WO2017171406A1 - Purificateur d'eau et procédé de régulation de vitesse de récupération de purificateur d'eau - Google Patents

Purificateur d'eau et procédé de régulation de vitesse de récupération de purificateur d'eau Download PDF

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Publication number
WO2017171406A1
WO2017171406A1 PCT/KR2017/003434 KR2017003434W WO2017171406A1 WO 2017171406 A1 WO2017171406 A1 WO 2017171406A1 KR 2017003434 W KR2017003434 W KR 2017003434W WO 2017171406 A1 WO2017171406 A1 WO 2017171406A1
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WO
WIPO (PCT)
Prior art keywords
water
control valve
tds
concentrated water
pressure
Prior art date
Application number
PCT/KR2017/003434
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English (en)
Korean (ko)
Inventor
문형민
윤성한
Original Assignee
코웨이 주식회사
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 코웨이 주식회사 filed Critical 코웨이 주식회사
Priority to CN201780021090.4A priority Critical patent/CN108883352A/zh
Publication of WO2017171406A1 publication Critical patent/WO2017171406A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/08—Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/147—Bypass or safety valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/147—Bypass or safety valves
    • B01D35/1475—Pressure relief valves or pressure control valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/157—Flow control valves: Damping or calibrated passages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/157—Flow control valves: Damping or calibrated passages
    • B01D35/1573—Flow control valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/04—Controlling the filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/04—Controlling the filtration
    • B01D37/046—Controlling the filtration by pressure measuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/10—Accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/12—Controlling or regulating
    • 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
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • 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
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • 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
    • C02F2209/03—Pressure
    • 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
    • C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
    • 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
    • C02F2209/40—Liquid flow rate

