WO2017060088A1 - Cuve à circulation permettant de réduire les micro-organismes viables dans un fluide - Google Patents

Cuve à circulation permettant de réduire les micro-organismes viables dans un fluide Download PDF

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Publication number
WO2017060088A1
WO2017060088A1 PCT/EP2016/072422 EP2016072422W WO2017060088A1 WO 2017060088 A1 WO2017060088 A1 WO 2017060088A1 EP 2016072422 W EP2016072422 W EP 2016072422W WO 2017060088 A1 WO2017060088 A1 WO 2017060088A1
Authority
WO
WIPO (PCT)
Prior art keywords
flow cell
inlet port
vessel
fluid
cone
Prior art date
Application number
PCT/EP2016/072422
Other languages
English (en)
Inventor
Franklin David Chandra
Venkataraghavan Rajanarayana
Original Assignee
Unilever N.V.
Unilever Plc
Conopco, Inc., D/B/A Unilever
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 N.V., Unilever Plc, Conopco, Inc., D/B/A Unilever filed Critical Unilever N.V.
Publication of WO2017060088A1 publication Critical patent/WO2017060088A1/fr

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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
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/32—Details relating to UV-irradiation devices
    • C02F2201/322—Lamp arrangement
    • C02F2201/3222—Units using UV-light emitting diodes [LED]
    • 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
    • C02F2301/026—Spiral, helicoidal, radial

