WO2005110928A1 - Procédé de l’eau de ballast pour vaisseau, système de producton d'eau de ballast pour vaisseau et utlisation - Google Patents

Procédé de l’eau de ballast pour vaisseau, système de producton d'eau de ballast pour vaisseau et utlisation Download PDF

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Publication number
WO2005110928A1
WO2005110928A1 PCT/JP2005/003125 JP2005003125W WO2005110928A1 WO 2005110928 A1 WO2005110928 A1 WO 2005110928A1 JP 2005003125 W JP2005003125 W JP 2005003125W WO 2005110928 A1 WO2005110928 A1 WO 2005110928A1
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Prior art keywords
water
membrane
ballast water
seawater
producing
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PCT/JP2005/003125
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English (en)
Japanese (ja)
Inventor
Makio Tamura
Sumiyuki Fusiki
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Organo Corporation
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Publication of WO2005110928A1 publication Critical patent/WO2005110928A1/fr

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    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/145—Ultrafiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/147—Microfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/08—Prevention of membrane fouling or of concentration polarisation
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
    • B63B43/06—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability using ballast tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J1/00—Arrangements of installations for producing fresh water, e.g. by evaporation and condensation of sea 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2315/00—Details relating to the membrane module operation
    • B01D2315/06—Submerged-type; Immersion type
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • 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
    • 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
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis

Definitions

  • the present invention relates to a method for producing ballast water for ships, an apparatus for producing ballast water for ships, and uses thereof.
  • the present invention relates to a method for producing ballast water for ships from which microorganisms have been removed (hereinafter, also simply referred to as "ballast water”) loaded for stabilizing the center of gravity during navigation of a ship, and for producing ballast water for ships. Equipment and use.
  • ballast water introduces microorganisms that do not naturally inhabit specific sea areas, resulting in the destruction of marine ecosystems and not only seriously damaging the lives of the people in the water area.
  • the destruction of the global marine environment is occurring and is a serious international problem.
  • various methods have been studied on an international scale for the purpose of removing microorganisms from ballast water (JP-A-2003-181443, JP-A-2000-515803, JP-A-11-265684). JP-A-2003-horizon, JP-T-2002-504851, JP-A-04-322788).
  • fresh water such as tap water is usually left standing for several days, even if it is tap water, since the free chlorine added thereto disappears, so that it becomes putrid odor and cannot be drunk. For example, it takes about 10 days for Japanese power to travel to oil-producing countries, so the freshwater onboard the vessel will rot and become unusable. Since freshwater spoils due to microorganisms in freshwater, the microorganisms may be killed by a known method. However, for example, the method of heating fresh water is not economical depending on the means of procuring heating energy, and it is difficult to completely kill microorganisms.
  • the method of irradiating freshwater with ultraviolet light requires a huge amount of power to kill or inactivate all microorganisms, and a large number of UV devices are installed in parallel to treat high-flow freshwater.
  • the cost of installation of the device will increase.
  • the method of treating fresh water with chemicals such as iodine and hypochlorous acid requires a high concentration of chemicals to kill some types of bacteria. You have to use
  • the method of killing microorganisms in freshwater is, as described above, difficult to completely kill microorganisms, and the small amount of microorganisms remaining without killing grows during transportation. The development of a method for removal is eagerly desired.
  • the present invention provides a method for removing microorganisms in freshwater or seawater by a method other than killing, and simultaneously desalinating seawater to prevent decay of freshwater during transportation and to reduce freshwater utilization value.
  • the present invention provides a method for passing freshwater through a microfiltration membrane, an ultrafiltration membrane, or a reverse osmosis membrane, thereby obtaining a membrane-treated water from which microorganisms in the freshwater have been removed. It is a manufacturing method.
  • the present invention is a method for producing ballast water for ships, which includes a step of removing microorganisms in seawater by passing seawater through a reverse osmosis membrane and obtaining desalinated membrane-treated water.
