WO2017186510A1 - Dispositif de traitement par uv de fluide aqueux - Google Patents

Dispositif de traitement par uv de fluide aqueux Download PDF

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Publication number
WO2017186510A1
WO2017186510A1 PCT/EP2017/058942 EP2017058942W WO2017186510A1 WO 2017186510 A1 WO2017186510 A1 WO 2017186510A1 EP 2017058942 W EP2017058942 W EP 2017058942W WO 2017186510 A1 WO2017186510 A1 WO 2017186510A1
Authority
WO
WIPO (PCT)
Prior art keywords
treatment chamber
aqueous fluid
annular
chamber
slit opening
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
Application number
PCT/EP2017/058942
Other languages
English (en)
Inventor
Vipin ARORA
Debasis Mukherjee
Skand Saksena
Dnyaneshwar Yashwantrao WAGHMARE
Sandeep Kumar YADAV
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.)
Unilever NV
Conopco Inc
Original Assignee
Unilever NV
Conopco Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever NV, Conopco Inc filed Critical Unilever NV
Priority to CN201780026160.5A priority Critical patent/CN109071272B/zh
Publication of WO2017186510A1 publication Critical patent/WO2017186510A1/fr
Priority to PH12018502217A priority patent/PH12018502217A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—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
    • C02F1/006—Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks
    • 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
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/003—Coaxial constructions, e.g. a cartridge located coaxially within another
    • 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
    • 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)
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/02—Fluid flow conditions
    • C02F2301/022—Laminar
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/02—Fluid flow conditions
    • C02F2301/026—Spiral, helicoidal, radial
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection

Definitions

  • the invention relates to a device for disinfecting aqueous fluid by exposing the fluid to ultraviolet (UV) light. More particularly, the invention concerns to such a device comprising:
  • a treatment chamber comprising a cylindrical outer wall, said treatment chamber providing a passage for conveying aqueous fluid and providing exposure to UV-light emitted by the UV-lamp;
  • the invention further provides a method for disinfecting aqueous in a UV-treatment device.
  • UV treatment of water is a quick, reliable and cost effective method of disinfecting water for both point of use and point of entry.
  • UV water treatment uses ultraviolet light to kill micro-organisms that may be present in water. It is a proven technology that has no significant drawbacks. In some applications, its initial cost is a bit more than chlorination, but because of its low operating cost, it quickly pays for itself. It is environmentally friendly and essentially trouble-free. Most ultraviolet water treatment systems require only an annual change of lamp and a periodic change of the filter cartridge.
  • Devices for point-of-use UV-water treatment are commercially available. These devices have in common that water flows through a UV tank assembly past a source of UV-light. Depending on how the water is directed through the UV tank assembly, portions of the water flow may receive different UV-exposure. That is, portions of water that pass most quickly through the UV tank assembly tend to receive less UV light exposure than portions of water that take a slower path and have a longer residence time. Ideally, all the water would receive the same predetermined minimum dosage of UV light to ensure a desired kill or destruction rate without unnecessarily overexposing certain portions of the water flow. Without steady or plug flow through the UV tank assembly, this objective cannot be optimally met. Plug flow refers to a "plug" or mass of water moving together through the system. Plug flow avoids uneven flow rate of water through the system.
  • WO 00/06499 describes a point-of-use water treatment system comprising:
  • a housing generally enclosing the filter housing assembly and the tank assembly.
  • the treatment system may comprise a wedge shaped entrance chamber to cause incoming water to travel circumferentially.
  • the tank comprises a lower baffle plate and an upper vaned baffle plate.
  • a plurality of circular openings are located in the lower baffle plate to allow water to travel toward upper baffle plate in a spiral manner.
  • EP-A 0616 975 describes a point-of-use water treatment system for home use comprising:
  • a filter monitor for monitoring the amount of water flowing through said filter and providing an indication when said filter has reached end-of-life
  • a filter quick-disconnect for providing a user with the ability to change said filter in response to an indication from said filter monitor; and • a source quick-disconnect for providing a user with the ability to change said source of radiant energy in response to an indication from said radiant energy monitor.
  • the source of radiant energy comprises an ultraviolet discharge lamp having an elongate central axis and a diverter for providing a spiral plug flow of water about the discharge lamp.
  • WO 201 1/014717 describes a reactor for treating a fluid, comprising:
  • first, second and third baffle plates located within said vessel for forming first, second and third chambers, respectively wherein said first, second and third baffle plates include holes arranged in a predetermined pattern for controlling fluid flow in said vessel to provide plug flow.
  • WO 2012/014108 describes a device for subjecting a fluid to a disinfecting treatment by exposing the fluid to UV light, said device comprising a reactor having an inner space in which means for emitting ultraviolet light are arranged, an inlet for letting fluid into the inner space, and an outlet for letting out fluid from the inner space, wherein the light emission means comprise a single electrode, wherein a wall encompassing the inner space is adapted to function as an electrode and comprises electrically conductive material, and wherein the device further comprises means which also comprise electrically conductive material, and which are arranged for locally enhancing the electrical conductivity in a space between the reactor wall and the light emission means.
  • An element is arranged on an inlet side of the reactor, the closed central portion having the function of reducing the jet of water from the inlet, whereas the holes play a role in forming the flow of water.
  • the element can have a central hole for allowing the element to be positioned on an end portion of the lamp.
  • the element serves as a divider plate which has a role in avoiding that the water finds the fastest way toward the outlet.
  • US 2005/0056597 describes a system for treating a fluid comprising:
  • the system may comprise a plurality of baffles coupled to the treatment chamber, wherein the plurality of baffles provide for substantially uniform treatment of the fluid.
  • the present inventors have designed a device for UV-treatment of aqueous fluid that is extremely efficient in disinfecting said aqueous fluid, even at very high throughput.
  • the UV-treatment of aqueous fluid in the present device is very effective because the geometry of the devices ensure that exposure time to UV radiation is constant throughout the stream of aqueous fluid that is treated in the device.
  • the UV-treatment device of the present invention comprises:
  • a treatment chamber comprising a cylindrical outer wall, said treatment chamber providing a passage for conveying aqueous fluid and providing exposure to UV-light emitted by the UV-lamp;
  • Aqueous liquid passing through the treatment chamber is exposed to UV-light that is emitted by the tubular UV-lamp, resulting in disinfection of the aqueous fluid.
  • the cylindrical treatment chamber of the UV-treatment device is positioned around the UV-lamp, providing an annular passage to the aqueous fluid.
  • the cylindrical treatment chamber is positioned parallel to the tubular UV- light.
  • the inlet chamber comprises an inlet for aqueous fluid and is designed to transfer the incoming linear stream of aqueous fluid as an annular plug flow stream into the treatment chamber. To this end the inlet chamber comprises: an inlet for receiving aqueous fluid;