Definitions

  • the invention relates to a flow cell for reducing the number of viable microorganisms in a fluid.
  • UV radiation Ultraviolet (UV) radiation is one of the most reliable agents for disinfecting water.
  • Conventional lamps generally used in domestic UV water purifiers consume about 10 to 20 W of power. UV lamps also need to warm up sufficiently to radiate light of sufficient intensity.
  • conventional UV lamps were widely used in such devices.
  • UV LED Ultraviolet Light Emitting Diodes
  • UV LED Ultraviolet Light Emitting Diodes
  • the mechanism by which they act against microbes is the same as conventional lamps but they consume lesser power, can be switched-on instantly and are mercury-free.
  • a typical UV LED flow cell has a coaxial design built around cylindrical UV lamps which are secured within end caps. UV LEDs are relatively smaller in size therefore fewer lamps, typically arranged in the form of an array are needed. The LEDs are generally fitted inside end caps of the flow cell but they may also be arranged inside the body of the cell thereby providing for contact between the fluid which flows through the cell with the UV light.
  • US20100314551 A1 discloses an in-line fluid treatment device with LEDs.
  • the system includes a source of UV radiation directed into the flow; a computation unit for determining, based on at least one flow parameter, a configuration of the UV source to achieve germicidal effect in the fluid; and a mechanism for controlling the UV source in response to the determined configuration.
  • US20060131246 A1 discloses a water purification system with plurality of ultraviolet light emitting diodes. This includes an inlet, an ultraviolet radiation chamber, and an outlet wherein the inlet is connected in fluid relationship to the ultraviolet radiation chamber.
  • the outlet is connected in fluid relationship to the ultraviolet radiation chamber to allow water to flow between the inlet and the outlet through the ultraviolet radiation chamber, wherein the ultraviolet radiation chamber is positioned adjacent to a plurality of ultraviolet light emitting diodes.
  • the UV LEDs are arranged in the form of an array.
  • the UV radiation chamber is a transparent tube with the plurality of ultraviolet light emitting diodes positioned on the outside of the transparent tube or positioned within the transparent jacket.
  • US2010/0237254 A1 discloses a water purifying apparatus which has a pipe for conveying a fluid, a series of UV LEDs and a control circuit for controlling operation of the LEDs. Conduit means allows constant circulation of the water. Additional purification means like baffles or plates coated with a metal within the pipe are also disclosed.
  • US2004/0226893 A1 discloses a water treatment apparatus which has an ultraviolet radiation part and an oxidizer mixing part disposed adjacent to and upstream of the ultraviolet radiation part, said oxidizer mixing part includes a conical part having a tapered configuration that expands from a minimum cross-sectional area to a large passage part.
  • any water purification method should provide 6-log reduction of bacteria and 4-log reduction of virus but this is not achievable at all times. Consumers desire such devices/methods which are able to provide log reduction, as close as possible to the standards set by USEPA, but at highest possible flow rate. In other words, the water should be purified as quickly as possible.
  • US2012138545 A discloses a system having LED source and photo- catalytic material disposed therein.
  • this conduit also has flow disturbing elements, flow reflectors as well as heat sinks.
  • the reflector may be in the form of continuous helix about the inner surface of the pipe and its shape and positioning is intended to create turbulent fluid flow through the pipe. It is further disclosed that the reflector may also be shaped and positioned as a flow-disturbing element to promote turbulent flow of fluid through the pipe.
  • a flow cell (201 ) for reducing the number of viable microorganisms in a fluid, said flow cell having:
  • inlet port (205) is configured to direct the fluid emanating from the inlet port (205) in a direction wherein:
  • said direction is within a cone having a semi-conical angle a (alpha) of 85° with the cone axis parallel to the shortest geometric path between the inlet port
  • said direction is at an angle ⁇ (beta) of not more than 15° relative to the wall (213) adjoining the inlet port (205) of the vessel (202).
  • a process for reducing the number of viable microorganisms in a fluid by a flow cell of the first aspect having the steps of:
  • the inlet port (205) is configured to direct the fluid emanating from the inlet port (205) in a direction wherein: (i) said direction is within a cone having a semi-conical angle a (alpha) of 85° with the cone axis parallel to the shortest geometric path between the inlet port (205) and the outlet port (207) wherein the cone extends in a direction away from the shortest geometric path; and,