  • the fresh water is preferably at least one of industrial water, tap water, river water, lake water, groundwater, and sewage treatment water.
  • the oil component in the seawater is adsorbed and removed by a hydrophobic adsorbent.
  • a bactericide is added to the membrane-treated water.
  • the present invention provides a precision filtration membrane device, an ultrafiltration membrane device or a reverse osmosis membrane device for removing microorganisms in the supplied freshwater, and a ballast water storage tank for storing the treated water.
  • a ballast water producing apparatus for a ship comprising:
  • the present invention also provides a ballast water for ships, comprising: a reverse osmosis membrane device that removes microorganisms from seawater supplied from seawater supply means and desalinates the water; and a ballast water storage tank that stores membrane-treated water. Manufacturing equipment.
  • the marine ballast water producing apparatus further includes a chemical adding means for adding a germicide to the membrane-treated water.
  • the microfiltration membrane device is an immersion type hollow fiber membrane device or a pressure type hollow fiber membrane device.
  • the present invention is the use of membrane-treated water obtained by the method for producing ballast water for ships as ballast water for ships.
  • microorganisms in seawater or freshwater are removed by a microorganism filtration membrane, so that microorganisms in freshwater or seawater are removed by a method other than the method of killing them.
  • it is desalinated to prevent freshwater decay during transportation and to maintain the value of freshwater use. You can have.
  • FIG. 1 is a flowchart of a ballast water producing apparatus used in Example 1.
  • FIG. 2 is a flowchart of a ballast water production apparatus used in Example 3.
  • the fresh water is not particularly limited, and includes, for example, industrial water, tap water, river water, lake water, groundwater, or treated sewage water. Many of these freshwaters contain microorganisms and usually have a turbidity of 1-100 degrees.
  • Seawater is not particularly limited, and is seawater in a harbor area where ships are normally anchored. It contains 0.05-1.0% of oil, besides microorganisms, and has a turbidity of 1-100 degrees. .
  • those that particularly affect spoilage include coliform bacteria, cholera bacteria, enterococci, larvae of daphnia, larvae of North Pacific starfish, larvae of Asian kelp, larvae of zebra mussels and Toxic algae and the like are mentioned, and the size of these microorganisms is almost several / zm, most is / J, and the size is 0.3-0.
  • the microfiltration membrane (MF) used for the treatment of fresh water includes a hollow fiber membrane, a flat membrane, a snail membrane, and a tubular membrane.
  • the hollow fiber membrane is preferable because the filtration area per unit volume can be maximized.
  • the hollow fiber membrane uses a large number of hollow fibers arranged in parallel, has a hollow structure, and further has a large number of pores communicating with the holes forming the hollow structure and communicating with the holes on the membrane surface. It is an external pressure type and an internal pressure type.
  • the diameter of the pores of the hollow fiber membrane is 0.01-0.4 ⁇ m, preferably 0.01-0.3 m.
  • the diameter of the pores of the hollow fiber membrane is 0.002 to 0.011 m.
  • the size of microorganisms such as bacteria and larvae that inhabit freshwater is usually several m, and the smallest one is about 0.3-0.5 ⁇ m.
  • microorganisms such as these bacteria and larvae in fresh water can be almost completely removed.
  • an external pressure type hollow fiber membrane in that the separation and removal operation can be performed.
  • the hollow fiber membrane is used as an immersion type hollow fiber membrane device or a pressure type hollow fiber membrane device.
  • the method using an immersion type hollow fiber membrane device is a method of removing microorganisms in fresh water by sucking a hole side of the hollow fiber of the device crushed in a fresh water storage tank with a suction pump.
  • both the immersion type hollow fiber membrane device and the pressure type hollow fiber membrane device generate fine bubbles in the downward direction of the hollow fiber membrane, and while appropriately removing microorganisms attached to the hollow fiber membrane, Filtration can be continued while washing the surface of the membrane.