Definitions

  • the present invention relates to a water purifier and a method for adjusting the recovery rate of the water purifier.
  • the water purifier uses a reverse osmosis filter to remove harmful components such as impurities contained in water.
  • Such a reverse osmosis filter is capable of removing even fine impurities such as impurities contained in water, environmental hormones, heavy metals, bacteria, etc. using a micro film, and discharges these harmful components to the outside through the concentrated water flow path.
  • the ratio of the purified water to the water provided by the filter is called a recovery rate.
  • the recovery rate is not used as a purified water but is related to the amount of concentrated water discharged to the outside and the ion removal performance of the reverse osmosis filter. It is very important to.
  • the conventional water purifier always discharges the concentrated water at a constant recovery rate irrespective of the TDS of the water flowing into the filter, and there is a problem that the ion removal performance is remarkably deteriorated when a region having a high TDS or a contaminated water flows in.
  • the present invention is to solve the above-mentioned problems of the prior art, and provides a water purifier and a method for adjusting the recovery rate by adjusting the concentrated water flow control valve based on the TDS and pressure of the incoming water.
  • the filter unit for generating purified water by filtering the incoming water
  • TDS measuring unit for measuring the TDS (Total Dissolved Solids) of the water flowing into the filter unit, the pressure of the water flowing into the filter unit
  • a pressure measuring unit for measuring, a purified water flow path through which the purified water is discharged, a concentrated water flow path through which the concentrated water filtered by the filter unit is discharged, and a concentrated water flow rate control valve controlling a flow rate of the concentrated water discharged through the concentrated water flow path
  • a control unit for controlling the opening and closing degree of the concentrated water flow control valve based on the TDS and the pressure of the water flowing into the filter unit.
  • control unit increases the opening degree of the brine flow control valve as the TDS of the water flowing into the filter unit increases, but when the pressure of the water decreases below a predetermined value, the brine flow control valve Can reduce the degree of opening.
  • control unit may reduce the opening degree of the concentrated water flow control valve until the pressure of the water reaches the predetermined value.
  • control unit may reduce the opening degree of the concentrated water flow control valve as the TDS of the incoming water decreases.
  • the filter unit may include a reverse osmosis membrane filter.
  • a water purifier may include: a filter unit for filtering purified water to generate purified water; a TDS measuring unit for measuring TDS (Total Dissolved Solids) of the water flowing into the filter unit; A concentrated water flow path through which the concentrated water filtered by the filter unit is discharged, a pressure measuring unit measuring a pressure of the concentrated water, a concentrated water flow control valve controlling a flow rate of the concentrated water discharged through the concentrated water flow path; It includes a control unit for controlling the opening and closing degree of the concentrated water flow control valve based on the TDS of the water flowing into the filter unit and the pressure of the concentrated water.
  • TDS Total Dissolved Solids
  • a method for adjusting a recovery rate includes a filter unit for filtering purified water to generate purified water, a purified water passage through which the purified water is discharged, and a concentrated water passage through which the filtered water filtered by the filter unit is discharged and the concentrated water is discharged.
  • a method for controlling the recovery rate of a water purifier including a brine flow rate control valve for controlling the flow rate of the brine discharged through the water flow path, the step of blocking the purified water flow path, opening the brine flow path to a predetermined opening degree, And measuring the TDS and the pressure of the water flowing into the filter unit and adjusting the opening and closing degree of the concentrated water flow control valve based on the measured TDS and the pressure of the water.
  • adjusting the opening and closing degree of the brine flow control valve based on the measured TDS and pressure of the water increases the opening degree of the brine flow control valve as the TDS of the water flowing into the filter unit increases When the pressure of the water decreases below a predetermined value, the opening degree of the concentrated water flow control valve may be reduced.
  • adjusting the opening and closing degree of the brine flow control valve based on the measured TDS and pressure of the water may reduce the opening degree of the brine flow control valve as the TDS of the incoming water decreases.
  • the TDS of the incoming water when the TDS of the incoming water is low, there is an effect of reducing the waste water by adjusting the opening and closing degree of the concentrated water flow control valve to increase the recovery rate.
  • FIG. 1 is a view for explaining a water purifier according to an embodiment of the present invention.
  • FIG. 2 is a graph showing the ion removal rate according to the recovery rate of the water purifier.
  • 3 is a graph showing the pressure change of water according to the change in recovery rate of the water purifier.
  • FIG. 4 is a view for explaining a water purifier according to another embodiment of the present invention.
  • FIG. 5 is a flowchart illustrating a recovery rate adjusting method according to an embodiment of the present invention.
  • FIG. 6 is a flowchart for explaining an embodiment of adjusting the opening and closing degree of the brine flow control valve based on the measured water TDS and the pressure of FIG. 5.
  • FIG. 1 is a view for explaining a water purifier according to an embodiment of the present invention
  • Figure 2 is a graph showing the ion removal rate according to the change in recovery rate of the water purifier
  • Figure 3 is a graph showing the pressure change of the water according to the change in recovery rate of the water purifier to be.
  • the water purifier 100 is a filter unit 110, TDS measuring unit 120, pressure measuring unit 130, concentrated water flow control valve 140, control unit ( 150).
  • the filter unit 110 may filter the incoming water to generate purified water.
  • the filter unit 110 may be formed by the first flow path 1 through which water flows into the filter unit 110, the purified water flow path 2 through which the purified water generated by the filter unit 110 is discharged, and the filter unit 110.
