NL1039050C2 - Device and method for a uv disinfection reactor. - Google Patents
Device and method for a uv disinfection reactor. Download PDFInfo
- Publication number
- NL1039050C2 NL1039050C2 NL1039050A NL1039050A NL1039050C2 NL 1039050 C2 NL1039050 C2 NL 1039050C2 NL 1039050 A NL1039050 A NL 1039050A NL 1039050 A NL1039050 A NL 1039050A NL 1039050 C2 NL1039050 C2 NL 1039050C2
- Authority
- NL
- Netherlands
- Prior art keywords
- liquid
- channel
- fluid
- nodes
- fluid channel
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004659 sterilization and disinfection Methods 0.000 title description 17
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 244000005700 microbiome Species 0.000 claims abstract description 13
- 239000003651 drinking water Substances 0.000 claims abstract description 5
- 235000020188 drinking water Nutrition 0.000 claims abstract description 5
- 230000000249 desinfective effect Effects 0.000 claims abstract 4
- 239000012530 fluid Substances 0.000 claims description 67
- 230000005855 radiation Effects 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 6
- 239000010453 quartz Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002847 impedance measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001139 pH measurement Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater 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
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention relates to a method, device and system for disinfecting a liquid. More specifically, the method relates to killing micro-organisms in drinking water, for example. The method according to the invention comprises: providing the liquid to a liquid channel; generating one or more acoustic waves with one or more transducers; - generating a filter of nodes and/or node regions with the one or more waves such that particles in the liquid are hindered; and treating the liquid with UV from an UV-source.
Description
f
Device and method for a UV disinfection reactor
The present invention relates to a device and method for disinfection of a liquid by UV radiation comprising at least one first cilindrical or rectangular fluid channel with a fluid inlet and a fluid outlet that is equipped with at least one UV radiation source, at least a second 5 and preferably also a third fluid side channel both connected to the first cilindrical or rectangular fluid channel, acoustic wave generating means that are connected to the second and optionally to the third fluid side channels respectively and that are capable to produce wave interference in at least the first cilindrical or rectangular fluid channel, control means for controlling the wave generating means capable to achieve a structure with the 10 generated waves such that at least two node lines are formed in the first cilindrical or rectangular fluid channel whereby a significant angle of at least 5 degrees exists between at least two node lines and the axial direction of the first cilindrical or rectangular fluid channel. With the device and method according to the present invention, it is possible to capture particles, such as micro-organisms, in the node lines or node regions thereby increasing the 15 residence time of these particles in the UV disinfection reactor. The result is a considerably higher disinfection efficiency of the UV reactor. Additionally, the acoustic vibrations in the reactor prevent reactor fouling and fouling of the UV radiation source.
Introduction 20 For disinfection of drinking water and waste water, UV disinfection is a popular technique since it is non chemical and leaves no residuals. Disinfection of water by UV radiation according to prior art usually comprises application of a UV-C gas discharge lamp placed in a quartz tube that is on its turn placed in a cilinder i.e., the reactor, through which the water to be disinfected is pumped. A challenge in UV disinfection is to ensure that all micro-25 organisms in the fluid leaving the reactor are killed by the UV radiation. Transmission of UV-C radiation to all fluid elements of water in the reactor may be hindered by the presence of particles in the water and fouling of the quartz tube. Additionally, because of the residence time distribution of the water in the reactor, it may be the case that the exposure of a significant volume fraction of water to the UV radiation is too short to ensure that all micro-30 organisms are killed by the UVC radiation. A solution to this latter problem is to design a reactor that behaves from a residence time distribution point of view as a plug flow reactor i.e., ideally mixed in the radial direction. However, such a design requires a relatively low fluid velocity in the tube and also small fluid channels resulting in large and expensive reactors. For tubular reactors with larger diameters, usually baffles are placed to create 35 turbulance. However, this will increase the resistance and thus increase the pumping costs. The technology according to the present invention comprises a device and method for a UV disinfection reactor that is significantly smaller than prior art UV reactors and yet very 1039050 * f 2 efficient.
Description of the technology according to the present invention According to a first aspect, the present invention relates to at least one first cilindrical or 5 rectangular fluid channel equipped with a fluid inlet and a fluid outlet and at least one UV radiation source. This first cilindrical or rectangular fluid channel is preferably equipped with at least an inlet and an outlet to enable a continuous fluid flow through the channel.
According to a second aspect, the present invention relates to at least a second and preferable also a third fluid side channel, both connected to the first cilindrical or rectangular 10 fluid channel. Preferably, at least one fluid side channel is connected to acoustic wave generating means. More preferably two fluid side channels are connected to acoustic wave generating means. Most preferably more than two fluid side channels are connected to acoustic wave generating means.
According to a third aspect, the present invention relates to control means for controlling the 15 acoustic wave generating means of at least a second cilindrical fluid side channel.
