19963649 A DE 19963649A DE 19963649 A1 DE19963649 A1 DE 19963649A1
- Authority
- DE
- Germany
- Prior art keywords
- water
- disinfection
- photocatalytic activity
- water according
- positioned inside
- 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.)
- Withdrawn
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 13
- 230000000249 desinfective effect Effects 0.000 title claims abstract description 4
- 238000004659 sterilization and disinfection Methods 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims 1
- 239000011941 photocatalyst Substances 0.000 description 9
- 229910010413 TiO 2 Inorganic materials 0.000 description 5
- 244000052616 bacterial pathogen Species 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007146 photocatalysis Methods 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000007788 roughening Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 238000004630 atomic force microscopy Methods 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001782 photodegradation Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
- C02F1/325—Irradiation devices or lamp constructions
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
- C02F2201/322—Lamp arrangement
- C02F2201/3223—Single elongated lamp located on the central axis of a turbular reactor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
Landscapes
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Description
Die Entkeimung von Wasser ist eine wichtige Aufgabe. Übliche Verfahren wie Zusatz von Chlor oder Bestrahlung mit sehr kurzwelligem ultravioletten Licht zeigen Nachteile durch die Verwendung oder Entstehung sehr aggressiver und ihrerseits gesundheitsschädigen der Stoffe (Ozon).The disinfection of water is an important task. Usual procedures such as adding Chlorine or radiation with very short-wave ultraviolet light have disadvantages the use or emergence of very aggressive and in turn harmful to health of substances (ozone).
Die Nutzung ultravioletter Strahlung in einem Wellenlängenbereich, in dem noch kein
Ozon gebildet wird, ist möglich, wenn Photokatalyse ausgeführt wird. Die Photokatalyse -
insbesondere am Titandioxid - ist recht gut untersucht, z. B. in
[1] A. Heller: Chemistry and Applications of Photocatalytic Oxidation of Thin Organic Films.
Acc. Chem. Res., Vol. 28, No. 12 (1995) 503
[2] Y. Toshinobu, et. al.: Photoelectrochemical properties of TiO2 coating films prepared
using different solvents by the sol-gel method. Thin Solid Films 283 (1996) 188
[3] D. Thompson, et. al.: Sensitization of Nanocrystalline TiO2 Initiated by Reductive
Quenching of Molecular Exited States. Langmuir 15 (1999) 650
[4] C. Paulus, et. al.: Auswirkungen einer Eisendotierung auf die photokatalytischen
Eigenschaften von nanoskaligem Titandioxid. Universität des Saarlandes, FB
Physikalische Chemie
[5] K. O'Shea, et. al.: The Influence of Mineralization Products on the Coagulation of TiO2
Photocatalyst. Langmuir 15 (1999) 2071
[6] D. Bahnemann: Photocatalytic Detoxification of Polluted Waters. The Handbook of
Environmental Chemistry, Springer Verlag 1999, Volume 2, Part L, 285-351
[7] P. Sawunyama, et. al.: Photocatalysis on TiO2 Surfaces lnvestigated by Atomic Force
Microscopy: Photodegradation of Partial and Full Monolayers of Stearic Acid on TiO2.
Langmuir 15 (1999) 3551.The use of ultraviolet radiation in a wavelength range in which ozone has not yet formed is possible if photocatalysis is carried out. Photocatalysis - especially on titanium dioxide - has been studied quite well, e.g. B. in
[1] A. Heller: Chemistry and Applications of Photocatalytic Oxidation of Thin Organic Films. Acc. Chem. Res., Vol. 28, No. 12 (1995) 503
[2] Y. Toshinobu, et. al .: Photoelectrochemical properties of TiO 2 coating films prepared using different solvents by the sol-gel method. Thin Solid Films 283 (1996) 188
[3] D. Thompson, et. al .: Sensitization of Nanocrystalline TiO 2 Initiated by Reductive Quenching of Molecular Exited States. Langmuir 15 (1999) 650
[4] C. Paulus, et. al .: Effects of iron doping on the photocatalytic properties of nanoscale titanium dioxide. Saarland University, Department of Physical Chemistry
[5] K. O'Shea, et. al .: The Influence of Mineralization Products on the Coagulation of TiO 2 Photocatalyst. Langmuir 15 (1999) 2071
[6] D. Bahnemann: Photocatalytic Detoxification of Polluted Waters. The Handbook of Environmental Chemistry, Springer Verlag 1999, Volume 2, Part L, 285-351
[7] P. Sawunyama, et. al .: Photocatalysis on TiO 2 Surfaces invested by Atomic Force Microscopy: Photodegradation of Partial and Full Monolayers of Stearic Acid on TiO 2 . Langmuir 15 (1999) 3551.