  • the filtered concentrated water may be connected to the concentrated water passage 3 through which the concentrated water is discharged.
  • the concentrated water refers to water including the solid material filtered by the filter unit 110 and may be discharged to the outside through the concentrated water flow path (3).
  • the filter unit 110 may be a reverse osmosis membrane filter.
  • the water flowing into the filter unit 110 may be raw water introduced from the outside or water passed through a pretreatment filter (eg, at least one of a sediment filter and a precarbon filter).
  • a post-processing filter eg, a post carbon filter
  • the integer may be provided to the user through the post-processing filter or as it is.
  • the TDS measuring unit 120 may measure the TDS of the water flowing into the filter unit 110 through the first flow path 1.
  • the TDS measurement unit 120 may output the measured TDS to the control unit 150.
  • the pressure measuring unit 130 may measure the pressure of water introduced into the filter unit 110 through the first flow path 1.
  • the pressure measuring unit 130 may output the measured pressure to the control unit 150.
  • the pressure measuring unit 130 may be any well-known pressure sensor as long as it can measure the change in the pressure of the water flowing into the filter unit 110.
  • the brine flow rate control valve 140 may control the flow rate of the brine discharged through the brine flow path 3 by the control of the controller 150.
  • the brine flow rate control valve 140 in accordance with a control signal input from a valve (not shown) and the control unit 150 is installed to control the flow rate of the brine discharged through the brine flow path (3) It may include a motor (not shown) for adjusting the opening and closing degree of the valve.
  • the controller 150 may control the overall operation of the water purifier 100.
  • the controller 150 may include at least one processing unit and a memory.
  • the processing unit may include, for example, a central processing unit (CPU), a graphics processing unit (GPU), a microprocessor, an application specific integrated circuit (ASIC), field programmable gate arrays (FPGA), and the like. It may have a plurality of cores.
  • the memory may be volatile memory, nonvolatile memory, or a combination thereof.
  • the controller 150 may adjust the recovery rate by adjusting the opening and closing degree of the concentrated water flow control valve 140.
  • the recovery rate means a ratio of the flow rate of the purified water discharged to the purified water flow path 2 with respect to the flow rate of the water flowing into the filter unit 110.
  • the controller 150 may first adjust the opening and closing degree of the brine flow rate control valve 140 according to the TDS of the water flowing into the filter unit 110.
  • control unit 150 may increase the opening degree of the brine flow rate control valve 140 as the TDS of the water flowing into the filter unit 110 increases, on the contrary, the brine flow rate control as the TDS of the water decreases.
  • the opening degree of the valve 140 can be reduced.
  • the controller 150 may reduce the recovery rate by increasing the opening degree of the concentrated water flow control valve 140 to increase the ion removal rate, and the filter unit 110. If the TDS of the water flowing into the low), the recovery rate can be increased by reducing the opening degree of the concentrated water flow control valve 140 to reduce the waste of the waste water (concentrated water discharged to the outside).
  • the ion removal rate is rather reduced at some point below the recovery rate. This is because when the recovery rate is reduced more than necessary due to the differential pressure loss of the first flow path 1 and thus the pump performance curve, the ion removal rate is reduced because the operating pressure on the first flow path 1 is lowered.
  • the controller 150 increases the TDS of the water flowing into the filter unit 110 to increase the opening degree of the concentrated water flow control valve 140, but the pressure of the water decreases below a predetermined value. In this case, it is reported that the differential pressure loss occurs, it is possible to reduce the opening degree of the concentrated water flow control valve 140.
  • the controller 150 may increase the ion removal rate by decreasing the recovery rate by increasing the opening degree of the concentrated water flow control valve 140.
  • the controller 150 senses the pressure of the water flowing into the filter unit 110 and when the pressure of the water is less than the predetermined pressure, the concentrated water flow control valve 140 so that the pressure of the water is more than the predetermined pressure You can readjust the degree of opening.
  • FIG. 4 is a view for explaining a water purifier according to another embodiment of the present invention.
  • the water purifier 200 is a filter unit 210, TDS measuring unit 220, pressure measuring unit 230, concentrated water flow control valve 240 and the control unit 250.
  • a pressure measuring unit 230 for detecting a differential pressure loss is disposed in front of the brine flow rate control valve 240 in the brine flow path 3. There is a difference in that.
  • FIG. 5 is a flowchart illustrating a recovery rate adjusting method according to an embodiment of the present invention
  • Figure 6 is a step of adjusting the opening and closing degree of the concentrated water flow control valve based on the measured TDS and pressure of the water of FIG. A flowchart for explaining an embodiment.
  • the controller 150 blocks the purified water flow passage 2 and controls the concentrated water flow control valve 140 to open the concentrated water flow passage 3 to a predetermined opening degree (S100).
  • the TDS and the pressure of the water flowing into the filter unit 110 are measured using the TDS measuring unit 120 and the pressure measuring unit 130 (S200).
  • control unit 150 may adjust the recovery rate by adjusting the opening and closing degree of the concentrated water flow control valve 140 based on the measured TDS and pressure of the water (S300).
  • the step (S300) of adjusting the opening and closing of the concentrated water flow control valve based on the measured TDS and pressure of the water referring to Figure 6, first, the control unit 150 is the TDS measurement unit 120 When the TDS of the water measured through) is increased (S310), the opening degree of the concentrated water flow control valve 140 may be increased (S320). Here, when the pressure of the water decreases below the predetermined pressure (S340), the controller 150 may reduce the opening degree of the concentrated water flow control valve 140 until the predetermined pressure reaches the predetermined pressure (S350).
  • the controller 150 may reduce the opening degree of the brine flow control valve 140 according to the degree of the TDS of the water reduced (S330).

