CA2132930A1 - Uv water sterilizer with turbulence generator - Google Patents
Uv water sterilizer with turbulence generatorInfo
- Publication number
- CA2132930A1 CA2132930A1 CA 2132930 CA2132930A CA2132930A1 CA 2132930 A1 CA2132930 A1 CA 2132930A1 CA 2132930 CA2132930 CA 2132930 CA 2132930 A CA2132930 A CA 2132930A CA 2132930 A1 CA2132930 A1 CA 2132930A1
- Authority
- CA
- Canada
- Prior art keywords
- chamber
- fluid
- baffles
- baffle
- source
- 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.)
- Abandoned
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 31
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 230000005855 radiation Effects 0.000 claims abstract description 14
- 230000005865 ionizing radiation Effects 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims abstract 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 7
- 230000001954 sterilising effect Effects 0.000 claims description 4
- 229910052703 rhodium Inorganic materials 0.000 claims description 3
- 239000010948 rhodium Substances 0.000 claims description 3
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 239000004599 antimicrobial Substances 0.000 abstract description 2
- 239000010453 quartz Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000009182 swimming Effects 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
- B01J19/122—Incoherent waves
- B01J19/123—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
- C02F2201/328—Having flow diverters (baffles)
Landscapes
- Chemical & Material Sciences (AREA)
- Toxicology (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Physical Water Treatments (AREA)
Abstract
A sterilizer for water and other fluids employs ionizing radiation as an antimicrobial agent. The sterilizer is housed within an elongate exposure chamber, which houses a radiation source such as UV lamp. An array of flat baffles spans the interior of the chamber, with each baffle partly blocking the passage of fluid as it flows through the chamber along its elongate axis. Each baffle is provided with a channel to permit fluid to flow past the baffle, with the channels of neighbouring baffles being offset from each other to generate a sinuous and turbulent flow of fluid as it traverses the length of the chamber. The fluid stream is sequentially diverted towards and away from the radiation source.
Description
UV WATER STERILIZER WITH TURBULENCE GENERATOR
FIELD OF THE INVENTION
The present invention relates to a water sterilizer that employs a source of ionizing radiation, such as UV, for the sterilization of a fluid. The sterilizer may comprise a ~dual mode~ sterilizer that utilizes a single UV
lamp to simultaneously irradiate the contaminated water and generate ozone from air exposed to the radiation.
BACKGROUND OF THE INVENTION
Ultra-violet-based sterilizers enjoy a variety of uses, including purification of effluent from industrial processes and portable facilities, such as are found on boats, as well as sterilization of circulating water in hot tubs and swimming pools. Such sterilizers typically comprise an exposure chamber, within which an ultraviolet lamp or other source of ionizing radiation is positioned.
Alternately, the lamp may be positioned outside the chamber, with radiation entering through a quartz window.
A stream of contaminated liquid is channelled through the chamber, therein to be exposed to UV radiation on a continuous basis, and discharged.
The efficacy of such devices depends in part on ensuring that most of the water entering the device is thoroughly exposed to radiation. This may be accomplished by a sequential exposure means, for example with the exposure chamber comprising a tube, with the water entering one end and exiting the other. Means may be provided to maximize the amount of water passing directly in front of the UV lamp or quartz window. This may be accomplished by generating turbulence within the stream or by channelling the stream to maximize such contact.
The ob;ect of the present invention is to provide a water purifier that maximizes the portion of water exposed to the ionizing radiation generated by the UV lamp or other radiation source of the device.
SUMMARY OF THE INVENTION
The present invention comprises a sterilizer for water and other fluids employing ionizing radiation as an antimicrobial agent. The sterilizer is housed within an elongate exposure chamber having an entry and exit at opposing ends thereof, with the fluid passing through the device being exposed therein to ionizing radiation. An array of generally flat baffles is positioned within the chamber, each of which partly blocks the passage of fluid along the elongate axis of the chamber. Each baffle is configured to provide a channel to allow the passage of fluid past the baffle, with the channels of neighbouring ,, baffles being offset from each other to generate a sinuous and turbulent flow of fluid as it traverses the length of the chamber. This ensures that the flow is repeatedly brought within close proximity of the radiation source as the flow traverses the length of the chamber. The baffles may be coated with rhodium to increase the reflectivity thereof.
The radiation source may comprise a W tube positioned coaxially within the interior of the chamber, with the baffles comprising an array of generally flat toroidal disks. The channel is positioned between the between the rim of each baffle and the wall of the chamber, and comprises a flattened portion of the rim of the baffle.
