EP1592611A1 - Bewuchsverhinderungs- und -beseitigungssystem gegen wasserorganismen - Google Patents

Bewuchsverhinderungs- und -beseitigungssystem gegen wasserorganismen

Info

Publication number
EP1592611A1
EP1592611A1 EP04710550A EP04710550A EP1592611A1 EP 1592611 A1 EP1592611 A1 EP 1592611A1 EP 04710550 A EP04710550 A EP 04710550A EP 04710550 A EP04710550 A EP 04710550A EP 1592611 A1 EP1592611 A1 EP 1592611A1
Authority
EP
European Patent Office
Prior art keywords
fouling
anode
eliminating system
cathode terminals
marine structure
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.)
Withdrawn
Application number
EP04710550A
Other languages
English (en)
French (fr)
Other versions
EP1592611A4 (de
Inventor
Myung Kuk Jung
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1592611A1 publication Critical patent/EP1592611A1/de
Publication of EP1592611A4 publication Critical patent/EP1592611A4/de
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/0017—Means for protecting offshore constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00—Methods preventing fouling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B63B59/04—Preventing hull fouling
    • 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
    • C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
    • 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

Definitions

  • the present invention relates to an anti-fouling and eliminating system against aquatic organisms, and more particularly, to an anti-fouling and eliminating system against aquatic organisms, which can prevent aquatic organisms from being attached to a marine structure and can eliminate the aquatic organisms themselves, thereby extending lifetime of the marine structure and facilitating a maintenance and repair work of the marine structure.
  • the anti-fouling means or method using copper ions employs seawater electrolytic technique for formation of copper ions.
  • copper ions are able to effectively chemically sterilize aquatic organisms attached to marine structure, they may undesirably accumulate in the human body by eating fish containing the toxic ions. Also, copper ions may result in seawater contamination. Since anti-fouling systems using copper ions require a large amount of copper metals, the maintenance and replacement cost disadvantageously increases.
  • hypochlorite formation technique chloride contained in seawater in a considerable amount is converted into hypochlorous acid by electrolysis to destroy aquatic organisms attached to a marine structure.
  • hypochlorite formation technique has been strictly restricted because it makes a problem that even microorganisms useful to the ecosystem are extirpated .
  • an anti-fouling and eliminating system against aquatic organisms comprising one or more anode and cathode terminals installed at a portion of a marine structure, and at least one pulse generator electrically connected to the anode and cathode terminals.
  • Pulses generated from the pulse generator are direct-current (DC) pulses having an instantaneous potential difference (V ) of 100 volts and sustaining for a period of 1 a nanosecond to 1 millisecond.
  • the anode and cathode terminals are installed at a seawater inlet of the marine structure connected to a pipe line or ballast tank.
  • the anode and cathode terminals may be installed on an internal wall of the pipe line for inducing seawater into the marine structure.
  • the anode and cathode terminals may be installed in a river and supported by buoys in a floating state.
  • Pulses generated from the pulse generator are alternating-current (AC) pulses having a potential difference V ranging from about 4 to 10 volts and a frequency b ranging from about 3 kHz to 3 MHz .
  • the anode and cathode terminals are installed at a surface of the marine structure contacting seawater.
  • the anode terminals may be shared by an anode based on forcible current applying mechanism.
  • the anode and cathode terminals are installed inside and outside a fish farm in parallel.
  • the anode and cathode terminals are installed on an internal wall of a seawater inlet pipe introduced to a land fish farm.
  • HG. 1 is a reference diagram illustrating a state of ions in a non electrolyte
  • HG. 2 is a reference diagram illustrating a state of ions in an electrolyte
  • HGS. 3 A and 3B are graphs illustrating time-dependent changes in voltages applied to an electrolyte;
  • HG. 4 is a schematic cross-sectional view illustrating an embodiment in which the system of the present invention is installed at a seawater inlet of a marine structure;
  • HG. 5 is a cross-sectional view schematically illustrating an embodiment in which the system according to the present invention is installed at a pipe line of a marine structure;
  • HG. 6 is a cross-sectional view schematically illustrating an embodiment in which the system according to the present invention is installed at a pipe line provided in an entry of a river;
  • HG. 7 is a cross-sectional view schematically showing an embodiment in which the system according to the present invention is installed on a surface of a marine structure;
  • HG. 8 is a cross-sectional view schematically showing a modified embodiment in which the system according to the present invention is installed on a surface of a marine structure;
  • HG. 9 is a plan view schematically showing that the system according to the present invention is installed on a marine fish farm.
