DK201900168A1 - Procedure for purifying seawater. - Google Patents

Procedure for purifying seawater. Download PDF

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Publication number
DK201900168A1
DK201900168A1 DKPA201900168A DKPA201900168A DK201900168A1 DK 201900168 A1 DK201900168 A1 DK 201900168A1 DK PA201900168 A DKPA201900168 A DK PA201900168A DK PA201900168 A DKPA201900168 A DK PA201900168A DK 201900168 A1 DK201900168 A1 DK 201900168A1
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DK
Denmark
Prior art keywords
seawater
drinking water
tanks
ship
ballast
Prior art date
Application number
DKPA201900168A
Other languages
Danish (da)
Inventor
Serholt Tom
Højgaard Bent
Kring Højgaard Jonas
Original Assignee
Aridity Aps
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 Aridity Aps filed Critical Aridity Aps
Priority to DKPA201900168A priority Critical patent/DK201900168A1/en
Priority to PCT/DK2020/000031 priority patent/WO2020160735A2/en
Priority to EP20739849.6A priority patent/EP3921229A2/en
Publication of DK201900168A1 publication Critical patent/DK201900168A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J1/00—Arrangements of installations for producing fresh water, e.g. by evaporation and condensation of sea water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J4/00—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for
    • 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
    • B01D61/06—Energy recovery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J4/00—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for
    • B63J4/002—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for for treating ballast water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/24—Specific pressurizing or depressurizing means
    • B01D2313/246—Energy recovery means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/50—Specific extra tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/50—Specific extra tanks
    • B01D2313/502—Concentrate storage tanks
    • 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
    • C02F2103/008—Originating from marine vessels, ships and boats, e.g. bilge water or ballast water
    • 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
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • 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
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/40—Monitoring or fighting invasive species

Abstract

Ved fremstilling af drikkevand på et skib, tilføres havvand til et lagringsområde på skibet, hvor havvandet behandles ved en omvendt osmoseproces, således at der bliver tilvejebragt drikkevand. Til sikring af at det havvand der er tilbage efter behandlingen og som tilbageføres til havet, ikke indeholder uønskede invasive arter sikres det, at saliniteten efter omoseprocessen af det vand der tilbageføres havet, er så høj, at levende liv umuliggøres. Hensigtsmæssigt kan drikkevandet anbringes i et skibs ballasttanke, eller andre tanke, eller alternativt i plastsække, eller tilsvarende, som er anordnet i ballasttankene eller andre tanke.In the production of drinking water on a ship, seawater is supplied to a storage area on the ship, where the seawater is treated by a reverse osmosis process, so that drinking water is provided. To ensure that the seawater that remains after the treatment and that is returned to the sea does not contain unwanted invasive species, it is ensured that the salinity after the omosis process of the water that is returned to the sea is so high that living life is made impossible. Suitably, the drinking water may be placed in a ship's ballast tank, or other tanks, or alternatively in plastic bags, or the like, which are arranged in the ballast tanks or other tanks.

Description

DK 2019 00168 A1 Opfindelsen angår en fremgangsmåde til rensning af havvand. | forbindelse med skibe, der befinder sig på havet, krydser disse skibe ofte adskillige havområder, som har varieret dyre-og planteliv, er det uønsket, hvis nogle havområder af havet tilføres invasive arter fra andre havområder, eksempel ved udledning af ballastvand. Dette kan f.eks. forhindres, hvis der fra et skib tilbageføres havvand, der gennem en proces er blevet, adskilt i en drikkevandsdel og en saltvandsdel, med forøget salinitet hvor saltvandsdelen tilbageføres til havet.DK 2019 00168 A1 The invention relates to a method for purifying seawater. | In connection with ships located at sea, these ships often cross several sea areas, which have varied animal and plant life, it is undesirable if some sea areas of the sea are supplied with invasive species from other sea areas, for example by discharge of ballast water. This can e.g. is prevented if seawater is returned from a ship which, through a process, has been separated into a drinking water part and a salt water part, with increased salinity where the salt water part is returned to the sea.

Ved fremstilling af drikkevand ud fra havvand, er det kendt, at drikkevandet kan fremstilles ved en såkaldt omvendt osmoseproces.When producing drinking water from seawater, it is known that the drinking water can be produced by a so-called reverse osmosis process.