  • annular diffuser passage that is in fluid communication with the inlet for receiving aqueous fluid and that is in fluid communication with the treatment chamber through an inner annular slit opening and an outer annular slit opening; a cover plate, which separates the annular diffuser passage from the treatment chamber and defines the inner annular slit opening and the outer annular slit opening , said outer annular slit opening being located adjacent the outer wall of the treatment chamber and said inner annular slit opening being located concentrically within the outer annular slit opening ;
  • said annular diffuser passage comprising an annular diffuser chamber which receives a stream of aqueous fluid from the inlet and an annular nozzle section, said annular diffuser chamber and said annular nozzle section being coaxially positioned, the annular diffuser chamber being separated from the annular nozzle section by a separating plate comprising a plurality of equidistant openings through which the stream of aqueous fluid enters the annular nozzle section in a direction away from the treatment chamber, following which the stream is split up in the annular nozzle section into a first stream of aqueous fluid that proceeds in a radially inward direction before being directed towards the inner annular slit opening and the treatment chamber and a second stream of aqueous fluid that proceeds in a radially outward direction before being directed towards the outer annular slit opening and the treatment chamber.
  • the plug flow achieved in the treatment chamber of the present device ensures that the aqueous fluid receives uniform UV-treatment so that maximum disinfecting efficiency can be achieved.
  • the invention further provides a method of disinfecting aqueous fluid in a UV-treatment device comprising (a) a tubular UV-lamp; (b) a treatment chamber comprising a cylindrical outer wall, said treatment chamber providing a passage for conveying aqueous fluid and providing exposure to UV-light emitted by the UV-lamp; (c) an inlet for aqueous fluid located at one end of the treatment chamber; and (d) an outlet for discharging aqueous fluid located at the other end of the treatment chamber, said method comprising the steps of:
  • Figure 1 is cross-sectional side view of a UV-treatment device according to the present invention.
  • Figure 2 is a cross-sectional side view of the inlet chamber of the UV-treatment device
  • Figure 3 is a perspective view of the inlet chamber of the UV-treatment device
  • Figure 4 is a top view of the inlet chamber of the UV-treatment device.
  • one aspect of the present invention relates to a device for disinfecting aqueous fluid by exposing the fluid to ultraviolet (UV) light, said device comprising:
  • a tubular UV-lamp • a treatment chamber comprising a cylindrical outer wall, said treatment chamber providing a passage for conveying aqueous fluid and providing exposure to UV-light emitted by the UV-lamp;
  • UV-lamp is located inside a cylindrical sleeve means, said cylindrical sleeve means (12) being located inside the cylindrical outer wall of the treatment chamber (21 ), said sleeve means (12) and said outer wall forming a treatment chamber (21 ) providing an annular passage for conveying aqueous fluid;
  • the inlet chamber comprises: an inlet for receiving aqueous fluid
  • annular diffuser passage that is in fluid communication with the inlet for receiving aqueous fluid and that is in fluid communication with the treatment chamber through an inner annular slit opening and an outer annular slit opening; a cover plate, which separates the annular diffuser passage from the treatment chamber and defines the inner annular slit opening and the outer annular slit opening , said outer annular slit opening being located adjacent the outer wall of the treatment chamber and said inner annular slit opening being located concentrically within the outer annular slit opening ;
  • said annular diffuser passage comprising an annular diffuser chamber which receives a stream of aqueous fluid from the inlet and an annular nozzle section, said annular diffuser chamber and said annular nozzle section being coaxially positioned, the annular diffuser chamber being separated from the annular nozzle section by a separating plate comprising a plurality of equidistant openings through which the stream of aqueous fluid enters the annular nozzle section in a direction away from the treatment chamber, following which the stream is split up in the annular nozzle section into a first stream of aqueous fluid that proceeds in a radially inward direction before being directed towards the inner annular slit opening and the treatment chamber and a second stream of aqueous fluid that proceeds in a radially outward direction before being directed towards the outer annular slit opening and the treatment chamber.
  • the inner and outer annular slit openings through which aqueous fluid can enter the treatment chamber of the UV-treatment device typically are relatively narrow in comparison to the distance between these annular slit openings. Accordingly, in a preferred embodiment, the inner annular slit opening has an inner radius Ri and a width Wi; the outer annular slit opening has an outer radius R2 and a width W2;; and (W1+W2) / (R2-R1) ⁇ 0.3. Even more preferably the following condition is met: 0.05 ⁇ (W1+W2) /
  • the width of the inner annular slit opening (Wi) and the width of the outer annular slit opening (W2) are not very different.
  • the ration Wi Wi is in the range of 0.25 to 4, more preferably in the range of 0.33 to 3.
  • the annular diffuser chamber has an internal volume (Vd) that typically exceeds the internal volume of the annular nozzle section (V n ); by at least a factor 1.2, more preferably by at least a factor 1.3. Most preferably, 1.4 ⁇ V d / V n ⁇ 4.
  • the treatment chamber of the UV-treatment device typically has a volume of 200-5,000 ml, more preferably of 300-2,000 ml.
  • the length of the treatment chamber typically is in the range of 10 to 80 cm, more preferably in the range of 12 to 60 cm and most preferably in the range of 15 to 40 cm.
  • the cylindrical treatment chamber of the UV-treatment device is positioned around the UV-lamp, providing an annular passage to the aqueous fluid.
  • the UV-lamp is located inside UV-transparent cylindrical sleeve means, said cylindrical sleeve means being located inside the cylindrical outer wall of the treatment chamber, said sleeve means and said outer wall forming a treatment chamber providing an annular passage for conveying aqueous fluid.
  • the inner annular slit opening is preferably located adjacent the sleeve means.
  • the width of the annular passage ( ⁇ '), i.e. the difference between the inner radius Ri and the an outer radius R2 of the annular treatment chamber, is substantially larger than the combined width of the inner annular slit opening (Wi) and the width of the outer annular slit opening (W2).