  • HG. 10 is a plan view schematically showing that the system according to the present invention is installed on a land fish farm.
  • HG. 1 is a reference diagram illustrating a state of ions in a non electrolyte
  • HG. 2 is a reference diagram illustrating a state of ions in an electrolyte.
  • an electromagnetic field is established in a nonelectrolyte 12
  • an arbitrary object 10 in the electromagnetic field is polarized.
  • negative (-) poles of the charges are directed toward an anode terminal 15
  • positive (+) poles are directed toward a cathode terminal 17.
  • the object 10 in the electromagnetic field usually migrates toward a strong electromagnetic field area, producing a pulling capacity. If an electromagnetic field is established within an electrolyte 22, polarized particles present within the highly movable electrolyte 22 are pulled toward the opposite polarity. Referring to HG.
  • positive (+) poles of the object 20 are directed toward an anode terminal 25, and negative (-) poles are directed toward a cathode terminal 27.
  • negative (-) polarities opposite to positive (+) polarities of the anode terminal 25 are formed in a direction from the outside of the object 20 to the anode terminal 25, and positive (+) polarities opposite to those of the cathode terminal 27 are formed in a direction of the cathode terminal 27. Accordingly, a transmembrane potential is generated between the inside and outside of the object 20. If the transmembrane potential exceeds 1 volt, pores are produced on a membrane of the object 20.
  • HGS. 3 A and 3B are graphs illustrating time-dependent changes in voltages applied to an electrolyte.
  • HG. 3A illustrates a change in voltages applied for disintegrating a cellular membrane of an organism.
  • pulses applied to the organism have an instantaneous potential difference V of 100 volts and are DC pulses sustaining a for a time t of 1 nanosecond to 1 millisecond.
  • Such electromagnetic impact applying a methods can be advantageously employed to applications where tubular structures such as pipes or ducts are installed.
  • AC pulses having a potential difference V ranging from about 4 to 10 volts and a frequency ranging from about 3 b kHz to 3 MHz are applied to the organism in the electrolyte. Applying such AC pulses cannot disintegrate the cellular membranes of the organism, but can disturb the sensory system of the organism to be in an unstable state.
  • This method can be applied to marine structures, such as anchoring ships, marine power plants or fishing nets in a fish farm, to prevent attachment of organisms to such marine structures.
  • HGS. 4 through 6 are cross-sectional views schematically illustrating marine structures having anti-fouling and eliminating system for aquatic organisms according to embodiments of the present invention, in which DC pulses shown in HG. 3A are used.
  • HG. 4 is a schematic cross-sectional view illustrating an embodiment in which the system of the present invention is installed at a seawater inlet of a marine structure.
  • an anode terminal 45 and a cathode terminal 47 are installed at a seawater inlet 43 of a marine structure 40 to disintegrate aquatic organisms induced into the seawater inlet 43 with seawater 32.
  • the seawater 32 is used as engine cooling water of the marine structure 40 or ballast water.
  • a pulse generator 49 installed in the marine structure 40 generates pulses having an instantaneous potential difference V high enough to disintegrate cellular membranes a of the aquatic organisms, as shown in HG. 3 A. Accordingly, the aquatic fouling organisms and detrimental planktons, larvae or spawn contained in the seawater 32 induced to the marine structure 40 are disintegrated such that bores are created through the cellular membranes thereof.
  • an anode terminal 45 and a cathode terminal 47 installed at the seawater inlet 43 directly contact the seawater 32 acting as an electrolyte, and are electrically connected to a pulse generator 49.
  • a seawater inlet 43 is connected to a pipe line 44 and/or a ballast tank (not shown).
  • HG. 5 is a cross-sectional view schematically illustrating an embodiment in which the system according to the present invention is installed at a pipe line of a marine structure, such as a power plant, oil prospecting rig or ballast tank.
  • a pipe line of a marine structure such as a power plant, oil prospecting rig or ballast tank.
  • an anode terminal 55 and a cathode terminal 57 are installed on an internal wall of a pipe line 54 to disintegrate the aquatic organisms, detrimental planktons, larvae or spawn contained in the seawater 32 induced to the marine structure 40 when the seawater 32 used as cooling water or ballast water is induced to the marine structure.
  • a pipe line 54 to disintegrate the aquatic organisms, detrimental planktons, larvae or spawn contained in the seawater 32 induced to the marine structure 40 when the seawater 32 used as cooling water or ballast water is induced to the marine structure.
  • pulses having a high instantaneous potential difference V are used, and an ex- a planation thereof will not be given.
  • An anode terminal 55 and a cathode terminal 57 installed on the internal wall of the pipe line 54, directly contact the seawater 32 acting as an electrolyte, and are electrically connected to a pulse generator 59.