Sehr häufig wird der Photokatalysator im Wasser suspendiert. Genannt werden Korn größen um 1 µm. Die photokatalytische Aufbereitung bringt bei diesem Vorgehen deutlich positive Ergebnisse. Die Suspension ist aber sehr stabil. Der Aufwand muß dann für die Entfernung des Photokatalysators aus dem Wasser aufgebracht werden. So daß insge samt nur ein wenig praktikabler Prozeß vorliegt.The photocatalyst is very often suspended in water. Grains are called sizes around 1 µm. The photocatalytic preparation clearly shows with this procedure positive results. The suspension is very stable. The effort must then be for the Removal of the photocatalyst can be applied from the water. So that in total including only a little practical process.
Entsprechend groß sind die Bemühungen, den Photokatalysator zu fixieren. Dafür existie ren verschiedene Vorschläge. Generell wurde aber festgestellt, daß ein fixierter Photokatalysator wesentlich schlechteren Wirkungsgrad für die Zersetzung aufweist. Vermutet wird als Ursache, daß die Oberfläche eines fixierten Photokatalysators im Vergleich zur Oberfläche eines suspendierten Pulvers wesentlich kleiner ist. Dementsprechend existieren Vorschläge, den Photokatalysator auf rauhen Oberflächen aufzubringen (EP 0911078), um dadurch die wirksame Oberfläche zu vergrößern. Es ist eine gewisse Zunahme des Wirkungsgrades durch Aufrauhung zwar festzustellen - der Wirkungsgrad ist aber immer noch deutlich kleiner als bei Anwendung eines suspendierten Photokatalysators. The efforts to fix the photocatalyst are correspondingly great. For that exist various suggestions. In general, however, it was found that a fixed Photocatalyst has much poorer efficiency for the decomposition. It is believed that the cause is that the surface of a fixed photocatalyst in the Compared to the surface of a suspended powder is much smaller. Accordingly, there are proposals to use the photocatalyst on rough surfaces to apply (EP 0911078), thereby increasing the effective surface. It is to notice a certain increase in efficiency through roughening Efficiency is still significantly lower than when using one suspended photocatalyst.
Aufgabe der Erfindung ist es nun, eine Vorrichtung zur Entkeimung von Wasser zu schaf fen, welche einen fixierten Photokatalysator und einen hohen Wirkungsgrad der photokatalytischen Zersetzung aufweist.The object of the invention is to create a device for disinfecting water fen, which have a fixed photocatalyst and high efficiency has photocatalytic decomposition.
Der Erfindung liegt die Überlegung zugrunde, daß die Größe der Oberfläche des Photoka talysators nur indirekt den Wirkungsgrad beeinflussen kann. Angenommen es werde ultra violettes Licht absorbiert und führe zu einer photokatalytischen Radikalbildung. Dann ist die Anzahl der Radikale proportional der Anzahl der absorbierten Photonen. Irgendeine Oberflächengröße ist hier physikalisch neutral. Bei gleicher Bestrahlungsstärke steigt zwar die Anzahl der Photonen mit der Fläche. Umgedreht sinkt aber bei gleicher Lampenleistung die Bestrahlungsstärke mit steigender Fläche. So daß insgesamt die Anzahl der absorbierten Photonen unabhängig von der Fläche ist.The invention is based on the consideration that the size of the surface of the photoka talysators can only indirectly affect the efficiency. Suppose it is ultra violet light is absorbed and leads to photocatalytic radical formation. Then the number of radicals proportional to the number of photons absorbed. Any Surface size is physically neutral here. With the same irradiance increases the number of photons with the area. Upside down, however, the same decreases Lamp power the irradiance with increasing area. So that the total Number of photons absorbed is independent of the area.