  • the dimensions of the present device are such that the following condition is met: (W1+W2) / Y ⁇ 0.3. Even more preferably, 0.05 ⁇ (W1+W2) / Y ⁇ 0.25.
  • the annular treatment chamber typically has an inner diameter of 20-120 mm, more preferably of 30-100 mm and most preferably of 40-80 mm.
  • the outer diameter of the sleeve means typically is in the range of 10-50 mm, more preferably in the range of 12-40 mm and most preferably in the range of 15-30 mm.
  • the width of the annular treatment chamber typically is in the range of 5-50 mm, more preferably in the range of 10-35 mm, most preferably in the range of 14-25 mm.
  • the UV-lamp is preferably mounted mechanically and electrically in sockets that are connected to a driving circuit so that an alternating voltage can be applied.
  • the driving circuit draws its input power from a power source such as a mains voltage or a battery.
  • the present UV-treatment device offers the important advantage that it achieves plug flow in the treatment chamber, thanks to the special design of the inlet chamber. Accordingly, in a particularly preferred embodiment, the inlet chamber provides plug flow to the aqueous fluid entering the treatment chamber.
  • Another aspect of the present invention relates to a method of disinfecting aqueous fluid in a UV-treatment device comprising (a) a tubular UV-lamp; (b) a treatment chamber comprising a cylindrical outer wall, said treatment chamber providing a passage for conveying aqueous fluid and providing exposure to UV-light emitted by the UV-lamp; (c) an inlet for aqueous fluid located at one end of the treatment chamber; and (d) an outlet for discharging aqueous fluid located at the other end of the treatment chamber, said method comprising the steps of:
  • This method of disinfecting aqueous fluid may suitably be carried out in UV-treatment device as described herein.
  • the aqueous fluid flows through the treatment chamber in plug flow.
  • the present method offers the advantage that it is possible to effectively disinfect aqueous fluid at high throughput. Accordingly, in a preferred embodiment of the present method disinfected aqueous fluid is discharged from the device at a rate of at least 1 L/min, more preferably at a rate of 1 .8-2.5 L/min. These flow rates are typically achieved using a UV-lamp of 8-16 W, more preferably of 1 1-14 W.
  • FIG. 1 shows a UV-treatment device 1 according to the present invention.
  • the UV- treatment device 1 includes a barrel 1 1 and an UV-transparent sleeve 12.
  • the sleeve 12 is adapted to hold a tubular UV-lamp.
  • the annular treatment chamber 21 between the barrel 1 1 and the sleeve 12 is closed off at the bottom end 2 by a bottom cover (bottom gable) 13 and at the top end 3 by a top cover (top gable) 14.
  • the UV-treatment device further comprises an inlet chamber 22, positioned directly above the bottom cover 13.
  • the inlet chamber 22 is connected to an inlet pipe 15 for receiving water under pressure and comprises a cover plate 31 , an inner annular slit opening 32 and an outer annular slit opening 33.
  • An outlet pipe 16 for discharging water is located near the top cover 14.
  • water enters the device 1 via inlet chamber 22 through inlet pipe 15. From the inlet chamber 22 water enters the annular treatment chamber 21 through annular slit openings 32 and 33 and travels upwards through annular treatment chamber 21 towards the top end 3 where it is discharged from outlet pipe 16. Whilst the water flows through the annular treatment chamber 21 it is exposed to UV light that is emitted by a UV lamp (not shown) that it is positioned inside the sleeve 12.
  • FIG. 2 shows a cross-sectional side view of the bottom end 2 of the UV-treatment device 1 .
  • the inlet pipe 15 feeds into the annular diffuser chamber 41 of inlet chamber 22.
  • the inlet chamber 22 comprises a separating plate 42 that contains a plurality of equidistant openings 43 that connect the interior of the annular diffuser chamber 41 with the interior of the annular nozzle section 44.
  • the interior of the annular nozzle section 44 is connected with the annular treatment chamber 21 through inner annular slit opening 32 and outer annular slit opening 33.
  • FIG 3 shows a perspective view of the inlet chamber 22 with the cover plate 31 removed.
  • the inlet pipe 15 introduces water into the annular diffuser chamber 41 in such a way that water flows from the inlet pipe 15 through the annular diffuser chamber 41 in both circumferential directions.
  • Water entering the annular diffuser chamber 41 under pressure is pressed through the plurality of equidistant openings 43 in separating plate 42 into the nozzle section 44 of which the inner annular slit opening 32 and the outer annular slit opening 33 are shown.
  • the cover plate 31 when in place, closes off the annular space of the annular diffuser chamber 41 , but does leaves open the annular slit openings 32 and 33.
  • water enters the annular diffuser chamber 41 of inlet chamber 22 through inlet pipe 15.
  • Water flows from the inlet pipe 15 in both circumferential directions and through equidistant openings 43 in separating plate 42 into the annular nozzle section 44 and leaves the annular nozzle section 44 through the inner annular slit opening 32 and the outer annular slit opening 33.
  • Due to the special geometry of the inlet chamber 22 the linear flow of water from inlet pipe 15 is converted into two steady annular flows that leave the inlet chamber 22 through the inner annular slit opening 32 and the outer annular slit opening 33. Together these two steady annular flows create a plug flow in the annular treatment chamber 21 of the UV-treatment device 1 (see Fig. 1 ).
  • Figure 4 shows a top view of the inlet chamber 22 without the cover plate 31 .
  • the inlet pipe 15 enters annular diffuser chamber 41 .
  • the separating plate 42 comprises equidistant openings 43. Further shown are the slit openings 32 and 33.
  • An UV treatment device as shown in Figures 1-4 was used to treat water that had been infected with bacteria (K. terrigena) and virus (MS2 bacteriophage).
  • the device was fitted with a pre-filter (pleated fabric + carbon block) and a UV lamp (1 1 W, ex Osram). The performance of the device was compared with that of an identical device that lacked an inlet chamber.
  • An UV treatment device as described in Example 1 was used to treat water that had been infected with bacteria (K. terrigena) and virus (MS2 bacteriophage). The performance of the device was compared to that of two devices described in WO 00/06499 (WO'499) and WO 201 1/014717 (WO'717).