  • HG. 6 is a cross-sectional view schematically illustrating an embodiment in which the system according to the present invention is installed at a pipe line provided in an entry to a river, in which an anode terminal 65 and a cathode terminal 67 are installed on a pipe line 64 disposed at a river bed 60.
  • Buoys 63 having buoyancy are installed at the anode terminal 65 and the cathode terminal 67, so that the anode terminal 65 and the cathode terminal 67 are supported on the pipe line 64 in a floating state.
  • DC pulses shown in HG. 3A are generated by a pulse generator 69 installed on land to eliminate hazardous plankton contained in the river 62, which may have a deleterious effect on the ecosystem of the river, thereby preventing the green tide due to toxic plankton.
  • HGS. 7 and 8 illustrate an anti-fouling and eliminating system for aquatic organisms according to the present invention, the system being adapted to generate AC pulses.
  • HG. 7 is a cross-sectional view schematically showing an embodiment in which the system according to the present invention is installed on a surface of a marine structure.
  • an anode terminal 75 and a cathode terminal 77 are installed on a surface of a marine structure 70 contacting seawater 32 and are electrically connected to a pulse generator 79.
  • the anode terminal 75 and the cathode terminal 77 are installed on the surface of the marine structure 70, the anode terminal 75 and the cathode terminal 77 are submerged in the seawater 32 underneath the seawater surface 31.
  • disturbance is caused to the sensory system of aquatic organisms or plankton by generating the AC pulses shown in HG. 3B, potentials of which are continuously changed, thereby preventing the aquatic organisms or plankton from being attached to the surface of the marine structure 70.
  • HG. 8 shows an embodiment similar to that shown in HG. 7, in which an anode terminal 85 and a cathode terminal 87 are installed on a surface of a marine structure 80 and submerged in seawater 32 underneath the seawater surface 31, and are electrically connected to a pulse generator.
  • the anode terminal 85 may be separately installed, or may be shared by an anode based on forcible current applying mechanism.
  • a surface of the marine structure 80 may be used as the cathode terminal 87.
  • a cathode may be separately provided.
  • HGS. 9 and 10 show other embodiments of the anti-fouling and eliminating system according to the present invention, in which DC pulses or AC pulses are selectively generated for anti-fouling and eliminating purposes.
  • HG. 9 is a plan view schematically showing that the system according to the present invention is installed on a marine fish farm.
  • a plurality of anode terminals 95 and 96 and a plurality of cathode terminals 97 and 98 are installed inside and outside a fish farm 90 in parallel.
  • a pulse generator 99 which is connected to the anode terminals 95 and 96 and the cathode terminals 97 and 98, is adapted to selectively generate the DC pulses shown in HG. 3A or the AC pulses shown in HG. 3B.
  • aquatic organisms can be prevented from being attached to a fishing net of the fish farm 90 or can eliminate plankton that is harmful to fish farming.
  • HG. 10 is a plan view schematically showing that the system according to the present invention is installed on a land fish farm, where an anode terminal 105 and a cathode terminal 107 are installed on a seawater inlet pipe 104 introduced to a land fish farm 100.
  • DC pulses or AC pulses are selectively used to eliminate plankton that is harmful to fish farming, and ultimately prevent the red tide due to toxic plankton.
  • a pulse generator 109 is connected to the anode terminal 105 and the cathode terminal 107 using a separate support structure (not shown).
  • the present invention is not intended to be limited to the embodiments described above, and many modifications alterations may be effected within the scope of the appended claims.
  • the anode and cathode terminals described in the illustrative embodiments may be panel- or rod-shaped.
  • cellular membranes of aquatic organisms or plankton induced into a marine structure can be disintegrated by applying pulses having a high instantaneous potential difference.
  • the aquatic organisms can be prevented from being attached to a marine structure by applying pulses with potentials continuously varying.
  • aquatic organisms can be selectively disintegrated by controlling pulse generation, rather than by using chemical methods, suggesting that the anti-fouling and elimination system for aquatic organisms can be implemented in an environmentally friendly manner.
  • attachment of aquatic organisms to a marine structure, which may cause fouling is prevented, the life of the marine structure can be extended. Since the anti-fouling and eliminating system for aquatic organisms is simplified, a repair and maintenance work thereof can be easily made. Further, destruction of the marine ecosystem, resulting from regional, national or international migration of detrimental planktons, larvae or spawn of aquatic organisms present in a ballast tank, can be avoided.
EP04710550A 2003-02-13 2004-02-12 Bewuchsverhinderungs- und -beseitigungssystem gegen wasserorganismen Withdrawn EP1592611A4 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR2003009088 2003-02-13
KR10-2003-0009088A KR100538009B1 (ko) 2003-02-13 2003-02-13 수중생물 고착방지 및 제거시스템
PCT/KR2004/000281 WO2004071863A1 (en) 2003-02-13 2004-02-12 Anti-fouling and eliminating system against aquatic organisms

