NL1039051C2 - Filter and filtration method for purifying and/or sampling a liquid. - Google Patents

Filter and filtration method for purifying and/or sampling a liquid. Download PDF

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Publication number
NL1039051C2
NL1039051C2 NL1039051A NL1039051A NL1039051C2 NL 1039051 C2 NL1039051 C2 NL 1039051C2 NL 1039051 A NL1039051 A NL 1039051A NL 1039051 A NL1039051 A NL 1039051A NL 1039051 C2 NL1039051 C2 NL 1039051C2
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Netherlands
Prior art keywords
liquid
channel
sensor
nodes
fluid channel
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NL1039051A
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Dutch (nl)
Inventor
Hendrik Jannis Cappon
Karel Jacob Keesman
Mateo Jozef Jacques Mayer
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Stichting Wetsus Ct Excellence Sustainable Water Technology
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Priority to NL1039051A priority Critical patent/NL1039051C2/en
Priority to PCT/NL2012/050658 priority patent/WO2013043045A2/en
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Publication of NL1039051C2 publication Critical patent/NL1039051C2/en

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    • 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
    • C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
    • G01N1/2035—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials by deviating part of a fluid stream, e.g. by drawing-off or tapping
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • G01N33/1826—Organic contamination in water
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/14—Optical investigation techniques, e.g. flow cytometry
    • G01N15/1404—Handling flow, e.g. hydrodynamic focusing
    • G01N2015/142—Acoustic or ultrasonic focussing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Water Supply & Treatment (AREA)
  • Mechanical Engineering (AREA)
  • Pathology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (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.

Description

I {
Filter and filtration method for purifiying and / or sampling a liquid
The present invention relates to a device and method for purifying and / or sampling a liquid comprising at least one first cilindrical or rectangular fluid channel with a fluid inlet and a fluid outlet, at least a second and preferably also a third fluid side channel both connected 5 to the first cilindrical or rectangular fluid channel, at least one and preferably two acoustic wave generating means that are connected to the second and 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 generated waves such that at least two node lines 10 or node regions 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 remove particles from a fluid in a channel and / or to concentrate particles in a fluid channel using acoustic wave generating means, 15 without the need of placing internals or other rigid constructions in the fluid channel. As a result, both a particle concentrate and a purified fluid are obtained. Analysis of the particle concentrate or purified fluid instead of the original sample, will improve the performance and sensitivity of a sensor system in series with the concentration and purification method considerably.
20
Introduction
In the chemical process industry and the water purification industry, online sensoring methods to detect and analyze particles such as inorganic salts, aggregated humic acids and micro-organisms are vital to ensure product quality or safety of water produced.
25 One of the major challenges in the development of low cost - low maintenance online particle sensors with a low detection limit is the realization of a simple, accurate and reliable device for the concentration of particles. Prior art devices such as 0.2 micron pore size bacterium filters and microfiltration filters require offline sample preparation and / or regular maintenance to achieve both the required sample concentration and reliability of the 30 sampling procedure. Additionally, a sample concentration step with prior art devices results in a change of the particle shape, morphology or even in the number of particles due to particle aggregation, particle dissociation or, in case of bacteria or other living organisms, in the killing and or disappearance of particles.
The technology according to the present invention provides a method and device for a low 35 cost - low maintenance sample concentration device that can be used to concentrate fluids containing particles or particle aggregates without changing the properties of these particles.
1039051 i r 2
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 rectangular fluid channel with a fluid inlet and a fluid outlet. This first cilindrical or rectangular fluid channel is preferably equipped with at least an inlet and an outlet to enable 5 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 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 10 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 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 15 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.
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 20 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 measurements, conductivity measurements, pH measurements, temperature measurements. In case temperature measurements are applied, these measurements 25 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 channel and / or connected to the inner wall 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 30 a microprocessor, preferably to a microcontroller, preferably by the use of an analog to digital converter.
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.