Eksempler på dette kan findes i DE 102005025428 Al og CN2518848, hvor der bliver anvist mulighed for at fremstille drikkevand, der kan anvendes på skibet, men også kan fordeles til områder med begrænsede drikkevandressourcer. | ingen af de to publikationer rejses problemstillingen med, at man i forbindelse med produktion af drikkevand på basis af havvand ved omvendt osmose fjerner de invasive arter i havvand, der anvendes til ballastvand.Examples of this can be found in DE 102005025428 A1 and CN2518848, where the possibility is provided of producing drinking water that can be used on the ship, but can also be distributed to areas with limited drinking water resources. | neither of the two publications raises the issue of removing the invasive species in seawater used for ballast water in connection with the production of drinking water on the basis of seawater by reverse osmosis.

Det er på denne baggrund et formål med opfindelsen at tilvejebringe en fremgangsmåde, hvor fremstilling af drikkevandet medfører, at uønskede invasive arter ikke tilføres havet, når saltvandsdelen af havvandet tilbageføres til havet, Opfindelsens formål tilgodeses ved en fremgangsmåde, som defineret i krav 1, dvs. en fremgangsmåde til rensning af havvand, herunder ballastvand fra et skibs ballasttanke, hvor havvandet ved hjælp af pumper tilføres til et omvendt osmoseanlæg, hvor havvandet behandles, således at havvandet bliver adskilt i en drikkevandsdel, der tilføres til et lagringsområde, og en saltvandsdel, og hvor den salte del af havvandet under den omvendte osmoseproces tilvejebringes en salinitet, der udelukker at invasive arter kan overleve i havvandet.It is therefore an object of the invention to provide a method in which the preparation of the drinking water means that unwanted invasive species are not added to the sea when the saline part of the seawater is returned to the sea. The object of the invention is met by a method as defined in claim 1 . a method of purifying seawater, including ballast water from a ship's ballast tank, where the seawater is pumped to a reverse osmosis plant, where the seawater is treated so that the seawater is separated into a drinking water part supplied to a storage area and a salt water part, and where the saline portion of the seawater during the reverse osmosis process provides a salinity that precludes invasive species from surviving in the seawater.

, DK 2019 00168 A1 Det er hensigtsmæssigt, som angivet i krav 2, at saliniteten øges til en promille, der umuliggør levende liv. Til opbevaring af drikkevandet er det en fordel, hvis som angivet i krav 3, at den salte del af havvandet, der tilføres osmoseanlægget, pumpes direkte fra havet eller tilføres via havvand, der tidligere er tilført ballasttankene i skibet, eller som angivet i krav 4, at drikkevandet opbevares i nogle af ballasttankene og eventuelt andre tanke, medens den saltholdige del tilbageføres til havet., DK 2019 00168 A1 It is appropriate, as stated in claim 2, that the salinity is increased to a per mille that makes living life impossible. For storage of drinking water, it is an advantage if, as stated in claim 3, the salty part of the seawater supplied to the osmosis plant is pumped directly from the sea or supplied via seawater previously supplied to the ballast tanks in the ship, or as stated in claim 4 , that the drinking water is stored in some of the ballast tanks and possibly other tanks, while the saline part is returned to the sea.

Lagringsområdet udgøres fordelagtigt, som angivet i krav 5, af en eller flere på skibet tilvejebragte ballasttanke eller eventuelt andre tanke, idet den omvendte osmosebehandling af havvandet udføres fra en central eller alternativt op til flere decentrale omvendte osmosebehandlingsenheder, fra hvilke en bruger i givet fald kan beslutte hvilke ballasttanke eller eventuelt andre tanke, der skal modtage rent drikkevandvand.The storage area is advantageously constituted, as stated in claim 5, by one or more ballast tanks provided on the ship or possibly other tanks, the reverse osmosis treatment of the seawater being carried out from a central or alternatively up to several decentralized reverse osmosis treatment units, from which a user may decide which ballast tanks or possibly other tanks are to receive clean drinking water.

En yderlige hensigtsmæssig udførelsesform af opfindelsen er angivet i krav 6, at der i mindst en af ballasttankene er anordnet plastsække, eller tilsvarende, der er indrettet til at modtage rent drikkevand.A further suitable embodiment of the invention is stated in claim 6, that plastic bags are arranged in at least one of the ballast tanks, or equivalent, which are arranged to receive clean drinking water.