Publications (2)

Publication Number Publication Date
EP1592611A1 true EP1592611A1 (de) 2005-11-09
EP1592611A4 EP1592611A4 (de) 2008-12-17

Family

ID=32866888

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04710550A Withdrawn EP1592611A4 (de) 2003-02-13 2004-02-12 Bewuchsverhinderungs- und -beseitigungssystem gegen wasserorganismen

Country Status (3)

Country Link
EP (1) EP1592611A4 (de)
KR (1) KR100538009B1 (de)
WO (1) WO2004071863A1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100465346C (zh) * 2006-06-02 2009-03-04 中国科学院长春应用化学研究所 海洋船舶除生物污染的电化学方法
KR100913552B1 (ko) * 2007-10-30 2009-08-21 강릉원주대학교산학협력단 순환식 해수 살균시스템
KR100996495B1 (ko) 2008-06-09 2010-11-24 한국해양대학교 산학협력단 해양 시설물의 전기적 방오 장치
US8591740B2 (en) * 2008-08-18 2013-11-26 Siemens Water Technologies Llc Method and system for biofouling control of shipboard components
DE102009008069B4 (de) * 2009-02-04 2011-02-24 Tkms Blohm + Voss Nordseewerke Gmbh Vorrichtung zum Bewuchs- und Korrosionsschutz vor Seewassereintritten in Schiffen
SG179036A1 (en) * 2009-09-08 2012-04-27 Mass Technology Hk Ltd System and method for prevention adhesion of marine organisms to substrate contacted with seawater
NL2005473C2 (nl) 2010-10-07 2012-04-11 Stichting Wetsus Ct Excellence Sustainable Water Technology Werkwijze en inrichting voor het tegengaan van biologische vervuiling.
DK2890606T3 (da) * 2012-08-28 2022-02-14 Sembcorp Marine Repairs & Upgrades Pte Ltd System og fremgangsmåde til forebyggelse af adhæsion af organismer i vand til et substrat i kontakt med vandet
KR101955750B1 (ko) * 2012-08-30 2019-03-07 셈코프 머린 리패어즈 앤드 업그래이즈 피티이. 엘티디. 연속적 생물부착 제어로 선박평형수를 처리하는 시스템 및 방법
KR20140046592A (ko) * 2012-10-08 2014-04-21 주식회사 화승알앤에이 해양구조물에 해양생물의 부착, 성장 억제장치 및 억제방법
BR102014008965A2 (pt) * 2014-04-14 2016-05-17 Diogo Mitsuo Oliveira Ogawa sistema de emissão de corrente elétrica modulada para indução, controle e supressão de crescimento biológico na forma de biofouling e células planctônicas
KR102499680B1 (ko) * 2022-04-01 2023-02-14 에이치라인해운 주식회사 바이오 파울링 방지 시스템 및 원격 모니터링 시스템

