WO2012176600A1 - 液中の水生生物殺滅方法、バラスト水中の水生生物殺滅方法及び装置 - Google Patents
液中の水生生物殺滅方法、バラスト水中の水生生物殺滅方法及び装置 Download PDFInfo
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- WO2012176600A1 WO2012176600A1 PCT/JP2012/064120 JP2012064120W WO2012176600A1 WO 2012176600 A1 WO2012176600 A1 WO 2012176600A1 JP 2012064120 W JP2012064120 W JP 2012064120W WO 2012176600 A1 WO2012176600 A1 WO 2012176600A1
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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
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
- B01F23/2323—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/32—Injector mixers wherein the additional components are added in a by-pass of the main flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
- B01F25/4337—Mixers with a diverging-converging cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
- B01F25/452—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces
- B01F25/4521—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces the components being pressed through orifices in elements, e.g. flat plates or cylinders, which obstruct the whole diameter of the tube
-
- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
- B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
- B01F23/23761—Aerating, i.e. introducing oxygen containing gas in liquids
- B01F23/237613—Ozone
-
- 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
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
-
- 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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
Definitions
- the present invention relates to a method for killing aquatic organisms in liquid, a method for killing aquatic organisms in ballast water, and more particularly to killing aquatic organisms in liquid that can significantly reduce ozone consumption when treating ballast water.
- the present invention relates to a method and an apparatus for killing aquatic organisms in ballast water.
- Patent Document 1 is a device that generates nano bubbles in water or an aqueous solution in which oxygen is dissolved, and includes a beta ray irradiation unit that generates OH radicals, and a nano bubble generation unit that can inject high-pressure water,
- a nanobubble generator characterized in that OH radicals exist at the interface of the nanobubbles is disclosed.
- a beta ray irradiation apparatus is used to generate OH radicals, but the beta ray irradiation apparatus has a drawback of high cost.
- the present invention has been made in view of the above problems, and is a method for killing aquatic organisms in liquid and ballast water that can kill aquatic organisms in liquid or ballast water at a low cost. And providing an apparatus.
- the aquatic organism killing in the ballast water is characterized in that the OH radical generated by dissolving and decomposing in the ballast water is brought into contact with the aquatic organism in the ballast water in the pipe to kill the aquatic
- a ballast pump that pumps up ballast water containing aquatic organisms and delivers it to the ballast tank via piping;
- a branch pipe that branches a part of the ballast water at a branch section on the upstream side of the pipe and returns it to the merge section on the downstream side of the pipe;
- An ozone mixing part provided in the middle of the branch pipe, for mixing ozone with a part of the ballast water;
- a microbubble production unit that generates bubbles containing ozone released into ballast water in the pipe after the merging unit to form microbubbles in the range of 4 to 100 ⁇ m;
- the microbubbles generated in the microbubble production unit are forcibly crushed, and OH radicals are generated by crushing the microbubbles themselves by the forced crushing, and ozone contained in the microbubbles is ballasted by the crushing of the microbubbles.
- An OH radical generator that generates OH radicals by dissolving and decomposing in OH radicals generated in the OH radical generator, OH radicals generated by the self-crushing of the microbubbles themselves in the ballast water in the pipe, and ozone contained in the microbubbles dissolved in the ballast water by the self-crushing
- An aquatic organism killing apparatus in ballast water wherein OH radicals generated by decomposition are brought into contact with aquatic organisms in the ballast water in the pipe to kill the aquatic organisms.
- the OH radical generating part is composed of a bulging part of a pipe connected to the downstream end side of the pipe and a plate with a hole, and the ballast water is at least pressurized in the bulging part, and the hole is provided.
- the microbubbles are forcibly crushed when passing through the plate to generate OH radicals, and the ozone contained in the microbubbles is dissolved in the ballast water and decomposed by the forced crushing to generate OH radicals. 4.
- an aquatic organism killing method in liquid and an aquatic organism killing method and apparatus in ballast water that can kill aquatic organisms in the liquid or ballast water at low cost.
- the block diagram which shows an example of the aquatic organism killing device in the ballast water based on this invention
- the method for killing aquatic organisms in a liquid according to the present invention includes a first step of generating bubbles containing ozone released into a liquid in a pipe so as to be microbubbles in a range of 4 to 100 ⁇ m; The second step of forcibly crushing the microbubbles generated in one step and generating OH radicals by the forcible crushing, and the ozone contained in the microbubbles dissolved and decomposed in the liquid by the forcible crushing of the microbubbles And a third step of generating OH radicals.