35 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 3 lines particles will collect, resulting in a fluid filter and / or a particle concentration device. 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. According to a seventh aspect, the present invention relates to an automated filter system 5 comprising one or more of aspects 1 to 6 and software to filter particles from a fluid that is present in and / or pumped through the first cilindrical or rectangular channel in such a way that these particles collect in the node lines generated in the first cilindrical or rectangular channel. Additionally and preferably, the particles collected in the node lines are released by switching off the acoustic sound wave generating means so that they can be analyzed and / 10 or fed into a sensor. Additionally and even more preferably, the sensor and the first cilindrical or rectangular fluid channel are designed such that the sensor can detect the particles when they are immobilized in the node lines. In this particular case, the sensor signal changes as a function of time as long as particles are filtered from the fluid. The course of the changes in the signal (amplitude) as a function of time contains valuable 15 information on for example the number, the shape and other physical properties of the particles such as dielectric permittivity or specific density. By the use of software, the filter can be flushed online by switching off the acoustic sound generating means as soon as the desired data have been collected and / or a steady state in the filtration process has been achieved.
20 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.
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 25 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 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 30 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 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 35 is noted that other shapes of the fluid side channels than cilindrical or rectangular are possible.
Now the basics aspects of the technology according to the present invention have been
I I
4 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 filtration system for drinking water. In this embodiment, drinking water is filtered using a system according to one or more previously 5 specified aspects 1 to 7. The filtered water is subsequently fed into a sensor for analyzing the water. In this way, fouling and or clogging of the water sensor is prevented. Regularly, the filtration system according to the present invention is automatically cleaned. One of the many examples of sensoring systems that are feasible for application in combination with the technology according to the present invention are sensors comprising filters such as RO 10 membranes and nanofiltration membranes e.g., for measuring the osmotic pressure of a fluid and gas and / or liquid chromatography sensors.
A second preferred embodiment of the present invention comprises application of the technology according to the present invention as a preconcentration system for drinking water. In this particular case, the technology according to the present invention is applied 15 again as a filter i.e., similarly as described in the first preferred embodiment. However, in this particular case, the particles that are filtered from the drinking water are further analyzed. One of the many examples of sensoring systems that are feasible for application in combination with the technology according to the present invention are sensors for detecting and / or analyzing bacteria, particles and particle size distributions.
20 A third preferred embodiment comprises application of the technology according to the present invention in combination with a so-called coax sensor. In this particular case the sensor is applied as a preconcentration system and sensor at the same time. An example of a coax sensor is an open ended quarter wave length coaxial stub. Such a sensor can be applied as line flowthrough sensor with fluid inlet and fluid outlet. Depending of the 25 dielectric properties of the fluid pumped through the coaxial stub, the resonant frequency and quality factor of the filter will change. By equipping the coaxial stub with fluid side channels and acoustic wave generating means according to the present invention, a coax sensor with integrated particle concentration system is obtained. In fact, the coaxial stub is in this case applied as first cilindrical or rectangular fluid channel according to the present 30 invention. It is noted that the particle concentrator can be switched off easily by switching off the acoustic sound generating means. In this way, the concentrator is flushed. Preferably, the diameter of the side channels, connected to the first cilindrical or rectangular fluid channel according to the present invention, is sufficiently small to avoid undesired interaction of the side channel with the electromagnetic waves fed to the coaxial stub.
35 A fourth preferred embodiment of the present invention comprises application of the technology according to the present invention as preconcentrator and filter at the same time: after filtering a fluid to be analyzed, both the concentrated particle suspension and the 5 filtered fluid are fed into one or more sensors in order to determine the fluid properties and the properties of the particles separately.
A fifth preferred embodiment of the present invention comprises application of the technology according to the present invention with a first cilindrical or rectangular channel 5 that is equipped with internals i.e., geometrical structures, in order to optimize the filtration effectiveness of the node lines inside of the first cilindrical or rectangular channel.
A sixth preferred embodiment of the present invention comprises application of the technology according to the present invention for analyzing other types of fluids than drinking water e.g., waste water, process water from chemical industry, fruit juices, milk, 10 mineral oil products.
The frequency of the acoustic waves applied in the technology according to the present invention is in the range of 100 Hz to 1 GHz. Preferably ultrasound is applied. More preferably ultrasound in the frequency range between 20 kHz and 100 MHz is applied. Finally, it is noted that the technology according to the present invention brings along 15 following advantages as compared to prior art particle filtration and / or concentration methods: 1. Absence or at least strong reduction of fouling of the filter or particle concentration device 2. Absence of pressure drop during the filtration / particle concentration process 20 3. Concentration / filtration without destruction of fragile particles and / or fragile aggregates of particles mainly because of the absence of a filter cake 4. Simpler cleaning procedure of the particle concentrator / filter through switching off the acoustic wave generating means 5. Well defined immobilization of the particles at well defined node lines or node 25 regions bringing along possibilities for inline analysis of particles 6. Possibilities to concentrate particles inside of a sensor e.g., a coax sensor thereby opening possibilities to combine particle concentration and analysis.
