WO2013058127A1 - Procédé de désalinisation d'eau de mer, et dispositif afférent - Google Patents

Procédé de désalinisation d'eau de mer, et dispositif afférent Download PDF

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WO2013058127A1
WO2013058127A1 PCT/JP2012/075902 JP2012075902W WO2013058127A1 WO 2013058127 A1 WO2013058127 A1 WO 2013058127A1 JP 2012075902 W JP2012075902 W JP 2012075902W WO 2013058127 A1 WO2013058127 A1 WO 2013058127A1
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Prior art keywords
water
reverse osmosis
osmosis membrane
seawater
membrane device
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PCT/JP2012/075902
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English (en)
Japanese (ja)
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三浦　雅彦
島田　光重
紘史 丸野
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株式会社神鋼環境ソリューション
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Publication of WO2013058127A1 publication Critical patent/WO2013058127A1/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
    • B01D61/58—Multistep processes
    • 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
    • B01D61/026—Reverse osmosis; Hyperfiltration comprising multiple reverse osmosis steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/04—Specific process operations in the feed stream; Feed pretreatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2315/00—Details relating to the membrane module operation
    • B01D2315/06—Submerged-type; Immersion type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2317/00—Membrane module arrangements within a plant or an apparatus
    • B01D2317/02—Elements in series
    • B01D2317/022—Reject series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2317/00—Membrane module arrangements within a plant or an apparatus
    • B01D2317/04—Elements in parallel
    • 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
    • B01D61/14—Ultrafiltration; Microfiltration
    • 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
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/16—Regeneration of sorbents, filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/20—Prevention of biofouling
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1268—Membrane bioreactor systems
    • C02F3/1273—Submerged membrane bioreactors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • the present invention relates to a seawater desalination method and a seawater desalination apparatus, for example, a seawater desalination method and a seawater desalination apparatus that desalinate seawater by filtration using a reverse osmosis membrane device having a reverse osmosis membrane (RO membrane).
  • a seawater desalination method and a seawater desalination apparatus desalinate seawater by filtration using a reverse osmosis membrane device having a reverse osmosis membrane (RO membrane).
  • RO membrane reverse osmosis membrane
  • seawater desalination methods and seawater desalination apparatuses that obtain fresh water as purified water from seawater by filtration using a reverse osmosis membrane device have been proposed (for example, patents). Reference 1).
  • biological treated water obtained by biological treatment of waste water containing organic matter (hereinafter also referred to as “organic waste water”) is filtered by the first reverse osmosis membrane device to be the first concentrated water and purified water.
  • 1 permeated water is obtained, mixed with seawater using the first concentrated water as dilution water to obtain mixed water, and the mixed water is filtered with a second reverse osmosis membrane device to obtain purified permeated water (fresh water).
  • a seawater desalination method and a seawater desalination apparatus for obtaining water are proposed (for example, Patent Document 2).
  • the mixed water obtained by mixing the first concentrated water with seawater as dilution water also has a salt concentration from seawater. Is low. Therefore, the energy required to pump the mixed water to the reverse osmosis membrane device to obtain a predetermined amount of fresh water as purified water is smaller than the energy required to pump seawater to the reverse osmosis membrane device. Therefore, according to such a seawater desalination method and seawater desalination apparatus, there is an advantage that energy necessary for pumping per unit amount of purified water to be obtained can be suppressed.
  • the first permeated water obtained from the first reverse osmosis membrane device is purified by filtering the biologically treated water with the first reverse osmosis membrane device.
  • the first permeated water obtained from the first reverse osmosis membrane device is purified by filtering the biologically treated water with the first reverse osmosis membrane device.
  • the biologically treated water contains organisms (bacteria, protozoa, metazoans, etc.), residual organic matter remaining without being decomposed by the organisms, and secretions secreted by the organisms. Therefore, in the seawater desalination method and seawater desalination apparatus of Patent Document 2, the organism, the residual organic matter, and the secretion are also referred to as an RO membrane (hereinafter, “first RO membrane”) of the first reverse osmosis membrane device. ) And deposit. Then, clogging of the first RO membrane (also referred to as “fouling”, in particular, “fouling” derived from organisms is also referred to as “biofouling”) may occur.
  • first RO membrane also referred to as “fouling”
  • biofouling clogging of the first RO membrane
  • the biologically treated water is usually temporarily stored in the biologically treated water storage tank while being transferred from the biological treatment tank to the first reverse osmosis membrane device. Then, when the biologically treated water is stored in the biologically treated water storage tank, microorganisms are mixed into the biologically treated water through air or the like. As a result, biofouling may also occur due to this microorganism. In some cases, the organism attached to the RO membrane secretes and proliferates secretions to form biofouling. Biofouling may progress as a result of organisms attached to the first RO membrane secreting secretions and continuing to grow. Biofouling is a factor that increases the resistance of water (flow path resistance) when passing through the membrane surface of the first RO membrane.
  • an object of the present invention is to provide a seawater desalination method and a seawater desalination apparatus that can suppress biofouling while obtaining purified water using biologically treated water and seawater.
  • the present invention provides biologically treated water obtained by biologically treating organic wastewater by a first reverse osmosis membrane device to obtain first permeated water and first concentrated water as purified water, Mixing with seawater as dilution water to obtain mixed water, filtering the mixed water with a second reverse osmosis membrane device to obtain second permeated water and second concentrated water as purified water; And a second step of supplying the first reverse osmosis membrane device to wash the reverse osmosis membrane of the first reverse osmosis membrane device.