- the liquid in the pipe in the first step refers to the water in the pipe when the liquid such as the water pumped up by the pump is transferred through the pipe.
- the seawater is transferred to the ballast tank.
- the seawater in the pipe this seawater normally exhibits a ballast function in the ballast tank. (Referred to as water).
- the first step includes a step of releasing bubbles containing ozone into the liquid in the pipe.
- ozone may be directly supplied to the piping for transferring the ballast water.
- ozone may be directly supplied to the piping for transferring the ballast water.
- a bypass pipe to the pipe for transferring ballast water
- to provide a gas-liquid mixer in the branch pipe to make bubbles containing ozone in the gas-liquid mixer, and to discharge to ballast water Is preferred.
- the ozone injection amount be in the range of 2.5 to 3.5 mg / L in the ballast water in the ballast line after re-merging.
- bubbles containing ozone are discharged into the liquid in the pipe, but also bubbles containing ozone released into the ballast water, for example, into the liquid in the pipe are microbubbles in the range of 4 to 100 ⁇ m. To be generated.
- the means for generating the bubbles so as to become microbubbles is not particularly limited, but using a static mixer or the like, ozone with pressure applied in the liquid is bubbled to obtain a microbubble in the range of 4 to 100 ⁇ m. Can be generated into a bubble. Under these conditions, some of the microbubbles undergo self-collapse, and OH radicals are generated by the collapse of the microbubbles at that time. Furthermore, OH radicals are also generated when ozone contained in the microbubbles is dissolved and decomposed in the liquid.
- the microbubbles generated in the first step are forcibly crushed, and OH radicals are generated by the forcible crushing.
- a 3rd process produces
- Forming refers to forcibly causing the self-crushing function of microbubbles to break bubbles and generate OH radicals.
- Forced crushing involves impacts when the microbubbles generated in the first step are passed through a punching plate or a slit plate arranged to block the pipe flow and a collision with a collision plate arranged behind the slit plate. It is the physicochemical action of microbubbles caused by the impact of the. Bubbles collapse due to this forced crushing, but OH radicals are generated by the collapse of the bubbles (second step), and when ozone contained in the bubbles is dissolved and decomposed in the liquid, OH radicals are also generated. Radicals are generated (third step).
- OH radical is one of free radicals, and free radicals are atoms and molecules having an unpaired electron pair and are generally extremely reactive. By utilizing this OH radical, it is possible to decompose various organic substances present in the aqueous solution.
- a method of generating microbubbles in water and circulating them through a punching plate or the like is also preferable. Since the hole diameter of the punching plate is not so small, it does not require much power for flow.
- the method for killing aquatic organisms in a liquid according to the present invention includes OH radicals generated in the second step and the third step, and OH generated by self-crushing the microbubbles in the liquid in the pipe.
- the aquatic organisms are brought into contact with the aquatic organisms in the liquid in the pipe by bringing radicals and OH radicals generated by the ozone contained in the microbubbles dissolved and decomposed in the liquid by the self-crushing. It is characterized by being killed.
- This kind of aquatic organism killing method in the liquid kills aquatic organisms in the ballast water when the ballast water is loaded into the ballast tank or when the ballast water is discharged from the ballast tank to the sea. It can be effectively applied to the method.
- the aquatic organism in the present invention is a general term for microbes living in water such as plankton in addition to microorganisms such as underwater bacteria, protozoa, and single cell organisms.
- FIG. 1 is a block diagram showing an example of an aquatic organism killing apparatus in ballast water according to the present invention.
- reference numeral 1 denotes a pressure increasing pump (ballast pump) that pumps up ballast water containing aquatic organisms and feeds it to a ballast tank 3 through a pipe 2.
- ballast pump a pressure increasing pump
- ozone mixing section 40 is an ozone mixing section provided in the middle of the branch pipe 4, and ozone supplied from an ozone generator (not shown) is mixed in or before the mixing section 40.
- the supplied ozone is discharged into the ballast water flowing in the branch pipe 4. If an ejector capable of gas-liquid mixing, a static mixer (static mixer), or the like is used in the ozone mixing unit 40, ozone is released into the ballast water in the form of bubbles.