7. Absence of internals in the filter / concentrator or at least possibilities for a very low volume fraction of internals in the filter concentrator 30 Additionally, it is noted that the technology according to the present invention will result in a lattice of volume elements containing high particle concentrations (node lines and / or node regions) and volume elements containing low particle concentrations. This contrary to "small cilindrical plates (thin discs)" perpendicular to the axial direction of the first channel, containing a high concentration of particles.
35 This lattice of volume elements containing a high concentration of particles results in a better filter performance as compared to the situation that thin discs are present as nodes in the first cilindrical channel for at least 2 reasons: I 1 * 6 1. Not all particles have to pass the node region. Therefor, there will be less steric hindrance of the particles, resulting in a higher concentration factor in the node regions.
2. In the lattice of node regions, not all nodes will have the same properties, opening 5 possibilities to capture particles of different size within one and the same device.
Also, it is noted that an increase of the number of fluid side channels equipped with acoustic sound generating means is equivalent to applying a lower number of fluid side channels equipped with acoustic sound generating means at a higher acoustic wave frequency.
Hence, a design parameter is obtained to realize a good filter performance at any desired 10 frequency of the acoustic waves. This may be important since some particles (e.g., bacteria) or particle aggregates are destroyed at their resonant frequency. From this reasoning, it is concluded that, if desired, the technology according to the present invention can be designed such that the particles are destroyed. Also, it can be ensured that no particles are destroyed in the first cilindrical or rectangular fluid channel.
15 Finally it is noted that the lattice of node regions results in a much better distribution of the particles over the fluid volume in the first cilindrical or rectangular fluid channel. This may be an important advantage above prior art technology in case the first cilindrical or rectangular fluid channel is used as a sensor at the same time. A non limiting example of such advantage is the application of a first cilindrical or rectangular fluid channel as a particle 20 concentrator and coax sensor at the same time. In this particular case, homegeneously distributed particles over the fluid within the first cilindrical fluid channel will result in an effective dielectric permittivity of the particle suspension that hardly changes as a function of the length coordinate of the first cilindrical or rectangular fluid channel. As a result, the properties and / or volume fraction of particles within the coax sensor can be determined 25 from the resonant frequency of the coaxial stub.
Based upon these advantages above prior art, a person skilled in the art of particle concentration / filtration will recognize that the technology according to the present invention is very feasible for realizing reliable and fully automated particle concentration / filtration solutions in a wide variety of applications.
30 The present invention is not limited to the above described example embodiments thereof; the rights sought are defined by the following claims, within the scope of which many modifications can be envisaged.
35 7
Clauses 1. Device for purifying and / or sampling a liquid through particle filtration and / or particle concentration comprising • at least one first fluid channel with a fluid inlet and a fluid outlet 5 «at least a second fluid side channel 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.
• acoustic wave generating means connected to at least the second fluid side channel, the acoustic wave generating means being capable to produce 10 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 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 15 at least two node lines or node regions and the axial direction of the first cilindrical or rectangular fluid channel, resulting in particle being trapped in and / or near the node lines or node regions.
2. Device according to clause 1 further comprising at least a microprocessor and software to control the acoustic wave generating means thereby steering the particle 20 concentration and / or filtration process.
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 control loop to tune the acoustic sound generating means in order to achieve a desired particle filtration and / or concentration performance.
25 4. Fully automated filter or particle concentrator according to one of the previous clauses 1-3.
5. Sensor comprising a device according to clauses 1-4 whereby the particles immobilized in the node lines within the first cilindrical or rectangular fluid channel are analyzed in situ.
30 6. Sensor according to clause 5 whereby the first cilindrical or rectangular fluid channel performs as a coaxial stub i.e., a resonator for electromagnetic waves, at the same time.
7. Sensor for analysis of drinking water according to one of the previous clauses 1-6.
8. Sensor for analysis of waste water according to one of the previous clauses 1-6.
35 9. Sensor for detection and / or analysis of bacteria according to one of the previous clauses 1-8.
10. Method for purifying and / or sampling a liquid through particle filtration and / or
) I
8 particle concentration characterized by a device described by one of the previous clauses 1-9.