Der geringe Wirkungsgrad bei fixierten Katalysatoren läßt sich dann nur dadurch erklären, daß die Radikale bei den üblichen Anordnungen zwar gebildet werden, aber nicht transportiert werden zu den Keimen oder Substanzen, welche eliminiert werden sollen. Wenn die Radikale sich durch Diffusion bewegen ist die Wahrscheinlichkeit sehr groß, daß sie aufeinander stoßen. Damit ist die Möglichkeit gegeben, daß die Radikale untereinander reagieren und damit die Konzentration der Radikale in Abhängigkeit von der zu überbrückenden Entfernung zwischen dem Entstehungsort der Radikale und den zu zerstörenden Keimen dramatisch abnimmt (anzunehmen ist ein exponentieller Abfall). Die im Stand der Technik genannte Aufrauhung der Oberfläche verringert die Entfernung etwas - kann aber keine vollständige Lösung bieten, weil weit entfernte Flüssigkeitsvolumi na sich von der Rauhigkeit kaum beeinflussen lassen.The low efficiency with fixed catalysts can only be explained by that the radicals are formed in the usual arrangements, but not are transported to the germs or substances that are to be eliminated. If the radicals move through diffusion, the probability is very high that they collide. This gives the possibility that the radicals react with each other and thus the concentration of the radicals depending on the to bridge the distance between the origin of the radicals and the destructive germs decreases dramatically (an exponential drop is expected). The roughening of the surface mentioned in the prior art reduces the removal something - but cannot offer a complete solution because of the distant volume of liquid na can hardly be influenced by the roughness.
Statt dessen läßt sich die Aufgabe der Erfindung lösen, indem man eine Vorrichtung vor sieht, welche Zulauf (11) und Ablauf (12) aufweist, mindestens eine ultraviolettes Licht emittierende Lampe (30) aufweist und einen Körper (21) mit photoaktiver Oberfläche (22) aufweist, dadurch gekennzeichnet daß der Körper mit photoaktiver Oberfläche derart für den Wasserstrom durchlässig gestaltet ist, daß der Wasserstrom in eine Vielzahl von Ein zelströmungen aufgeteilt wird und der Körper zwischen Zulauf und Ablauf so angeordnet ist, daß nahezu die gesamte Wassermenge durch den Körper hindurchströmt und die Ein zelströmungen in der Nähe von photoaktiven Oberflächenbereichen auftreten, welche von dem Licht der ultraviolett emittierenden Lampe beleuchtet werden.Instead, the object of the invention can be achieved by providing a device which has inlet ( 11 ) and outlet ( 12 ), has at least one ultraviolet light-emitting lamp ( 30 ) and a body ( 21 ) with a photoactive surface ( 22 ), characterized in that the body with a photoactive surface is designed to be permeable to the water flow in such a way that the water flow is divided into a plurality of individual flows and the body is arranged between the inlet and outlet in such a way that almost the entire amount of water flows through the body and the individual currents occur in the vicinity of photoactive surface areas which are illuminated by the light of the ultraviolet-emitting lamp.
- 1. durch die Zwangsströmung die Radikale von ihrem Entstehungsort laufend wegtransportiert werden und insofern keine übermäßig großen Konzentrationen entste hen können, welche eine nutzlose Selbstzerstörung der Radikale begünstigen würden.1. running the radicals from their place of origin through the forced flow are transported away and therefore no excessive concentrations arise which would promote useless self-destruction of the radicals.
- 2. durch die Aufteilung in eine Vielzahl von Einzelströmungen die Keime in große Nähe zu dem Entstehungsort der Radikale gebracht werden - und mitschwimmend in der Nähe der Radikale bleiben - insofern die notwendige Diffusionslänge wesentlich verringert wird.2. by dividing them into a large number of individual currents, the germs in close proximity the origin of the radicals - and swimming nearby of radicals remain - insofar as the necessary diffusion length is significantly reduced becomes.