Opfindelsen skal herefter nærmere forklares under henvisning til tegningen på hvilken Fig. 1 viser en 1. udførelsesform af opfindelsen Fig. 2 viser en 2. udførelsesform af opfindelsen, Fig. 3 viser en variant af udførelsesformen på fig. 3.The invention will now be explained in more detail with reference to the drawing, in which Figs. 1 shows a 1st embodiment of the invention. FIG. Fig. 2 shows a second embodiment of the invention; 3 shows a variant of the embodiment of fig. 3.

Pa figurerne betegner 1 skematisk et skib, f.eks. et oceangående. Med 2 er betegnet en indgang til modtagelse af havvand, medens 10 betegner havvand der ledes ud fra skibet, efter at havvandet har været underkastet en proces,In the figures, 1 schematically denotes a ship, e.g. an ocean-going. 2 denotes an inlet for receiving seawater, while 10 denotes seawater discharged from the ship after the seawater has been subjected to a process,

3 DK 2019 00168 A1 hvor havvandet er blevet adskilt i en drikkevandsdel, der på figurerne er betegnet 6, og en saltvandedel, der er betegnet 10.3 DK 2019 00168 A1 where the seawater has been separated into a drinking water part, which in the figures is designated 6, and a salt water part, which is designated 10.

Adskillelsen af havvandet i en drikkevandsdel og en saltvandsdel gennemføres ved filtrering i en såkaldt omvendt osmoseproces. Den omvendte osmoseprocess iværksættes ved at havvandet via en højtrykspumpe 3 fører havvandet til en membran i et osmosesystem 5. Drikkevandsdelen 6 ledes ned i skibets ballasttanke, hvoraf en er betegnet 7, medens saltvandsdelen føres tilbage til havet Yderligere er med 9 betegnet en trykudligningsdel, som modtager havvand fra osmosesystemet 5, således at en cirkulationspumpe 4 fører havvandet ind i osmosesystenet 5. Opstillingen på fig. 2 adskiller sig fra opstillingen på fig. 1 ved at drikkevandsdelen ledes ind i plastsække, hvoraf en er betegnet med 8. Disse plastsække er placeret i ballastanke.The separation of the seawater into a drinking water part and a salt water part is carried out by filtration in a so-called reverse osmosis process. The reverse osmosis process is initiated by the seawater via a high pressure pump 3 leading the seawater to a membrane in an osmosis system 5. The drinking water part 6 is led down into the ship's ballast tanks, one of which is designated 7, while the salt water part is returned to the sea. receives seawater from the osmosis system 5, so that a circulation pump 4 leads the seawater into the osmosis system 5. The arrangement in fig. 2 differs from the arrangement in fig. 1 by directing the drinking water part into plastic bags, one of which is denoted by 8. These plastic bags are placed in ballast tanks.

Opstillingen på fig. 3 adskiller sig fra opstillingen på fig. 2 ved at havvandet først ledes til ballasttankene, vist ved 11. Herfra ledes havvandet løbende under sejladsen til osmose anlægget, vist ved 10. Drikkevandsdelen ledes ind i plastsække 8, der er placeret i ballasttankene, medens saltvandsdelen føres tilbage til havet, som vist ved 10.The arrangement in fig. 3 differs from the arrangement in fig. 2 by first directing the seawater to the ballast tanks, shown at 11. From here, the seawater is led continuously during the voyage to the osmosis plant, shown at 10. The drinking water part is led into plastic bags 8 located in the ballast tanks, while the saltwater part is returned to the sea, as shown by 10.

Claims (6)