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US3766032A (en) * 1971-07-19 1973-10-16 A Yeiser Method for control of marine fouling
US4196064A (en) * 1978-11-06 1980-04-01 Conoco, Inc. Marine fouling control
FR2638704A1 (fr) * 1988-11-09 1990-05-11 Intersub France Procede pour proteger des surfaces immergees contre les salissures biologiques et dispositif pour sa mise en oeuvre
DE4118831A1 (de) * 1991-06-07 1992-12-10 Corrobesch Vertriebsgesellscha Verfahren zur verhinderung eines bewuchses von stahlwasserbauwerken und schiffen
EP0550766A1 (de) * 1991-07-24 1993-07-14 Nakagawa Corrosion Protecting Co., Ltd. Verfahren und vorrichtung zur verhinderung des festhaftens von wasserorganismen
FR2697950A1 (fr) * 1992-11-10 1994-05-13 Mercier Dominique Dispositif pour la production de champs électrostatiques de basses tensions dans les solutions aqueuses minéralisées.
EP0985639A1 (de) * 1998-02-26 2000-03-15 Pentel Kabushiki Kaisha Elektrochemische antifouling-vorrichtung mit unterwasserstruktur und verfahren zur herstellung der unterwasserstruktur
US20020088720A1 (en) * 1997-04-25 2002-07-11 Red Swan, Inc. Process and apparatus for preventing oxidation of metal
WO2003038398A2 (en) * 2001-10-29 2003-05-08 Unitech, Llc. Pulsed electric field method and apparatus for preventing biofouling on aquatic surfaces

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US3766032A (en) * 1971-07-19 1973-10-16 A Yeiser Method for control of marine fouling
US4196064A (en) * 1978-11-06 1980-04-01 Conoco, Inc. Marine fouling control
FR2638704A1 (fr) * 1988-11-09 1990-05-11 Intersub France Procede pour proteger des surfaces immergees contre les salissures biologiques et dispositif pour sa mise en oeuvre
DE4118831A1 (de) * 1991-06-07 1992-12-10 Corrobesch Vertriebsgesellscha Verfahren zur verhinderung eines bewuchses von stahlwasserbauwerken und schiffen
EP0550766A1 (de) * 1991-07-24 1993-07-14 Nakagawa Corrosion Protecting Co., Ltd. Verfahren und vorrichtung zur verhinderung des festhaftens von wasserorganismen
FR2697950A1 (fr) * 1992-11-10 1994-05-13 Mercier Dominique Dispositif pour la production de champs électrostatiques de basses tensions dans les solutions aqueuses minéralisées.
US20020088720A1 (en) * 1997-04-25 2002-07-11 Red Swan, Inc. Process and apparatus for preventing oxidation of metal
EP0985639A1 (de) * 1998-02-26 2000-03-15 Pentel Kabushiki Kaisha Elektrochemische antifouling-vorrichtung mit unterwasserstruktur und verfahren zur herstellung der unterwasserstruktur
WO2003038398A2 (en) * 2001-10-29 2003-05-08 Unitech, Llc. Pulsed electric field method and apparatus for preventing biofouling on aquatic surfaces

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See also references of WO2004071863A1 *

Also Published As

Publication number Publication date
KR100538009B1 (ko) 2005-12-21
KR20040073112A (ko) 2004-08-19
EP1592611A4 (de) 2008-12-17
WO2004071863A1 (en) 2004-08-26

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