WO2004054932A1 - Electrochemical method of sterilizing the sea ballast of ships - Google Patents

Electrochemical method of sterilizing the sea ballast of ships Download PDF

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Publication number
WO2004054932A1
WO2004054932A1 PCT/GR2003/000059 GR0300059W WO2004054932A1 WO 2004054932 A1 WO2004054932 A1 WO 2004054932A1 GR 0300059 W GR0300059 W GR 0300059W WO 2004054932 A1 WO2004054932 A1 WO 2004054932A1
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WO
WIPO (PCT)
Prior art keywords
ballast
sea water
ships
sterilizing
sea
Prior art date
Application number
PCT/GR2003/000059
Other languages
French (fr)
Inventor
Markos Ninolakis
Original Assignee
Markos Ninolakis
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 Markos Ninolakis filed Critical Markos Ninolakis
Priority to EP03777017A priority Critical patent/EP1613555A1/en
Priority to AU2003286274A priority patent/AU2003286274A1/en
Publication of WO2004054932A1 publication Critical patent/WO2004054932A1/en

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Classifications

    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/46109—Electrodes
    • C02F2001/46133—Electrodes characterised by the material
    • C02F2001/46138—Electrodes comprising a substrate and a coating
    • 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
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/4612—Controlling or monitoring
    • C02F2201/46125—Electrical variables
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/4616—Power supply
    • C02F2201/4617—DC only
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/005—Processes using a programmable logic controller [PLC]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/04—Oxidation reduction potential [ORP]
    • 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

Definitions

  • the invention refers to the electrochemical method of sterilizing the sea water, which is used as ballast for the balance of ships.
  • sea water which is used as ballast for the balance of ships, from one sea area to another, has caused a major problem to the sea environment, because pathogenic organisms that are dangerous for spreading illnesses, are being transported and the transferee species, that do not have their natural enemies at the new sea environment, are multiplied in the expense of the native organisms, thus changing the area's variety of live organisms.
  • the problem is dealt by changing the sea ballast at water depths of 2000m, but this is something that besides the cost, cannot accomplish a change of the sea ballast more than 90%, or by using chemicals, which cause an environmental decay, or with UV rays, which are ineffective, due to the fact that they do not have a residual action.
  • the electrochemical method of sterilizing the sea ballast uses sea water for the production of the oxidants, such as O 3 , Cl 2 , ClO 2 , is very simple in use and totally effective to the sterilization of the sea ballast and can be applied to great flo s of sea water.
  • the sea water which enters the bilge of the ship, passes through a separation hydro cyclone and the whole or a part of it is led directly or through a bypass to an electrolytic cell, which is supported by a voltage supply of 3 to 30 Volts and an intensity of 5 to 600 Ambers.
  • the total amount of water gathers to the ballast docks of the ship.
  • a REDOX meter that is connected with a PLC, which, depending on the REDOX value, gives a dosing pump, which is within a production and storage container of oxidant made of sea water, the instruction to inject it to the water ballast docks.
  • a second REDOX meter that is inside the docks, gives the instruction to inject oxidation reduction agents, a solution of acid Sodium Thiosulfate or Sodium Thiosulfate from storage containers. Furthermore, through the line of sea water collection and rejection, there are nozzles that inject a solution of acid Sodium Thiosulfate or Sodium Thiosulfate from storage containers after a PLC instruction and through a dosing pump during the rejection in order to inactivate all the oxidants that are within the sea ballast so as to avoid the environment decay.
  • a hydro cyclone that separates solids from liquids (a) is put at an inflow line of sea ballast 300m3/h.
  • the solids left on the grid end up to a bucket (b) in order to be farther treated.
  • the already separated from solids sea water, containing a salt concentration of 2.9% to 3.5%, is led to the electrolytic cell (c), which is supported by a supply of direct current (k) with a voltage of 0.5 to 30 Volts and an intensity of 5 to 600 Ambers.
  • k direct current
  • the already electrolyzed water along with the oxidants ends to the ballast dock (I).
  • a hydro cyclone that separates solids from liquids (a) is put at an inflow line of sea ballast 300m3 h.
  • the solids left on the grid end up to a bucket (b) in order to be farther treated.
  • the already separated from solids sea water, ends to the ballast dock (T).
  • the oxidant is produced by the electrolytic cell (c), which is supported by a supply of direct current (k) with a voltage of 0.5 to 30 Volts and an intensity of 5 to 600 Ambers, by the recirculation of the sea water through the pump (d) inside the container (j).
  • a REDOX meter (f) Inside the ballast dock f ), there is a REDOX meter (f), which is connected to the PLC (e) and if the residual oxidants at the outflow are more than what is provided by the legislation, gives the instruction to a dosing pump (m) that is put inside a container with a solution of Sodium Thiosulfate (n) to inject it in the ballast dock (f) in order to inactivate any possible residual oxidants.

Abstract

Electrochemical method of sterilizing the sea water, which is used as a ballast balance of the ships, during which the solid ingredients of the sea ballast are separated, through a hydro cyclone system and the whole or a part of the sea water is led to a specific electrolytic cell, within which oxidants are produced under specific electrolysis conditions and these oxidants accomplish its sterilization. Subsidiarily as to the existence of adequate oxidants, the same electrolytic cell with a different hydraulic connection in a container with sea water, produces oxidants, which after the instruction of the PLC that receives indications by a REDOX meter within the ballast dock, are injected through a dosing pump and the desired value of the oxidants is kept within the sea ballast. Furthermore, according to the indications of a REDOX meter, the PLC gives the instruction to inject the oxidation reduction material for the dechlorination of the sea ballast during its rejection through the inflow - outflow line.

Description

ELECTROCHEMICAL METHOD OF STERILIZING THE SEA BALLAST OF SHIPS
TECHNICAL FIELD
The invention refers to the electrochemical method of sterilizing the sea water, which is used as ballast for the balance of ships.
The transportation of sea water, which is used as ballast for the balance of ships, from one sea area to another, has caused a major problem to the sea environment, because pathogenic organisms that are dangerous for spreading illnesses, are being transported and the transferee species, that do not have their natural enemies at the new sea environment, are multiplied in the expense of the native organisms, thus changing the area's variety of live organisms. Up to today the problem is dealt by changing the sea ballast at water depths of 2000m, but this is something that besides the cost, cannot accomplish a change of the sea ballast more than 90%, or by using chemicals, which cause an environmental decay, or with UV rays, which are ineffective, due to the fact that they do not have a residual action.
ADVANTAGES OF THE INVENTION
Since the electrochemical method of sterilizing the sea ballast uses sea water for the production of the oxidants, such as O3, Cl2, ClO2, is very simple in use and totally effective to the sterilization of the sea ballast and can be applied to great flo s of sea water.
DESCRIPTION
The sea water, which enters the bilge of the ship, passes through a separation hydro cyclone and the whole or a part of it is led directly or through a bypass to an electrolytic cell, which is supported by a voltage supply of 3 to 30 Volts and an intensity of 5 to 600 Ambers. The total amount of water gathers to the ballast docks of the ship. Inside these docks, there is a REDOX meter that is connected with a PLC, which, depending on the REDOX value, gives a dosing pump, which is within a production and storage container of oxidant made of sea water, the instruction to inject it to the water ballast docks. In order to inactivate the oxidants, a second REDOX meter that is inside the docks, gives the instruction to inject oxidation reduction agents, a solution of acid Sodium Thiosulfate or Sodium Thiosulfate from storage containers. Furthermore, through the line of sea water collection and rejection, there are nozzles that inject a solution of acid Sodium Thiosulfate or Sodium Thiosulfate from storage containers after a PLC instruction and through a dosing pump during the rejection in order to inactivate all the oxidants that are within the sea ballast so as to avoid the environment decay.
Example 1. Drawing 1.
A hydro cyclone that separates solids from liquids (a) is put at an inflow line of sea ballast 300m3/h. The solids left on the grid end up to a bucket (b) in order to be farther treated. The already separated from solids sea water, containing a salt concentration of 2.9% to 3.5%, is led to the electrolytic cell (c), which is supported by a supply of direct current (k) with a voltage of 0.5 to 30 Volts and an intensity of 5 to 600 Ambers. We apply a voltage of 16 Volts and we have an intensity of 250 Ambers at the electrolytic cell for the production of the oxidants. The already electrolyzed water along with the oxidants ends to the ballast dock (I). Inside the dock 0), there is a REDOX meter (f), which is connected to the PLC (e). If the residual oxidants are below the requested limit Cl2 / lit, the PLC gives the insfruction through a dosing pump (h), which is put inside the oxidants production and storage container (j), to forward the oxidant to the ballast dock (f). Through the line of sea water collection and rejection, during the rejection in order to protect the environment from the discard of more oxidants than what is provided by the legislation, there are nozzles (d) that are connected to a container with a solution of acid Sodium Thiosulfate (n) and through a dosing pump (m) inject acid Sodium Thiosulfate, for the thorough inactivation of any possible residual oxidants, following the instmction of the PLC (e) that receives the indication from a REDOX meter (g). Example 2. Drawing 2.
A hydro cyclone that separates solids from liquids (a) is put at an inflow line of sea ballast 300m3 h. The solids left on the grid end up to a bucket (b) in order to be farther treated. The already separated from solids sea water, ends to the ballast dock (T). Inside the dock (T), there is a REDOX meter (g), which is connected to the PLC (e) that gives the instmction through a dosing pump (h), which is put inside the oxidants production and storage container (j), to forward the oxidant to the ballast dock (I), up to the requested limit Cl2 / lit. The oxidant is produced by the electrolytic cell (c), which is supported by a supply of direct current (k) with a voltage of 0.5 to 30 Volts and an intensity of 5 to 600 Ambers, by the recirculation of the sea water through the pump (d) inside the container (j). Inside the ballast dock f ), there is a REDOX meter (f), which is connected to the PLC (e) and if the residual oxidants at the outflow are more than what is provided by the legislation, gives the instruction to a dosing pump (m) that is put inside a container with a solution of Sodium Thiosulfate (n) to inject it in the ballast dock (f) in order to inactivate any possible residual oxidants.

Claims

1. Electrochemical method of sterilizing Ihe sea water, which is used as a ballast balance of the ships, during which the incoming sea water goes through a hydro cyclone system of liquids - solids separation and then the whole or a part of it passes through an electrolytic cell, whose anode is made of Titanium, on which one layer of Pt, or Ir, or Rh, or Pd, or Ru, or Zr, or an alloy of these or two layers, the first made of Ta, or Nb, or Zr, or an alloy of these and the second made of Pt, or Ir, or Rh, or Pd, or Ru, or Zr, or an alloy of these are placed with a welding method and whose cathode is made of steel 316L, or 316IS, or 322 and during the passing through of the sea water an electrolysis is taken place under a controlled voltage and intensity of direct current, controlled pH, controlled salt concentration. The reading of the residual oxidants inside the ballast docks is carried out by a REDOX meter, which gives the instruction, through a PLC, to inject oxidants until they reach the desired value. These oxidants have been produced in a sea water container by an electrolytic cell, whose anode is made of Titanium, on which one layer of Pt, or Ir, or Rh, or Pd, or Ru, or Zr, or an alloy of these or two layers, the first made of Ta, or Nb, or Zr, or an alloy of these and the second made of Pt, or Ir, or Rh, or Pd, or Ru, or Zr, or an alloy of these are placed with a welding method and whose cathode is made of steel 316L, or 316IS, or 322. The oxidation reduction of the sea ballast is carried out through dosing pumps by adding oxidation reduction agents, from their storage containers, in the sea ballast docks or during the outflow of the sea ballast through the inflow outflow line, by injecting oxidation reduction agents from nozzles after the instruction of the PLC that counts the oxidants through a REDOX meter.
2. Electrochemical method of sterilizing the sea water, which is used as aballast balance of the ships, according to the claim 1, where the concentration of the elecfrolytically produced oxidant inside the sea ballast docks, in the form of free chlorine is within 1 to 100 ppm.
3. Electrochemical method of sterilizing the sea water, which is used as a ballast balance of the ships, according to the claim 1, where the voltage of the direct current is from 3 to 30 Volts.
4. Elecfrochernical method of sterilizing the sea water, which is used as a ballast balance of the ships, according to the claim 1, where the intensity of the direct current is from 5 to 800 Ambers.
5. Electrochemical method of sterilizing the sea water, which is used as a ballast balance of the ships, according to the claim 1 , where the pH value during the electrolysis is within the range of 5 to 9.
6. Electrochemical method of sterilizing the sea water, which is used as a ballast balance of the ships, according to the claim 1, where the measurement of the oxidants in the sea water ballast and the at the inflow outflow line is carried out with a
REDOX meter.
7. Electrochemical method of sterilizing the sea water, which is used as a ballast balance of the ships, according to the claim 1, where the concentration of the oxidant in the production and storage container in the form of free chlorine is within 500 to 10.000 pp .
8. Electrochemical method of sterilizing the sea water, which is used as aballast balance of the ships, according to the claim 1, where the oxidation reduction is carried out inside the sea water ballast docks and at the inflow outflow line using a solution of acid Sodium Thiosulfate by a dosing pump or by nozzles, based on the instmction of the PLC that receives the indication of a REDOX meter.
9. Electrochemical method of sterilizing the sea water, which is used as a ballast balance of the ships, according to the claim 1, where the oxidation reduction is carried out inside the sea water ballast docks and at the inflow outflow line using a solution of Sodium Thiosulfate by a dosing pump or by nozzles, based on the instruction of the PLC that receives the indication of a REDOX meter.
10. Electrochemical method of sterilizing the sea water, which is used as aballast balance of the ships, according to the claim 1, where the salt concentration of the sea water is within 2.8% to 3.5 %.
PCT/GR2003/000059 2002-12-18 2003-12-17 Electrochemical method of sterilizing the sea ballast of ships WO2004054932A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP03777017A EP1613555A1 (en) 2002-12-18 2003-12-17 Electrochemical method of sterilizing the sea ballast of ships
AU2003286274A AU2003286274A1 (en) 2002-12-18 2003-12-17 Electrochemical method of sterilizing the sea ballast of ships

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GR20020100545A GR1004273B (en) 2002-12-18 2002-12-18 Electrochemical method of sterilising seawater ballast in ships.
GR20020100545 2002-12-18

Publications (1)

Publication Number Publication Date
WO2004054932A1 true WO2004054932A1 (en) 2004-07-01

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Country Status (4)

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EP (1) EP1613555A1 (en)
AU (1) AU2003286274A1 (en)
GR (1) GR1004273B (en)
WO (1) WO2004054932A1 (en)

Cited By (8)

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Publication number Priority date Publication date Assignee Title
WO2007032577A1 (en) * 2005-09-14 2007-03-22 Korea Ocean Research And Development Institute Electrolytic sterilizing apparatus for ship ballast water
EP1824792A2 (en) * 2004-11-29 2007-08-29 Severn Trent de Nora, LLC System and method for treatment of ballast water
DE102006045558A1 (en) * 2006-09-25 2008-04-03 Rwo Gmbh Water treatment plant
WO2008153807A2 (en) * 2007-06-01 2008-12-18 Severn Trent De Nora, L.L.C. System and process for treatment of ballast water
WO2008153808A2 (en) 2007-06-01 2008-12-18 Severn Trent De Nora, L.L.C. System and process for treatment and de-halogenation of ballast water
WO2009023241A1 (en) 2007-08-15 2009-02-19 Siemens Water Technologies Corp. Method and system for treating ballast water
DE102011003187A1 (en) 2011-01-26 2012-07-26 Evonik Degussa Gmbh Apparatus and method for reducing the content of hydrogen peroxide and peracetic acid in a water stream
JPWO2014064942A1 (en) * 2012-10-25 2016-09-08 パナソニックＩｐマネジメント株式会社 Ballast water treatment method and ballast water treatment apparatus used therefor

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CN103206433B (en) * 2012-01-17 2015-08-12 何荣志 A kind of hydraulic pressure group control energy-saving system

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Cited By (21)

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EP1824792A2 (en) * 2004-11-29 2007-08-29 Severn Trent de Nora, LLC System and method for treatment of ballast water
EP1824792A4 (en) * 2004-11-29 2009-09-02 Sev Trent De Nora Llc System and method for treatment of ballast water
US8152989B2 (en) 2005-01-18 2012-04-10 Severn Trent De Nora, Llc System and process for treating ballast water
US8147673B2 (en) 2005-01-18 2012-04-03 Severn Trent De Nora, Llc System and process for treatment and de-halogenation of ballast water
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JP4723647B2 (en) * 2005-09-14 2011-07-13 韓国海洋研究院 Electrolytic disinfection device for marine ballast water
DE102006045558A1 (en) * 2006-09-25 2008-04-03 Rwo Gmbh Water treatment plant
WO2008153808A2 (en) 2007-06-01 2008-12-18 Severn Trent De Nora, L.L.C. System and process for treatment and de-halogenation of ballast water
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WO2008153807A3 (en) * 2007-06-01 2009-03-26 Sev Trent De Nora L L C System and process for treatment of ballast water
WO2008153807A2 (en) * 2007-06-01 2008-12-18 Severn Trent De Nora, L.L.C. System and process for treatment of ballast water
EP2178801A1 (en) * 2007-08-15 2010-04-28 Siemens Water Technologies Corp. Method and system for treating ballast water
WO2009023241A1 (en) 2007-08-15 2009-02-19 Siemens Water Technologies Corp. Method and system for treating ballast water
EP2178801A4 (en) * 2007-08-15 2012-04-18 Siemens Industry Inc Method and system for treating ballast water
US8968575B2 (en) 2007-08-15 2015-03-03 Evoqua Water Technologies Llc Method and system for treating ballast water
DE102011003187A1 (en) 2011-01-26 2012-07-26 Evonik Degussa Gmbh Apparatus and method for reducing the content of hydrogen peroxide and peracetic acid in a water stream
WO2012101026A1 (en) 2011-01-26 2012-08-02 Evonik Degussa Gmbh Device and method for reducing the hydrogen peroxide and peracetic acid content in a water flow
JPWO2014064942A1 (en) * 2012-10-25 2016-09-08 パナソニックＩｐマネジメント株式会社 Ballast water treatment method and ballast water treatment apparatus used therefor
US10287200B2 (en) * 2012-10-25 2019-05-14 Panasonic Intellectual Property Management Co., Ltd. Method for treating ballast water and device for treating ballast water used therefor

Also Published As

Publication number Publication date
EP1613555A1 (en) 2006-01-11
AU2003286274A1 (en) 2004-07-09
GR1004273B (en) 2003-06-23

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