1 DK 2019 00168 A1 PATENTKRAV1 DK 2019 00168 A1 PATENT REQUIREMENTS 1. Fremgangsmåde til rensning af havvand, herunder ballastvand fra et skibs ballasttanke, hvor havvandet ved hjælp af pumper tilføres til et omvendt osmoseanlæg, hvor havvandet behandles, således at havvandet bliver adskilt i en drikkevandsdel, der tilføres til et lagringsområde, og en saltvandsdel, og hvor den salte del af havvandet under den omvendte osmoseproces tilvejebringes en salinitet, der udelukker at invasive arter kan overleve i havvandet.A method for purifying seawater, including ballast water from a ship's ballast tank, where the seawater is pumped to a reverse osmosis plant, where the seawater is treated so that the seawater is separated into a drinking water part supplied to a storage area and a salt water part, and wherein the saline portion of the seawater during the reverse osmosis process provides a salinity that precludes invasive species from surviving in the seawater. 2. Fremgangsmåde ifølge krav 1, kendetegnet ved, at saliniteten øges til en promille, der umuliggør levende liv.Method according to claim 1, characterized in that the salinity is increased to a per mille which makes living life impossible. 3. Fremgangsmåde ifølge krav 1 eller krav 2, kendetegnet ved, at den salte del af havvandet, der tilføres osmoseanlægget, pumpes direkte fra havet eller tilføres via havvand, der tidligere er tilført ballasttankene i skibet.Method according to claim 1 or claim 2, characterized in that the salty part of the seawater supplied to the osmosis plant is pumped directly from the sea or supplied via seawater previously supplied to the ballast tanks in the ship. 4. Fremgangsmåde ifølge krav 1 - 2, kendetegnet ved, at drikkevandet opbevares i nogle af ballasttankene og eventuelt andre tanke, medens den saltholdige del tilbageføres til havet.Method according to claims 1 - 2, characterized in that the drinking water is stored in some of the ballast tanks and possibly other tanks, while the saline part is returned to the sea. 5. Fremgangsmåde ifølge krav 1 - 2, kendetegnet ved, at lagringsområdet udgøres af en eller flere af skibets ballasttanke, og eventuelt andre tanke, idet den omvendte osmosebehandling af havvandet udføres fra en central eller alternativt op til flere decentrale omvendte osmosebehandlingsenheder, fra hvilke en bruger i givet fald kan beslutte hvilke ballasttanke, der skal modtage rent drikkevandvand.Method according to claims 1-2, characterized in that the storage area consists of one or more of the ship's ballast tanks, and possibly other tanks, the reverse osmosis treatment of the seawater being carried out from a central or alternatively up to several decentralized reverse osmosis treatment units, from which a the user may, if necessary, decide which ballast tanks are to receive clean drinking water. 6. Fremgangsmåde ifølge krav 3 - 5, kendetegnet ved, at der i mindst en af ballasttankene er anordnet plastsække, eller tilsvarende, der er indrettet til at modtage rent drikkevand.Method according to claims 3 - 5, characterized in that plastic bags or equivalent are arranged in at least one of the ballast tanks, which are arranged to receive clean drinking water.
DKPA201900168A 2019-02-06 2019-02-06 Procedure for purifying seawater. DK201900168A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DKPA201900168A DK201900168A1 (en) 2019-02-06 2019-02-06 Procedure for purifying seawater.
PCT/DK2020/000031 WO2020160735A2 (en) 2019-02-06 2020-01-30 Method for cleaning sea water
EP20739849.6A EP3921229A2 (en) 2019-02-06 2020-01-30 Method for cleaning sea water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DKPA201900168A DK201900168A1 (en) 2019-02-06 2019-02-06 Procedure for purifying seawater.

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DK201900168A1 true DK201900168A1 (en) 2021-01-20

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DKPA201900168A DK201900168A1 (en) 2019-02-06 2019-02-06 Procedure for purifying seawater.

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EP (1) EP3921229A2 (en)
DK (1) DK201900168A1 (en)
WO (1) WO2020160735A2 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005329300A (en) 2004-05-19 2005-12-02 Japan Organo Co Ltd Method and apparatus for preparing ballast water for ship
DE102005025428B4 (en) 2005-06-02 2007-08-09 Siemens Ag Drinking water production and supply ship
US9010261B2 (en) * 2010-02-11 2015-04-21 Allen Szydlowski Method and system for a towed vessel suitable for transporting liquids
NO20100543A1 (en) * 2009-08-10 2011-02-11 Presentwater Ved Geir Samnoy System and methods for purification and conversion of ballast water to fresh water during sea voyage, purification of exhaust gas and energy optimization on board vessels
EP2729360A1 (en) * 2011-07-06 2014-05-14 Grundfos Holding A/S A method for producing and storing desalinated water on a marine vessel
NO335891B1 (en) * 2012-10-25 2015-03-16 Aqtion Pte Ltd Method and system for treating a reverse osmosis liquid medium and using the system

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EP3921229A2 (en) 2021-12-15
WO2020160735A3 (en) 2020-11-12
WO2020160735A2 (en) 2020-08-13

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