  • the first reverse osmosis membrane device includes a supply port for supplying biologically treated water, and in the second step, seawater is supplied to the first reverse osmosis membrane device. And discharging from the supply port side cleans the reverse osmosis membrane of the first reverse osmosis membrane device.
  • seawater is supplied to the first reverse osmosis membrane device and filtered by the first reverse osmosis membrane device to perform third permeation as purified water.
  • the reverse osmosis membrane of the first reverse osmosis membrane device is washed.
  • the present invention also provides a first reverse osmosis membrane device for obtaining a first permeated water and a first concentrated water as purified water by filtering biological treated water obtained by biological treatment of organic waste water, and the first concentrated water.
  • a mixing unit for mixing water with seawater as dilution water to obtain mixed water
  • a second reverse osmosis membrane device for filtering the mixed water to obtain second permeated water and second concentrated water as purified water
  • the first reverse osmosis membrane device has a reverse osmosis membrane, and is configured to supply seawater to the first reverse osmosis membrane device to wash the reverse osmosis membrane of the first reverse osmosis membrane device. It exists in the seawater desalination apparatus characterized by this.
  • a seawater desalination apparatus 10 includes a biological treatment tank 11 that biologically treats organic wastewater B to obtain biologically treated water, a microfiltration membrane (MF membrane), and ultrafiltration.
  • MF membrane microfiltration membrane
  • a first turbidity device 12 having at least one of a membrane (UF membrane) and turbidizing biologically treated water by filtration to obtain a first turbidized treated water, and a first for pressurizing the first turbidized treated water
  • a first reverse osmosis membrane device 14a that obtains first permeated water and first concentrated water as purified water C by filtering the pressurized first turbidity-treated water as biologically treated water
  • a second turbidity device 15 having at least one of a filtration membrane (MF membrane) and an ultrafiltration membrane (UF membrane) and turbidizing seawater A by filtration to obtain a second turbidized treated water
  • a mixing unit 16 for mixing the second turbidity-treated water and the first concentrated water to obtain mixed water, and a second for pressurizing the mixed water It comprises a pressure part 13b, and a second reverse osmosis unit 14b for filtration pressurized mixed water.
  • the organic waste water B is biologically treated in the biological treatment tank 11, the biologically treated water is turbidized in the first turbidity removal device 12, and the first turbidity treated water is The 1st permeation
  • seawater A is filtered by the second turbidizer 15
  • the second turbidity-treated water as the seawater A and the first concentrated water are mixed by the mixing unit 16 to obtain mixed water
  • the seawater desalination apparatus 10 of 1st Embodiment is provided with the 3rd pressurization part 13c which pressurizes 2nd turbidity-treated water. Moreover, the seawater desalination apparatus 10 of 1st Embodiment is comprised so that the pressurized 2nd turbidity-treated water may be filtered as the seawater A with the 1st reverse osmosis membrane apparatus 14a.
  • the seawater A is water containing salt, for example, water having a salt concentration of 1.0% by mass or more and 8.0% by mass or less. More specifically, the salt concentration is, for example, 2.5% by mass or more. It is 6.0 mass% or less.
  • the seawater A is not limited to the water which exists in the sea, If it is water whose salt concentration is 1.0 mass% or more, the water of a lake (salt lake, brackish lake), swamp water, pond water, etc. Including water existing on the land.
  • the organic waste water B is waste water containing organic matter, for example, waste water having a BOD (biochemical oxygen demand) as an indicator of organic matter concentration of 2000 mg / L or less, more specifically 100 to 2000 mg. / L wastewater.
  • the organic waste water B is water having a lower salt concentration than seawater.
  • the organic wastewater B has, for example, a ratio of the salt concentration of the organic wastewater B to the salt concentration of the seawater A of 0.1 or less, more specifically, the salt concentration of the organic wastewater B with respect to the salt concentration of the seawater A. The ratio is 0.01 or less.
  • Examples of the organic waste water B include sewage (domestic waste water, rain water flowing into the sewer, etc.), industrial waste water (waste water discharged from factories such as food factories, chemical factories, electronics industry factories, and pulp factories). It is done.
  • the biological treatment is a treatment for decomposing organic substances contained in water by biological species such as bacteria, protozoa and metazoans.
  • biological species such as bacteria, protozoa and metazoans.
  • Examples of the biological treatment include aeration treatment using activated sludge.
  • turbidity means removing coarse impurities (for example, a solid substance etc.) rather than separating with a reverse osmosis membrane device before filtering with a reverse osmosis membrane device. It means that the filtration is coarser than the membrane filtration or the sedimentation is performed.
  • the first turbidity removal device 12 includes a filtration membrane having at least one of an MF membrane and a UF membrane.
  • the filtration membrane is installed as an immersion membrane under the liquid surface of the biological treatment tank 11.
  • Examples of the pressurizing units 13a, 13b, and 13c include pumps.
  • the reverse osmosis membrane devices 14a and 14b include an RO membrane and a pressure vessel that accommodates the RO membrane.
  • the RO membrane in this specification is a concept including a nanofiltration membrane (NF membrane).
  • the first reverse osmosis membrane device 14a is configured to supply a supply port to which first turbidity-treated water as biologically treated water is supplied, a permeate discharge port from which first permeate is discharged, and first concentrated water to be discharged. And a concentrated water outlet.
  • the second turbidizer 15 includes a filtration membrane having at least one of an MF membrane and a UF membrane, and a pressure vessel that accommodates the filtration membrane.
