KR20170109313A - System for Vessel Ballast Water Treatment - Google Patents

System for Vessel Ballast Water Treatment Download PDF

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Publication number
KR20170109313A
KR20170109313A KR1020160033262A KR20160033262A KR20170109313A KR 20170109313 A KR20170109313 A KR 20170109313A KR 1020160033262 A KR1020160033262 A KR 1020160033262A KR 20160033262 A KR20160033262 A KR 20160033262A KR 20170109313 A KR20170109313 A KR 20170109313A
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ballast water
salt
water
sodium thiosulfate
ballast
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KR1020160033262A
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Korean (ko)
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이현우
김양규
정길주
이태진
한기훈
주지용
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현대중공업 주식회사
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Publication of KR20170109313A publication Critical patent/KR20170109313A/en

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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B13/00—Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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

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

Abstract

The present invention relates to a system to treat vessel ballast water, which reduces a use volume of a counteractive agent which is put to neutralize remaining active materials of ballast water when the ballast water in a ballast water tank is discharged to the sea. According to the present invention, the system to treat vessel ballast water, which is to neutralize remaining active materials of the ballast water, comprises: a ballast water tank which discharges stored ballast water; and a neutralizing apparatus which mixes sodium thiosulfate, which is a counteractive agent, with salt, which is to supplement alkaline degree, at a certain equivalence ratio and stores the mixture in its own tank to put the sodium thiosulfate and salt into the ballast water when neutralizing the ballast water discharged from the ballast water tank. According to the present invention, the present invention is able to, when using seawater as ballast water after sterilizing the seawater and storing the seawater in a ballast water tank and discharging the ballast water in the ballast water tank to the sea, reduce a use volume of a counteractive agent, which is put to neutralize remaining active materials of the ballast water and to make the neutralization process in case of discharging the ballast water more economically efficient.

Description

{System for Vessel Ballast Water Treatment}

The present invention relates to a ship ballast water treatment system for treating ballast water used for maintaining balance of a ship in a ship, and more particularly to a ship ballast water treatment system for sterilizing seawater by means of an active material, It is economical to perform the neutralization treatment at the discharge of ballast water by reducing the consumption of neutralizing agent to neutralize the residual active material of ballast water when the ballast water of the ballast tank is discharged to the ocean by storing and using it as ballast water To a ship ballast water treatment system.

In general, in order to maintain the balance of the ship when operating the ship, the seawater is stored as ballast water in the ballast tank of the ship, the ballast water is filled in the ballast tank according to the shipment condition of the cargo, .

Since vessels navigate the oceans and navigate to various destinations, there is a risk of contamination of the oceans by marine organisms contained in the equilibrium.

In accordance with the International Maritime Organization (IMO) Convention, which is expected to enter into force in 2017, all vessels must comply with facilities for sterilizing microorganisms in ballast water.

According to IMO MEPC resolution G9, ships which sterilize seawater by using active materials such as electrolysis method, ozone generation method, and disinfectant input method and store it in ballast tanks and use them as ballast water, Is discharged to the ocean, neutralization agent is used to neutralize the residual active material of the ballast water in order to protect the marine environment.

Sodium thiosulfate, sodium bisulfite, sodium metabisulfite, etc., as a neutralizing agent for neutralizing the residual active material of the ballast water when discharging the ballast water stored in the ballast tank of the ship to the ocean, And sodium sulfite have been used as a neutralizing agent.

Of these various types of neutralizing agents, sodium thiosulfate is mainly used because it is easily stored in a narrow space due to the characteristics of a ship ballast water treatment system installed on a ship, has a high solubility, and is excellent in stability when exposed to the outside do.

When sodium thiosulfate is added to the ballast water discharged from the ballast tank to neutralize the residual active material, the consumed amount is changed according to the water quality of the ballast water to be input. Especially, when the fresh water or fresh water of the low alkalinity region The consumption of sodium thiosulfate should be increased.