- a static mixer static mixer
- microbubble manufacturing unit which is a part where bubbles generated in the mixing unit 40 are generated into microbubbles in the range of 4 to 100 ⁇ m by the pressurizing unit in the pipe 2.
- the microbubbles may be ozone bubbles or may be formed by bubbles other than ozone.
- ozone bubbles are formed in the branch pipe 4, which joins the pipe 2 and is released into the ballast water as microbubbles in the pipe 2.
- ozone includes dissolved ozone and ozone present as microbubbles.
- the discharge pressure of the booster pump 1 is preferably a pressure that can maintain the pressure in the pipe 2 at 0.5 MPa to 0.7 MPa.
- an ozone mixing pump 41 can be provided in the line of the branch pipe 4.
- the pressure of the ozone mixing pump 41 is determined in consideration of the pressure loss of the ozone mixing unit 40, the supply pressure of gas from the gas supply source, the fluid pressure in the pipe 2 in the merging unit 21, and the like. It is in the range of 3 to 1.0 MPa, more preferably in the range of 0.5 to 0.9 MPa.
- the ozone mixed solution generated in the branch pipe 4 is joined to the pipe 2 in the joining unit 21, and the ozone in the ozone mixture is included in the fluid after the joining. Bubbles are generated into microbubbles having a diameter of 4-100 ⁇ m.
- microbubbles are generated because the pressure in the pipe 2 at the time of merging is maintained at 0.5 MPa to 0.7 MPa, and it is estimated that the pressure is high.
- the ozone mixed solution generated in the branch pipe 4 contains bubbles containing ozone, and the bubble diameter is in the range of 4 to 1000 ⁇ m, but the pressure in the pipe 2 at the time of merging is 0.5 MPa. It is estimated that microbubbles having a diameter in the range of 4 to 100 ⁇ m are generated because the pressure is maintained at ⁇ 0.7 MPa and the pressure is high.
- An OH radical generator 6 is provided on the downstream side of the pipe 2 constituting the microbubble manufacturing unit 5.
- the OH radical generator 6 is formed with a bulging portion 60 bulging toward the vicinity of the center in the liquid flow direction.
- the bulging portion 60 has a shape in which two conical funnels 61 and 62 formed in the opposite direction from the central top are joined in the vicinity of the central top.
- a plate 63 with a hole is provided inside the bulging portion 60.
- connection pipe 7 is a connection pipe connecting the downstream side of the bulging part 60 and the ballast tank 3.
- An OH radical detection pipe (not shown) can be attached to the connection pipe 7.
- a punching plate 63 is installed as an example of a plate with a hole.
- the installation method of the punching plate 63 is not particularly limited.
- a slit plate may be used instead of the punching plate.
- the slit plate is provided with a plurality of slits in parallel.
- the slit width is preferably in the range of 100 to 1000 ⁇ m.
- a collision plate 64 can be arranged on the downstream side of the punching plate 63 so that the ballast water that has passed through the punching plate 63 collides.
- the distance L between the merging portion 21 and the punching plate 63 is preferably in the range of 5D to 6D with respect to the inner diameter D of the pipe 2 in order to generate microbubbles in the bulging portion 60.
- Ballast water containing microbubbles is in a state of being pressurized by the bulging portion 60, and passes through the punching plate 63 by the pressure. By the passage, the ballast water after the passage is decompressed based on the pressure loss.
- the microbubbles are forcibly crushed and the microbubbles themselves are crushed so that OH radicals OH radicals are also generated when ozone contained in the microbubbles dissolves in the ballast water and decomposes due to the forced crushing.
- OH radicals having excellent activity the OH radicals generated by the self-crushing of the microbubbles themselves in the ballast water in the pipe 2, and the ozone contained in the microbubbles dissolved and decomposed in the ballast water by the self-crushing.
- OH radicals generated by the above contact with aquatic organisms in the ballast water. This kills aquatic life.
- OH radicals excellent in activity can be used for killing aquatic organisms.