  • Materials for the microfiltration membrane used in the present embodiment include polyethylene, polypropylene, polysulfone, hydrophilized polysulfone, polychloridized biylidene, polyvinylidene fluoride, chlorinated polyethylene, chlorinated polypropylene, polyacrylonitrile, Examples thereof include polyether sulfone and cellulose acetate.
  • a reverse osmosis membrane used for the treatment of fresh water or seawater is usually used as a reverse osmosis membrane device incorporating a reverse osmosis membrane module.
  • the reverse osmosis membrane module for example, a module having a structure in which a bag-shaped reverse osmosis membrane is spirally wound around a permeated water collecting pipe, and the upper part thereof is covered with an outer package. Seawater or freshwater is injected into the reverse osmosis membrane module by a pump. Thereby, salts and organic substances in seawater or freshwater can be removed, and microorganisms such as bacteria and larvae can be almost completely removed. Therefore, when the raw water is seawater, the permeated water of the reverse osmosis membrane is desalinated.
  • the method of passing fresh water through a microfiltration membrane, ultrafiltration membrane, or reverse osmosis membrane, or the method of passing seawater through a reverse osmosis membrane is not particularly limited. It is preferable to arrange more than one group in parallel. In this case, even if one membrane device is a backwashing process or a regeneration process, the other membrane device can perform a microorganism removing step, and a large amount of membrane-treated water can be continuously obtained. Further, the membrane-treated water obtained in the microbial removal step can be stored in a ballast water storage tank, so that ballast water can be sent at a high flow rate to a ship anchored in the ballast water storage tank. The advantage is that the berthing period of the ship will not be extended to pump ballast water.
  • a backwashing step of washing the filtration membrane by backwashing is performed.
  • the time elapses in the microorganism removal process the cause of membrane clogging The quality of microorganisms and the like adhere to the filtration membrane, and the membrane differential pressure increases at the inlet and the outlet of the membrane. Therefore, the filtration of fresh water is stopped, and the filtration membrane is backwashed using the membrane-treated water as washing water.
  • the backwashing step the filtration function of the filtration membrane is restored.
  • the process proceeds to the microorganism removing step again, and by repeating this step, filtration for a long period of time is enabled.
  • the oil content in the seawater is removed in advance before the treatment with the reverse osmosis membrane, thereby preventing clogging of the reverse osmosis membrane surface.
  • oil cannot be easily removed when it adheres to the membrane surface, causing clogging of the filtration membrane and causing a reduction in filtration performance.
  • the method of removing oil from seawater is not particularly limited, and a known oil / water separator can be used.
  • the oil / water separator using a hydrophobic adsorbent is preferable because it exhibits a high oil adsorption capacity by a simple method.
  • the hydrophobic adsorbent include a nonwoven fabric filter, a powder material, and a hollow fiber membrane made of a material such as lipophilic polyethylene or polypropylene.
  • the use of the oil adsorbent “Diamarus (registered trademark)” enables the oil to be removed very efficiently.
  • the method for removing turbid matter in seawater or freshwater is not particularly limited, and a known clarifier can be used.
  • the turbidity removing device include a sand filtration device, a device equipped with a nonwoven fabric filter cloth made of polyethylene or polypropylene, and a long fiber bundle clarifying device that adsorbs turbid matter to a bundle of polyester fibers filled in a filter tank. Is mentioned.
  • the use of the oil adsorbent "Diamarus (registered trademark)" is preferred because both oil removal and turbidity can be removed.
  • a bactericide to the membrane-treated water, since the decay of fresh water as the membrane-treated water is further prevented.
  • the disinfectant include hypochlorous acid.
  • the location where the disinfectant is added to the membrane treated water is not particularly limited, and is a pipe connecting the membrane device to the ballast water storage tank, a pipe connecting the ballast water storage tank or the ballast water storage tank to the ballast water tank of the ship. And the like.