The UV tube in this arrangement may be housed within a cylindrical quartz housing sealingly isolated from the chamber, with an air stream being channelled through the housing for the continuous generation of ozone by the operation of the Uv light. The ozone may then be combined with the contaminated water for the further purification thereof. This type of sterilizer is referred to herein as a "dual mode" sterilizer.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a side elevational view, in section, of a sterilizing apparatus according to the present invention;
, Figure 2 is a perspective view, partly cut away, of the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMsoDIMENT
Referring to Figures 1 and 2, a dual mode sterilizer according to the present invention is housed within a stainless steel cylindrical housing 1. The housing may be positioned with its longitudinal axis oriented vertically, although it will be understood that any orientation is possible. The directional references herein refer to the device in its usual vertical orientation. The ends of the housing 1 are sealed with upper and lower caps 2 and 4, respectively. A tubular air chamber 6 is positioned coaxially within the interior of the housing and extends the length thereof. The air chamber is sealingly engaged to the upper and lower caps by way of o-ring seals 10. The air chamber 6 houses a cylindrical Uv lamp 12 that extends the length of the chamber, with its upper and lower ends extending from the housing for connection to a power source, not shown. The wall 14 of the air chamber is fabricated from quartz, to allow the lamp to expose the interior of the housing. An air current may be channelled through the air chamber, for the co-production of ozone.
the ozone may in turn be reacted with the contaminated water either prior or subsequent to the treatment of the water with UV radiation by the device. An air supply tube 16 provides a current of air within the air chamber, which exits the chamber through an air vent tube 18 for later combination with the contaminated water to provide additional antimicrobial action. An external ozone reaction chamber, not shown, may be provided to combine the ozonated air with contaminated water, either before or after the water passes through the present device.
The space between the air chamber and the interior wall of the housing comprises a water jacket 20.
Contaminated water enters the water jacket 20 by way of an entry pipe 24, extending horizontally from adjacent the lower end of the housing 1, and exits the chamber by way of exit pipe 26, positioned adjacent the upper end of the housing. The entry pipe is linked to a source of contaminated water, not shown. The water may be driven through the device by means of a pump, not shown.
The flow of water through the water jacket is impeded by a series of toroidal disks 30 positioned coaxially within the interior of the housing and spanning the width of the housing. The edges of the disks substantially contact the interior walls of the housing and the exterior of the air chamber. The disk each comprise a metal plate, that may be coated with rhodium to improve the UV
reflectivity thereof. The outside edge of each disk is provided with a channel portion 32 to permit the passage of ~, water past the disk. The channel portion 32 is shown here as comprising a flattened portion, whereby a gap is maintained between the edge of the disk and the interior chamber wall. It will be understood that any type of recessed portion, or other type of channel through the baffle adjacent the edge thereof, may be employed. The channel portions of neighbouring disks are positioned on opposing sides of the housing, with the array of disks thereby serving as a series of baffles to force the water to follow a sinuous path as it travels the length of the housing.
The sinuous nature of the path of the water stream diverts much of the water passing through the device into close proximity of the wall of the inner chamber, there to receive a relatively high dose of radiation. As well, the disks generate a degree of turbulence within the water stream, to further increase the contact of the water with the wall of the air chamber.
Although the present invention has been described by way of a preferred embodiment thereof, it will be seen by those skilled in the art to which this invention relates that modifications and alternate variations may be made to the invention, without departing from the spirit and scope thereof as defined by the appended claims.
FIELD OF THE INVENTION
The present invention relates to a water sterilizer that employs a source of ionizing radiation, such as UV, for the sterilization of a fluid. The sterilizer may comprise a ~dual mode~ sterilizer that utilizes a single UV
lamp to simultaneously irradiate the contaminated water and generate ozone from air exposed to the radiation.
BACKGROUND OF THE INVENTION
Ultra-violet-based sterilizers enjoy a variety of uses, including purification of effluent from industrial processes and portable facilities, such as are found on boats, as well as sterilization of circulating water in hot tubs and swimming pools. Such sterilizers typically comprise an exposure chamber, within which an ultraviolet lamp or other source of ionizing radiation is positioned.
Alternately, the lamp may be positioned outside the chamber, with radiation entering through a quartz window.
A stream of contaminated liquid is channelled through the chamber, therein to be exposed to UV radiation on a continuous basis, and discharged.