Most ship ballast water treatment systems that use active materials to sterilize ballast water use sodium thiosulfate as input to set the amount of sodium thiosulfate to match fresh water / area where sodium thiosulfate consumption is high, The operation cost of the ballast water treatment system is increased due to the addition of sodium thiosulfate, which is a neutralizing agent, in order to neutralize the residual active substances in the discharged ballast water, resulting in an economical problem.

The present invention has been proposed in order to overcome the problems of the prior art as described above. The present invention disinfects seawater by an active material, stores it in a ballast tank of a ship, and uses the ballast water as a ballast water, And an object of the present invention is to provide a ship ballast water treatment system which can reduce the consumption amount of a neutralizing agent to neutralize the residual active material of the ballast water during discharging, thereby enabling the neutralization treatment at the discharge of ballast water economically.

In order to achieve the above object, according to a first aspect of the present invention, there is provided a ship ballast water treatment system for neutralizing residual active material of a ballast water, comprising: a ballast tank for discharging stored ballast water; The sodium thiosulfate neutralizing agent and the salt for supplementing alkaline are mixed and stored in the tank at a constant equivalent ratio and the sodium thiosulfate and the salt are added to the tank during neutralization treatment of the equilibrium water discharged from the ballast tank. And a neutralizing device for supplying the ballast water to the ballast water together.

According to a second embodiment of the present invention, there is provided a ship ballast water treatment system for neutralizing a residual active material of a ballast water, comprising: a ballast water treatment system for neutralizing the residual active material of the ballast water, And a control device for controlling the amount of salt added to supplement the alkalinity by the alkaline water replenishing device so as to control an input equivalent ratio of the sodium thiosulfate to the salt; An alkaline water replenishing device for storing a salt for replenishing alkalinity in its own tank and adjusting the amount of salt in accordance with the control of the control device to enter the equilibrium water discharged from the ballast water tank; And a neutralization device for storing sodium thiosulfate in its own tank and adjusting the amount of sodium thiosulfate in accordance with the control of the control device to feed the ballast water into the discharged ballast water.

In the ship ballast water treatment system according to the second embodiment of the present invention, after salt is first introduced into the ballast water discharged from the ballast water tank by the alkaline replenishing device, the ballast water is supplied to the neutralization apparatus To which sodium thiosulfate is added.

According to the ship ballast water treatment system of the present invention, the salt is a chemical species that dissociates into water and directly neutralizes OH ions by neutralizing it, or a chemical species that dissociates into water and absorbs H + ions Is a conjugate of weak acid corresponding to.

According to the ship ballast water treatment system of the present invention, the chemical species dissociated into water and directly neutralizing OH ions to neutralize H + ions are one of NaOH, KOH, LiOH and Mg (OH) 2 .

According to the present invention, the complex salt of the weak acid is any one of carbonate, phosphate, borate, citrate, and ammonia.

Further, according to the present invention, the carbonate salt can be Na 2 CO 3 , K 2 CO 3 , NaHCO 3 And KHCO 3 , wherein the phosphate is any one of Na 3 PO 4 , K 3 PO 4 , Na 2 HPO 4 , K 2 HPO 4 , MgHPO 4 and CaHPO 4 , and the borate is Na 3 BO 3 , K 3 BO 3 , Ca 3 (BO 3 ) 2 , Mg 3 (BO 3 ) 2 , Na 2 HBO 3 , K 2 HBO 3 , CaHBO 3 , MgHBO 3 , NaH 2 BO 3 and KH 2 NO 3 , Wherein the citrate is selected from Na 3 C 6 H 5 O 7 , K 3 C 6 H 5 O 7 , Na 2 HC 6 H 5 O 7 , K 2 HC 6 H 5 O 7 , NaH 2 C 6 H 5 O 7 , and KH 2 C 6 H 5 O 7 .

According to the present invention, when the seawater is sterilized and stored in the ballast water tank of the ship for use as ballast water, and the ballast water of the ballast tank is discharged to the ocean, the neutralizing agent By reducing the amount of consumption, the neutralization treatment at the discharge of the ballast water can be performed economically.

1 is a diagram illustrating a ship ballast water treatment system according to a first embodiment of the present invention.
2 is a diagram illustrating a ship ballast water treatment system according to a second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Although the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that the present invention is not limited to the technical spirit and essential structure and operation of the present invention.

