WO2021177505A1 - Dispositif d'élimination de la turbidité par ultrasons - Google Patents

Dispositif d'élimination de la turbidité par ultrasons Download PDF

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Publication number
WO2021177505A1
WO2021177505A1 PCT/KR2020/004930 KR2020004930W WO2021177505A1 WO 2021177505 A1 WO2021177505 A1 WO 2021177505A1 KR 2020004930 W KR2020004930 W KR 2020004930W WO 2021177505 A1 WO2021177505 A1 WO 2021177505A1
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WO
WIPO (PCT)
Prior art keywords
ultrasonic
removal device
turbidity removal
cover
filter
Prior art date
Application number
PCT/KR2020/004930
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English (en)
Korean (ko)
Inventor
박석원
김성태
권경안
김대원
장정화
조유경
Original Assignee
(주) 테크로스
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Publication date
Application filed by (주) 테크로스 filed Critical (주) 테크로스
Publication of WO2021177505A1 publication Critical patent/WO2021177505A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/34—Purifying; Cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
    • B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations
    • B01D46/762—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations involving sonic or ultrasonic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
    • G01N2001/4088—Concentrating samples by other techniques involving separation of suspended solids filtration

Definitions

  • the present invention relates to an ultrasonic turbidity removal device, and more particularly, to an ultrasonic turbidity removal device capable of stably measuring the number of samples even when sample water with high turbidity is introduced.
  • ballast water is introduced into the vessel to improve the balance, safety, and steering performance of the vessel, and the voyage is performed in a ballast state.
  • the ballast water is filled in one port and transported to another, where it is discharged into the new port.
  • the release of marine organisms and pathogens contained in the ballast water carried from a distant location is not only harmful to the new environment, but also can be dangerous to both humans and animals in the new port.
  • non-natural marine life into a new ecosystem can have devastating effects on native flora and fauna that may not have natural defenses against the new species.
  • harmful bacterial pathogens such as cholera may be present in the original port. These pathogens can multiply in the ballast tanks over time and cause disease in the area where they are released.
  • the electrolysis method is mainly used to sterilize the ballast water, and the ballast water treatment system using the electrolysis method is equipped with a TRO sensor for measuring the TRO of the ballast water.
  • TRO is an abbreviation of "Total Residual Oxidant", meaning the total residual oxidizing agent present in the ballast water, and the chlorine generated through the electrolysis process oxidizes the aquatic organisms in the ballast water and the remaining chlorine It is determined by measuring the residual chlorine level.
  • TRO is replaced with atoms such as bromine instead of active chlorine, and various kinds of oxidizing agents coexist. It refers to all active oxidizing agents present.
  • a TRO sensor using a DPD reagent that is less sensitive to changes in water quality is mainly used.
  • the present invention has been devised to solve the above problems, and in particular, it is an object of the present invention to provide an ultrasonic turbidity removal device capable of stably measuring the number of samples even when the turbidity of the sample water is high.
  • the ultrasonic turbidity removal device devised to achieve the above object is provided with an inlet and an outlet, and a flow path through which the sample water introduced into the inlet is discharged through the outlet is formed inside, and the inlet is introduced into the inlet.
  • a housing provided with a sampling unit connected to one side of the flow path so that the sample water is discharged to the sample number measuring device; a filter installed inside the housing to filter the sample water discharged to the sampling unit; and an ultrasonic vibrator installed on one side of the housing.
  • the housing includes a first cover having a seating portion on which a filter is installed, a sampling portion, and a second cover coupled to the first cover and having a flow path.
  • the seating part may be provided with a plurality of spacing protrusions so that a separation space is formed between the filter and the first cover so that the sample water passing through the filter flows to the sampling part, and a through hole connected to the sampling part may be formed.
  • the filter may be formed in a plate shape and seated on a seating portion, and may be configured as, for example, a sintered metal filter.
  • the second cover is formed in a plate shape having a predetermined thickness, and has an inner surface facing the first cover and an outer surface facing away from the first cover, and the flow path includes an inner surface and an outer surface. It can be formed through.
  • a concave portion is formed on the outer surface of the second cover to have a width including the flow path, and an ultrasonic vibrator fixing plate installed in the concave portion may be further included.
  • the flow path may include at least one direction changer for changing the flow direction.
  • the flow path according to an embodiment of the present invention may be formed in a rectangular cross-section having a longer length in the direction of the inner surface and the outer surface, and at least a portion of the direction changing part is formed to be round.
  • the flow path flows in the second direction opposite to the first direction through the first direction change unit that is turned 180 degrees after being introduced in the first direction, and goes through the second direction change unit that is turned 180 degrees again After flowing in the first direction, it may flow in the second direction through a third direction changing unit that is turned 180 degrees.
