WO2013162297A1 - Système de stérilisation utilisant une diode électroluminescente - Google Patents

Système de stérilisation utilisant une diode électroluminescente Download PDF

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Publication number
WO2013162297A1
WO2013162297A1 PCT/KR2013/003556 KR2013003556W WO2013162297A1 WO 2013162297 A1 WO2013162297 A1 WO 2013162297A1 KR 2013003556 W KR2013003556 W KR 2013003556W WO 2013162297 A1 WO2013162297 A1 WO 2013162297A1
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WO
WIPO (PCT)
Prior art keywords
sterilization
water
microorganisms
unit
light
Prior art date
Application number
PCT/KR2013/003556
Other languages
English (en)
Inventor
Seong Min Lee
Young Hwan Son
Dae Woong Suh
Original Assignee
Seoul Opto Device Co., Ltd.
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 Seoul Opto Device Co., Ltd. filed Critical Seoul Opto Device Co., Ltd.
Publication of WO2013162297A1 publication Critical patent/WO2013162297A1/fr

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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
    • C02F1/30—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
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • 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
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • 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
    • C02F2201/326—Lamp control systems
    • 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]
    • C02F2209/006—Processes using a programmable logic controller [PLC] comprising a software program or a logic diagram

Definitions

  • the present invention relates to a sterilization system, and more particularly, to a sterilization system capable of determining whether processed water is sterilized or not using a light emitting diode.
  • the chlorination is a method of performing sterilization using a sterilization effect of chlorine after preprocessing such as precipitation, filtering, or the like.
  • THM trihalomethane
  • the ozone processing method is a method of performing sterilization using a sterilization effect of ozone.
  • the ultraviolet light radiation method is a method of radiating ultraviolet light using an ultraviolet light lamp having an electrode in which mercury gas is generally charged.
  • the electrode is blackened to reduce a radiation amount of the ultraviolet light, decreasing removal efficiency and reducing a lifespan to about 5,000 hours.
  • an indirect estimation method of determining whether microorganisms or floating matters remain in sterilized water through a concentration of remaining chlorine or a sterilization time since the method is not a direct method, it is difficult to determine whether the processed water is actually sterilized.
  • a sterilization system which is appropriate for a small-scale sterilization, including a sterilization unit configured to sterilize water, a sterilization detection unit configured to detect presence of microorganisms in the sterilized water, and a filtering unit configured to remove the remaining microorganisms in the sterilized water passing through the sterilization detection unit.
  • the foregoing and/or other aspects of the present invention may be achieved by providing a sterilization system using a light emitting diode.
  • the sterilization system includes a sterilization unit configured to sterilize water; a sterilization detection unit configured to detect presence of microorganisms in the sterilized water; and a determination control unit configured to selectively control dispense of the sterilized water according to the presence of microorganisms.
  • the sterilization unit may include at least one light emitting diode for sterilization configured to emit light having a first wavelength to sterilize the microorganisms, and the first wavelength may include a range of 200 nm to 300 nm.
  • the sterilization detection unit may detect a change in intensity of light according to the presence of the microorganisms, and may include at least one light emitting diode for detection configured to emit light having a second wavelength absorbed by the microorganisms and a light receiving unit configured to detect the intensity of light emitted from the light emitting diode for detection and the intensity of light passing through the sterilized water, and the second wavelength may include a range of 500 nm to 600 nm.
  • the determination control unit may reroute the sterilized water to the sterilization unit or dispense the sterilized water according to the change in the intensity of light.
  • the determination control unit may reroute the sterilized water to the sterilization unit when the change in the intensity of light is equal to of more than a preset value, and dispenses the sterilized water when the change in the intensity of light is less than the preset value.
  • a filtering unit configured to filter the microorganisms in the sterilized water passing through the sterilization detection unit may be further provided, and the filtering unit may include a separatpr having porosity corresponding to a size of the microorganisms.
  • the sterilization detection unit configured to detect a change in intensity of light corresponding to the presence of microorganisms in water is provided to determine whether the microorganisms remain in the water, it is possible to directly determine whether the water is sterilized. In addition, it is possible to simply and easily determine whether the water is sterilized using the light emitting diode configured to emit light of a wavelength range that can detect cell walls or cell membranes of the microorganisms.
  • the introduced water is sterilized and the remaining microorganisms can be removed again until an amount of microorganisms remaining in the water satisfies a reference value by checking whether the sterilized water is sufficiently sterilized, more efficient and safe sterilization becomes possible.
  • secondary contamination due to by products can be prevented by complexly using a sterilization method of radiating ultraviolet light and a filtering method of using a separator.