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  • 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)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physical Water Treatments (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

L'invention concerne un dispositif (1) pour désinfecter un fluide aqueux par exposition du fluide à une lumière ultraviolette (UV), ledit dispositif (1) comprenant : • une lampe UV tubulaire ; • une chambre de traitement (21) comprenant une paroi externe cylindrique (11), ladite chambre de traitement (21) fournissant un passage pour transporter un fluide aqueux et fournissant une exposition à la lumière UV émise par la lampe UV ; • un couvercle supérieur (14) et un couvercle inférieur (13) ; • une chambre d'entrée (22) située au niveau d'une extrémité de la chambre de traitement (21), • une sortie (16) pour évacuer un fluide aqueux, située au niveau de l'autre extrémité de la chambre de traitement (21) ; la chambre d'entrée (22) comprenant : - une entrée (15) pour recevoir un fluide aqueux ; - un passage de diffuseur annulaire qui est en communication fluidique avec l'entrée (15) pour recevoir un fluide aqueux et qui est en communication fluidique avec la chambre de traitement (21) à travers une ouverture de fente annulaire interne (32) et une ouverture de fente annulaire externe (33), ladite ouverture de fente annulaire externe (33) étant disposée de manière adjacente à la paroi externe de la chambre de traitement (21) et ladite ouverture de fente annulaire interne (32) étant disposée de manière concentrique dans l'ouverture de fente annulaire externe (33) ; et - une plaque de recouvrement (31), qui sépare le passage de diffuseur annulaire et la chambre de traitement (21) et définit l'ouverture de fente annulaire interne (32) et l'ouverture de fente annulaire externe (33). Le dispositif de traitement par UV (1) selon la présente invention est extrêmement efficace pour désinfecter un fluide aqueux, même à un débit très élevé.
PCT/EP2017/058942 2016-04-28 2017-04-13 Dispositif de traitement par uv de fluide aqueux Ceased WO2017186510A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780026160.5A CN109071272B (zh) 2016-04-28 2017-04-13 用于水性流体的uv-处理的设备
PH12018502217A PH12018502217A1 (en) 2016-04-28 2018-10-17 Device for uv-treatment of aqueous fluid