- Booster pump (ballast pump) 2 Piping 20: Branching section 21: Merging section 3: Ballast tank 4: Branching pipe 40: Ozone mixing section 41: Ozone mixing pump 5: Microbubble production section 6: OH radical generation section 60: Swelling section 61, 62: Conical funnel 63: Plate with holes (punching plate) 64: Colliding plate 7: Connection piping
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Abstract
Description
前記第1工程で生成した前記配管内の前記マイクロバブルを強制圧壊させ、該強制圧壊による該マイクロバブルそのものの圧壊によってOHラジカルを生成する第2工程と、
前記マイクロバブルの強制圧壊により該マイクロバブルに含まれるオゾンが液中に溶解して分解することによってOHラジカルを生成する第3工程とを有し、
前記第2工程及び前記第3工程で生成されたOHラジカルと、前記配管内の液中の前記マイクロバブルそのものの自己圧壊によって生成されるOHラジカルと、該自己圧壊により前記マイクロバブルに含まれるオゾンが液中に溶解して分解することによって生成されるOHラジカルとを、前記配管内の液中の水生生物に接触させて該水生生物を殺滅することを特徴とする液中の水生生物殺滅方法。
前記配管内のバラスト水中に放出されたオゾンを含む気泡を、4~100μmの範囲のマイクロバブルとなるように生成する第1工程と、
前記第1工程で生成したマイクロバブルを強制圧壊させ、該強制圧壊による該マイクロバブルそのものの圧壊によってOHラジカルを生成する第2工程と、
前記マイクロバブルの強制圧壊により該マイクロバブルに含まれるオゾンがバラスト水中に溶解して分解することによってOHラジカルを生成する第3工程とを有し、
前記第2工程及び前記第3工程で生成されたOHラジカルと、前記配管内の液中の前記マイクロバブルそのものの自己圧壊によって生成されるOHラジカルと、該自己圧壊により前記マイクロバブルに含まれるオゾンがバラスト水中に溶解して分解することによって生成されるOHラジカルとを、前記配管内のバラスト水中の水生生物に接触させて該水生生物を殺滅することを特徴とするバラスト水中の水生生物殺滅方法。
該配管の上流側の分岐部で前記バラスト水の一部を分岐させて再度該配管の下流側の合流部に戻す分岐管と、
該分岐管の途中に設けられ、前記バラスト水の一部にオゾンを混合するオゾン混合部と、
前記合流部以降の配管内のバラスト水中に放出されたオゾンを含む気泡を、4~100μmの範囲のマイクロバブルとなるように生成するマイクロバブル製造部と、
前記マイクロバブル製造部で生成したマイクロバブルを強制圧壊させ、該強制圧壊による該マイクロバブルそのものの圧壊によってOHラジカルを生成すると共に、該マイクロバブルの強制圧壊により該マイクロバブルに含まれるオゾンがバラスト水中に溶解して分解することによってOHラジカルを生成するOHラジカル生成部と、
前記OHラジカル生成部で生成したOHラジカルと、前記配管内のバラスト水中の前記マイクロバブルそのものの自己圧壊によって生成されるOHラジカルと、該自己圧壊により前記マイクロバブルに含まれるオゾンがバラスト水中に溶解して分解することによって生成されるOHラジカルとを、前記配管内のバラスト水中の水生生物に接触させて該水生生物を殺滅することを特徴とするバラスト水中の水生生物殺滅装置。
2:配管
20:分岐部
21:合流部
3:バラストタンク
4:分岐管
40:オゾン混合部
41:オゾン混合ポンプ
5:マイクロバブル製造部
6:OHラジカル生成部
60:膨出部
61、62:円錐状漏斗
63:孔付き板(パンチング板)
64:衝突板
7:接続配管
Claims (5)
- 配管内の液中に放出されたオゾンを含む気泡を、4~100μmの範囲のマイクロバブルとなるように生成する第1工程と、
前記第1工程で生成した前記配管内の前記マイクロバブルを強制圧壊させ、該強制圧壊による該マイクロバブルそのものの圧壊によってOHラジカルを生成する第2工程と、
前記マイクロバブルの強制圧壊により該マイクロバブルに含まれるオゾンが液中に溶解して分解することによってOHラジカルを生成する第3工程とを有し、
前記第2工程及び前記第3工程で生成されたOHラジカルと、前記配管内の液中の前記マイクロバブルそのものの自己圧壊によって生成されるOHラジカルと、該自己圧壊により前記マイクロバブルに含まれるオゾンが液中に溶解して分解することによって生成されるOHラジカルとを、前記配管内の液中の水生生物に接触させて該水生生物を殺滅することを特徴とする液中の水生生物殺滅方法。 - バラストポンプによりバラスト水を汲み上げて配管を介してバラストタンクに送液する際に、
