EP3921229A2 - Method for cleaning sea water - Google Patents

Method for cleaning sea water

Info

Publication number
EP3921229A2
EP3921229A2 EP20739849.6A EP20739849A EP3921229A2 EP 3921229 A2 EP3921229 A2 EP 3921229A2 EP 20739849 A EP20739849 A EP 20739849A EP 3921229 A2 EP3921229 A2 EP 3921229A2
Authority
EP
European Patent Office
Prior art keywords
seawater
drinking water
tanks
sea
ballast tanks
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP20739849.6A
Other languages
German (de)
French (fr)
Inventor
Jonas Kring HØJGAARD
Bent HØJGAARD
Tom SERHOLT
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aridity Aps
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
Publication of EP3921229A2 publication Critical patent/EP3921229A2/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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

Definitions

  • This invention relates to a m ethod for cleaning sea water.
  • I n connection with ships that are located on the sea these ships are often crossing several sea areas. These sea areas have a varied wildlife.
  • I t is undesirable if the sea is fed with invasive species during discharging of ballast water. This can f. inst. be prevented if the ballast water in a process is separated in a drinking water part and a saline part where the saline part has a salt level so high that no organisms can survive and that salt water thereby can be returned to the sea.
  • WO 2005/ 1 10928 A1 reveals a m ethod to prevent the water in the ballast tanks to rot during sailing. Therefore, it is a purpose with the invention to provide a m ethod where during production of drinking water unwanted invasive species are prevented to be transferred alive back to the sea, when the saline part is returned to the sea.
  • ballast water from ballast tanks on a ship is provided, where the seawater by use of pumps is fed to a reverse osm osis plant, where the seawater is treated such that the seawater is being separated in a drinking water part, that is fed to storage areas, and a saline part where the salinity part of the seawater during the reverse osmosis is gaining a salinity that excludes invasive species to survive in the sea water, (70 ppt or higher) .
  • I t is expedient, as m entioned in claim 2, that the salinity is increased to a value, that makes survival of life im possible. (70 ppt or higher) .
  • I t is further expedient, if as stated in claim 3, that the saline part, being fed to the osm osis part is pum ped direct from the sea or is fed via seawater being earlier fed to the ballast tanks in the ship.
  • I t is advantageous if as, stated in claim 4, that the drinking water is stored in some of the ballast tanks or eventually other tanks on the ship, whereas the saline part is returned to the sea.
  • the storage area can, as stated in claim 5, be constituted by one or m ore ballast tanks, or eventually other tanks as the reverse osm osis is treated in a central or eventually up to m ore decentralized osm osis plants, from where a user in case can decide which ballast tanks, that are going to be used to receive drinking water.
  • a further expedient embodim ent of the invention is, as stated in clam 6, that in at least one of the ballast tanks plastic bags or the like are installed, that is adapted to receive clean drinking water.
  • Fig, 1 illustrates a first em bodiment of the invention
  • Fig. 2 illustrates a second em bodim ent of the invention
  • 1 denotes schem atic an ocean-going ship.
  • the drinking water part is led to the ballast tanks, one of them denoted 7, whereas the saline part 10 is returned to the sea.
  • Further 9 denotes a pressure equalization, that receives sea water from the osmosis plant, such that a circulation pump 4 led the sea water into the osmosis plant 5.
  • the layout on fig. 2 differs from the layout on f ig .1 in that the drinking water part is led in plastic bags, where one of these is denoted 8. These plastic bags are placed in ballast tanks.
  • the layout on fig. 3 differs from the layout on fig. 2 in that the seawater is first led to the ballast tanks shown at 1 1 . From there ballast tanks seawater is currently during sailing, led to the osmosis plant. The drinking water is led into plastic bag or the like plastic being placed in the ballast tanks whereas the saline part is returned to the sea shown at 10.

Abstract

By producing drinking water on a ship, seawater is led to a storage area where the seawater is treated in a reverse osmose process, such that drinking water is provided. To secure that the seawater left after being treated in the osmose do not contain unwanted invasive species that is led back to the sea, it is secured that the salinity after being osmose processed is so high that living life is made impossible. (70 ppt or higher), Appropriate the drinking water can be placed in the ballast tanks on the ship or other tanks, or alternatively on the ship in plastic bags, being positioned in the ballast tanks or in other tanks, other places on the ship.