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IN201621014756 2016-04-28
IN201621014756 2016-04-28
EP16175394 2016-06-21
EP16175394.2 2016-06-21

Publications (1)

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WO2017186510A1 true WO2017186510A1 (fr) 2017-11-02

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PH (1) PH12018502217A1 (fr)
WO (1) WO2017186510A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3819263A1 (fr) 2019-11-05 2021-05-12 Unilever IP Holdings B.V. Dispositif de traitement par uv d'un fluide aqueux
EP3560521B1 (fr) * 2018-04-24 2024-03-27 Biosafelight Dispositif de decontamination de liquide turbide

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EP0616975A2 (fr) 1993-03-22 1994-09-28 Amway Corporation Système d'épuration d'eau à usage ménager
WO2000006499A1 (fr) 1998-07-31 2000-02-10 Amway Corporation Systeme de traitement de l'eau situe au point d'utilisation
WO2002038191A2 (fr) * 2000-11-13 2002-05-16 Bayer Aktiengesellschaft Procede d'inactivation de micro-organismes presents dans un fluide au moyen de rayonnement ultraviolet
US20050056597A1 (en) 2003-09-16 2005-03-17 Pure Pulse Technologies, Inc. Method and apparatus for controlling flow profile to match lamp fluence profile
WO2011014717A2 (fr) 2009-07-30 2011-02-03 Siemens Pte Ltd. Déflecteurs pour réacteur à ultraviolet
WO2012014108A1 (fr) 2010-07-26 2012-02-02 Koninklijke Philips Electronics N.V. Dispositif permettant de soumettre un fluide à un traitement désinfectant en exposant le fluide à un rayonnement ultraviolet

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CN103807959B (zh) * 2014-02-20 2016-05-11 深圳达实智能股份有限公司 条缝式均流布水管、条缝式均流布水器及水蓄冷设备
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Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0616975A2 (fr) 1993-03-22 1994-09-28 Amway Corporation Système d'épuration d'eau à usage ménager
WO2000006499A1 (fr) 1998-07-31 2000-02-10 Amway Corporation Systeme de traitement de l'eau situe au point d'utilisation
WO2002038191A2 (fr) * 2000-11-13 2002-05-16 Bayer Aktiengesellschaft Procede d'inactivation de micro-organismes presents dans un fluide au moyen de rayonnement ultraviolet
US20050056597A1 (en) 2003-09-16 2005-03-17 Pure Pulse Technologies, Inc. Method and apparatus for controlling flow profile to match lamp fluence profile
WO2011014717A2 (fr) 2009-07-30 2011-02-03 Siemens Pte Ltd. Déflecteurs pour réacteur à ultraviolet
WO2012014108A1 (fr) 2010-07-26 2012-02-02 Koninklijke Philips Electronics N.V. Dispositif permettant de soumettre un fluide à un traitement désinfectant en exposant le fluide à un rayonnement ultraviolet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3560521B1 (fr) * 2018-04-24 2024-03-27 Biosafelight Dispositif de decontamination de liquide turbide
EP3819263A1 (fr) 2019-11-05 2021-05-12 Unilever IP Holdings B.V. Dispositif de traitement par uv d'un fluide aqueux

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Publication number Publication date
CN109071272B (zh) 2022-02-15
PH12018502217A1 (en) 2019-08-05
CN109071272A (zh) 2018-12-21

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