前記配管内のバラスト水中に放出されたオゾンを含む気泡を、4~100μmの範囲のマイクロバブルとなるように生成する第1工程と、
前記第1工程で生成したマイクロバブルを強制圧壊させ、該強制圧壊による該マイクロバブルそのものの圧壊によってOHラジカルを生成する第2工程と、
前記マイクロバブルの強制圧壊により該マイクロバブルに含まれるオゾンがバラスト水中に溶解して分解することによってOHラジカルを生成する第3工程とを有し、
前記第2工程及び前記第3工程で生成されたOHラジカルと、前記配管内の液中の前記マイクロバブルそのものの自己圧壊によって生成されるOHラジカルと、該自己圧壊により前記マイクロバブルに含まれるオゾンがバラスト水中に溶解して分解することによって生成されるOHラジカルとを、前記配管内のバラスト水中の水生生物に接触させて該水生生物を殺滅することを特徴とするバラスト水中の水生生物殺滅方法。 - 水生生物を含むバラスト水を汲み上げて配管を介してバラストタンクまで送液するバラストポンプと、
該配管の上流側の分岐部で前記バラスト水の一部を分岐させて再度該配管の下流側の合流部に戻す分岐管と、
該分岐管の途中に設けられ、前記バラスト水の一部にオゾンを混合するオゾン混合部と、
前記合流部以降の配管内のバラスト水中に放出されたオゾンを含む気泡を、4~100μmの範囲のマイクロバブルとなるように生成するマイクロバブル製造部と、
前記マイクロバブル製造部で生成したマイクロバブルを強制圧壊させ、該強制圧壊による該マイクロバブルそのものの圧壊によってOHラジカルを生成すると共に、該マイクロバブルの強制圧壊により該マイクロバブルに含まれるオゾンがバラスト水中に溶解して分解することによってOHラジカルを生成するOHラジカル生成部と、
前記OHラジカル生成部で生成したOHラジカルと、前記配管内のバラスト水中の前記マイクロバブルそのものの自己圧壊によって生成されるOHラジカルと、該自己圧壊により前記マイクロバブルに含まれるオゾンがバラスト水中に溶解して分解することによって生成されるOHラジカルとを、前記配管内のバラスト水中の水生生物に接触させて該水生生物を殺滅することを特徴とするバラスト水中の水生生物殺滅装置。 - 前記OHラジカル生成部は、前記配管の下流端側に接続された配管の膨出部と孔付き板とからなり、該膨出部においてバラスト水が少なくとも加圧された状態にあり、前記孔付き板を通過する際にマイクロバブルを強制圧壊してOHラジカルを生成すると共に、該強制圧壊によりマイクロバブルに含まれるオゾンがバラスト水中に溶解して分解する際にOHラジカルを生成することを特徴とする請求項3記載のバラスト水中の水生生物殺滅装置。
- 前記孔付き板は、パンチング板又はスリット板であることを特徴とする請求項4記載のバラスト水中の水生生物殺滅装置。
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JP2013521514A JP5604003B2 (ja) | 2011-06-23 | 2012-05-31 | バラスト水中の水生生物殺滅装置 |
CN201280030964.XA CN103608300A (zh) | 2011-06-23 | 2012-05-31 | 液体中的水生生物杀灭方法、压载水中的水生生物杀灭方法及装置 |
US14/127,729 US20140202965A1 (en) | 2011-06-23 | 2012-05-31 | Method for Killing Aquatic Organisms in Liquid and Method and Apparatus for Killing Aquatic Organisms in Ballast Water |
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JP2003200156A (ja) * | 2001-10-30 | 2003-07-15 | Kaiyo Kaihatsu Gijutsu Kenkyusho:Kk | 液中微生物殺減装置 |
WO2005030649A1 (ja) * | 2003-09-30 | 2005-04-07 | Reo Laboratory Co., Ltd. | 微小気泡の圧壊 |
JP2006263563A (ja) * | 2005-03-23 | 2006-10-05 | Mitsui Eng & Shipbuild Co Ltd | バラスト水中の微生物等の殺減装置 |
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