In the case of neutralizing the active substance by adding sodium thiosulfate (Na 2 S 2 O 3 ), which is a neutralizing agent, to the ballast water in which the active substance, HOCl, remains, the neutralization reaction formula is as follows.

Neutralization reaction of sodium thiosulfate: Na 2 S 2 O 3 + 4HOCl + H 2 O → 2NaHSO 4 + 4HCl

At this time, hydrochloric acid (HCl) produced as a by-product consumes sodium thiosulfate while modifying a part of sodium thiosulfate to sulfur (S), as in the following reaction scheme of hydrogen chloride and sodium thiosulfate.

Hydrogen chloride and sodium thiosulfate Reaction: Na 2 S 2 O 3 + 2HCl → 2 NaCl + S + SO 2 + H 2 O

Thus, the consumption of sodium thiosulfate to neutralize and remove active substances (for example, HOCl, Cl 2 , O 3 and the like) is increased. This is because hydrochloric acid (HCl) produced during neutralization of the active substance by sodium thiosulfate It is closely related.

Accordingly, in the case of neutralizing the active material of the equilibrium water discharged from the ballast water tank into the ocean by sodium thiosulfate, a material for buffering and reducing hydrochloric acid (HCl) generated in the neutralization reaction of the active material Is added together with sodium thiosulfate to reduce the consumption of neutralizing agent.

To this end, the present invention relates to a method for neutralizing an active material of a ballast water discharged from a ballast water tank into the sea by neutralizing it with sodium thiosulfate, thereby preparing a salt capable of buffering hydrochloric acid (HCl) by supplementing alkalinity, Is added together with sodium thiosulfate as a neutralizing agent to reduce the consumption of the neutralizing agent.

Since the salt which supplements the alkalinity is relatively light in weight and is inexpensive, when sodium thiosulfate is injected into the ballast water to be discharged to neutralize the active material of the equilibrium water, the salt is added together with the sodium thiosulfate, The consumed amount of sodium thiosulfate can be reduced, and the cost required for the neutralization treatment operation of the ship ballast water treatment system can be reduced.

As a salt capable of buffering the hydrochloric acid (HCl) in such a manner as to complement the alkalinity, a chemical species dissociating in water and neutralizing with H + ions by directly releasing OH- ions is applied, or a salt dissociated into H + ions Of the weak acid corresponding to the species absorbing the acid.

Examples of the chemical species that dissociate into water and neutralize H + ions by directly releasing OH- ions include NaOH, KOH, LiOH, and Mg (OH) 2 , and dissociated into water to absorb H + As a conjugate salt of a weak acid corresponding to the chemical species, for example, one of carbonates, phosphates, borates, citrates, and ammonia can be applied.

Na 2 CO 3 , K 2 CO 3 , NaHCO 3 , KHCO 3 and the like are applied as the carbonate and Na 3 PO 4 , K 3 PO 4 , Na 2 HPO 4 and K 2 HPO 4, as the MgHPO 4, applying such CaHPO 4, and borate salts, for example, Na 3 BO 3, K 3 BO 3, Ca 3 (BO 3) 2, Mg 3 (BO 3) 2, Na 2 HBO 3, K 2 HBO 3 , CaHBO 3 , MgHBO 3 , NaH 2 BO 3 , KH 2 NO 3 and the like are applied. As the citrate, for example, Na 3 C 6 H 5 O 7 , K 3 C 6 H 5 O 7 , Na 2 HC 6 H 5 O 7 , K 2 HC 6 H 5 O 7 , NaH 2 C 6 H 5 O 7 , and KH 2 C 6 H 5 O 7 .

In addition, when neutralizing the residual active material of the ballast water, the above-mentioned salt to be added together with sodium thiosulfate as a neutralizing agent can be added in various forms such as tablets, powders, and solutions. have.