Preferably more than one cilindrical fluid side channels are equipped with controlling means for controlling the acoustic wave generating means. Most preferably, the controlling means for controlling the acoustic wave generating means are controlled by the use of at least a microprocessor and software.
20 According to a fourth aspect, the present invention relates to at least one sensor for sensing properties of the fluid present in the first cilindrical or rectangular fluid channel. Preferably the sensing principle of at least one sensor for sensing the fluid properties in the first cilindrical or rectangular channel is based upon at least one of the following sensing techniques: acoustic measurements, light scattering measurements, light reflection 25 measurements, conductivity measurements, pH measurements, temperature measurements, impedance measurements, dielectric measurements. In case temperature measurements are applied, these measurements preferably comprise temperature measurements using infrared technology and / or PTCs and / or NTCs and / or Pt100 sensing elements preferably placed in the fluid of the first cilindrical or rectangular fluid 30 channel and / or connected to the inner wail and / or outer wall of the first cilindrical or rectangular fluid channel.
The signal(s) produced by the sensor(s) for sensing the fluid properties are preferably fed to a microprocessor, preferably to a microcontroller, preferably by the use of an analog to digital converter.
35 According to a fifth aspect, the present invention relates to software for controlling the acoustic wave generating means. Preferably the software contains a feed back loop from the sensor to the acoustic wave generating means.
3
According to a sixth aspect, the present invention relates to software for controlling the acoustic wave generating means in such a manner that wave interference occurs so that node lines are produced in the first cilindrical or rectangular fluid channel. In these node lines particles will collect resulting in a fluid filter and / or a particle concentration device.
5 Preferably, a significant angle of at least 5 degrees exists between at least two node lines and the axial direction of the first cilindrical or rectangular fluid channel repectively.
Figure 1 gives a schematic overview of the technology according to the present invention. It is noted that figure 1 is one of the many possible embodiments of the technology according to the present invention and the present invention is by no means limited to figure 1.
10 The arrows 1 and 2 in figure 1 show the flow direction of the fluid. C1 relates to the first cilindrical or rectangular fluid channel. It is noted that the cilindrical or rectangular shape of the first fluid channel is a preferred embodiment. It is stressed that a large number of other geometrical shapes of the first fluid channel are technically feasible and part of the technology according to the present invention. Fluid channels C2 and C3 relate to the 15 second and third fluid side channel respectively. A1 and A2 relate to the first and second acoustic sound generating means respectively. The angle (3 relates to the angle between the first cilindrical or rectangular fluid side channel and the second fluid side channel. According to the present invention, this angle is at least 5 degrees. It is noted that the angles between the different fluid side channels and the first cilindrical or rectangular fluid 20 channel may be different. It is also noted that the location at which each fluid side channel is connected to the first cilindrical or rectangular fluid channel is a design parameter. Further, it is noted that other shapes of the fluid side channels than cilindrical or rectangular are possible. Finally, it is noted that the UV radiation source may consist of a gas discharge tube placed in a quartz tube that is placed on its turn inside of the first cilindrical or 25 rectangular fluid channel. Also other UV radiation sources e.g., UV LEDs, can be applied. Now the basics aspects of the technology according to the present invention have been explained, a number of preferred embodiments will be discussed.
A first preferred embodiment of the present invention comprises application of the technology according to the present invention as a disinfection system for fluids in general 30 and for drinking water in particular.
A UV reactor according to the present invention is more efficient than prior art UV disinfection systems for the following reasons: 1. The residence time of particles i.e., micro-organisms, in the reactor is much longer than the residence time of the water to be purified. As a results of decoupling the 35 residence time distribution of the water and the micro-organisms, a design parameter is obtained to achieve disinfection in a UV reactor with much smaller dimensions than prior art reactors.
I 1 4 2. Because of the acoustic vibrations in the reactor, fouling of the UV radiation source (such as the quartz tube in which the UV-C lamp is placed) and of the reactor are prevented completely, thereby increasing the effective amount of UV-C radiation transported from the UV-C source into the water.
5 The UVC reactor can be designed such that the residence time of micro-organisms, such as bacteria, in the reactor is very long since the reactor behaves as a filter or particle concentrator for these micro-organisms. As a result, the micro-organisms will stay in the reactor until their structure is destroyed by the UV-C radiation.
The present invention is not limited to the above described example embodiments thereof; 10 the rights sought are defined by the following claims, within the scope of which many modifications can be envisaged.