  • the processes can be integrally performed by one system to be appropriate for a small-scale sterilization.
  • FIG. 1 is a schematic view showing a configuration of a sterilization system according to an embodiment of the present invention
  • FIG. 2 is a flowchart showing a processing step of a determination control unit according to the embodiment of the present invention.
  • FIG. 3 is a schematic view showing a configuration of a sterilization system according to another embodiment of the present invention.
  • FIG. 1 is a schematic view showing a configuration of a sterilization system according to an embodiment of the present invention.
  • the water is introduced into a sterilization detection unit 10.
  • the water may be water which is previously sterilized.
  • the sterilization detection unit 10 may be connected to a reservoir (not shown) in which the sterilized water is stored.
  • the sterilization detection unit 10 includes an inlet port (not shown) having a tubular shape, and the inlet port can be inserted into an opening formed in one surface of the reservoir.
  • the sterilization detection unit 10 includes a fixing unit and can be fixed to the one surface of the reservoir.
  • the present invention is not limited thereto but the sterilization detection unit 10 may be connected to any space as long as the sterilized water is stored and in any method.
  • the sterilization detection unit 10 detects a change in intensity of light corresponding to the presense of microorganisms in the introduced water.
  • the sterilization detection unit 10 may include at least one light emitting diode 12 for detection configured to radiate light to the introduced water.
  • the sterilization detection unit 10 includes at lease one light receiving unit 14 configured to detect intensity of light emitted from the light emitting diode 12 for detection and intensity of light passed through the water.
  • a disposition interval of the light emitting diode 12 for detection and the light receiving unit 14 may be variously adjusted according to a turbidity of the water.
  • the sterilization detection unit 10 may further include a display unit (not shown) configured to visually display whether the microorganisms remain.
  • the light emitting diode 12 for detection has advantages such as environment friendliness, a long lifespan, low power consumption, high efficiency emission, and so on. At least one light emitting diode 12 for detection may be provided. The number of light emitting diodes may be variously varied according to a generation place of the water, a usage of the sterilized water, or the like. The light emitting diode 12 may be disposed not to come in contact with the water. In addition, when a plurality of light emitting diodes 12 is disposed, the plurality of light emitting diodes 12 may be disposed in an assembly type to be integrally mounted or separated. The light emitting diode 12 for detection can emit light having a wavelength absorbed by the microorganisms present in the water.
  • the light may have a wavelength that does not break the cell walls or the cell membranes of the microorganisms.
  • the wavelength may be 500 nm to 600 nm.
  • the wavelength is not limited thereto but may be varied according to the generation place of the water and the type of the microorganisms to check whether specific microorganisms are present.
  • the light emitting diode 12 for detection may be connected to a power supply unit (not shown) to emit light.
  • the microorganisms present in the water absorb the light having the wavelength, and thus, the intensity of light penetrating through the water is reduced.
  • Reduction or change in the intensity of light i.e., the difference between the intensity of light emitted from the light emitting diode 12 for detection and the intensity of light passed through the water in the sterilization detection unit 10, is proportional to the amount of the microorganisms present in the water.
  • the change in the intensity of light can be detected to check whether the microorganisms remain in the water.
  • the light receiving unit 14 can receive the intensity of light emitted from the light emitting diode 12 for detection and the intensity of light passed through the water. Then, the light receiving unit 14 may calculate the change in the intensity of light convert the data of the change in intensity of light into an electrical signal, and transmit the electrical signal to a determination control unit 20.
  • the step for calculating the change in the intensity of light can be performed in the determination control unit 20.
  • the light receiving unit 14 just transmit the electrical signal converted from the intensity of light emitted from the light emitting diode 12 for detection and the intensity of light passed through the water in the sterilization detection unit 10.
  • the sterilization detection unit 10 may be connected to a dispense value 16 configured to dispense the water, which is checked for the presence of the microorganisms, to the outside, and a conveyance valve 18 configured to convey the checked water to a sterilization unit 30. Accordingly, the water is dispensed to the outside through the dispense value 16 or dispensed to the sterilization unit 30 through the conveyance valve 18 according to the presence of the microorganisms remaining in the water, and thus, additional sterilization can be performed. Description of the sterilization unit 30 will be shown later.
  • Opening and closing of the dispense value 16 and the conveyance valve 18 may be determined according to a control signal generated from the determination control unit 20.
  • the determination control unit 20 selectively controls the dispense of the water according to the presence of the microorganisms in the water.
  • the determination control unit 20 is connected to the light receiving unit 14 to receive the electrical signal of the data of the change in the intensity of light output from the light receiving unit 14, compares the change in the intensity of light with a preset value, determines whether the microorganisms remain in the water through the comparison result, converts it into a control signal, and outputs the control signal.