When the active material of the equilibrium water discharged from the equilibrium water tank to the ocean is neutralized and removed by sodium thiosulfate, a salt capable of buffering the hydrochloric acid (HCl) by supplementing the alkalinity is added to the neutral sodium thiosulfate The ship ballast water treatment system 100 according to the first embodiment of the present invention for injecting a neutralizing agent into the ballast water discharged from the ballast water tank 120 as illustrated in FIG. Sodium thiosulfate is added and a salt for supplementing alkalinity is added to neutralize the active material remaining in the ballast water discharged from the ballast water tank 120.

The neutralization apparatus 110 mixes sodium thiosulfate, which is a neutralizing agent, with a salt for supplementing alkalinity, and stores the sodium thiosulfate and the salt in a predetermined ratio of equivalence ratio. The neutralization apparatus 110 stores the sodium thiosulfate and the salt Are introduced together through the inlet pipe (P2).

As a salt to be stored together with sodium thiosulfate serving as a neutralizing agent in the neutralization apparatus 110, a chemical species that dissociates into water and directly neutralizes OH ions to neutralize H + ions, or dissociates into H + ions As a chemical species that dissociates in water and releases OH ions directly and neutralizes with H + ions, for example, NaOH, KOH, LiOH, Mg (OH) 2, etc., and one of the carbonate salts, phosphate salts, borate salts, citrate salts and ammonia may be used as a complex salt of a weak acid corresponding to a chemical species which is dissociated into water and absorbs H + ions , Na 2 CO 3 , K 2 CO 3 , NaHCO 3 and KHCO 3 as the carbonate and Na 3 PO 4 , K 3 PO 4 , Na 2 HPO 4 and K 2 HPO 4 as the phosphate, , MgHPO 4 , CaHPO 4 , and the like, Examples of the borate include Na 3 BO 3 , K 3 BO 3 , Ca 3 (BO 3 ) 2 , Mg 3 (BO 3 ) 2 , Na 2 HBO 3 , K 2 HBO 3 , CaHBO 3 , MgHBO 3 , NaH 2 BO 3 , KH 2 NO 3 and the like are applied, and examples of the citrate salt include Na 3 C 6 H 5 O 7 , K 3 C 6 H 5 O 7 , Na 2 HC 6 H 5 O 7 , K 2 HC 6 H 5 O 7 , NaH 2 C 6 H 5 O 7 , and KH 2 C 6 H 5 O 7 . The salt stored in the neutralization apparatus 110 may be stored in various forms such as tablets, powders, and solutions together with sodium thiosulfate.

The neutralization apparatus 110 discharges the sodium thiosulfate stored in its own tank and the salt through the input pipe P2 when the ballast water storing the ballast water tank 120 is discharged to the ocean through the discharge pipe P1 The salt is added to the pipeline P1 to be discharged along with the sodium thiosulfate to the ballast water discharged through the discharge pipe P1 to neutralize the active substance remaining in the ballast water and to neutralize the active substance by the sodium thiosulfate The consumption of sodium thiosulfate is reduced by buffering and reducing the hydrochloric acid (HCl) produced in the reaction by the salt.

Since the ballast water treatment system 100 according to the first embodiment of the present invention injects sodium thiosulfate and salt into the discharge equilibrium water at a certain equivalent ratio, when the ballast water is neutralized in a ship operating in a specific region This is very useful.

2, the control system 230 controls the operation of the ballast water treatment system 200 according to the second embodiment of the present invention, as shown in FIG. 2, in response to the alkalinity of the ballast water discharged from the ballast water tank 240, The amount of salt to be added by the alkaline replenishing device 220 and the equivalent amount of the sodium thiosulfate which is the neutralizer introduced by the neutralization device 210 are adjusted and supplied by adjusting the equivalence ratio of sodium sulfate and salt, , The equivalence ratio of sodium thiosulfate to salt is adjusted in accordance with the alkalinity of the equilibrium water, and the mixture is supplied to the discharge equilibrium water to reduce the consumption amount of sodium thiosulfate during the ballast water neutralization treatment.