  • the second cover is formed with an inlet hole and an outlet hole respectively connected to the inlet and outlet, and the inner diameter of the inlet hole may be formed to be larger than the inner diameter of the outlet hole.
  • the flow path may be configured such that the sample water flows in a laminar flow.
  • an inlet and an outlet may be provided on at least one thickness surface of the second cover, and the inlet and outlet may be configured to be respectively connected to both ends of the flow path.
  • the ultrasonic vibrator according to an embodiment of the present invention may be turned off during sampling in which the sample water is discharged through the sampling unit, and may be turned on during bypass in which the sample water is discharged only to the discharge unit without being discharged to the sampling unit.
  • the flow rate of the sample water is increased by extending the flow path while changing the direction, so that the sample water is uniformly mixed, thereby improving the measurement accuracy of the sample number.
  • the present invention by forming a flow path so that the sample water flows in a laminar flow state, the generation of air bubbles is minimized when the sample water flows, so that the vibration of the ultrasonic vibrator is well transmitted to the filter, thereby increasing the cleaning effect.
  • FIG. 1 is an exploded perspective view of an ultrasonic turbidity removal device according to an embodiment of the present invention
  • FIG. 2 is a combined perspective view of an ultrasonic turbidity removal device according to an embodiment of the present invention
  • Figure 3 is a perspective view of the first cover provided in the ultrasonic turbidity removal device according to an embodiment of the present invention
  • Figure 4 is a perspective view of a second cover provided in the ultrasonic turbidity removal device according to an embodiment of the present invention
  • FIG. 5 is a side view of a second cover provided in the ultrasonic turbidity removal device according to an embodiment of the present invention.
  • FIG. 6 is a plan view of a second cover provided in the ultrasonic turbidity removal device according to an embodiment of the present invention, showing the bypass flow of sample water;
  • FIG. 7 shows the flow of the ultrasonic turbidity removal device according to an embodiment of the present invention when the sample water is bypassed and the clay separated from the filter
  • FIG. 8 shows the flow in the ultrasonic turbidity removal device according to an embodiment of the present invention during sampling of sample water and clay attached to the filter surface.
  • Figure 1 is an exploded perspective view of an ultrasonic turbidity removal device according to an embodiment of the present invention
  • Figure 2 is a combined perspective view of an ultrasonic turbidity removal device according to an embodiment of the present invention
  • Figure 3 is an embodiment of the present invention
  • Figure 4 is a perspective view of the second cover provided in the ultrasonic turbidity removal device according to an embodiment of the present invention
  • Figure 5 is an embodiment of the present invention It is a side view of the second cover provided in the ultrasonic turbidity removal device according to the.
  • the ultrasonic turbidity removal apparatus 100 includes a housing 10 having an inlet and an outlet to form an external appearance and to allow sample water to flow in and to be discharged; It includes a filter 140 installed inside the 10 to filter the number of samples to be sampled, and an ultrasonic vibrator 135 installed on one side of the housing 10 to generate vibration to ultrasonically clean the filter 140 . .
  • the housing 10 may be formed in various shapes, and in one embodiment of the present invention may be formed in a substantially rectangular shape having a predetermined thickness.
  • the housing 10 can be disassembled and assembled, so that the filter 140 can be easily installed inside and the maintenance and repair are convenient, the first cover 110 and the second cover 120 are separated and a plurality of nuts ( 171) and the bolt 135 may be configured to be fastened.
  • at least one gasket 151 , 153 is installed between the first cover 110 and the second cover 120 to improve sealing properties.
  • the housing 10 may further include an ultrasonic vibrator fixing plate 130 on which the ultrasonic vibrator 135 is mounted.
  • the first cover 110 has a seating part 111 formed on the inner surface so that the filter 140 is installed inside, and the sampling part 115 on the outer surface to discharge the number of samples to a sample number measuring device (not shown). is provided
  • the seating part 111 is configured to form a space between the filter 140 and the first cover 110 by being provided with a plurality of spacer protrusions 111a as shown in FIG. 3 . Accordingly, after the sample water that has passed through the filter 140 is moved through the separation space, the sample water is discharged through the through hole 112 formed on one side of the seating part 111 .
  • the through hole 112 is connected to the sampling unit 115 .
  • the second cover 120 is coupled to the first cover 110 , and as shown in FIG. 4 , a flow path 121 is formed so that the sample water flows in and flows along the flow path 121 and then discharged.
  • the second cover 110 may be formed in a plate shape having a predetermined thickness, and an inner surface facing the first cover 110 and an outer surface facing away from the first cover 110 .
  • the flow path 121 may be formed through the inner surface and the outer surface.
  • the filter 140 is installed in the inner side direction
  • the ultrasonic vibrator fixing plate 130 is installed in the outer side direction, so that the flow path 121 is formed to have a substantially rectangular cross section as a whole.
  • an inlet 125 and an outlet 126 are provided on at least one thickness surface of the second cover 120 .
  • the inlet 125 and the outlet 126 are respectively connected to both ends of the flow path 121 formed therein, as shown in FIG. 5 , an inlet hole 123 and an outlet hole 124 formed through the thickness surface. are each connected to