  • the preset value of the determination control unit 20 may be a difference between the intensity of light emitted from the light emitting diode 12 for detection and an intensity of light passed through water in which the microorganisms remain rarely. Accordingly, when the change in the intensity of light is equal to or more than the preset value, the determination control unit 20 determines that the microorganisms remain. In this case, the determination control unit 20 can dispense the water to the sterilization unit 30. On the other hand, when the change in the intensity of light is less than the present value, the determination control unit 20 determines that there is substantially no microorganism. In this case, the determination control unit 20 can dispense the water to the outside. That is, the presence of microorganisms is determined according to the comparison between the change of the intensity of light and the preset value.
  • the preset value may be variously varied according to a purpose of the sterilized water to be used.
  • FIG. 2 is a flowchart showing a pressing step of the determination control unit according to the embodiment of the present invention.
  • the determination control unit 20 may have the preset value.
  • the determination control unit 20 receives an electrical signal of the data of the change in the intensity of light output from the light receiving unit 14 (S1). Next, the change in the intensity of light is compared with the preset value (S2). According to the comparison result, the determination control unit 20 can generate a control signal.
  • the determination control unit 20 can generate a control signal to open the dispense value 16 connected to the sterilization detection unit 10 (S3).
  • the dispense value 16 is opened according to the control signal, and the water can be dispensed to the outside.
  • the determination control unit 20 can generate a control signal to reroute the water to the sterilization unit 30 (S4).
  • the conveyance valve 18 is opened according to the control signal, and the water can be rerouted to the sterilization unit 30.
  • the sterilization unit 30 sterilizes the water.
  • the sterilization unit 30 may include at least one light emitting diode 32 for sterilization.
  • the light emitting diode 32 for sterilization can emit light having a wavelength that can sterilize the microorganisms.
  • the wavelength may be 200 nm to 300 nm.
  • a reflection plate (not shown) may be installed at the sterilization unit 30.
  • the reflection plate may be formed at the entire inner wall surface of the sterilization unit 30 to reflect the light emitted from the light emitting diode 32.
  • the reflection plate is not limited thereto but may be selectively formed at a portion of the surface from which ultraviolet light can be concentrically reflected.
  • the light emitted from the light emitting diode 32 for sterilization can be absorbed or reflected to improve the sterilization effect without passing the light to the outside.
  • Foreign substances such as the microorganisms or the like may be stuck to the reflection plate during continuous sterilization.
  • a cleaning unit (not shown) may be further provided to remove the reduction in light reflectivity.
  • the cleaning unit may be a cleaning apparatus configured to move leftward and rightward along a water channel of the sterilization unit 30 to remove the foreign substances stuck to the reflection plate.
  • an unloading unit (not shown) may be further provided to unload the removed foreign substances.
  • the unloading unit may be an underwater pump.
  • the sterilization unit 30 may be disposed in front or rear of the sterilization detection unit 10. That is, the water introduced from the reservoir or the like is sterilized through the sterilization unit 30, and then, the sterilization performance, i.e., the presence of microorganisms can be checked through the sterilization detection unit 10. In addition, the water can be dispensed to the sterilization unit 30, after being checked for the presence of microorganismsby the sterilization detection unit 10, to remove the remaining microorganisms.
  • a power supply of the sterilization unit 30 may be turned on or off according to whether the water is introduced. That is, when the water is introduced into the sterilization unit 30 through the conveyance valve 18, the sterilization unit 30 detects a flow rate of the water to allow the power supply to be turned on.
  • At least one flow rate detection unit 34 may be installed in the sterilization unit 30.
  • the flow rate detection unit 34 may be a flow rate detection sensor. Accordingly, when the flow rate detection sensor detects the flow rate of the water to convert the flow rate into an electrical signal and output the electrical signal, the determination control unit 20 receives the electrical signal to generate a control signal so that the power supply of the sterilization unit 30 can be turned on.
  • the microorganisms remaining in the water can be checked and removed through the sterilization detection unit 10, the determination control unit 20, and the sterilization unit 30.
  • FIG. 3 is a schematic view showing a configuration of a sterilization system according to another embodiment of the present invention.
  • the introduced water may be water that is not sterilized.
  • the sterilization unit 100 may be connected to a flow rate adjustment bath in which the water is temporarily stored.
  • the flow rate adjustment bath can absorb and uniformize variations in flow rate and water quality of the introduced water to further increase processing efficiency of the sterilization system.
  • the present invention is not limited thereto but the sterilization unit 100 may be connected to any space as long as the water, which is not sterilized, is stored.
  • the sterilization unit 100 may include at least one light emitting diode 102 for sterilization.