  • the apparatus for producing ballast water includes a microfiltration membrane device, an ultrafiltration membrane device, or a reverse osmosis membrane device that removes microorganisms in freshwater supplied from the freshwater supply means; Or a ballast water storage tank (first device) that accumulates seawater, or a reverse osmosis membrane device that removes microorganisms from the supplied seawater and desalinates the seawater, and a ballast that accumulates membrane-treated water And a water storage tank (second device).
  • both the first device and the second device may further include a drug adding means for adding a bactericide to the membrane-treated water.
  • the medicine adding means is usually constituted by a medicine tank, a pump, piping, and the like.
  • the second device is provided with an oil component adsorption / removal device for removing the oil component in seawater, in front of the reverse osmosis membrane device.
  • a turbidity removing apparatus is installed before the membrane apparatus, and in the second apparatus, before the membrane apparatus and after the oil adsorption and removal apparatus, as necessary.
  • the fresh water supply means is a means for supplying fresh water to the filtration membrane device, and includes a fresh water pump and a fresh water intake pipe having an opening at one end in a fresh water source and the other end connected to the fresh water pump.
  • the seawater supply means is a means for supplying seawater to the reverse osmosis membrane device, and includes a seawater pump and a seawater intake pipe having one end opening in seawater and the other end connected to the seawater pump.
  • the piping from the membrane device to the ballast water storage tank and the ballast water storage tank are preferably sterilized.
  • the number of ballast water storage tanks and the type of tanks are not particularly limited. Further, as related facilities of the manufacturing apparatus of the present embodiment, there are a liquid feed pump for drawing ballast water in a ballast water storage tank, and a liquid feed pipe connecting the liquid feed pump and a ballast water tank of a ship anchored.
  • the ballast water producing apparatus may be installed on land or on a ship.
  • the ballast water tank will be a reservoir for freshwater or seawater that is raw water, and will also be a ballast water storage tank.
  • microorganisms in seawater or freshwater can be effectively removed by the microbial filtration membrane.
  • freshwater is simultaneously desalinated.
  • the value of freshwater can be maintained.
  • membrane-treated water is stored in, for example, a ballast water storage tank, it can be pumped as ballast water to ships and ships when necessary.
  • Toda ⁇ industrial water (raw water) in Saitama Prefecture was treated using the following ballast water production equipment A under the following operating conditions. Immediately after the treatment of raw water and treated water (membrane filtered water), after storage for 1 day, and after storage for 7 days, odor measurement, bacterial count, etc. were measured. Further, the sample after storage for 7 days was subjected to a sand filtration treatment to be carried out when producing ordinary industrial water or deionized water, and the odor of the treated sample was measured. The storage was performed at room temperature and in an air atmosphere. Measurements of general bacteria were performed only on the samples immediately after treatment and after storage for 7 days. The results are shown in Table 1.
  • the ballast water production system A is mainly composed of a hollow fiber membrane type microbial filtration device 3 and a hollow fiber membrane module consisting of a microfiltration membrane with a processing capacity of 3 m 3 Z in a treatment tank 4 “Stellapore SUR31534” (Mitsubishi Rayon ) Was used. Further, the hollow fiber membrane type microbial filtration device 3 and the treated water storage tank 6 were connected by a treated water pipe 7, and a suction pump 8 was installed in the treated water pipe 7. In addition, a backwashing pump 9 was installed so that the microfiltration membrane could be backwashed by the backwashing pipe 10 for the filtered water in the treated water storage tank 6.
  • Raw water was supplied to ballast water production equipment A at a throughput of 3 m 3 Z.
  • air from the blower 11 is bubbled as fine bubbles from a distributor 12 installed below the hollow fiber membrane module 5, and filtered while removing microorganisms and the like adhering to the surface of the hollow fiber membrane.
  • the backwashing step was 1 minute with respect to the microorganism removing step of 15 minutes.