  • said direction is at an angle ⁇ (beta) of not more than 15° relative to the wall (213) adjoining the inlet port (205) of the vessel (202).
  • Figure 1 is longitudinal sectional view of a conventional flow cell.
  • Figure 2 is transverse sectional view of the flow cell of Figure 1 at the point of inlet of water.
  • Figure 3 is longitudinal sectional view of a preferred embodiment of flow cell.
  • Figure 4 is transverse sectional view of the preferred embodiment of Figure 3 at the point of inlet of water.
  • Figure 5a is a longitudinal sectional view of the preferred embodiment showing the semi-conical angle a (alpha).
  • Figure 5b is a transverse sectional view of the preferred embodiment at the point of inlet of water showing the angle ⁇ (beta).
  • FIG. 1 is a longitudinal sectional view of a conventional flow cell (101 ).
  • the flow cell (101 ) has an elongated tubular vessel (102) which is circular in a transverse cross section. Inside the vessel is a path (103) for flow of fluid.
  • the elongated vessel (102) has a sheath (104) around it.
  • the vessel (102) is made of stainless steel while the sheath (104) is made of Teflon. Dimensions of the vessel (102) are 0.12 meters length and 0.04 meters diameter.
  • the vessel (102) has an inlet port (105) for entry of untreated water through the inlet pipe (106).
  • the inlet port (105) is preferably directed towards the region of maximum energy density.
  • an outlet port (107) is provided for exit of treated fluid or fluid after reduction of the number of viable microorganisms through the outlet pipe (108).
  • Between the inlet port (105) and outlet port (107) is the shortest geometric path for flow of the fluid (shown with broken lines).
  • an end cap (109, 1 10) At either ends of the tubular vessel (102) is an end cap (109, 1 10), each provided with five UV LEDs arranged radially approximately 72° apart and one at the centre (not seen in this view).
  • Each end cap (109, 1 10) is made of quartz enclosed in stainless steel frame.
  • FIG. 1 is transverse sectional view of the flow cell of Figure 1 at the point of inlet of water (region marked at A— A' in Figure 1 )
  • FIG 3 is longitudinal sectional view of a preferred embodiment of flow cell (201 ).
  • the preferred embodiment is identical in construction to the conventional flow cell (101 ).
  • the inlet (205) is configured to direct the fluid emanating from the inlet port (205) in a direction within a cone having a semi- conical angle a (alpha) of 85° and in which said direction is at an angle ⁇ (beta) of not more than 15° relative to the wall adjoining the inlet port (205) of the vessel (202), providing a tangential flow of fluid in the path between the inlet port (205) and the outlet port (207).
  • FIG. 4 is transverse sectional view of the flow cell (201 ) of Figure 3 at the point of inlet of water (region marked at A— A' in Fig. 3).
  • this configuration of the inlet port (205) preferably provides the water emanating from the inlet port a tangential flow through the path between the inlet port (205) and the outlet port (207).
  • Figure 5a is a longitudinal sectional view of the preferred embodiment of the flow cell (201 ) showing the semi-conical angle a (alpha).
  • This figure shows a cross section of a portion of the cone having semi-conical angle a of 50° within which the fluid emanating from the inlet port (205) is directed to flow.
  • the axis OZ of the cone is parallel to the shortest geometric path (shown by broken line OZ') between the inlet port (205) and the outlet port (207).
  • the apex of the cone (O) is positioned at the mouth of the inlet port (205) from which the water emanates and the cone extends in a direction away from the shortest geometric path.
  • the cone extends towards the end cap (209) provided with five UV LEDs arranged radially approximately 72° apart and one at the centre (not seen in this view).
  • Figure 5b is a transverse sectional view of the preferred embodiment of the flow cell (201 ) at the point of inlet of water showing the angle ⁇ (beta) which is approximately 15° relative to the wall (213, shown by the dashed line) adjoining the inlet port (205) of the vessel (202).
  • Disclosed flow cell for reducing the number of viable microorganisms in a fluid includes a vessel, an inlet port, an outlet port and an ultraviolet light emitting source.
  • the fluid may be a gas or liquid, whatever can be purified by exposing it to ultraviolet radiation and usually it is water.
  • Disclosed flow cell includes a vessel delimited by a wall.
  • the vessel includes an inlet port and an outlet port defining a path there between for flow of fluid.