The controller 230 controls the amount of sodium thiosulfate to be supplied to the alkaline water replenishing device 220 and the amount of sodium thiosulfate to be supplied to the alkaline water replenishing device 220 in accordance with the degree of alkalinity of the ballast water discharged from the ballast water tank 240 through the discharge pipe P11. The amount of sodium thiosulfate neutralizing agent is reduced by controlling the equivalence ratio of sodium thiosulfate and salt added to the equilibrium water in accordance with the degree of alkalinity of the equilibrium water by controlling the equivalence ratio of the salt for supplementing the alkalinity with the equilibrium water.

The controller 230 receives the alkalinity measurement information indicating the alkalinity of the ballast water discharged from the ballast water tank 240 and confirms the alkalinity of the ballast water based on the corresponding alkalinity measurement information. The alkalinity of the equilibrium water can be confirmed by receiving input or inputting the alkalinity measurement information from the alkalinity measuring device.

When the alkalinity of the ballast water is checked, the control device 230 adjusts the input dose of the salt for supplementing the alkalinity with the alkalinity replenishing device 220 and the input equivalent of the sodium thiosulfate as the neutralizer by the neutralizer 210, Corresponding to the degree of alkalinity, the equivalent ratio of sodium thiosulfate to salt is adjusted and added to the equilibrium water.

The alkaline water replenishing device 220 stores a salt for supplementing alkalinity into its own tank and puts the stored salt into the ballast water through the input pipe P13. salt) is adjusted to the equivalent amount. The alkaline water replenishing device 220 includes an inlet regulator for regulating the equivalence of the salt introduced into the inlet pipe P13 in order to regulate the equivalence of the salt introduced through the inlet pipe P13 under the control of the controller 230 (Not shown).

As a salt to be stored in the own tank of the alkaline replenishing device 220, a chemical species that dissociates into water and directly neutralizes OH ions by neutralizing with H + ions is applied, or a chemical species that dissociates into water and absorbs H + ions (NaOH, KOH, LiOH, Mg (OH) 2, etc.) as described above can be used as the chemical species that dissociates in water and directly releases OH- ions and neutralizes with H + ions As a complex salt of a weak acid corresponding to a chemical species which is dissociated into water and absorbs H + ions, one of carbonates, phosphates, borates, citrates, and ammonia is applied as described above. Examples of carbonates include Na 2 CO 3 , K 2 CO 3 , NaHCO 3 , KHCO 3 and the like are applied. As the phosphate, for example, Na 3 PO 4 , K 3 PO 4 , Na 2 HPO 4 , K 2 HPO 4 , MgHPO 4 , CaHPO 4 , and the like. As the borate, for example, Na 3 BO 3 , K 3 BO 3 , Ca 3 (BO 3 ) 2 , Mg 3 (BO 3 ) 2 , Na 2 HBO 3 , K 2 HBO 3 , CaHBO 3 , MgHBO 3 , NaH 2 BO 3 , KH 2 NO 3 , and the like. Examples of the citrate salt include Na 3 C 6 H 5 O 7 , K 3 C 6 H 5 O 7 , Na 2 HC 6 H 5 O 7 , K 2 HC 6 H 5 O 7 , NaH 2 C 6 H 5 O 7 , and KH 2 C 6 H 5 O 7 . As described above, the salt stored in the alkalinity replenishing device 220 can be stored in various forms such as tablets, powders, and solutions.

The neutralization apparatus 210 stores sodium thiosulfate as a neutralizing agent in its own tank and puts the stored sodium thiosulfate into the equilibrium water through the inlet pipe P12. Under the control of the controller 230, sodium thiosulfate Adjust it. The neutralizer 210 is controlled by the controller 230 to regulate the equivalent amount of the thiosulfate to be supplied through the inlet pipe P12. The neutralizer 210 controls the amount of sodium thiosulfate added to the inlet pipe P12, (Not shown in the figure).

The sodium thiosulfate stored in the neutralizer 210 may be stored in various forms such as tablets, powders, and solutions.

In addition, the ship ballast water treatment system 200 includes a neutralizer 210 for supplying sodium thiosulfate, which is a neutralizing agent, and a salt for replenishing the alkalinity by the alkaline island replenishing device 220, When the residual active material is neutralized, the salt is first added to the equilibrium water from the ballast water tank 240 by the alkaline water replenishing device 220, and then the neutralized water is added to the equilibrium water into which the salt is added, .