15 20 25 30 35 5
Clauses 1. Device for disinfection of a liquid by UV radiation comprising « at least one first fluid channel with a fluid inlet and a fluid outlet equipped with at least one UV radiation source 5 «at least a second and preferably also a third fluid side channel both connected to the first cilindrical or rectangular fluid channel whereby the angle between the first fluid channel and at least one fluid side channel is more than 5 degrees.
e acoustic wave generating means connected to the second and optionally to 10 the third fluid side channels respectively, the acoustic wave generating means being capable to produce wave interference in at least the first fluid channel • control means for controlling the wave generating means capable to achieve a structure with the generated waves such that at least two node lines or 15 node regions are formed in the first fluid channel as a result of wave interference whereby a significant angle of at least 5 degrees exists between at least two node lines or node regions and the axial direction of the first cilindrical or rectangular fluid channel, resulting in micro-organisms being trapped in and / or near the node lines or node regions.
20 2. Device according to clause 1 further comprising at least a microprocessor and software to control the acoustic wave generating means thereby steering the concentration process of the micro-organisms in the node lines or node regions.
3. Device according to clauses 1 or 2 further comprising at least one sensor for sensing the fluid properties of the first cilindrical or rectangular fluid channel and a 25 control loop to tune the acoustic sound generating means in order to achieve a desired micro-organism concentration performance.
4. Disinfection reactor for disinfection for drinking water according to one of the previous clauses 1-3.
5. Method for disinfection of a liquid by UV radiation characterized by a device 30 descbribed by one of the previous clauses 1-4.
35 1039050
Claims (5)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1039050A NL1039050C2 (en) | 2011-09-19 | 2011-09-19 | Device and method for a uv disinfection reactor. |
| PCT/NL2012/050660 WO2013043047A1 (en) | 2011-09-19 | 2012-09-19 | Device and method for disinfecting a liquid with acoustic waves and uv radiation |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1039050 | 2011-09-19 | ||
| NL1039050A NL1039050C2 (en) | 2011-09-19 | 2011-09-19 | Device and method for a uv disinfection reactor. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL1039050C2 true NL1039050C2 (en) | 2013-03-21 |
Family
ID=47003174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL1039050A NL1039050C2 (en) | 2011-09-19 | 2011-09-19 | Device and method for a uv disinfection reactor. |
Country Status (2)
| Country | Link |
|---|---|
| NL (1) | NL1039050C2 (en) |
| WO (1) | WO2013043047A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2700505C1 (en) * | 2018-09-20 | 2019-09-17 | Сергей Алексеевич Бахарев | Method of reagent-free water filtration and disinfection |
| FR3095200A1 (en) * | 2019-04-18 | 2020-10-23 | Nabil DIFAÏ | WASTEWATER AND / OR SLUDGE POLLUTION DEGRADATION DEVICE |
| RU2708585C1 (en) * | 2019-07-16 | 2019-12-09 | Общество с ограниченной ответственностью "ТВК" | Device for disinfecting drinking water with uv radiation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3672823A (en) * | 1970-03-25 | 1972-06-27 | Wave Energy Systems | Method of sterilizing liquids |
| FR2442218A1 (en) * | 1978-11-27 | 1980-06-20 | Hyco & Aulas Ets | Sterilising flowing water etc.by ultraviolet irradiation - immediately preceded by ultrasonic vibration to enhance treatment efficiency |
| JPS6377592A (en) * | 1986-09-22 | 1988-04-07 | Ebara Res Co Ltd | Method and apparatus for treatment by ozone |
| WO2006080969A1 (en) * | 2004-11-17 | 2006-08-03 | Ashland Licensing And Intellectual Property Llc | Devices and methods for treating cooling fluids utilized in tire manufacturing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006027227A1 (en) * | 2006-06-12 | 2008-01-03 | DRK - Blutspendedienst Baden-Württemberg-Hessen GmbH | Method and device for inactivating viruses and / or bacteria in liquid media, in particular in blood plasmas and serum conserves |
| DE102008008892B4 (en) * | 2008-02-13 | 2011-07-21 | Aquaworx Holding Ag | Device for the treatment of liquids |
| US8865003B2 (en) * | 2008-09-26 | 2014-10-21 | Abbott Laboratories | Apparatus and method for separation of particles suspended in a liquid from the liquid in which they are suspended |
-
2011
- 2011-09-19 NL NL1039050A patent/NL1039050C2/en active
-
2012
- 2012-09-19 WO PCT/NL2012/050660 patent/WO2013043047A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3672823A (en) * | 1970-03-25 | 1972-06-27 | Wave Energy Systems | Method of sterilizing liquids |
| FR2442218A1 (en) * | 1978-11-27 | 1980-06-20 | Hyco & Aulas Ets | Sterilising flowing water etc.by ultraviolet irradiation - immediately preceded by ultrasonic vibration to enhance treatment efficiency |
| JPS6377592A (en) * | 1986-09-22 | 1988-04-07 | Ebara Res Co Ltd | Method and apparatus for treatment by ozone |
| WO2006080969A1 (en) * | 2004-11-17 | 2006-08-03 | Ashland Licensing And Intellectual Property Llc | Devices and methods for treating cooling fluids utilized in tire manufacturing |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013043047A1 (en) | 2013-03-28 |
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