  • the wall of the vessel is at least partially curved, linear or curvilinear in a transverse cross section. It is preferred that in a transverse cross section, the wall of the vessel is circular or is an n-sided polygon, wherein n is at least 3. Preferably the wall of the vessel is an n-sided polygon where n is 3 to 18, more preferably n is 3 to 8 still more preferably 3 to 6.
  • the vessel is preferably elongated and having two opposing ends. There is no restriction on the size and dimensions of the flow cell. However, keeping in mind the commercial use and the size of ordinary flow cells for residential applications, it is preferred that the vessel of the flow cell is from 0.08 to 0.2 meters, preferably 0.1 to 0.15 meters long and it has diameter of 0.02 to 0.08 meters, more preferably 0.03 to 0.05 meters.
  • the cross-sectional area of the vessel is 1.0 x 10 "4 m 2 to 1.0 x 10 "2 m 2 , preferably 3.0 x 10 "4 m 2 to 5.0 x 10 "3 m 2 .
  • the volume of said vessel is 1 x10 "5 to 1 x10 "3 m 3 .
  • the length of the vessel is greater than its maximum width, so that the UV radiation is substantially uniform across the cross section of the flow cell over the majority of the length of the flow cell. It is also preferred that the cross section profile and area of the vessel of the flow cell are substantially constant along the length of UV illuminated region.
  • the vessel may be made of any known material which is suitable for construction of a flow cell. A preferred material is stainless steel. It is preferred that the vessel has a sheath, which preferably is made of Teflon or similar material. It is also preferred that the body has reflective surfaces for example polished or coated stainless steel.
  • the vessel has an end-cap at an end of the vessel for sealing the vessel, more preferably at each end of the vessel. When the vessel is elongated with two opposing ends, the end cap may be present at one end or both the ends of the vessel for sealing the vessel.
  • the flow cell has a heat sink adjacent an end-cap, preferably adjacent each end-cap.
  • Preferred embodiments of flow cell includes one or more baffles positioned in the path for the flow of fluid inside the vessel. Function of the baffles is to create additional turbulence and thereby prolong residence time.
  • the baffles are positioned substantially midway between the inlet port and the outlet port. It is preferred that in the case of a single baffle, it is positioned midway between the inlet and said outlet. In this case it is further preferred that the baffle has an opening for water to pass there through where the opening is positioned remote from said inlet port.
  • the baffle(s) is made of UV transparent material such as quartz glass or silica glass.
  • Disclosed flow cell includes an inlet port.
  • the inlet port is adjacent to one end and the outlet port is adjacent to an opposing end of the vessel.
  • the inlet port and the outlet port is on the same side of the longitudinal axis of the vessel.
  • the inlet port of the disclosed flow cell is configured to direct the fluid emanating from the inlet port in a direction which is within a cone having a semi-conical angle a (alpha) of 85°.
  • the cone has an angle a of 80°, more preferably of 75° and still more preferably of 70°, further preferably of 65° and most preferably of 60° but preferably the angle a is at least 20° still preferably at least 30°, further preferably at least 40° and most preferably at least 50°.
  • the axis of said cone is parallel to a shortest geometric path between the inlet port and the outlet port. In Figure 3, the shortest geometric path is shown with broken lines between the inlet port and outlet port.
  • the cone extends in a direction away from the shortest geometric path, and preferably extends towards a region in which the ultraviolet light density is maximum.
  • this configuration of the inlet port which directs the fluid emanating from the inlet port in a specific direction (as disclosed in the present invention) that is away from the shortest geometric path, causes the fluid entering the flow cell to flow through a path which provides the fluid increased residence time inside the flow cell. It is also believed that when the fluid is directed away from the shortest geometric path, the fluid is better circulated inside the vessel of the flow cell, thereby providing improved performance with respect to reduction in the number of viable bacteria and virus, more so in a flow cell operating at lower power consumption and higher flow rates.
  • the direction of flow of the fluid emanating from the inlet port is at an angle ⁇ (beta) of not more than 15° relative to the wall (213) adjoining the inlet port of the vessel.
  • angle ⁇ is not more than 12°, still preferably not more than 10°, still more not more than 8° and most preferably not more than 3°.