The control device 230 receives the alkalinity measurement information that measures the alkalinity of the ballast water discharged from the ballast water tank 240, and confirms the alkalinity of the ballast water based on the corresponding alkalinity measurement information.

The controller 230 determines the alkalinity of the ballast water by applying a control signal to the alkaline replenishing device 220 and the neutralizing device 210 to determine the amount of the salt added for supplementing the alkalinity by the alkaline replenishing device 220, The equivalence ratio of the sodium thiosulfate to the salt is adjusted according to the alkalinity of the equilibrium water by adjusting the equivalent weight of the sodium thiosulfate, which is a neutralizing agent,

The alkaline water replenishing device 220 is charged with salt for replenishing the alkalinity to the ballast water of the discharge pipe P11 through the input pipe P13 under the control of the controller 230, The amount of salt introduced through the input pipe P13 is controlled.

The neutralizer 210 is supplied with sodium thiosulfate which is a neutralizing agent into the ballast water of the discharge pipe P11 through the charging pipe P12 under the control of the controller 230 and is charged The amount of sodium thiosulfate added through the pipe P12 is controlled.

The salt is introduced into the equilibrium water discharged through the discharge pipe P11 by the alkaline replenishing device 220 and the sodium thiosulfate serving as the neutralizing agent is supplied to the equilibrium water of the discharge pipe P11 When the residual active material in the ballast water is neutralized by the addition, the hydrochloride (HCl) generated in the neutralization reaction of the active substance by the sodium thiosulfate is buffered by the salt to reduce the consumption amount of the sodium thiosulfate neutralizer .

The ship water ballast water treatment system 200 according to the second embodiment of the present invention neutralizes the residual active material of the ballast water by adjusting the equivalent ratio of sodium thiosulfate and salt to the equilibrium water in accordance with the alkalinity of the ballast water , And it is very useful for neutralization of ballast water in ships operating in various waters having various alkaline conditions.

As described above, according to the present invention, the sea water is sterilized and stored in the ballast water tank of the ship for use as ballast water, and when discharging the ballast water of the ballast tank to the ocean, sodium thiosulfate as a neutralizing agent is added to the ballast water, The sodium thiosulfate and the salt are put into the equilibrium water together with the neutralization treatment so that hydrochloric acid (HCl) generated in the neutralization reaction of the active substance by the sodium thiosulfate is added to the salt And thus the consumption of sodium thiosulfate as a neutralizing agent can be reduced, which is very economical.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. And that such modifications are within the technical scope of the present invention.

The present invention can be very usefully applied to neutralization of residual active materials of ballast water in ships. According to the present invention, when the seawater is sterilized and stored in the ballast water tank of the ship for use as ballast water, and the ballast water of the ballast tank is discharged to the ocean, the neutralizing agent By reducing the amount of consumption, the neutralization treatment at the discharge of the ballast water can be performed economically.

100, 200; Ship ballast water treatment system
110, 210; Neutralizing device
120, 240; Ballast tank
220; Alkaline replenishing device
230; Control device
P1, P11; Discharge piping
P2, P12, P13; Input piping

Claims (17)