The efficacy of such devices depends in part on ensuring that most of the water entering the device is thoroughly exposed to radiation. This may be accomplished by a sequential exposure means, for example with the exposure chamber comprising a tube, with the water entering one end and exiting the other. Means may be provided to maximize the amount of water passing directly in front of the UV lamp or quartz window. This may be accomplished by generating turbulence within the stream or by channelling the stream to maximize such contact.
The ob;ect of the present invention is to provide a water purifier that maximizes the portion of water exposed to the ionizing radiation generated by the UV lamp or other radiation source of the device.
SUMMARY OF THE INVENTION
The present invention comprises a sterilizer for water and other fluids employing ionizing radiation as an antimicrobial agent. The sterilizer is housed within an elongate exposure chamber having an entry and exit at opposing ends thereof, with the fluid passing through the device being exposed therein to ionizing radiation. An array of generally flat baffles is positioned within the chamber, each of which partly blocks the passage of fluid along the elongate axis of the chamber. Each baffle is configured to provide a channel to allow the passage of fluid past the baffle, with the channels of neighbouring ,, baffles being offset from each other to generate a sinuous and turbulent flow of fluid as it traverses the length of the chamber. This ensures that the flow is repeatedly brought within close proximity of the radiation source as the flow traverses the length of the chamber. The baffles may be coated with rhodium to increase the reflectivity thereof.
The radiation source may comprise a W tube positioned coaxially within the interior of the chamber, with the baffles comprising an array of generally flat toroidal disks. The channel is positioned between the between the rim of each baffle and the wall of the chamber, and comprises a flattened portion of the rim of the baffle.
The UV tube in this arrangement may be housed within a cylindrical quartz housing sealingly isolated from the chamber, with an air stream being channelled through the housing for the continuous generation of ozone by the operation of the Uv light. The ozone may then be combined with the contaminated water for the further purification thereof. This type of sterilizer is referred to herein as a "dual mode" sterilizer.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a side elevational view, in section, of a sterilizing apparatus according to the present invention;
, Figure 2 is a perspective view, partly cut away, of the invention.
DETAILED DESCRIPTION OF THE PREFERRED EMsoDIMENT
Referring to Figures 1 and 2, a dual mode sterilizer according to the present invention is housed within a stainless steel cylindrical housing 1. The housing may be positioned with its longitudinal axis oriented vertically, although it will be understood that any orientation is possible. The directional references herein refer to the device in its usual vertical orientation. The ends of the housing 1 are sealed with upper and lower caps 2 and 4, respectively. A tubular air chamber 6 is positioned coaxially within the interior of the housing and extends the length thereof. The air chamber is sealingly engaged to the upper and lower caps by way of o-ring seals 10. The air chamber 6 houses a cylindrical Uv lamp 12 that extends the length of the chamber, with its upper and lower ends extending from the housing for connection to a power source, not shown. The wall 14 of the air chamber is fabricated from quartz, to allow the lamp to expose the interior of the housing. An air current may be channelled through the air chamber, for the co-production of ozone.
the ozone may in turn be reacted with the contaminated water either prior or subsequent to the treatment of the water with UV radiation by the device. An air supply tube 16 provides a current of air within the air chamber, which exits the chamber through an air vent tube 18 for later combination with the contaminated water to provide additional antimicrobial action. An external ozone reaction chamber, not shown, may be provided to combine the ozonated air with contaminated water, either before or after the water passes through the present device.
The space between the air chamber and the interior wall of the housing comprises a water jacket 20.
Contaminated water enters the water jacket 20 by way of an entry pipe 24, extending horizontally from adjacent the lower end of the housing 1, and exits the chamber by way of exit pipe 26, positioned adjacent the upper end of the housing. The entry pipe is linked to a source of contaminated water, not shown. The water may be driven through the device by means of a pump, not shown.
The flow of water through the water jacket is impeded by a series of toroidal disks 30 positioned coaxially within the interior of the housing and spanning the width of the housing. The edges of the disks substantially contact the interior walls of the housing and the exterior of the air chamber. The disk each comprise a metal plate, that may be coated with rhodium to improve the UV
reflectivity thereof. The outside edge of each disk is provided with a channel portion 32 to permit the passage of ~, water past the disk. The channel portion 32 is shown here as comprising a flattened portion, whereby a gap is maintained between the edge of the disk and the interior chamber wall. It will be understood that any type of recessed portion, or other type of channel through the baffle adjacent the edge thereof, may be employed. The channel portions of neighbouring disks are positioned on opposing sides of the housing, with the array of disks thereby serving as a series of baffles to force the water to follow a sinuous path as it travels the length of the housing.