  • this configuration of the inlet port which directs the fluid emanating from the inlet port in a direction which is at an angle ⁇ of not more than 15° relative to the wall (213) adjoining the inlet port of the vessel, causes the fluid entering the flow cell to flow through a tangential flow path and the fluid is better circulated inside the vessel of the flow cell and thereby providing improved performance with respect to reduction in the number of viable bacteria and virus, more so in a flow cell operating at lower power consumption and higher flow rates.
  • Disclosed flow cell includes an outlet port.
  • the inlet port and the outlet port defines a path there between for flow of fluid.
  • Ultraviolet light emitting source Disclosed flow cell includes at least one ultraviolet light emitting source capable of illuminating the fluid flowing through the vessel.
  • the UV light emitting source may be placed suitably anywhere in the path or away from the path whilst ensuring that the fluid is contactable by the UV light emitted therefrom. It is highly preferred that the UV light emitting source is a diode.
  • the ultraviolet light emitting source is capable of illuminating the fluid flowing through the vessel with an energy of at least 4 x 10 2 J/m 2 .
  • the inlet port is preferably directed towards a region of maximum energy density.
  • the vessel has an end-cap at each end of the vessel for sealing the vessel.
  • the LED may be placed in the path of flowing fluid or may, and preferably are, placed within end caps disposed at either ends of the tubular vessel of the flow cell.
  • Each end cap provides air tight fitment to the vessel.
  • the end caps are also preferably made of stainless steel and they also, preferably, contain a gasket for better fit.
  • the LEDs are arranged inside the end caps, they preferably are arranged along extremities of the end caps and radially in the case of circular end caps. For example, in the case of a circular end cap having six LEDs, the LEDs are arranged at angle of 72° with respect to each other and one at the center.
  • the end caps have quartz windows which are transparent to UV light.
  • a process for reducing the number of viable microorganisms in a fluid by a flow cell of the first aspect having the steps of (i) illuminating said path between the inlet port and the outlet port of the flow cell with one or more ultraviolet light emitting source and (ii) passing a fluid through the inlet port of the flow cell characterised in that the inlet port is configured to direct the fluid emanating from the inlet port in a direction which is within a cone having a semi-conical angle a (alpha) of 85° with the cone axis parallel to the shortest geometric path between the inlet port and the outlet port wherein the cone extends in a direction away from the shortest geometric path; and, the direction is at an angle ⁇ (beta) of not more than 15° relative to the wall adjoining the inlet port of the vessel.
  • said path between the inlet port and the outlet port of the flow cell is illuminated with one or more ultraviolet light emitting diode, and when in operation, the fluid flowing through the path is exposed to at least 4 x 10 2 J/m 2 of energy.
  • the ultraviolet light emitting diode is placed suitably anywhere in the path or away from the path whilst ensuring that the fluid is contactable by the light emitted therefrom.
  • Example 1 Conventional flow cell
  • the conventional flow cell of Figure 1 was used for this experiment.
  • the flow cell (0.12 m length x 0.04m diameter) was made of stainless steel and encased in a sheath of Teflon. The ends of the flow cell were enclosed by two circular quartz windows of 0.05 m diameter and 0.005 m thickness in a stainless steel frame. Each end cap had six UV LEDs (five radial and one at the centre). Total UV energy density in the cell was 2.2 x 10 3 J/m 2 and it was greater than dosage of 1.0 x 10 3 J/m 2 of UV radiation
  • the preferred flow cell of Figure 3 was used for this experiment.
  • the flow cell (0.12 m length x 0.04m diameter) was made of stainless steel and encased in a sheath of Teflon. The ends of the flow cell were enclosed by two circular quartz windows of 0.05 m diameter and 0.005 m thickness in a stainless steel frame. Each end cap had six UV LEDs (five radial and one at the centre). Total UV energy density in the cell was 2.2 x 10 3 J/m 2 and it was greater than dosage of 1.0 x 10 3 J/m 2 of UV radiation
  • the inlet port was configured to direct the water emanating from the inlet port in a direction which is within a cone having a semi-conical angle a of approximately 50° (as shown in Figure 5a).
  • the axis of the cone was parallel to the shortest geometric path between the inlet port and the outlet port and the cone extends in a direction away from the shortest geometric path as shown in Figure 5(a).
  • the direction of flow of fluid emanating from the inlet port was also at an angle ⁇ (beta) of 15° relative to the wall adjoining the inlet port of the vessel (as shown in Figure 5b). This data is summarized in table 2.