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nanotechnology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

Selon un mode de réalisation, la présente invention concerne un purificateur d'eau comprenant : une unité de filtration pour produire de l'eau purifiée par filtration d'eau entrante ; une unité de mesure de TDS pour mesurer les solides dissous totaux (TDS) dans l'eau s'écoulant dans l'unité de filtration ; une unité de mesure de pression pour mesurer la pression de l'eau s'écoulant dans l'unité de filtration ; un passage d'eau purifiée dans lequel l'eau purifiée est rejetée ; un passage d'eau concentrée dans lequel l'eau concentrée filtrée par l'unité de filtration est rejetée ; une vanne de commande d'écoulement d'eau concentrée pour commander le débit de l'eau concentrée rejetée dans le passage d'eau concentrée ; une unité de commande pour ajuster le degré d'ouverture et de fermeture de la vanne de commande de débit d'eau concentrée, sur la base des TDS et de la pression de l'eau s'écoulant dans l'unité de filtration.
PCT/KR2017/003434 2016-03-29 2017-03-29 Purificateur d'eau et procédé de régulation de vitesse de récupération de purificateur d'eau WO2017171406A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780021090.4A CN108883352A (zh) 2016-03-29 2017-03-29 净水器以及用于调节净水器的回收率的方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2016-0037356 2016-03-29
KR1020160037356A KR102490252B1 (ko) 2016-03-29 2016-03-29 정수기 및 정수기의 회수율 조절 방법

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WO2017171406A1 true WO2017171406A1 (fr) 2017-10-05

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KR (1) KR102490252B1 (fr)
CN (1) CN108883352A (fr)
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US11235990B2 (en) 2017-10-17 2022-02-01 Mar Cor Purification, Inc. Portable multimode reverse osmosis water purification system
US11589423B2 (en) 2017-10-17 2023-02-21 Evoqua Water Technologies Llc Universal heating power management system
US11642447B2 (en) 2017-10-17 2023-05-09 Evoqua Water Technologies Llc Reverse osmosis water system with heat forward function

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JP7109505B2 (ja) * 2020-07-13 2022-07-29 オルガノ株式会社 超純水製造装置

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US11235990B2 (en) 2017-10-17 2022-02-01 Mar Cor Purification, Inc. Portable multimode reverse osmosis water purification system
US11589423B2 (en) 2017-10-17 2023-02-21 Evoqua Water Technologies Llc Universal heating power management system
US11642447B2 (en) 2017-10-17 2023-05-09 Evoqua Water Technologies Llc Reverse osmosis water system with heat forward function
US11845677B2 (en) 2017-10-17 2023-12-19 Evoqua Water Technologies Llc Portable multimode reverse osmosis water purification system

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