The sinuous nature of the path of the water stream diverts much of the water passing through the device into close proximity of the wall of the inner chamber, there to receive a relatively high dose of radiation. As well, the disks generate a degree of turbulence within the water stream, to further increase the contact of the water with the wall of the air chamber.
Although the present invention has been described by way of a preferred embodiment thereof, it will be seen by those skilled in the art to which this invention relates that modifications and alternate variations may be made to the invention, without departing from the spirit and scope thereof as defined by the appended claims.
Claims (8)
1. An apparatus for sterilizing a contaminated fluid, comprising:
a) a source of ionizing radiation;
b) an elongate exposure chamber having an entry and exit at opposing ends thereof for the exposure of a stream of fluid passing through said chamber to ionizing radiation generated by said source;
c) an array of baffles positioned within the chamber, each of said baffles partly blocking the passage of fluid along the elongate axis of the chamber and having a channel to allow the passage of fluid past the baffle, with the channels of neighbouring baffles being offset from each other to generate a sinuous and turbulent flow of fluid sequentially diverted towards and away from the source of radiation as the fluid traverses the length of the chamber.
a) a source of ionizing radiation;
b) an elongate exposure chamber having an entry and exit at opposing ends thereof for the exposure of a stream of fluid passing through said chamber to ionizing radiation generated by said source;
c) an array of baffles positioned within the chamber, each of said baffles partly blocking the passage of fluid along the elongate axis of the chamber and having a channel to allow the passage of fluid past the baffle, with the channels of neighbouring baffles being offset from each other to generate a sinuous and turbulent flow of fluid sequentially diverted towards and away from the source of radiation as the fluid traverses the length of the chamber.
2. An apparatus as claimed in claim 1, wherein said radiation source comprises an ultraviolet lamp positioned within the interior of the chamber.
3. An apparatus as claimed in claim 2, wherein said ultraviolet lamp is tubular and is positioned coaxially with and along substantially the full length of said chamber.
4. An apparatus as claimed in claim 3 wherein said lamp is housed within an elongate air chamber, having air channels entering and exiting said air chamber for the coproduction of ozone.
5. An apparatus as claimed in claim 1, wherein said radiation source is tubular and positioned coaxially within said chamber, and said baffles each comprise a toroidal disk.
6. An apparatus as claimed in claim 5, wherein said channel comprises a recessed portion at the outside rim of said disk, to provide a channel between the rim of the disk and the interior wall of the chamber.
7. An apparatus as claimed in claim 1, wherein at least one of said channels is positioned adjacent an outside edge of said baffle.
8. An apparatus as claimed in claim 1, wherein at least one of said baffles is provided with a rhodium coating.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16077193A | 1993-12-03 | 1993-12-03 | |
| US08/160,771 | 1993-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2132930A1 true CA2132930A1 (en) | 1995-06-04 |
Family
ID=22578370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2132930 Abandoned CA2132930A1 (en) | 1993-12-03 | 1994-09-26 | Uv water sterilizer with turbulence generator |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU7850194A (en) |
| CA (1) | CA2132930A1 (en) |
| WO (1) | WO1995015294A1 (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK1337280T3 (en) * | 2000-11-13 | 2013-12-02 | Bayer Ip Gmbh | METHOD OF INACTIVATING MICROORGANISMS IN A FLUID USING ULTRAVIOL RADIATION |
| WO2003024873A1 (en) * | 2001-09-18 | 2003-03-27 | Photoscience Japan Corporation | Ultraviolet water treatment apparatus with dome-shaped baffle |
| US10343939B2 (en) | 2006-06-06 | 2019-07-09 | Evoqua Water Technologies Llc | Ultraviolet light activated oxidation process for the reduction of organic carbon in semiconductor process water |