  • the seawater desalination apparatus 10 of the first embodiment biologically treats the organic wastewater B in the biological treatment tank 11 to obtain biologically treated water, and the biologically treated water is removed from the first turbidity apparatus.
  • the first turbidity-treated water is obtained by turbidity at 12, the first turbidity-treated water is pressurized by the first pressurizing unit 13a, and the pressurized first turbidity-treated water is supplied from the supply port to the first reverse osmosis membrane.
  • the first reverse osmosis membrane device 14a is supplied to the device 14a and the first turbidity-treated water is treated as biologically treated water to obtain the first permeated water and the first concentrated water as the purified water C.
  • the turbidity is removed by the turbidizer 15 to obtain the second turbidity-treated water, and the second turbidity-treated water as the seawater A and the first concentrated water are mixed in the mixing unit 16 to obtain the mixed water.
  • the seawater desalination apparatus 10 of 1st Embodiment transfers the organic wastewater B to the biological treatment tank 11 at the time of implementation of the said 1st process, and a 1st turbidity treated water is 1st reverse osmosis membrane from a supply port.
  • the first permeated water is discharged from the permeated water outlet to the outside of the first reverse osmosis membrane device 14a and transferred as purified water C to a purified water storage tank (not shown), and the first concentrated water is transferred to the device 14a.
  • the concentrated water discharge port From the concentrated water discharge port, it is discharged out of the first reverse osmosis membrane device 14a and transferred to the mixing unit 16, seawater A is transferred to the second turbidity removal device 15, and the second turbidity-treated water is transferred to the mixing unit 16.
  • the mixed water is transferred to the second reverse osmosis membrane device 14b, and the second permeated water as fresh water is discharged out of the second reverse osmosis membrane device 14b and transferred as purified water E to a purified water storage tank (not shown).
  • the second concentrated water D is discharged out of the second reverse osmosis membrane device 14b and transferred to a concentrated water storage tank (not shown). It is configured to be.
  • the seawater desalination apparatus 10 of 1st Embodiment pressurizes 2nd turbidity-treated water with the 3rd pressurization part 13c, and concentrates the pressurized 2nd turbidity-treated water.
  • the 3rd permeated water and the 3rd concentrated water D which are supplied to the 1st reverse osmosis membrane apparatus 14a from a water discharge port, and filter-process with the 1st reverse osmosis membrane apparatus 14a by making this 2nd turbidity-treated water into seawater A.
  • the second step of cleaning the reverse osmosis membrane of the first reverse osmosis membrane device 14a can be performed.
  • the seawater desalination apparatus 10 of 1st Embodiment transfers the 2nd turbidity-treated water as seawater A to the 1st reverse osmosis membrane apparatus 14a from the concentrated water discharge port at the time of implementation of the said 2nd process.
  • the third permeated water is discharged out of the first reverse osmosis membrane device 14a from the permeated water discharge port and transferred to the purified water storage tank (not shown) as purified water C, and the third concentrated water D is supplied from the supply port to the first. 1 It is comprised so that it may be discharged
  • the seawater desalination apparatus 10 of 1st Embodiment is provided with the some path
  • the seawater desalination apparatus 10 of 1st Embodiment is provided with the valve interposed by each transfer path.
  • the seawater desalination apparatus 10 of the first embodiment includes a first valve 18a and a second valve 18b interposed in the first transfer path 17a and the second transfer path 17b, respectively, as the valves. I have.
  • the seawater desalination apparatus 10 of 1st Embodiment is provided with the valve mechanism which determines a flow path by opening / closing operation of each valve.
  • the first turbidity-treated water is supplied to the first reverse osmosis membrane apparatus 14a, the first valve 18a is opened by the valve mechanism, and the first The first valve is configured so that the two valve 18b is closed.
  • the supply of the first turbidity-treated water to the first reverse osmosis membrane apparatus 14a is stopped, and the first valve 18a is closed by the valve mechanism.
  • the second valve 18b is opened, and the second turbidity-treated water is supplied to the first reverse osmosis membrane device 14a so that the second step is performed.
  • the seawater desalination apparatus 10 according to the first embodiment is configured as described above, so that the first process and the second process can be performed alternately.
  • the organic waste water B is a biological treatment tank. 11, a storage tank (not shown) for storing the first turbidity-treated water is provided so that the biologically treated water obtained can be turbidized by the first turbidity removal device 12.
  • the seawater desalination apparatus 10 of 1st Embodiment is 1st reverse osmosis membrane apparatus in the said 1st process, and the 1st turbidity-treated water stored by this storage tank (not shown) is 1st as needed. It is comprised so that it may be supplied to 14a.
  • the seawater desalination apparatus 10 of 1st Embodiment does not provide this storage tank, but obtains the 1st turbidity-treated water from the biologically treated water by the 1st turbidity-eliminator 12 in the 2nd process, It may be configured to discharge the treated water out of the system.
  • the seawater desalination method of 1st Embodiment is a method of implementing the said 1st process and said 2nd process using the seawater desalination apparatus of 1st Embodiment.
  • FIG. 4 is a schematic view of a seawater desalination apparatus according to the second embodiment.
  • the seawater desalination apparatus 10 of the second embodiment includes a biological treatment tank 11 that biologically treats organic wastewater B to obtain biologically treated water, a microfiltration membrane (MF membrane), and ultrafiltration.