  • a power supply of the sterilization unit 100 may be turned on/off according to the introduction of the water.
  • a flow rate detection unit 104 may be installed in the sterilization unit 100. Since the sterilization unit 100 is the same as the sterilization unit 30 of FIG. 1, detailed description thereof will be omitted.
  • a sterilization detection unit 120 connected to the sterilization unit 100 may include at least one light emitting diode 122 for detection and configured to radiate light to the water sterilized in the sterilization unit 100, and at least one light receiving unit 124 configured to detect intensity of light emitted from the light emitting diode 122 for detection and intensity of light passed through the water.
  • Light receiving unit 124 converts the change in the intensity of light into an electrical signal, and output the electrical signal. Since the sterilization detection unit 120 is the same as the sterilization detection unit 10 described with reference to FIGS. 1 and 2, detailed description thereof will be omitted.
  • the sterilization detection unit 120 may be connected to a dispense value 126 configured to dispense the water checked for the presence of microorganisms, and a conveyance valve 128 configured to reroute the water to a filtering unit 160 (to be described later). Accordingly, the water may be dispensed to the outside through the dispense value 126 or rerouted to the filtering unit 160 through the conveyance valve 128 for further filtering according to the presence of the microorganisms remaining in the water. Description of the filtering unit 160 will be described below.
  • Opening/closing of the dispense value 126 and the conveyance valve 128 may be determined according to a control signal generated from a determination control unit 140.
  • the determination control unit 140 can generate the control signal according to an output signal of the light receiving unit 124.
  • the determination control unit 140 may have a preset value.
  • the determination control unit 140 can receive the electrical signal output from the light receiving unit 124, compare the electrical signal with the preset value, and generate a control signal according to the comparison result.
  • the determination control unit 140 can generate a control signal to open the dispense value 126 connected to the sterilization detection unit 120.
  • the dispense value 126 is opened according to the control signal, and the water can be dispensed to the outside.
  • the determination control unit 140 can generate a control signal configured to open conveyance valve 128 to reroute the water to the filtering unit 160. The water can be rerouted to the filtering unit 160 according to the control signal.
  • the filtering unit 160 filters the microorganisms remaining in the water passed through the sterilization detection unit 120.
  • the filtering unit 160 may include a separator (not shown) for example, a separating film or a separating membrane having porosity corresponding to the size of the microorganisms remaining in the sterilized water.
  • a pore size of the separator may be 1 ⁇ m to 5 ⁇ m.
  • the separator may have an appropriate pore size according to circumstances.
  • a plurality of modules, each having the separator installed in the filtering unit 160 may be stacked to increase a filtering capacity of the water.
  • a cleaning agent may be supplied and circulated for a certain time to recover the performance of the separator.
  • the separator may be a micro-filtration membrane (MF), an ultra-filtration membrane (UF), or a nano-filtration membrane (NF).
  • the filtering unit 160 may include an adsorption unit configured to remove the remaining microorganisms through adsorption.
  • the adsorption unit may be granular activated carbon, which has a large specific surface area and fine porosity and can efficiently remove the remaining microorganisms through adsorption.
  • the filtering unit 160 may be disposed between the sterilization detection unit 120 and the sterilization unit 100. Accordingly, when the microorganisms remain in the water passed through the sterilization detection unit 120 detecting the presense of microorganisms, the water is conveyed to the filtering unit 160, and the water passed through the filtering unit 160 can be conveyed again to the sterilization unit 100.
  • the power supply of the sterilization unit 100 may be turned on/off according to whether the water is introduced.
  • the sterilization unit 100, the sterilization detection unit 120, and the filtering unit 160 may be installed in a single body.
  • the body may have a cylindrical shape with a space formed therein and may have an inlet unit into which the water is introduced and a dispense unit through which the water is dispensed, which are formed at both ends of the body.
  • a plurality of partition plates may be formed in the body to partition the sterilization unit 100, the sterilization detection unit 120, and the filtering unit 160.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physical Water Treatments (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention concerne un système de stérilisation utilisant une diode électroluminescente. Le système de stérilisation comprend une unité de stérilisation conçue pour stériliser de l'eau et une unité de détection de stérilisation conçue pour détecter la présence de microorganismes dans l'eau stérilisée. De plus, une unité de filtration conçue pour filtrer les microorganismes dans l'eau ayant traversé l'unité de détection de stérilisation est aussi présente afin de pouvoir enlever de nouveau les microorganismes restants jusqu'à ce que la quantité de microorganismes restant dans l'eau respecte une valeur de référence. Ainsi, une stérilisation plus efficace et plus sûre devient possible, et tous les processus peuvent être effectués intégralement dans un seul système qui peut convenir à une stérilisation à petite échelle.
PCT/KR2013/003556 2012-04-27 2013-04-25 Système de stérilisation utilisant une diode électroluminescente WO2013162297A1 (fr)