  • the inlet hole 123 and the outlet hole 124 can be configured to generate an internal pressure in the inside of the ultrasonic turbidity removal apparatus 100 , that is, the flow path 121 .
  • the inner diameter of the inlet hole 123 is formed larger than the inner diameter of the discharge hole 124 so that a positive (+) pressure is generated inside the ultrasonic turbidity removal device 100, thereby sampling by the formed internal pressure. Sampling through the unit 115 may be smoothly performed.
  • the inlet hole 123 and the outlet hole 124 may be designed to have inner diameters in consideration of the installation height of a sample number measuring device (not shown) to which the sampled sample water is supplied.
  • the sample number measuring device (not shown) may be installed above or below the ultrasonic turbidity removal device 100 of the present invention, for example, when installed on the upper side, the inner diameter difference between the inlet hole 123 and the outlet hole 124 It can be designed to the extent that the number of samples can be introduced into the upper sample number measuring device (not shown) by the differential pressure generated by the .
  • the sampling unit 115 provided in the first cover 110 is connected to one side of the flow path 121 . That is, the sample water that has passed through the filter 140 is discharged to the sampling unit 115 through the through-hole 112 formed on one side of the seating unit 111 , and a part of the sample number flowing along the flow path 121 is sampled.
  • the number of samples is supplied to a sample number measuring device (not shown), for example, a TRO measuring device.
  • the flow path 121 is formed to have a small cross-sectional area and to be long in the longitudinal direction so as to increase the speed of the introduced sample water.
  • the flow path 121 forms an approximately square shape on a plane to correspond to the shape in which the ultrasonic vibrator 135 is disposed so as to receive the vibration of the ultrasonic vibrator 135 that applies vibration to the flow path 121 well.
  • the flow path 121 according to an embodiment of the present invention is provided with at least one direction changer (121a, 121b, 121c) for changing the flow direction, and the flow path 121 is concentrated around the ultrasonic vibrator 135. make it
  • the flow path 121 is opposite to the first direction through the first direction changing part 121a that is turned 180 degrees after flowing in the first direction (left direction in the drawing) as shown in FIG. It flows in the second direction (the right direction in the drawing), flows in the first direction again through the second direction change unit 121b that is turned 180 degrees, and then flows in the first direction, and then the third direction change unit 121c that is turned 180 degrees ) to flow in the second direction.
  • At least a part of the direction change parts 121a, 121b, and 121c may be formed to be round (R), and by being configured in this way, the flow proceeds smoothly in the direction change parts 121a, 121b, and 121c, and the dead volume ( Dead volume) can be reduced.
  • the flow path 121 is formed in a rectangular cross-section having a longer length in the inner and outer surface directions of the second cover 120 so that the vibration generated by the ultrasonic vibrator 135 proceeds. By exposing a relatively larger surface area in the direction of 140)) to effectively peel off foreign substances.
  • the flow path 121 is preferably configured to flow in a laminar flow so that the introduced sample water is minimized to minimize the generation of bubbles and to minimize the interference of the ultrasonic waves. Whether the flow is laminar or turbulent is determined by the Reynolds number below.
  • v is the average flow velocity in the flow path (m/sec)
  • d is the inner diameter of the flow path (m)
  • v is the dynamic viscosity of the liquid (m 2 /sec).
  • the Reynolds number calculated by the above equation should be less than 2100. Therefore, the average flow rate and the inner diameter of the flow path 121 should be designed to be a laminar flow.
  • the flow velocity in the flow path 121 is increased so that the number of samples is uniformly mixed and the ultrasonic transfer effect of the ultrasonic vibrator 135 is large. Since it is designed quickly (approximately 2-3 m/s), the cross-sectional area of the flow path 121 should be reduced accordingly.
  • the cross-section is formed to be longer in length to improve ultrasonic cleaning power in the direction of the inner and outer surfaces of the second cover 120, and the surfaces perpendicular thereto are formed in a short rectangular shape.
  • a flow path 121 of a baffle type may be applied.
  • the baffle factor of the flow path 121 may be calculated by the following equation.
  • the baffle factor is preferably in the range of 0.6 to 0.8, more preferably about 0.7.
  • the ultrasonic turbidity removal apparatus 100 it is important to maintain a laminar flow in the flow path 121 .
  • turbulent flow occurs, disturbance of the sample water flow may occur or dead volume may be formed, and the possibility of generating air bubbles increases.
  • bubbles are generated, ultrasonic transfer from the ultrasonic vibrator 135 is prevented by the bubbles, so that the separation efficiency of foreign substances attached to the filter 149 is lowered, and the ultrasonic vibrator 135 is also damaged.
  • the direction changing parts 121a, 121b, and 121c are formed to be rounded to minimize the dead volume and maintain the laminar flow condition in the flow path 121, thereby increasing the baffle factor in this range. be able to have
  • a concave portion 127 may be formed on the outer surface of the second cover 120 to have an area including the flow path 121 .
  • the ultrasonic vibrator fixing plate 130 on which the ultrasonic vibrator 135 is fixedly mounted may be seated and installed in the concave portion 127 .