- 3. dadurch daß, nahezu die gesamte Wassermenge durch den Körper hindurchströmt, alle Keime im gesamten aufzubereitendem Volumen erfaßt werden.3. in that almost the entire amount of water flows through the body, all germs are recorded in the entire volume to be processed.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19963649A DE19963649A1 (en) | 1999-12-29 | 1999-12-29 | Water disinfecting device comprises filter cartridge whose inner surface has photocatalytic activity and UV lamp positioned inside it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19963649A DE19963649A1 (en) | 1999-12-29 | 1999-12-29 | Water disinfecting device comprises filter cartridge whose inner surface has photocatalytic activity and UV lamp positioned inside it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19963649A1 true DE19963649A1 (en) | 2001-07-12 |
Family
ID=7934919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19963649A Withdrawn DE19963649A1 (en) | 1999-12-29 | 1999-12-29 | Water disinfecting device comprises filter cartridge whose inner surface has photocatalytic activity and UV lamp positioned inside it |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19963649A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10150014A1 (en) * | 2001-10-11 | 2003-04-30 | Mario Boehme | Device for disinfecting water in swimming pools comprises swimming pool surface or liner modified for the purpose |
| WO2009072969A1 (en) * | 2007-12-05 | 2009-06-11 | Wallenius Water Aktiebolag | Device for treatment of fluids |
| WO2009142597A1 (en) * | 2008-05-21 | 2009-11-26 | Wallenius Water Aktiebolag | Filter arrangement |
| WO2010021551A1 (en) * | 2008-08-18 | 2010-02-25 | Sinvent As | Photo-catalytic membrane reactor |
| DE102008040336A1 (en) * | 2008-07-10 | 2010-05-12 | Brita Gmbh | Device for disinfecting water and using the same |
| NL2005569C2 (en) * | 2010-10-25 | 2012-04-26 | Erp Internat B V Van | DEVICE FOR PURIFYING WATER AND FILTER FOR USE IN SUCH DEVICE. |
| US9789427B2 (en) | 2008-06-27 | 2017-10-17 | Brita Gmbh | Apparatus for treating water, particularly filter apparatus, and cartridge |
| DE102021128275A1 (en) | 2021-10-29 | 2023-05-04 | Krones Aktiengesellschaft | Disinfection of a container treatment plant |
-
1999
- 1999-12-29 DE DE19963649A patent/DE19963649A1/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10150014A1 (en) * | 2001-10-11 | 2003-04-30 | Mario Boehme | Device for disinfecting water in swimming pools comprises swimming pool surface or liner modified for the purpose |
| DE10150014B4 (en) * | 2001-10-11 | 2006-05-24 | BÖHME, Mario | Swimming pool lining for disinfecting water |
| WO2009072969A1 (en) * | 2007-12-05 | 2009-06-11 | Wallenius Water Aktiebolag | Device for treatment of fluids |
| WO2009142597A1 (en) * | 2008-05-21 | 2009-11-26 | Wallenius Water Aktiebolag | Filter arrangement |
| US9789427B2 (en) | 2008-06-27 | 2017-10-17 | Brita Gmbh | Apparatus for treating water, particularly filter apparatus, and cartridge |
| DE102008040336A1 (en) * | 2008-07-10 | 2010-05-12 | Brita Gmbh | Device for disinfecting water and using the same |
| WO2010021551A1 (en) * | 2008-08-18 | 2010-02-25 | Sinvent As | Photo-catalytic membrane reactor |
| NL2005569C2 (en) * | 2010-10-25 | 2012-04-26 | Erp Internat B V Van | DEVICE FOR PURIFYING WATER AND FILTER FOR USE IN SUCH DEVICE. |
| DE102021128275A1 (en) | 2021-10-29 | 2023-05-04 | Krones Aktiengesellschaft | Disinfection of a container treatment plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8139 | Disposal/non-payment of the annual fee |