  • MF membrane microfiltration membrane
  • a first turbidity device 12 having at least one of a membrane (UF membrane) and turbidizing biologically treated water by filtration to obtain a first turbidized treated water, and a first for pressurizing the first turbidized treated water
  • a first reverse osmosis membrane device 14a that obtains first permeated water and first concentrated water as purified water C by filtering the pressurized first turbidity-treated water as biologically treated water
  • a second turbidity device 15 having at least one of a filtration membrane (MF membrane) and an ultrafiltration membrane (UF membrane) and turbidizing seawater A by filtration to obtain a second turbidized treated water
  • a mixing unit 16 for mixing the second turbidity-treated water and the first concentrated water to obtain mixed water, and a second for pressurizing the mixed water It comprises a pressure part 13b, and a second reverse osmosis unit 14b for filtration pressurized mixed water.
  • the organic waste water B is biologically treated in the biological treatment tank 11, the biologically treated water is turbidized in the first turbidity removing device 12, and the first turbidity treated water is The 1st permeation
  • seawater A is filtered by the second turbidizer 15
  • the second turbidity-treated water as the seawater A and the first concentrated water are mixed by the mixing unit 16 to obtain mixed water
  • seawater desalination apparatus 10 of 2nd Embodiment mixed water is pressurized by the 2nd pressurization part 13b, and the filtered water is filtered by the 1st reverse osmosis membrane apparatus 14a as seawater A. It is configured as follows.
  • the seawater desalination apparatus 10 of the second embodiment performs biological treatment of the organic waste water B in the biological treatment tank 11 to obtain biologically treated water, and the biologically treated water is removed from the first turbidizer.
  • the first turbidity-treated water is obtained by turbidity at 12, the first turbidity-treated water is pressurized by the first pressurizing unit 13a, and the pressurized first turbidity-treated water is supplied from the supply port to the first reverse osmosis membrane.
  • the first reverse osmosis membrane device 14a is supplied to the device 14a and the first turbidity-treated water is treated as biologically treated water to obtain the first permeated water and the first concentrated water as the purified water C.
  • the turbidity is removed by the turbidizer 15 to obtain the second turbidity-treated water, and the second turbidity-treated water as the seawater A and the first concentrated water are mixed in the mixing unit 16 to obtain the mixed water.
  • the organic waste water B is transferred to the biological treatment tank 11, and the first turbidity-treated water is supplied from the supply port to the first reverse osmosis membrane.
  • the first permeated water is discharged from the permeated water outlet to the outside of the first reverse osmosis membrane device 14a and transferred as purified water C to a purified water storage tank (not shown), and the first concentrated water is transferred to the device 14a. From the concentrated water discharge port, it is discharged out of the first reverse osmosis membrane device 14a and transferred to the mixing unit 16, seawater A is transferred to the second turbidity removal device 15, and the second turbidity-treated water is transferred to the mixing unit 16.
  • the mixed water is transferred to the second reverse osmosis membrane device 14b, and the second permeated water as fresh water is discharged out of the second reverse osmosis membrane device 14b and transferred as purified water E to a purified water storage tank (not shown).
  • the second concentrated water D is discharged out of the second reverse osmosis membrane device 14b and transferred to a concentrated water storage tank (not shown). It is configured to be.
  • the seawater desalination apparatus 10 of 2nd Embodiment pressurizes mixed water with the 2nd pressurization part 13b, and is 1st reverse osmosis from the concentrated water discharge port to the pressurized mixed water.
  • the mixed water is supplied to the membrane device 14a and the mixed water is treated as seawater A by the first reverse osmosis membrane device 14a to obtain the third permeated water and the third concentrated water D as fresh water, and the reverse osmosis of the first reverse osmosis membrane device 14a. It is comprised so that the 2nd process of wash
  • the seawater desalination apparatus 10 of 2nd Embodiment transfers the mixed water as seawater A to the 1st reverse osmosis membrane apparatus 14a from the concentrated water discharge port at the time of implementation of the said 2nd process, and is the 3rd permeation
  • Water is discharged out of the first reverse osmosis membrane device 14a from the permeate discharge port and transferred as purified water C to a purified water storage tank (not shown), and the third concentrated water D is supplied from the supply port to the first reverse osmosis membrane. It is configured to be discharged out of the device 14a and transferred to a concentrated water storage tank (not shown).
  • the seawater desalination apparatus 10 of 2nd Embodiment is provided with the some path
  • the seawater desalination apparatus 10 of 2nd Embodiment is provided with the valve interposed by each transfer path.
  • the seawater desalination apparatus 10 according to the second embodiment includes, as the valves, first and second valves 18a and 18b interposed in the first transfer path 17a and the second transfer path 17b, respectively. I have.
  • the seawater desalination apparatus 10 of 2nd Embodiment is provided with the valve mechanism which determines a flow path by opening / closing operation of each valve. Further, the seawater desalination apparatus 10 of the second embodiment supplies the first turbidity-treated water to the first reverse osmosis membrane apparatus 14a, the first valve 18a is opened by the valve mechanism, and the first The first valve is configured so that the two valve 18b is closed. Further, the seawater desalination apparatus 10 of the second embodiment stops the supply of the first turbidity-treated water to the first reverse osmosis membrane apparatus 14a, and the first valve 18a is closed by the valve mechanism. In addition, the second step is performed by opening the second valve 18b.
  • the seawater desalination apparatus 10 of 2nd Embodiment can implement the said 1st process and the said 2nd process alternately by being comprised in this way. Moreover, even if the seawater desalination apparatus 10 of 2nd Embodiment stops the supply of the 1st turbidity-treated water to the 1st reverse osmosis membrane apparatus 14a as needed, the organic waste water B is a biological treatment tank. 11, a storage tank (not shown) for storing the first turbidity-treated water is provided so that the biologically treated water obtained can be turbidized by the first turbidity removal device 12.