  • the ultrasonic vibrator fixing plate 130 is preferably made of a stainless material so that the ultrasonic vibrator 135 that generates vibration is firmly installed and can transmit vibrations well, and may be fastened by a plurality of bolts 175 .
  • a gasket 155 is installed between the ultrasonic vibrator fixing plate 130 and the recess 127 to prevent the sample water flowing through the flow path 121 from leaking to the outside.
  • the first cover 110 and the second cover 120 according to an embodiment of the present invention are preferably formed of PVC, which is a material that has excellent corrosion resistance and workability and can effectively absorb the vibration of the ultrasonic vibrator 135 . do.
  • the filter 140 is formed in a plate shape and is seated on the seating portion 111 formed on the inner surface of the first cover 110 .
  • the filter 140 should have a high removal efficiency of clay that may be included in seawater with high turbidity, and to smoothly sample the number of samples that pass through the filter 140 and be discharged to a sample number measuring device (not shown). Adequate flux must be ensured.
  • a filter that satisfies this, there is a sintered metal filter.
  • the sintered metal filter is made of a stainless material, the pores are designed to be about 2 ⁇ m to remove the clay, and the porosity is about 60%.
  • the frequency of the ultrasonic vibrator 135 is approximately 40 kHz to 1 MHz, particularly preferably 40 kHz, and the cleaning efficiency is the best under the conditions of 100 W, and the filter 140 is The passing flux can be kept constant.
  • FIG. 6 is a plan view of a second cover provided in the ultrasonic turbidity removal device according to an embodiment of the present invention, showing the bypass flow of sample water
  • FIG. 7 is an embodiment of the present invention when the sample water is bypassed. It shows the clay separated from the flow and filter in the ultrasonic turbidity removal device according to the present invention.
  • the first cover, the filter and the second cover are shown in a separated form in order to well express the flow and the clay separation state, but they are actually operated in a combined state.
  • components having the same reference numerals as those of FIGS. 1 to 5 are identical components that perform the same functions, and descriptions thereof will be omitted and the differentiated components will be mainly described.
  • the sample water flows in through the inlet 125 provided in the second cover 120 , and then the direction is changed 3 times through the direction changing parts 121a , 121b and 121c to flow. Then, the bypass flow is completed by being discharged through the discharge unit 126 . As such, the bypass flow is bypassed without being sampled by the sampling unit 115 to flow only through the flow path 121 .
  • the ultrasonic vibrator 135 is turned on and the vibration is transmitted to the filter 140 through the sample water.
  • the clay 180 attached to the filter 140 is discharged from the filter 140 and discharged to the outside of the ultrasonic turbidity removal device 100 by the bypass-flowing sample water to prevent clogging of the filter 140 .
  • the bypass flow may be carried out, for example, for 30 seconds.
  • FIG. 8 shows the flow in the ultrasonic turbidity removal device according to an embodiment of the present invention during sampling of sample water and clay attached to the filter surface.
  • the sample water flows along the flow path 121 provided in the second cover 120 during sampling, and some of the sample water is sampled through the sampling unit 115 branched from the flow path 121 , , the remainder is discharged through the discharge unit 126 .
  • the ultrasonic vibrator 135 is turned off, and as the sample water passes through the filter 140 and is discharged to the sampling unit 115 , the clay 180 is accumulated on the surface of the filter 140 .
  • the sampling may be performed for a longer period of time than during the bypass flow, for example, 60 seconds. Meanwhile, the accumulated clay 180 is removed while the ultrasonic vibrator 135 is turned on during the bypass flow of FIG. 7 as described above.
  • the first cover 110 is preferably installed so as to be positioned on the upper side and the second cover 120 is positioned on the lower side.
  • the clay 180 separated from the filter 140 falls downward by gravity, and the discharge part 126 is discharged through the flow path 121 of the second cover 120 located at the lower side.
  • the ultrasonic turbidity removal device 100 automatically removes the filter 140 clogging by quickly and effectively removing the clay 180 accumulated in the filter 140 through the ultrasonic vibrator 135 . can be prevented, and the sampling efficiency can be increased by making the sampling time (for example, 60 seconds) longer than the bypass time (for example, 30 seconds).
  • the sampling time and the bypass time are set in advance, it is possible to control the ultrasonic turbidity removal apparatus 100 according to an embodiment of the present invention through simple ON/OFF driving without the need for a separate complicated control means.
  • the ultrasonic turbidity removal device 100 extends while changing the direction of the flow path to increase the flow rate of the sample water so that the sample water is uniformly mixed as well as the sample water flows in a laminar flow state to cause bubbles By minimizing the occurrence of , the cleaning effect by the ultrasonic vibrator is increased.
  • the ultrasonic turbidity removal device 100 can be miniaturized by separating the contamination through filtering using the filter 140 membrane and ultrasonic cleaning through the ultrasonic vibrator 135, and is configured to be simple to separate/fasten, so as to maintain the replacement of consumables, etc. It has the advantage of being easy to manage.
  • the ultrasonic turbidity removal device 100 effectively lowers the turbidity of the sample water and enables stable measurement or analysis. installed and ready to use.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
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  • Engineering & Computer Science (AREA)
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Abstract