| US12103874B2 (en) | 2006-06-06 | 2024-10-01 | Evoqua Water Technologies Llc | Ultraviolet light activated oxidation process for the reduction of organic carbon in semiconductor process water |
| DE202006015958U1 (en) * | 2006-10-18 | 2007-04-05 | Hydrotec Gesellschaft für Ökologische Verfahrenstechnik mbH | UV-treatment device for the sterilization of drinking or industrial water, comprises housing interior or treatment chamber, ports for supplying and discharging the medium from the treatment chamber and a UV-emitter arranged in the chamber |
| US8961798B2 (en) | 2007-04-03 | 2015-02-24 | Evoqua Water Technologies Llc | Method for measuring a concentration of a compound in a liquid stream |
| US8741155B2 (en) | 2007-04-03 | 2014-06-03 | Evoqua Water Technologies Llc | Method and system for providing ultrapure water |
| US9365435B2 (en) | 2007-04-03 | 2016-06-14 | Evoqua Water Technologies Llc | Actinic radiation reactor |
| US9365436B2 (en) | 2007-04-03 | 2016-06-14 | Evoqua Water Technologies Llc | Method of irradiating a liquid |
| US9725343B2 (en) | 2007-04-03 | 2017-08-08 | Evoqua Water Technologies Llc | System and method for measuring and treating a liquid stream |
| EP2284126A1 (en) * | 2009-08-13 | 2011-02-16 | Koninklijke Philips Electronics N.V. | Device comprising flow guides and a source for emitting ultraviolet light |
| MX338064B (en) * | 2010-06-07 | 2016-04-01 | Genzyme Corp | Device for viral inactivation of liquid media. |
| US20110318237A1 (en) * | 2010-06-26 | 2011-12-29 | Richard Woodling | Ultraviolet reactor baffle design for advanced oxidation process and ultraviolet disinfection |
| EP2527301B1 (en) | 2011-05-26 | 2016-04-27 | Evoqua Water Technologies GmbH | Method and arrangement for a water treatment |
| CA2918564C (en) | 2015-01-21 | 2023-09-19 | Evoqua Water Technologies Llc | Advanced oxidation process for ex-situ groundwater remediation |
| US11161762B2 (en) | 2015-01-21 | 2021-11-02 | Evoqua Water Technologies Llc | Advanced oxidation process for ex-situ groundwater remediation |
| NO344853B1 (en) | 2015-07-02 | 2020-06-02 | Vetco Gray Scandinavia As | Method and system for water injection into an oil and/or gas containing subterranean formation |
| GB2548379B (en) * | 2016-03-16 | 2019-06-05 | Cathelco Ltd | UV Reactor |
| JP6610384B2 (en) * | 2016-03-30 | 2019-11-27 | ウシオ電機株式会社 | Water treatment equipment |
| CN105967271A (en) * | 2016-07-06 | 2016-09-28 | 圆融健康科技（深圳）有限公司 | Waterflow sterilization device |
| CN110300733B (en) * | 2017-02-23 | 2022-11-01 | 默克专利股份公司 | Flow-through fluid purification device |
| US11286179B2 (en) | 2017-02-23 | 2022-03-29 | Merck Patent Gmbh | Flow-through fluid purification device and means for accommodating a radiation source |
| DE102017104273A1 (en) * | 2017-03-01 | 2018-09-06 | Eta Plus Electronic Gmbh | Device for UV irradiation of a flowing medium |
| EP4039894B1 (en) * | 2021-02-08 | 2023-07-12 | WS Produktentwicklung GmbH & Co. KG | Device for sterilizing drinking water |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1212633A (en) * | 1968-04-03 | 1970-11-18 | Erex Hydro Engineering Pty Ltd | Improvements relating to the irradiation of fluids |
| JPS5212378A (en) * | 1975-07-19 | 1977-01-29 | Yoshida Kogyo Kk | Structure of connecting net |
| IT1123509B (en) * | 1979-07-31 | 1986-04-30 | Vighi Temistocle | PLANT FOR THE STERILIZATION OF LIQUIDS IN GENERAL BY ULTRAVIOLET RADIATION AND RELATED PROCEDURE |
| JPS59150589A (en) * | 1983-02-17 | 1984-08-28 | Raizaa Kogyo Kk | Purification of service or waste water and apparatus therefor |
| US4897246A (en) * | 1988-09-13 | 1990-01-30 | Peroxidation Systems, Inc. | Oxidation chamber |
| JP2696636B2 (en) * | 1992-02-05 | 1998-01-14 | 株式会社東芝 | UV irradiation device with mixed flow plate |
-
1994
- 1994-09-26 CA CA 2132930 patent/CA2132930A1/en not_active Abandoned
- 1994-10-17 WO PCT/CA1994/000565 patent/WO1995015294A1/en active Application Filing
- 1994-10-17 AU AU78501/94A patent/AU7850194A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| AU7850194A (en) | 1995-06-19 |
| WO1995015294A1 (en) | 1995-06-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |