WO2017220659A1 - Système de traitement d'eau de ballast - Google Patents

Système de traitement d'eau de ballast Download PDF

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Publication number
WO2017220659A1
WO2017220659A1 PCT/EP2017/065250 EP2017065250W WO2017220659A1 WO 2017220659 A1 WO2017220659 A1 WO 2017220659A1 EP 2017065250 W EP2017065250 W EP 2017065250W WO 2017220659 A1 WO2017220659 A1 WO 2017220659A1
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WO
WIPO (PCT)
Prior art keywords
ballast water
water treatment
disinfectant
injection port
line
Prior art date
Application number
PCT/EP2017/065250
Other languages
English (en)
Inventor
Per AARNÆS
David M. EVANGELISTI
Original Assignee
Oceansaver As
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 Oceansaver As filed Critical Oceansaver As
Publication of WO2017220659A1 publication Critical patent/WO2017220659A1/fr

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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
    • 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
    • C02F1/46—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
    • C02F1/4674—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation with halogen or compound of halogens, e.g. chlorine, bromine
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • 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 the technical field of ballast water treatment, and more particularly to a system for treatment of ballast water, a method for installing such a system and a mixing device for such a system.
  • Ballast water is water transported by ships in the ballast water tanks or sometimes in other suitable spaces such as in cargo holds or in cargo tanks. It is pumped into the tanks at a water "donor" location to compensate for the changing of centre of gravity as cargo and/or fuel is discharged/consumed and hence to maintain stability. Correct ballasting is essential from a structural port of view and also used for performance reasons in order to ensure proper propeller and rudder immersion, proper bridge view as well as maintaining desired vessel movement and handling characteristics.
  • the ballast water is transported to a water "recipient” location, generally at a port where the vessel is to be loaded with cargo, which is potentially outside the bio-geographic region of that of the ballast water origin. It may then be discharged as cargo is taken on-board.
  • Ballast water may host a range of species including zooplankton, phytoplankton, bacteria and viruses. These may not have natural predators at the port of discharge and may establish and reproduce at the new location causing significant problems for the environment, industry and human health.
  • BWTS ballast water treatment system
  • the requirement of having a BWTS will affect all oceangoing vessels used in international transport.
  • the vessels include existing vessels, wherein a BWTS must be retrofitted, and new vessels, wherein a BWTS may be installed during
  • ballast water treatment systems for killing or disabling micro-organisms and for reducing or removing other pollutants, are well known in the art.
  • the present invention provides a ballast treatment system which alleviates or avoids at least some of the disadvantages of the prior art systems. Further, the BWTS according to the invention is easy to install both in existing vessels, i.e. retrofitting, and in new builds.
  • the present invention provides a ballast water treatment system comprising a main ballast water line, a bypass line and a water treatment pipe section, wherein
  • the main ballast water line comprises a first end, a second end, a ballast water pump and a bypass valve, the first end is fluidly connected to a sea chest and the second end is fluidly connected to a ballast tank system, and the bypass valve is arranged downstream the ballast water pump;
  • the bypass line comprises a filter unit and is fluidly connected upstream and downstream of the bypass valve, such that ballast water may be diverted from the main ballast water line and through the bypass line when the bypass valve is closed;
  • the water treatment pipe section is arranged downstream the filter unit and comprises a first sampling port, a second sampling port, a first injection port for a disinfectant, a second injection port for a disinfectant neutralizer and a mixing element;
  • the first sampling port is arranged upstream the mixing element
  • the second sampling port is arranged downstream the mixing element
  • the first injection port and the second injection port are arranged such that a disinfectant or a disinfectant neutralizer entering the water treatment pipe section, during use, is mixed with ballast water by the mixing element.
  • the first injection port and/or the second injection port may be defined as being arranged upstream of, or at, the mixing element.
  • the main ballast water line may be defined as being arranged to provide ballast water from a sea chest to a ballast tank system and comprises a ballast water pump and a bypass valve, the bypass valve is arranged downstream the ballast water pump.
  • the water treatment pipe section is arranged in the main ballast water line (i.e. the water treatment pipe section constitutes a part or section of the main ballast water line.
  • the main ballast water line comprises a fail open flow control valve arranged
  • the first injection port and/or the second injection port is arranged upstream of, or at, the mixing element.
  • the ballast water treatment system comprises a de-ballast line fluidly connected to the ballast tank system and to the main ballast water line at a point upstream the water treatment pipe section (i.e. such that the ballast water will pass through the water treatment pipe section for neutralization of remaining disinfectant before discharge overboard), preferably upstream the ballast water pump.
  • the ballast water treatment system comprises a de-ballast bypass line fluidly connecting the de-ballast line to the main ballast water line downstream the ballast water pump, such that the ballast water may be discharged overboard by use of gravity.
  • the first injection port is fluidly connected to a disinfectant source, preferably the disinfectant source is an electrolytic unit for providing an oxidant disinfectant.
  • electrolytic unit is intended to encompass any unit for electrolytic production of an oxidant disinfectant, i.e. an electrodialysis or electrolysis unit.
  • electrodialysis unit comprises an ion-exchange membrane separating the anode and cathode.
  • the electrolytic unit is an electrodialysis unit.
  • the electrolytic unit is fluidly connected to a seawater storage tank, for instance an aft peak tank, such that sea water stored in the seawater storage tank may be used to generate the oxidant disinfectant. This is particularly advantageous when an oceangoing vessel is in waters having a low salinity.
  • the electrolytic unit is fluidly connected upstream the first injection port, such that a part (commonly up to 3%) of the ballast water from the sea chest or a seawater storage tank (e.g. the aft peak tank) is provided to the electrolytic unit.
  • the water treatment pipe section comprises an outlet port for connection to the electrolytic unit, the outlet port arranged upstream the first injection port.
  • the second injection port is fluidly connected to a disinfectant neutralizer source, preferably an oxidant neutralizer source.
  • the first sampling port and the second sampling port are connected to a monitoring system for measuring an amount/concentration of a disinfectant in a ballast water flow, preferably an amount/concentration of an oxidant disinfectant.
  • the first sampling port and the second sampling port are fluidly connected to the monitoring system, but the first sampling port and the second sampling port may alternatively comprise a sensor/probe for measuring the amount/concentration of the disinfectant.
  • the monitoring system is fluidly connected to the second injection port for return of a fluid stream sampled from the first and/or the second sampling port.
  • the water treatment pipe section is a single pipe element comprising a first end flange and a second end flange.
  • the single pipe element is made up of a single continuous pipe unit.
  • the single pipe element comprises multiple assembled pipe subunits, each pipe subunit comprising at least one of the first sampling port, the second sampling port, the first injection port, the second injection port and the mixing element.
  • the ballast water treatment system comprises a ballast water discharge line fluidly connected to the main ballast water line downstream of the water treatment pipe section.
  • the present invention provides a ballast water treatment pipe element (i.e. a single pipe element made up of a single continuous pipe unit) comprising a first end flange, a second end flange, a first sampling port, a second sampling port, a first injection port for a disinfectant, a second injection port for a disinfectant neutralizer and a mixing element, wherein the first sampling port and the second sampling port is arranged on opposite sides of the mixing element, and the first injection port and the second injection port are arranged such that a disinfectant or a disinfectant neutralizer entering the ballast water treatment pipe element, during use, is mixed with ballast water by the mixing element.
  • a ballast water treatment pipe element i.e. a single pipe element made up of a single continuous pipe unit
  • first injection port and/or the second injection port of the ballast water treatment pipe element may be defined as being arranged in the mixing element, or between the mixing element and the first or the second sampling point.
  • the first injection port is arranged between the first sampling port and the mixing element and the second injection port is arranged between the mixing element and the first sampling port or the second sampling port.
  • the ballast water treatment pipe element comprises a pressure measurement device arranged between the mixing element and the second end flange, and preferably between the second sampling port and the second end flange.
  • the ballast water treatment pipe element may also comprise a further pressure measurement device arranged between the first end flange and the mixing element, such that a differential pressure over the ballast water treatment pipe element may easily be calculated.
  • the ballast water treatment pipe element comprises an outlet port for connection to an inlet of an electrolytic unit, the outlet port arranged between the first end flange and the first injection port (i.e. such that a part of a ballast water flow entering the ballast water treatment pipe may be diverted to an electrolytic unit).
  • the mixing element is a static mixing element comprising inclined vanes, plates or baffles arranged to impart multiple directional changes and divisions to a ballast water flow.
  • the mixing element may in some embodiments comprise the first injection port and/or the second injection port, such that a disinfectant or a disinfectant neutralizer may be injected directly into the mixing element.
  • the present invention provides a method of installing a ballast water treatment system according to the first aspect in a vessel having a main ballast water line, the method comprises the steps of:
  • the method comprises a step of installing a bypass line on the main ballast water line, such that water may be diverted from the main ballast water line and through the bypass line, the bypass line is arranged upstream the ballast water treatment pipe element and comprises a filter unit, such that the ballast water is filtered before being returned to the main ballast water line upstream the ballast water treatment pipe element.
  • the method according to the third aspect may be defined as a method of retrofitting a ballast water treatment system to a vessel having a main ballast water line.
  • Fig. 1 is a schematic drawing of a prior art ballast water treatment system (BWTS).
  • BWTS ballast water treatment system
  • Fig. 2 is a schematic drawing of a first embodiment of a BWTS according to the invention.
  • Fig. 3 is a schematic drawing of a second embodiment of a BWTS according to the invention.
  • Fig. 4 is a drawing of a water treatment pipe element according to the invention.
  • the prior art BWTS in fig. 1 comprises a main ballast water line 1, having a first end 4 and a second end 5, arranged to transfer seawater from the sea chest 8 to the ballast tank system 9.
  • a bypass valve 7 and a ballast water pump 6 are arranged in the main ballast water line.
  • a bypass line 2 is fluidly connected upstream and downstream of the bypass valve 7. During ballasting, the ballast water flow is passed through the bypass line 2.
  • the bypass line 2 comprises, successively in a downstream direction, a filter unit 10, a flow meter 28, a first injection port 13, a second sampling port 12 and a flow control valve 30.
  • electrodialysis unit 18 is fluidly connected to the first injection port 13 for providing an oxidant disinfectant, such as hypochlorite, to the ballast water.
  • an oxidant disinfectant such as hypochlorite
  • the inlet (not shown) of the electrodialysis unit is connected to receive a minor part of the untreated ballast water for producing the required oxidant disinfectant, as described in for instance WO 2008/047084.
  • the second sampling port 12 is connected to the monitoring unit 20 for detecting the total residual oxidant (TRO) in the ballast water.
  • TRO total residual oxidant
  • a de-ballast line 16 is fluidly connected to the ballast water tank system 9 and to the main ballast water line 1 upstream the ballast water pump 6.
  • a gravity bypass line 17 is arranged between the de-ballast line and the main ballast water line downstream the water pump.
  • the valve 7 is open such that the ballast water will bypass the bypass line 2 to reach the ballast water discharge line 21.
  • a second injection port 14 is arranged in the main ballast water line 1 upstream of the bypass line 2. The second injection port is fluidly connected to an oxidant neutralizer source 19.
  • a second sampling port 1 1 is arranged in the main ballast water line and connected to the monitoring system for detecting TRO in the ballast water to be discharged overboard.
  • ballast water discharge line 21 A third sampling port 29 is arranged in the ballast water discharge line 21 to monitor that the discharged ballast water is free of oxidant disinfectant. Due to inefficient mixing of ballast water and oxidant neutralizer, the required pipe length between the second injection port and the third sampling port must in this case be at least 10 meters, preferably 15 meters, to allow for a complete neutralization process to occur.
  • a crossover line 22 is arranged in the main ballast water line upstream the ballast water pump 6.
  • the crossover line may be used for fluidly connecting a second section of the BWTS to the sea chest 8.
  • a first embodiment of a BWTS according to the invention is shown in fig. 2.
  • the BWTS comprises a main ballast water line 1, having a first end 4 and a second end 5, arranged to transfer seawater from the sea chest 8 to the ballast tank system 9.
  • a bypass valve 7 and a ballast water pump are arranged in the main ballast water line.
  • a bypass line 2 having a filter unit 10 is fluidly connected upstream and
  • a flow meter 28 and a pipe section 3 are arranged in the main ballast water line
  • the pipe section 3 comprises, successively in the downstream direction, a first sampling port 11 , a second injection port 14 for a disinfectant neutralizer, a first injection port 13 for a disinfectant, a mixing element 15, a second sampling port 12 and a pressure sensor 27 (i.e. a pressure measurement device, pressure transmitter).
  • the first and the second sampling ports are fluidly connected to the monitoring unit 20 for detecting the total residual oxidant (TRO) in the ballast water.
  • the sampled fluid flow may be returned to the pipe section via the second injection port 14 by the sample discharge line 31.
  • the first injection port 13 is fluidly connected to the electrodialysis unit 18 (i.e.
  • the mixing element 15 may be any element suitable for effective mixing of ballast water with a fluid comprising a disinfectant or a disinfectant neutralizer over a short pipe length.
  • the mixing element is a static mixing element comprising inclined vanes, plates or baffles arranged to impart multiple directional changes and divisions to the fluid flow. Contrary to the prior art system in fig. 1 , wherein a flow control valve 30 is arranged in the bypass line 2, the system in fig. 2 requires a flow control valve 25 mounted in the main ballast line downstream the pipe section 3.
  • the flow control valve 25 is required to control the flow through the pipe section 3. Since the main ballast water line 1 , in which the pipe section 3 and the flow control valve 25 are arranged, is part of an essential system function the flow control valve 25 is a fail open valve. Further, the flow control valve comprises a manual wheel actuation.
  • a flow meter 28 measures the flow of ballast water and is arranged in the main ballast water line downstream the bypass line. After passing the flow meter 28, the ballast water enters the pipe section 3. In the pipe section 3, a disinfectant is injected into the ballast water via the first injection port 13, the disinfectant and the ballast water is thoroughly mixed by the mixing element 15 and the TRO is analysed by sampling via the second sampling port.
  • the mixing element 15 removes the requirements of having long pipe lines after the first injection port.
  • the amount of disinfectant is regulated and/or controlled based on the continuous analysis performed by the monitoring system 20 to ensure that the ballast water comprises an excess of disinfectant.
  • the pressure sensor 27 is arranged in the pipe section downstream the mixing element 15. By monitoring the pressure of the ballast water flow, initial clogging of the mixing element 15 may be detected at an early stage. The treated ballast water is then transferred to the ballast water tank system 9.
  • the ballast water to be discharged will flow through the de- ballast line 16 to the main ballast water line 1.
  • the de-ballasting may be performed by use of gravity, via the de-ballast bypass line 17, or via the ballast water pump 6.
  • the valves 32, 33 are closed and the bypass valve 7 is open such that the ballast water is directed through the main ballast water line without passing through the filter unit 10.
  • the ballast water will pass through the pipe section 3 in the same direction as in the ballasting process.
  • the first sampling port 11 is used to measure the TRO in the ballast water to calculate the amount of oxidant to be neutralized and the second injection port 14 is used to inject an oxidant disinfectant neutralizer (for instance sodium thiosulfate STP).
  • an oxidant disinfectant neutralizer for instance sodium thiosulfate STP.
  • the ballast water and the oxidant disinfectant neutralizer is intimately mixed by the mixing element 15 and the second sampling port is used to measure whether the ballast water has TRO below a given threshold after neutralization.
  • the measurement of the sample from the second sampling port is used to correct the amount of added oxidant disinfectant neutralizer such that the ballast water to be discharged is free of TRO when discharged overboard via the ballast water discharge line 21.
  • a further embodiment of a BWTS according to the invention is shown in fig. 3.
  • the main difference between the systems in fig. 2 and 3 is the arrangement of the pipe section 3 (i.e. the water treatment pipe section).
  • the pipe section 3 i.e. the water treatment pipe section.
  • the flow meter 28, the pipe section 3 and the flow control valve 30 are arranged in the bypass line 2. Since the flow control valve 30 is not arranged in the main ballast water line 1, a fail open flow control valve 25 as shown in fig. 2 is not required.
  • the pipe section 3 is identical to the pipe section described for fig. 2.
  • the system of fig. 3 follows the same basic sequence as described for the system of fig. 2.
  • the ballast water will pass through the bypass line 2.
  • the filter unit 10 is bypassed via the filter bypass line 34 and the ballast water is led through the pipe section 3 for neutralization of TRO as described for fig. 2.
  • the pipe section 3 is a single pipe element comprising a first end flange 23 and a second end flange 24 for connecting the pipe section into the main ballast water line 1.
  • the pipe section 3 in figs. 2 and 3 may also comprise an outlet port (not shown, see ref. 26 in fig. 4) for providing a part of the ballast water flow to the electrodialysis unit.
  • the BWTS of fig. 2 may be considered particularly advantageous in that the arrangement of the pipe section 3 as part of the main ballast water line 1 ensures that bypass line 2 requires a minimum of space. Especially when retrofitting a vessel this arrangement will be highly time and cost efficient.
  • the sampled fluid flow (i.e. a fluid sample which has been analysed in the monitoring unit) is returned to the pipe section via the second injection port 14 by the sample discharge line 31.
  • the sampled fluid flow may be disposed of in any suitable manner, such as being discharged to the bilge or returned to any position in the system being upstream the first and second injection port.
  • the injection ports may comprise at least one injection device, such as a lance or quill, for providing an optimized injection.
  • the injection device may comprise multiple nozzles or outlets for obtaining a fluid injection distributed over the transverse cross-section of the pipe section.
  • the BWTS comprises a number of valves, in addition to the described valves 7, 25, 30, 32 and 33, for controlling the various ballasting and de-ballasting processes.
  • the function and use of all valves are not described as they are considered obvious to the skilled person based on the common general knowledge and the present description.
  • the oxidant disinfectant is an oxidant obtained by electrodialysis of seawater, such as hypochlorite.
  • the present invention is equally suitable for use with other types of oxidants such as ozone, chlorine dioxide and chlorine.
  • the inventive BWTS may use any suitable source of oxidant disinfectant, such as an ozone generator or a storage tank with a preformed oxidant disinfectant.
  • the water treatment pipe section 3 may comprise an outlet port 26, see fig. 4, for connection to the inlet of the electrodialysis unit, the outlet port is arranged upstream the second injection port and is suitable for diverting a fraction (usually up to 3%) of the ballast water to the electrodialysis unit for the production of an oxidant disinfectant.
  • a fraction of the ballast water may be diverted to the electrodialysis unit from any point upstream of the first injection port 13.
  • the mixing element may be any type of element suitable for distributing a disinfectant or a disinfectant neutralizing agent in the water phase entering the water treatment pipe section.
  • suitable mixing elements are disclosed in for instance WO 2009/000642 Al , US 2005/0047274 Al, US 4461579 B, WO 2012/095623 Al and US 2012/0134232 Al .
  • the first injection port and/or the second injection port may be arranged upstream of the mixing element, as shown in figs. 2-4, or they may be arranged at the mixing element. In the latter case the first injection port and/or the second injection port are arranged to provide a disinfectant or a disinfectant neutralizing agent directly into the mixing element, not upstream of the mixing element.
  • the mixing element is equally effective independent of the direction of a fluid flow through the pipe section 3. Consequently, in some embodiments of the system, the second injection port 14 may be arranged on the opposite side of the first injection port 13 relative to the mixing element. In this manner the de-ballasting process may entail passing the ballast water to be discharged through the pipe section in a direction opposite the direction of the ballast water during ballasting.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

La présente invention concerne un système de traitement d'eau de ballast comprenant une conduite d'eau de ballast principale, une conduite de dérivation et une section de tuyau de traitement d'eau, la conduite d'eau de ballast principale comprenant une première extrémité, une seconde extrémité, une pompe à eau de ballast et une soupape de dérivation, la première extrémité est en communication fluidique avec un coffre de bord et la seconde extrémité est en communication fluidique avec un système de réservoir de ballast et la soupape de dérivation est disposée en aval de la pompe à eau de ballast; la conduite de dérivation comprend une unité de filtre et est en communication fluidique en amont et en aval avec la soupape de dérivation; et la section de tuyau de traitement d'eau est disposée en aval de l'unité de filtre et comprend un premier orifice d'échantillonnage, un second orifice d'échantillonnage, un premier orifice d'injection d'un désinfectant, un second orifice d'injection d'un agent de neutralisation de désinfectant et un élément de mélange, le premier orifice d'échantillonnage est disposé en amont de l'élément de mélange, le second orifice d'échantillonnage est disposé en aval de l'élément de mélange, et le premier orifice d'injection et le second orifice d'injection sont disposés de telle sorte qu'un désinfectant ou un agent de neutralisation de désinfectant entrant dans la section de tuyau de traitement d'eau, pendant l'utilisation, est mélangé à l'eau de ballast par l'élément de mélange.
PCT/EP2017/065250 2016-06-22 2017-06-21 Système de traitement d'eau de ballast WO2017220659A1 (fr)

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NO20161047 2016-06-22

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4461579A (en) 1981-07-31 1984-07-24 Statiflo, Inc. Motionless mixer combination
US20050047274A1 (en) 2003-08-26 2005-03-03 Felix Moser Static mixer with polymorphic structure
WO2008047084A2 (fr) 2006-10-20 2008-04-24 Oceansaver As. Procédés et appareil de traitement de liquide
WO2009000642A1 (fr) 2007-06-22 2008-12-31 Sulzer Chemtech Ag Élément de mélange statique
WO2009060813A1 (fr) 2007-11-08 2009-05-14 Hitachi Plant Technologies, Ltd. Système de traitement d'eau de ballast
US20120134232A1 (en) 2006-02-07 2012-05-31 Stamixco Technology Ag Mixing Element for a static mixer and process for producing such a mixing element
WO2012095623A1 (fr) 2011-01-15 2012-07-19 Statiflo International Limited Ensemble mélangeur statique
WO2012098059A1 (fr) 2011-01-17 2012-07-26 Oceansaver As Unité d'électrodialyse de traitement de l'eau
KR20150065462A (ko) * 2013-12-05 2015-06-15 현대중공업 주식회사 선박 평형수 처리장치

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4461579A (en) 1981-07-31 1984-07-24 Statiflo, Inc. Motionless mixer combination
US20050047274A1 (en) 2003-08-26 2005-03-03 Felix Moser Static mixer with polymorphic structure
US20120134232A1 (en) 2006-02-07 2012-05-31 Stamixco Technology Ag Mixing Element for a static mixer and process for producing such a mixing element
WO2008047084A2 (fr) 2006-10-20 2008-04-24 Oceansaver As. Procédés et appareil de traitement de liquide
WO2009000642A1 (fr) 2007-06-22 2008-12-31 Sulzer Chemtech Ag Élément de mélange statique
WO2009060813A1 (fr) 2007-11-08 2009-05-14 Hitachi Plant Technologies, Ltd. Système de traitement d'eau de ballast
WO2012095623A1 (fr) 2011-01-15 2012-07-19 Statiflo International Limited Ensemble mélangeur statique
WO2012098059A1 (fr) 2011-01-17 2012-07-26 Oceansaver As Unité d'électrodialyse de traitement de l'eau
KR20150065462A (ko) * 2013-12-05 2015-06-15 현대중공업 주식회사 선박 평형수 처리장치

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TAE WON KIM ET AL: "Ecotoxicological effects of ballast water effluent teated by an electrolytic method on marine environment", JOURNAL OF THE KOREAN SOCIETY OF MARINE ENGINEERING, vol. 38, no. 8, 31 October 2014 (2014-10-31), pages 1010 - 1020, XP055396142, ISSN: 2234-7925, DOI: 10.5916/jkosme.2014.38.8.1010 *

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