La présente invention concerne un dispositif d'élimination de la turbidité par ultrasons comprenant : un boîtier dans lequel un canal d'écoulement comportant une entrée et une sortie est formé de telle sorte que l'eau d'échantillonnage est introduite dans le canal d'écoulement par l'entrée et est évacuée du canal d'écoulement par la sortie, et qui comprend une partie d'échantillonnage reliée à un côté du canal d'écoulement de manière à évacuer l'eau d'échantillonnage introduite par l'entrée vers un dispositif de mesure d'eau d'échantillonnage ; un filtre qui est installé dans le boîtier de manière à filtrer l'eau d'échantillonnage évacuée par la partie d'échantillonnage ; et un transducteur à ultrasons qui est installé sur un côté du boîtier.
PCT/KR2020/004930 2020-03-04 2020-04-10 Dispositif d'élimination de la turbidité par ultrasons WO2021177505A1 (fr)

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KR1020200027408A KR102164207B1 (ko) 2020-03-04 2020-03-04 초음파 탁도제거장치
KR10-2020-0027408 2020-03-04

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882050A (en) * 1987-10-02 1989-11-21 Kopf Henry B Filter plate, filter plate element, and filter comprising same
KR20160073500A (ko) * 2014-12-16 2016-06-27 현대중공업 주식회사 평형수 잔류염소농도 측정장치 및 이를 포함하는 선박
US20160274010A1 (en) * 2013-12-03 2016-09-22 The University Of Tokyo Separation unit, separation method, fluid device, and composite fluid device and kit
KR20170098349A (ko) * 2016-02-19 2017-08-30 (주) 테크로스 전기화학식 tro 측정장치
KR102056939B1 (ko) * 2018-01-26 2019-12-17 (주)메타포어 진동자를 가진 생체분자 필터 및 이를 이용한 생체분자 동적 분리 장치

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5601713A (en) * 1994-12-06 1997-02-11 Nupro Company Filter systems and apparatus
KR101303349B1 (ko) 2011-12-02 2013-09-03 (주) 테크로스 연속측정방식의 티알오 측정장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882050A (en) * 1987-10-02 1989-11-21 Kopf Henry B Filter plate, filter plate element, and filter comprising same
US20160274010A1 (en) * 2013-12-03 2016-09-22 The University Of Tokyo Separation unit, separation method, fluid device, and composite fluid device and kit
KR20160073500A (ko) * 2014-12-16 2016-06-27 현대중공업 주식회사 평형수 잔류염소농도 측정장치 및 이를 포함하는 선박
KR20170098349A (ko) * 2016-02-19 2017-08-30 (주) 테크로스 전기화학식 tro 측정장치
KR102056939B1 (ko) * 2018-01-26 2019-12-17 (주)메타포어 진동자를 가진 생체분자 필터 및 이를 이용한 생체분자 동적 분리 장치

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