5 10 15 20 25 30 35 1039051

Claims (7)

1. Inrichting voor de zuivering en / of bemonstering van een vloeistof door middel van deeltjesfiltratie en / of deeltjesconcentratie gekenmerkt door • tenminste een eerste vloeistofkanaal met een instroomopening voor vloeistof 5 en een uitstroomopening voor vloeistof • tenminste een tweede vloeistof zijkanaal dat werkzaam verbonden is met het eerste cilindrisch vloeistofkanaal en waarvan de axiale as een hoek van tenminste 5 graden maakt met de axiale as van het eerste vloeistofkanaal. tenminste een inrichting voor het opwekken van acoustische golven die 10 werkzaam verbonden is met het tweede vloeistof zijkanaal en die interferentie van de acoustische golven opwekt in tenminste het eerste cilindrisch vloeistofkanaal • middelen om de inrichtingen voor het opwekken van acoustische golven te regelen opdat tenminste twee knooplijnen of knoopgebieden worden 15 gevormd in het eerste cilindrische vloeistofkanaal ten gevolge van interferentie met het kenmerk dat een significante hoek van tenminste 5 graden bestaat tussen tenminste twee knooplijnen of knoopgebieden en de axiale as van het eerste cilindrische vloeistofkanaal opdat deeltjes in en / of nabij de knooplijnen worden ingevangen.Device for the purification and / or sampling of a liquid by means of particle filtration and / or particle concentration characterized by • at least a first liquid channel with an inflow opening for liquid 5 and an outflow opening for liquid • at least a second liquid side channel which is operatively connected to the first cylindrical fluid channel and whose axial axis makes an angle of at least 5 degrees with the axial axis of the first fluid channel. at least one acoustic wave generating device operatively connected to the second fluid side channel and generating interference from the acoustic waves in at least the first cylindrical fluid channel means for controlling the acoustic wave generating devices so that at least two nodes or nodal regions are formed in the first cylindrical fluid channel due to interference, characterized in that there is a significant angle of at least 5 degrees between at least two nodes or nodal regions and the axial axis of the first cylindrical fluid channel so that particles in and / or near the nodes be trapped. 1. Inrichting voor de zuivering en / of bemonstering van een vloeistof door middel van deeltjesfiltratie en / of deeltjesconcentratie gekenmerkt door • tenminste een eerste vloeistofkanaal met een instroomopening voor vloeistof 5 en een uitstroomopening voor vloeistof • tenminste een tweede vloeistof zijkanaal dat werkzaam verbonden is met het eerste cilindrisch vloeistofkanaal en waarvan de axiale as een hoek van tenminste 5 graden maakt met de axiale as van het eerste vloeistofkanaal. • tenminste een inrichting voor het opwekken van acoustische golven die 10 werkzaam verbonden is met het tweede vloeistof zijkanaal en die interferentie van de acoustische golven opwekt in tenminste het eerste cilindrisch vloeistofkanaal • middelen om de inrichtingen voor het opwekken van acoustische golven te regelen opdat tenminste twee knooplijnen of knoopgebieden worden 15 gevormd in het eerste cilindrische vloeistofkanaal ten gevolge van interferentie met het kenmerk dat een significante hoek van tenminste 5 graden bestaat tussen tenminste twee knooplijnen of knoopgebieden en de axiale as van het eerste cilindrische vloeistofkanaal opdat deeltjes in en / of nabij de knooplijnen worden ingevangen.Device for the purification and / or sampling of a liquid by means of particle filtration and / or particle concentration characterized by • at least a first liquid channel with an inflow opening for liquid 5 and an outflow opening for liquid • at least a second liquid side channel which is operatively connected to the first cylindrical fluid channel and whose axial axis makes an angle of at least 5 degrees with the axial axis of the first fluid channel. At least one device for generating acoustic waves which is operatively connected to the second liquid side channel and which causes interference of the acoustic waves in at least the first cylindrical liquid channel; means for controlling the devices for generating acoustic waves so that at least two nodes or nodes are formed in the first cylindrical fluid channel due to interference characterized in that there is a significant angle of at least 5 degrees between at least two nodes or nodes and the axial axis of the first cylindrical fluid channel so that particles in and / or near the nodes are trapped. 