  • the seawater desalination apparatus 10 of 2nd Embodiment is 1st reverse osmosis membrane apparatus in the said 1st process, and the 1st turbidity-treated water stored by this storage tank (not shown) is used as needed. It is comprised so that it may be supplied to 14a.
  • the seawater desalination apparatus 10 of 2nd Embodiment does not provide this storage tank, but obtains the 1st turbidity-treated water from the biologically treated water by the 1st turbidity-eliminator 12 in the 2nd process, and the 1st turbidity removal. It may be configured to discharge the treated water out of the system.
  • the salt concentration of the mixed water obtained in the mixing unit 16 preferably exceeds 0.2M (0.2 mol / L) when non-halophilic organisms are contained in the biologically treated water.
  • the salt concentration is more preferably more than 0.5M.
  • the salt concentration that sufficiently suppresses the growth of non-halophilic organisms is 0.2M, and the salt concentration that sufficiently suppresses the growth of non-halophilic organisms and low-halogenated organisms is 0.5M. is there.
  • the salt concentration of the mixed water is preferably 0.8M or less, and more preferably 0.6M or less.
  • supply water the volume ratio of seawater in water supplied to one reverse osmosis membrane device
  • the salt concentration (supply water) Salt concentration) the amount of energy required in order to desalinate seawater per quantity of the freshwater which is the purified water obtained can be suppressed.
  • the seawater mixing ratio is small.
  • Highly halophilic organisms are those with optimal growth NaCl concentrations above 2.5M.
  • the moderately halophilic organisms include bacteria that have an optimal growth NaCl concentration of more than 0.5M and not more than 2.5M, and are separated from various salt-containing samples.
  • the low-degree halophilic organism has an optimal growth NaCl concentration of more than 0.2M and 0.5M or less, and examples include marine higher organisms and bacteria.
  • Non-halophilic organisms have an optimal growth NaCl concentration of more than 0 M and not more than 0.2 M, and many higher organisms and soil bacteria are applicable.
  • the salt concentration of the supply water is 0.12M.
  • the salt concentration of the supply water is 0.24M.
  • the salt concentration of the supply water is 0.36M.
  • the salt concentration of the supply water is 0.50M.
  • the seawater mixing ratio is 100%, that is, when the supply water is only seawater (seawater 100%), the salt concentration of the supply water is 0.60M.
  • the growth of the organism is sufficiently suppressed outside the range of the optimal growth NaCl concentration, and particularly when the concentration is higher than the optimal growth NaCl concentration, the growth is effectively suppressed and the organism may be killed. For this reason, as shown in FIG. 7, when the seawater mixing ratio of the feed water is 30% or less, the salt concentration of the feed water is 0.2 M or less, so that non-halophilic organisms can grow. . In addition, when the seawater mixing ratio of the feed water is more than 30% and 80% or less, the salt concentration of the feed water is more than 0.2M and less than 0.5M, so that low-halophilic organisms can grow. is there.
  • the ratio of the seawater is increased so that the salt concentration of the feed water exceeds 0.5M, the growth of non-halophilic organisms and low-degree halophilic organisms is sufficiently suppressed.
  • the biologically treated water contains a relatively large amount of non-halophilic organisms and low-degree halophilic organisms. Therefore, after the biologically treated water is filtered by one reverse osmosis membrane device, the salt concentration is 0 after the non-halophilic organism and the low halophilic organism adhere to the RO membrane of the one reverse osmosis membrane device.
  • the seawater desalination method of 2nd Embodiment is a method of implementing the said 1st process and said 2nd process using the seawater desalination apparatus of 2nd Embodiment.
  • FIG. 8 is a schematic view of a seawater desalination apparatus according to the third embodiment.
  • the seawater desalination apparatus 10 according to the third embodiment includes a biological treatment tank 11, a first turbidity removal device 12, and a first pressurization unit 13 a that pressurizes the first turbidity treatment water.
  • the 1st reverse osmosis membrane apparatus 14a, the 2nd turbidity removal apparatus 15, the mixing part 16, the 2nd pressurization part 13b, and the 2nd reverse osmosis membrane apparatus 14b are provided.
  • the organic waste water B is biologically processed by the biological treatment tank 11, the biologically treated water is turbidized by the 1st turbidity apparatus 12, and the 1st turbidity treated water is The 1st permeation
  • seawater A is filtered by the second turbidity removal device 15
  • the second turbidity-treated water as the seawater A and the first concentrated water are mixed by the mixing unit 16 to obtain the first mixed water
  • the first mixed water is pressurized by the second pressurizing unit 13b, and the pressurized first mixed water is configured to be filtered by the second reverse osmosis membrane device 14b.
  • the organic waste water B is biologically treated in the biological treatment tank 11, the biologically treated water is turbidized in the first turbidity removing device 12, and the first turbidity treated water is
  • the first turbidity-treated water pressurized by the first pressurizing unit 13a is filtered by the second reverse osmosis membrane device 14b as biologically treated water, and the second permeated water and the second concentrated water that are the purified water E Water is obtained
  • seawater A is filtered by the second turbidity removal device 15
  • the second turbidity-treated water as the seawater A and the second concentrated water are mixed in the mixing unit 16 to obtain the second mixed water
  • the second mixed water is pressurized by the second pressure unit 13b, and the pressurized second mixed water is filtered by the first reverse osmosis membrane device 14a.