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  • 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)

Abstract

L'invention concerne une cuve à circulation pour la purification d'un fluide. Un des objets de la présente invention concerne une cuve à circulation qui permet d'obtenir une meilleure circulation du fluide à l'intérieur du corps de la cellule. Un autre objet concerne une cuve à circulation ayant une performance améliorée en matière de réduction du nombre de bactéries et de virus viables. On a maintenant déterminé que les performances de la cuve à circulation (202) peuvent être sensiblement améliorées par la présence d'un orifice d'entrée (205) qui est configuré pour diriger le fluide entrant par celui ci (205) dans une direction comprise dans un cône ayant un angle semi-conique α (alpha) de 85°, et dont l'axe est parallèle à la plus courte trajectoire géométrique entre l'orifice d'entrée (205) et l'orifice de sortie (207), ledit cône s'étendant dans une direction s'éloignant de cette trajectoire; et ladite direction formant un angle β (bêta) ne dépassant pas 15° par rapport à la paroi (213) adjacente à l'orifice d'entrée (205) de la cuve (202).
PCT/EP2016/072422 2015-10-05 2016-09-21 Cuve à circulation permettant de réduire les micro-organismes viables dans un fluide WO2017060088A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP15188298.2 2015-10-05
EP15188298 2015-10-05

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WO2017060088A1 true WO2017060088A1 (fr) 2017-04-13

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10180248B2 (en) 2015-09-02 2019-01-15 ProPhotonix Limited LED lamp with sensing capabilities
US11686716B2 (en) * 2017-09-19 2023-06-27 Lincoln Agritech Limited Flow cell

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US5779912A (en) * 1997-01-31 1998-07-14 Lynntech, Inc. Photocatalytic oxidation of organics using a porous titanium dioxide membrane and an efficient oxidant
US20040226893A1 (en) 2003-05-13 2004-11-18 Mitsubishi Denki Kabushiki Kaisha Water treatment apparatus
US20060131246A1 (en) 2004-12-21 2006-06-22 Ranco Incorporated Of Delaware Water purification system utilizing a plurality of ultraviolet light emitting diodes and associated method of use
US20100025337A1 (en) 2007-09-27 2010-02-04 Water Of Life, Llc. Self-Contained UV-C Purification System
US20100237254A1 (en) 2006-04-01 2010-09-23 P.W. Circuits Limited Fluid treatment apparatus comprising ultraviolet light emitting diode
US20100314551A1 (en) 2009-06-11 2010-12-16 Bettles Timothy J In-line Fluid Treatment by UV Radiation
CN201777914U (zh) 2010-09-11 2011-03-30 哈尔滨工业大学深圳研究生院 一种消毒效果均匀的紫外线消毒装置
WO2011075694A1 (fr) * 2009-12-18 2011-06-23 Nano Terra Inc. Dispositif et procédés de traitement de fluides utilisant un rayonnement ultraviolet
WO2011156281A1 (fr) * 2010-06-07 2011-12-15 Genzyme Corporation Dispositif pour l'inactivation virale de milieux liquides
DE102010047782B3 (de) * 2010-10-08 2012-01-12 Itt Manufacturing Enterprises, Inc. Strömungsgleichrichter für geschlossene Rohrleitungen
US20120138545A1 (en) 2010-12-07 2012-06-07 Soler Robert R LED Fluid Purification System and Method

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5779912A (en) * 1997-01-31 1998-07-14 Lynntech, Inc. Photocatalytic oxidation of organics using a porous titanium dioxide membrane and an efficient oxidant
US20040226893A1 (en) 2003-05-13 2004-11-18 Mitsubishi Denki Kabushiki Kaisha Water treatment apparatus
US20060131246A1 (en) 2004-12-21 2006-06-22 Ranco Incorporated Of Delaware Water purification system utilizing a plurality of ultraviolet light emitting diodes and associated method of use
US20100237254A1 (en) 2006-04-01 2010-09-23 P.W. Circuits Limited Fluid treatment apparatus comprising ultraviolet light emitting diode
US20100025337A1 (en) 2007-09-27 2010-02-04 Water Of Life, Llc. Self-Contained UV-C Purification System
US20100314551A1 (en) 2009-06-11 2010-12-16 Bettles Timothy J In-line Fluid Treatment by UV Radiation
WO2011075694A1 (fr) * 2009-12-18 2011-06-23 Nano Terra Inc. Dispositif et procédés de traitement de fluides utilisant un rayonnement ultraviolet
WO2011156281A1 (fr) * 2010-06-07 2011-12-15 Genzyme Corporation Dispositif pour l'inactivation virale de milieux liquides
CN201777914U (zh) 2010-09-11 2011-03-30 哈尔滨工业大学深圳研究生院 一种消毒效果均匀的紫外线消毒装置
DE102010047782B3 (de) * 2010-10-08 2012-01-12 Itt Manufacturing Enterprises, Inc. Strömungsgleichrichter für geschlossene Rohrleitungen
US20120138545A1 (en) 2010-12-07 2012-06-07 Soler Robert R LED Fluid Purification System and Method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10180248B2 (en) 2015-09-02 2019-01-15 ProPhotonix Limited LED lamp with sensing capabilities
US11686716B2 (en) * 2017-09-19 2023-06-27 Lincoln Agritech Limited Flow cell

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