Applications Claiming Priority (2)

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KR10-2012-0044503 2012-04-27
KR1020120044503A KR102027300B1 (ko) 2012-04-27 2012-04-27 발광 다이오드를 이용한 살균 시스템

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WO2013162297A1 true WO2013162297A1 (fr) 2013-10-31

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Cited By (2)

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WO2015133968A1 (fr) * 2014-03-07 2015-09-11 Watersprint Ab Système, dispositif et procédé pour améliorer la qualité de l'eau
WO2019050920A1 (fr) * 2017-09-05 2019-03-14 Redhorse Constructors, Inc. Méthodes et systèmes de traitement des eaux usées

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KR20200034232A (ko) * 2018-09-21 2020-03-31 서울바이오시스 주식회사 살균 모듈 및 이를 포함하는 살균 장치

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KR101063800B1 (ko) * 2011-06-03 2011-09-08 코오롱워터텍 주식회사 정수 처리 시스템

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Publication number Priority date Publication date Assignee Title
US20040045886A1 (en) * 2002-09-11 2004-03-11 Kabushiki Kaisha Toshiba UV-assisted advanced-ozonation water treatment system and advanced-ozonation module
US20050139530A1 (en) * 2003-08-21 2005-06-30 Christopher Heiss Water purifier and method of making and using the same
US20050218082A1 (en) * 2004-03-10 2005-10-06 Trojan Technologies Inc. System for predicting reduction in concentration of a target material in a flow of fluid
US20080030730A1 (en) * 2006-08-03 2008-02-07 The United States Of America As Represented By The United States Environmental Protection Agency Water contamination measurement apparatus
US20090060798A1 (en) * 2007-08-29 2009-03-05 Hal Williams Automated Endoscope Reprocessor Germicide Concentration Monitoring System and Method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015133968A1 (fr) * 2014-03-07 2015-09-11 Watersprint Ab Système, dispositif et procédé pour améliorer la qualité de l'eau
WO2019050920A1 (fr) * 2017-09-05 2019-03-14 Redhorse Constructors, Inc. Méthodes et systèmes de traitement des eaux usées
US11878925B2 (en) 2017-09-05 2024-01-23 Redhorse Constructors, Inc. Methods and systems for treating wastewater

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KR102027300B1 (ko) 2019-10-01

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