  • the first reverse osmosis membrane device 14a includes a first supply port to which first turbidity-treated water as biologically treated water is supplied, a first permeate discharge port from which first permeate is discharged, and a first concentration. And a first concentrated water outlet from which water is discharged.
  • the second reverse osmosis membrane device 14b includes a second supply port to which a first turbidity-treated water as biologically treated water is supplied, a second permeate discharge port from which a second permeate is discharged, and a second concentration. And a second concentrated water discharge port through which water is discharged.
  • the seawater desalination apparatus 10 of the third embodiment performs biological treatment on the organic waste water B in the biological treatment tank 11 to obtain biological treated water, and the biological treated water is removed from the first turbidity removing apparatus. 12, the first turbidity-treated water is obtained, the first turbidity-treated water is pressurized by the first pressurizing unit 13a, and the pressurized first turbidity-treated water is used as the biologically treated water in the first supply port.
  • the first reverse osmosis membrane device 14a is supplied to the first reverse osmosis membrane device 14a and the first turbidity-treated water is filtered through the first reverse osmosis membrane device 14a to obtain the first permeated water and the first concentrated water as the purified water C.
  • the second turbidity-treated water as the seawater A and the first concentrated water are mixed in the mixing unit 16 to obtain the first mixed water
  • the first mixed water is pressurized by the second pressurizing unit 13b, and the pressurized first mixed water is supplied from the second concentrated water discharge port to the second reverse osmosis membrane device 14b to supply the first mixed water to the first pressurized water.
  • it is configured so as to be able to implement the reverse osmosis unit 14b by filtration to first step of obtaining a third permeate and a third concentrate D serving fresh.
  • the seawater desalination apparatus 10 of 3rd Embodiment transfers the organic waste water B to the biological treatment tank 11 at the time of implementation of the said 1st process, and a 1st supply port becomes 1st turbidity treated water as biologically treated water.
  • the first permeated water is discharged from the first permeated water outlet to the outside of the first reverse osmosis membrane device 14a, and is supplied as purified water C to a purified water storage tank (not shown).
  • the first concentrated water is discharged from the first concentrated water discharge port to the outside of the first reverse osmosis membrane device 14a and transferred to the mixing unit 16, and the seawater A is transferred to the second turbidizer 15 as seawater A.
  • the second turbidity-treated water is transferred to the mixing unit 16, the first mixed water is transferred from the second concentrated water discharge port to the second reverse osmosis membrane device 14b, and the third permeated water, which is fresh water, is discharged from the second permeated water. It is discharged out of the second reverse osmosis membrane device 14b from the outlet and transferred as purified water E to a purified water storage tank (not shown).
  • third concentrated water D is configured to be transferred to the concentrated water reservoir is discharged from the second supply port outside the second reverse osmosis unit 14b (not shown).
  • the seawater desalination apparatus 10 of 3rd Embodiment biologically treats the organic wastewater B by the biological treatment tank 11, obtains biologically treated water, and removes biologically treated water from the first turbidity removing apparatus. 12, the first turbidity-treated water is obtained, the first turbidity-treated water is pressurized by the first pressurizing unit 13a, and the pressurized first turbidity-treated water is used as the biologically treated water at the second supply port.
  • the second reverse osmosis membrane device 14b is supplied to the second reverse osmosis membrane device 14b, and the first turbidity-treated water is filtered through the second reverse osmosis membrane device 14b to obtain second permeated water and second concentrated water as purified water E, and seawater A Is turbidized with the second turbidizer 15 to obtain the second turbidized treated water, the second turbidized treated water as the seawater A and the second concentrated water are mixed in the mixing unit 16 to obtain the second mixed water,
  • the second mixed water is pressurized by the second pressurizing unit 13b, and the pressurized second mixed water is supplied from the first concentrated water discharge port to the first reverse osmosis membrane device 14a to supply the second mixed water to the first And it is configured so as to be able to implement the reverse osmosis unit 14a by filtration to second step of obtaining a fourth permeate and fourth concentrated water D serving fresh.
  • the seawater desalination apparatus 10 of 3rd Embodiment transfers the organic waste water B to the biological treatment tank 11 at the time of implementation of the said 2nd process, and the 1st turbidity treated water is the 2nd supply port as biologically treated water.
  • the second permeated water is discharged from the second permeated water discharge port to the outside of the second reverse osmosis membrane device 14b, and is supplied as purified water E to a purified water storage tank (not shown).
  • the second concentrated water is discharged from the second concentrated water discharge port to the outside of the second reverse osmosis membrane device 14b and transferred to the mixing unit 16, and the seawater A is transferred to the second turbidity removing device 15 for the second removal.
  • Turbid treated water is transferred to the mixing unit 16 as seawater A
  • the second mixed water is transferred from the first concentrated water discharge port to the first reverse osmosis membrane device 14a
  • the fourth permeated water as fresh water is the first permeated water discharge port.
  • purified water C Is fourth concentrated water D Discharged from the first reverse osmosis membrane device 14a to the purified water storage tank (not shown) as purified water C Is fourth concentrated water D is configured to be transferred to the concentrated water reservoir is discharged from the first supply port to the outside first reverse osmosis unit 14a (not shown).
  • the seawater desalination apparatus 10 of 3rd Embodiment is provided with the some path
  • route for example, the 1st transfer path 17a which transfers 1st turbidity-treated water to the 1st reverse osmosis membrane apparatus 14a, and 1st A second transfer path 17b for transferring the mixed water to the second reverse osmosis membrane device 14b, a third transfer path 17c for transferring the first turbidity-treated water
  • the seawater desalination apparatus 10 of 3rd Embodiment is provided with the valve interposed by each transfer path.