Description

M ETHOD FOR CLEAN I NG SEA W ATER.
This invention relates to a m ethod for cleaning sea water. I n connection with ships that are located on the sea, these ships are often crossing several sea areas. These sea areas have a varied wildlife. I t is undesirable if the sea is fed with invasive species during discharging of ballast water. This can f. inst. be prevented if the ballast water in a process is separated in a drinking water part and a saline part where the saline part has a salt level so high that no organisms can survive and that salt water thereby can be returned to the sea.
By producing drinking water from seawater, it is known to use a reverse osmosis process.
Examples on this, are described in DE 102005025428 and WO 2005/ 1 10928 A1 .
I n these publications it is explained how to produce drinking water by an osmosis process, that can be used on the ship or alternatively distributed to areas with lim ited drinking water resources. None of these two publications suggests producing drinking water on basis of seawater, where a reverse osmosis process is preventing that unwanted invasive species can survive in ballast water.
I t is noted that DE10 2005 025 428 D1 reveals a method to disinfect water in the ballast tanks in a land-based plant after the ship has arrived to a harbor.
Further WO 2005/ 1 10928 A1 reveals a m ethod to prevent the water in the ballast tanks to rot during sailing. Therefore, it is a purpose with the invention to provide a m ethod where during production of drinking water unwanted invasive species are prevented to be transferred alive back to the sea, when the saline part is returned to the sea. The purpose is fulfilled with a m ethod for cleaning sea water, where ballast water from ballast tanks on a ship is provided, where the seawater by use of pumps is fed to a reverse osm osis plant, where the seawater is treated such that the seawater is being separated in a drinking water part, that is fed to storage areas, and a saline part where the salinity part of the seawater during the reverse osmosis is gaining a salinity that excludes invasive species to survive in the sea water, (70 ppt or higher) .
I t is expedient, as m entioned in claim 2, that the salinity is increased to a value, that makes survival of life im possible. (70 ppt or higher) .
I t is further expedient, if as stated in claim 3, that the saline part, being fed to the osm osis part is pum ped direct from the sea or is fed via seawater being earlier fed to the ballast tanks in the ship.
I t is advantageous if as, stated in claim 4, that the drinking water is stored in some of the ballast tanks or eventually other tanks on the ship, whereas the saline part is returned to the sea.
The storage area can, as stated in claim 5, be constituted by one or m ore ballast tanks, or eventually other tanks as the reverse osm osis is treated in a central or eventually up to m ore decentralized osm osis plants, from where a user in case can decide which ballast tanks, that are going to be used to receive drinking water.
A further expedient embodim ent of the invention is, as stated in clam 6, that in at least one of the ballast tanks plastic bags or the like are installed, that is adapted to receive clean drinking water.
The invention will now be m ore detailed explained.
Fig, 1 illustrates a first em bodiment of the invention
Fig. 2 illustrates a second em bodim ent of the invention
whereas fig.3 illustrates a variant of fig.2
On the figures, 1 denotes schem atic an ocean-going ship.
2 denotes an input to receiving seawater and 10 denotes sea water being returned to the sea after the seawater has been subject to a process, where the seawater is separated in a drinking water part, denoted 6, and a saline part is carried out in a so called reverse osm osis. The reverse osmosis process is implemented by the seawater is led via a high-pressure pump 3 that leds the sea water to a m em brane in an osmosis system 5.
The drinking water part is led to the ballast tanks, one of them denoted 7, whereas the saline part 10 is returned to the sea.
Further 9 denotes a pressure equalization, that receives sea water from the osmosis plant, such that a circulation pump 4 led the sea water into the osmosis plant 5.
The layout on fig. 2 differs from the layout on f ig .1 in that the drinking water part is led in plastic bags, where one of these is denoted 8. These plastic bags are placed in ballast tanks.
The layout on fig. 3 differs from the layout on fig. 2 in that the seawater is first led to the ballast tanks shown at 1 1 . From there ballast tanks seawater is currently during sailing, led to the osmosis plant. The drinking water is led into plastic bag or the like plastic being placed in the ballast tanks whereas the saline part is returned to the sea shown at 10.

Claims

Claim s
1 . Method for cleaning sea water, where ballast water from ballast tanks on a ship is provided, where the seawater by use of pum ps is fed to a reverse osmosis plant, where the seawater is treated such that the seawater is being separated in a drinking water part, that is fed to storage areas, and a saline part where the salinity part of the seawater during the reverse osmosis is gaining a salinity that excludes invasive species to survive in the sea water, (70 ppt or higher) .
2. Method according to claim 1 , characterized in , that the salinity is increased to a value, that makes survival of life impossible. (70 ppt or higher) .
3. Method according to claim 1 -2 characterized in , that the saline part, being fed to the osmosis part is pum ped direct from the sea or is fed via seawater being earlier fed to the ballast tanks in the ship.
4. Method according to claim 1 -3 characterized in , that the drinking water is stored in some of the ballast tanks or eventually other tanks on the ship, whereas the saline part is returned to the sea.
5. Method according to claim 1 - 4, characterized in , be constituted by one or m ore ballast tanks, or eventually other tanks as the reverse osm osis is treated in a central or eventually up to more decentralized osmosis plants, from where a user in case can decide which ballast tanks, that are going to be used to receive drinking water.
6. Method according to claim 1 -5 characterized in , that in at least one of the ballast tanks plastic bags or the like are installed, that is adapted to receive clean drinking water.
EP20739849.6A 2019-02-06 2020-01-30 Method for cleaning sea water Pending EP3921229A2 (en)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
EP3921229A2 true EP3921229A2 (en) 2021-12-15

Family

ID=71607673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20739849.6A Pending EP3921229A2 (en) 2019-02-06 2020-01-30 Method for cleaning sea water

Country Status (3)

Country Link
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

Also Published As

Publication number Publication date
WO2020160735A3 (en) 2020-11-12
WO2020160735A2 (en) 2020-08-13
DK201900168A1 (en) 2021-01-20

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