2. Inrichting volgens conclusie 1 vermeerderd met tenminste een microprocessor en software om de inrichtingen voor het opwekken van acoustische golven te regelen en daarmee het filtratie- en / of concentratieproces van de deeltjes te sturen.Device according to claim 1 plus at least one microprocessor and software for controlling the acoustic wave generation devices and thereby controlling the filtration and / or concentration process of the particles. 2. Inrichting volgens conclusie 1 vermeerderd met tenminste een microprocessor en software om de inrichtingen voor het opwekken van acoustische golven te regelen en daarmee het filtratie- en / of concentratieproces van de deeltjes te sturen.Device according to claim 1 plus at least one microprocessor and software for controlling the acoustic wave generation devices and thereby controlling the filtration and / or concentration process of the particles. 3. Inrichting volgens een van de voorgaande conclusies 1 of 2 vermeerderd met tenminste een sensor om de eigenschappen van de vloeistof in het eerste 25 cilindrische vloeistofkanaal te meten en een control loop om de inrichtingen voor het opwekken van acoustische golven zodanig in te stellen dat het filtratieproces en / of het deeltjesconcentratieproces op de gewenste wijze verloopt.3. Device as claimed in any of the foregoing claims 1 or 2 plus at least one sensor for measuring the properties of the liquid in the first cylindrical liquid channel and a control loop for adjusting the devices for generating acoustic waves such that the filtration process and / or the particle concentration process proceeds in the desired manner. 3. Inrichting volgens een van de voorgaande conclusies 1 of 2 vermeerderd met tenminste een sensor om de eigenschappen van de vloeistof in het eerste 25 cilindrische vloeistofkanaal te meten en een control loop om de inrichtingen voor het opwekken van acoustische golven zodanig in te stellen dat het filtratieproces en / of het deeltjesconcentratieproces op de gewenste wijze verloopt.3. Device as claimed in any of the foregoing claims 1 or 2 plus at least one sensor for measuring the properties of the liquid in the first cylindrical liquid channel and a control loop for adjusting the devices for generating acoustic waves such that the filtration process and / or the particle concentration process proceeds in the desired manner. 4. Volledig geautomatiseerd filter of volledig geautomatiseerde deeltjesconcentrator volgens een van de voorgaande conclusies 1 t/m 3.Fully-automated filter or fully-automated particle concentrator according to one of the preceding claims 1 to 3. 4. Volledig geautomatiseerd filter of volledig geautomatiseerde deeltjesconcentrator volgens een van de voorgaande conclusies 1 t/m 3.Fully-automated filter or fully-automated particle concentrator according to one of the preceding claims 1 to 3. 5. Sensor tenminste omvattend een inrichting volgens een van de voorgaande conclusies 1 t/m 4 waarbij de deeltjes die zijn geimmobiliseerd in de knooplijnen of knoopgebieden van het eerste cilindrisch vloeistofkanaal in situ worden geanalyseerd.Sensor at least comprising a device according to any of the preceding claims 1 to 4, wherein the particles immobilized in the nodes or nodes of the first cylindrical fluid channel are analyzed in situ. 5. Sensor tenminste omvattend een inrichting volgens een van de voorgaande conclusies 1 t/m 4 waarbij de deeltjes die zijn geimmobiliseerd in de knooplijnen of knoopgebieden van het eerste cilindrisch vloeistofkanaal in situ worden geanalyseerd.Sensor at least comprising a device according to any of the preceding claims 1 to 4, wherein the particles immobilized in the nodes or nodes of the first cylindrical fluid channel are analyzed in situ. 6. Sensor volgens conclusie 5 waarbij het eerste cilindrisch vloeistof kanaal tevens een 35 coaxsensor i.e., een resonator voor elektromagnetische golven, is.6. Sensor as claimed in claim 5, wherein the first cylindrical liquid channel is also a coax sensor, i.e., a resonator for electromagnetic waves. 6. Sensor volgens conclusie 5 waarbij het eerste cilindrisch vloeistof kanaal tevens een 35 coaxsensor i.e., een resonator voor elektromagnetische golven, is.6. Sensor as claimed in claim 5, wherein the first cylindrical liquid channel is also a coax sensor, i.e., a resonator for electromagnetic waves. 7. Sensor voor analyse van drinkwater volgens een van de voorgaande conclusies 1 t/m 6. 1039051 9Sensor for drinking water analysis according to one of the preceding claims 1 to 6. 1039051 9 7. Sensor voor analyse van drinkwater volgens een van de voorgaande conclusies 1 t/m 6. 1039051Sensor for drinking water analysis according to one of the preceding claims 1 to 6. 1039051
NL1039051A 2011-09-19 2011-09-19 Filter and filtration method for purifying and/or sampling a liquid. NL1039051C2 (en)

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