  • the seawater desalination apparatus 10 according to the third embodiment uses the first transfer path 17a, the second transfer path 17b, the third transfer path 17c, and the fourth transfer path 17d as the valves.
  • a first valve 18a, a second valve 18b, a third valve 18c, and a fourth valve 18d are provided.
  • the seawater desalination apparatus 10 of 3rd Embodiment is provided with the valve mechanism which determines a flow path by opening / closing operation of each valve. Further, in the seawater desalination apparatus 10 of the third embodiment, the first and second valves 18a and 18b are opened and the third and fourth valves 18c and 18d are closed by the valve mechanism. Thus, the first step is performed. Furthermore, in the seawater desalination apparatus 10 of the third embodiment, the first and second valves 18a and 18b are closed and the third and fourth valves 18c and 18d are opened by the valve mechanism. Thus, the second step is performed. Thus, since the seawater desalination apparatus 10 of 3rd Embodiment is comprised so that each valve may be opened and closed by the said valve mechanism, it implements the said 1st process and the said 2nd process alternately. Can do.
  • the seawater desalination method of 3rd Embodiment is a method of implementing the said 1st process and said 2nd process alternately using the seawater desalination apparatus of 3rd Embodiment.
  • seawater desalination apparatus and the seawater desalination method of the first, second, and third embodiments are configured as described above, they have the following advantages.
  • the biologically treated water obtained by biologically treating organic wastewater is filtered by the first reverse osmosis membrane device 14a to obtain purified water C.
  • 1 permeated water and first concentrated water are obtained, mixed with seawater using the first concentrated water as dilution water to obtain mixed water, and the mixed water is filtered through the second reverse osmosis membrane device 14b to obtain purified water E.
  • organisms and the like contained in the biologically treated water may adhere to the first RO membrane of the first reverse osmosis membrane device 14a.
  • the seawater desalination method by supplying seawater A to the first reverse osmosis membrane device 14a after the first step and washing the reverse osmosis membrane of the first reverse osmosis membrane device 14a, The organism attached to the first RO membrane becomes difficult to grow due to salt in seawater. Thereby, there is an advantage that biofouling of the first RO membrane can be suppressed.
  • permeated water as purified water can be obtained by filtering seawater and biologically treated water with a reverse osmosis membrane device. That is, according to the seawater desalination method, biofouling can be suppressed while obtaining purified water using biologically treated water and seawater.
  • the first reverse osmosis membrane device 14a includes a supply port for supplying biologically treated water, and in the second step, seawater A Is supplied to the first reverse osmosis membrane device 14a and discharged from the supply port side, thereby cleaning the reverse osmosis membrane of the first reverse osmosis membrane device 14a.
  • the direction of the seawater flow is opposite to the direction of the concentrated water obtained from the biologically treated water in the portion on the supply port side of the first RO membrane where organisms are likely to adhere.
  • seawater A is supplied to the first reverse osmosis membrane device 14a and filtered by the first reverse osmosis membrane device 14a.
  • the reverse osmosis membrane of the said 1st reverse osmosis membrane apparatus 14a is wash
  • the third concentrated water D is obtained by filtering the seawater A with the first reverse osmosis membrane device in the second step.
  • the 3rd concentrated water D whose salt concentration is higher than seawater can contact the 1st RO membrane to which the organism adhered. Therefore, there is an advantage that biofouling of the first RO membrane can be further suppressed.
  • purified water can be obtained in the second step.
  • the third concentrated water D is discharged from the supply port side that supplies biologically treated water in the second step, the first RO membrane supply port side that organisms are likely to adhere to.
  • the 3rd concentrated water D whose salt concentration is higher than seawater may contact
  • the seawater desalination apparatus 10 of 1st, 2nd, 3rd embodiment filters the biological treatment water obtained by carrying out the biological treatment of the organic wastewater, the 1st permeated water and 1st concentration which are the purified water C
  • a first reverse osmosis membrane device 14a that obtains water
  • a mixing unit 16 that obtains mixed water by mixing the first concentrated water with seawater as dilution water
  • a second permeate that is purified water E by filtering the mixed water.
  • the first reverse osmosis membrane device 14a has a reverse osmosis membrane.
  • Such a seawater desalination apparatus 10 is configured to supply seawater A to the first reverse osmosis membrane device 14a to wash the reverse osmosis membrane of the first reverse osmosis membrane device 14a. According to the seawater desalination apparatus 10, biofouling can be suppressed while obtaining purified water using biologically treated water and seawater.
  • seawater desalination method and seawater desalination apparatus of 1st, 2nd, 3rd embodiment have the said structure
  • the seawater desalination method and seawater desalination apparatus of this invention are the said structures.
  • the design is not limited and can be changed as appropriate.
  • the seawater desalination apparatus supplies the pressurized second turbidity-treated water or mixed water to the reverse osmosis membrane apparatus from the concentrated water discharge port, and performs the second removal.
  • the turbid treated water or the mixed water is filtered as seawater A by a reverse osmosis membrane device to obtain permeated water and concentrated water as fresh water, and the concentrated water is discharged from the supply port to the outside of the reverse osmosis membrane device.
  • the seawater desalination apparatus of the present invention supplies the pressurized second turbidity-treated water or mixed water to the reverse osmosis membrane device from the supply port to reversely reverse the second turbidity-treated water or the mixed water.