A ship ballast water treatment system for neutralizing a residual active material of a ballast water,
A ballast water tank for discharging the stored ballast water;
The sodium thiosulfate neutralizing agent and the salt for supplementing alkaline are mixed and stored in the tank at a constant equivalent ratio and the sodium thiosulfate and the salt are added to the tank during neutralization treatment of the equilibrium water discharged from the ballast tank. And a neutralizing device for introducing the neutralized water into the ballast water together.
The method according to claim 1,
Characterized in that the salt is a chemical species dissociated into water and directly neutralizing H + ions by releasing OH ions, or a complex salt of a weak acid corresponding to a chemical species dissociated into water and absorbing H + ions, Processing system.
3. The method of claim 2,
Wherein the chemical species that dissociate into water and directly neutralize OH ions to neutralize H + ions are one of NaOH, KOH, LiOH, and Mg (OH) 2 .
3. The method of claim 2,
Wherein the complex salt of the weak acid is any one of carbonates, phosphates, borates, citrates, and ammonia.
5. The method of claim 4,
The carbonate may be Na 2 CO 3 , K 2 CO 3 , NaHCO 3 KHCO 3, and ballast water treatment system according to claim any one of the.
5. The method of claim 4,
Wherein the phosphate is any one of Na 3 PO 4 , K 3 PO 4 , Na 2 HPO 4 , K 2 HPO 4 , MgHPO 4 and CaHPO 4 .
5. The method of claim 4,
Wherein the borate is selected from the group consisting of Na 3 BO 3 , K 3 BO 3 , Ca 3 (BO 3 ) 2 , Mg 3 (BO 3 ) 2 , Na 2 HBO 3 , K 2 HBO 3 , CaHBO 3 , MgHBO 3 , NaH 2 BO 3 , KH 2 < / RTI > NO < RTI ID = 0.0 > 3. & Lt; / RTI >
5. The method of claim 4,
Wherein the citrate is selected from Na 3 C 6 H 5 O 7 , K 3 C 6 H 5 O 7 , Na 2 HC 6 H 5 O 7 , K 2 HC 6 H 5 O 7 , NaH 2 C 6 H 5 O 7 , and KH 2 C 6 H 5 O 7 .
A ship ballast water treatment system for neutralizing a residual active material of a ballast water,
A control device for controlling the equivalent weight of the sodium thiosulfate and the salt by controlling the equivalent weight of the sodium thiosulfate as a neutralizer by the neutralizer in response to the alkalinity of the ballast water and the salt equivalent of the salt for supplementing the alkalinity with the alkaline refiller Wow;
An alkaline water replenishing device for storing a salt for replenishing alkalinity in its own tank and adjusting the amount of salt in accordance with the control of the control device to enter the equilibrium water discharged from the ballast water tank;
And a neutralizing device for storing sodium thiosulfate in its own tank and controlling the equivalent of sodium thiosulfate under the control of said control device to feed said ballast water into said discharged ballast water.
10. The method of claim 9,
Wherein a salt is introduced into the ballast water discharged from the ballast tank first by the alkaline replenishing device, and then sodium thiosulfate is fed into the ballast into which the salt is introduced by the neutralization device.
11. The method according to claim 9 or 10,
Characterized in that the salt is a chemical species dissociated into water and directly neutralizing H + ions by releasing OH ions, or a complex salt of a weak acid corresponding to a chemical species dissociated into water and absorbing H + ions, Processing system.
12. The method of claim 11,
Wherein the chemical species that dissociate into water and directly neutralize OH ions to neutralize H + ions are one of NaOH, KOH, LiOH, and Mg (OH) 2 .
12. The method of claim 11,
Wherein the complex salt of the weak acid is any one of carbonates, phosphates, borates, citrates, and ammonia.
14. The method of claim 13,
The carbonate may be Na 2 CO 3 , K 2 CO 3 , NaHCO 3 KHCO 3, and ballast water treatment system according to claim any one of the.
14. The method of claim 13,
Wherein the phosphate is any one of Na 3 PO 4 , K 3 PO 4 , Na 2 HPO 4 , K 2 HPO 4 , MgHPO 4 and CaHPO 4 .
14. The method of claim 13,
Wherein the borate is selected from the group consisting of Na 3 BO 3 , K 3 BO 3 , Ca 3 (BO 3 ) 2 , Mg 3 (BO 3 ) 2 , Na 2 HBO 3 , K 2 HBO 3 , CaHBO 3 , MgHBO 3 , NaH 2 BO 3 , KH 2 < / RTI > NO < RTI ID = 0.0 > 3. & Lt; / RTI >
14. The method of claim 13,
Wherein the citrate is selected from Na 3 C 6 H 5 O 7 , K 3 C 6 H 5 O 7 , Na 2 HC 6 H 5 O 7 , K 2 HC 6 H 5 O 7 , NaH 2 C 6 H 5 O 7 , and KH 2 C 6 H 5 O 7 .
KR1020160033262A 2016-03-21 2016-03-21 System for Vessel Ballast Water Treatment KR20170109313A (en)

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