  • the seawater desalination apparatus of the present invention supplies the pressurized second turbidity-treated water from the supply port to the first reverse osmosis membrane device 14a and supplies the second turbidity-treated water.
  • the seawater A is filtered through the first reverse osmosis membrane device 14a to obtain fresh permeate and concentrated water D, and the concentrated water D is discharged from the concentrated water outlet to the outside of the first reverse osmosis membrane device 14a. May be.
  • the seawater desalination apparatus of 1st, 2nd embodiment is comprised so that it may filter-process with the 1st reverse osmosis membrane apparatus 14a by making 2nd turbidity-treated water or mixed water into seawater A at a 2nd process.
  • the seawater desalination apparatus of the present invention supplies the second turbidity-treated water or mixed water to the first reverse osmosis membrane device 14a, and the second turbidity-treated water or the mixed water is supplied to the first reverse osmosis water.
  • the filter membrane of the first turbidity removal apparatus 12 may be of a type installed outside the tank as shown in FIG.
  • the first turbidity removal device 12 may include a storage container that stores the filtration membrane.
  • the first turbidizer 12 includes the filtration membrane.
  • the turbidity device 12 may include at least one of a sand filtration unit having a sand filter and a sedimentation separation tank that precipitates and separates water to be treated instead of the filtration membrane.
  • the first turbidity removal device 12 may include the filtration membrane, and may further include at least one of the sand filtration unit and the precipitation separation tank.
  • the first turbidity removal device 12 further includes a precipitation separation tank and biological treatment water in the precipitation separation tank, when the sand filtration unit is provided. It is preferable that a supernatant is obtained by precipitation separation in step (b), and the supernatant is filtered through the sand filtration unit.
  • the second turbidation apparatus 15 includes the filtration membrane.
  • the turbidity device 15 may include at least one of a sand filtration unit having a sand filter and a precipitation separation tank that precipitates and separates the water to be treated, instead of the filtration membrane.
  • the second turbidity removal device 15 may include the filtration membrane, and may further include at least one of the sand filtration unit and the precipitation separation tank.
  • SYMBOLS 10 Seawater desalination apparatus
  • 11 Biological treatment tank
  • 12 1st turbidity removal apparatus
  • 13a 1st pressurization part
  • 13b 2nd pressurization part
  • 14 Reverse osmosis membrane apparatus
  • 14a 1st reverse osmosis Membrane device
  • 14b second reverse osmosis membrane device
  • 15 second turbidity removal device
  • 16 mixing unit

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  • 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)
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Abstract

Le procédé de désalinisation d'eau de mer ci-décrit est caractérisé en ce qu'il comprend : une première étape consistant à obtenir une première eau concentrée et une première eau de perméat, qui est une eau clarifiée, par filtration d'une eau biologiquement traitée au moyen d'un dispositif à membrane d'osmose inverse, à obtenir une eau mixte par mélange d'eau de mer agissant comme de l'eau de dilution dans la première eau concentrée, et à obtenir une seconde eau concentrée et une seconde eau de perméat, qui est l'eau clarifiée, par filtration de l'eau mixte au moyen d'un second dispositif à membrane d'osmose inverse ; et une seconde étape consistant à nettoyer la membrane d'osmose inverse du premier dispositif à membrane d'osmose inverse par introduction d'eau de mer dans le premier dispositif à membrane d'osmose inverse.
PCT/JP2012/075902 2011-10-18 2012-10-05 Procédé de désalinisation d'eau de mer, et dispositif afférent WO2013058127A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014192619A1 (fr) * 2013-05-27 2014-12-04 東レ株式会社 Procédé opératoire pour dispositif de traitement de l'eau
ES2708126A1 (es) * 2017-10-06 2019-04-08 Moro Maria Teresa Bergaz Metodo para el tratamiento de agua salobre o de mar mediante osmosis inversa

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7120095B2 (ja) * 2019-03-18 2022-08-17 栗田工業株式会社 水処理システム

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Publication number Priority date Publication date Assignee Title
JPH03249986A (ja) * 1990-02-26 1991-11-07 Ube Ind Ltd 浄水用カートリッジの洗浄方法
JP2010149100A (ja) * 2008-11-28 2010-07-08 Kobelco Eco-Solutions Co Ltd 海水淡水化方法および海水淡水化装置
WO2011077815A1 (fr) * 2009-12-25 2011-06-30 東レ株式会社 Système de production d'eau et son procédé de fonctionnement

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Publication number Priority date Publication date Assignee Title
JPH03249986A (ja) * 1990-02-26 1991-11-07 Ube Ind Ltd 浄水用カートリッジの洗浄方法
JP2010149100A (ja) * 2008-11-28 2010-07-08 Kobelco Eco-Solutions Co Ltd 海水淡水化方法および海水淡水化装置
WO2011077815A1 (fr) * 2009-12-25 2011-06-30 東レ株式会社 Système de production d'eau et son procédé de fonctionnement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014192619A1 (fr) * 2013-05-27 2014-12-04 東レ株式会社 Procédé opératoire pour dispositif de traitement de l'eau
JPWO2014192619A1 (ja) * 2013-05-27 2017-02-23 東レ株式会社 水処理装置の運転方法
ES2708126A1 (es) * 2017-10-06 2019-04-08 Moro Maria Teresa Bergaz Metodo para el tratamiento de agua salobre o de mar mediante osmosis inversa
WO2019068943A1 (fr) * 2017-10-06 2019-04-11 Bergaz Moro Maria Teresa Procédé pour le traitement d'eau saumâtre ou de mer par osmose inverse

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