  • the waste liquid in which the microorganisms were concentrated was appropriately drained from the lower part of the treatment tank 4 of the hollow fiber membrane type microorganism filtration device 3.
  • BGLB Green Lactose Bile Broth
  • the samples were observed under a microscope and counted. The indication was expressed in the number per 1 mL.
  • Example 2 The procedure was performed in the same manner as in Example 1 except that the ballast water production apparatus B was used instead of the nost water production apparatus A. In Example 2, measurement of general bacteria and total plankton number was not performed. The results are shown in Table 1.
  • ballast water production apparatus A An apparatus similar to ballast water production apparatus A was used except that an ultrafiltration membrane apparatus LOV membrane (manufactured by Asahi Kasei Corporation) was used instead of the hollow fiber membrane type microbial filtration apparatus.
  • the operating pressure of the ultrafiltration membrane device LOV membrane is 0. IMPa.
  • the operation method is the same as the operation method of ballast water production system A.
  • Example 3 The procedure was performed in the same manner as in Example 1 except that the ballast water production apparatus C was used instead of the nost water production apparatus A. In Example 3, measurement of general bacteria and total plankton count was not performed. The results are shown in Table 1.
  • the ballast water production device C includes a fresh water supply pump 22, a reverse osmosis membrane device 21, and a treated water storage tank 6.
  • the reverse osmosis membrane device 21 has a reverse osmosis membrane module ES-10 (not shown) (manufactured by Nitto Denko Corporation). Is loaded. The operation of the reverse osmosis membrane module is performed by a known method, and the operating pressure is 0.6 MPa.
  • Example 1 The process was performed in the same manner as in Example 1 except that the treatment using the nost water producing apparatus was not performed, and the raw water was used as a measurement sample (untreated). The results are shown in Table 1.
  • Odor 2 5 5 General bacteria 1 0 0-1 0 4 or more-Total: r Rank tonnage 2 0 1 0 0 or more-Comparative example 2
  • Odor 3 ⁇ 4 tefu Odorless 5 5 General bacteria 0 ⁇ 10 4 or more
  • Example 2 The procedure was the same as in Example 1 except that the raw water used was Arakawa river water instead of Toda II industrial water. The measurement of general bacteria and the like was omitted. The results are shown in Table 2.
  • Example 2 The procedure was the same as in Example 2 except that the raw water used was Arakawa River water instead of Toda II industrial water. The measurement of general bacteria and the like was omitted. The results are shown in Table 2.
  • Example 2 The procedure was the same as in Example 3, except that Arakawa River water was used as raw water instead of Toda II industrial water. The measurement of general bacteria and the like was omitted. The results are shown in Table 2.
  • Example 4 The same procedure as in Example 4 was carried out except that the treatment using the nost water producing apparatus was not performed, and the raw water was used as a measurement sample as is (untreated). The results are shown in Table 2.
  • Example 4 was carried out in the same manner as in Example 4 except that the raw water was boiled at 100 ° C for 5 minutes instead of using the nost water producing apparatus. The results are shown in Table 2.
  • Example 4 In place of the treatment using the ballast water production equipment, the same operation as in Example 4 was carried out except that the raw water was subjected to ultrasonic treatment at a frequency of 28 kHz and an irradiation time of 10 minutes as mechanical crushing and cooled to prevent a temperature rise. .
  • the results are shown in Table 2.
  • Example 4 rtn breathless odor
  • Example 5 ut breathless te a.
  • Example 7 Hypochlorous acid was further added to the treated water and 2. Omg / L was added, and the measurement was carried out in the same manner as in Example 1 except that the measurement was performed after 14 days of storage. In Example 7, measurement of the number of general bacteria and total plankton was not performed. The results are shown in Table 3.
  • Example 8 Hypochlorous acid was further added to the treated water, 2. Omg / L was added, and the measurement was carried out in the same manner as in Example 2 except that the measurement was performed after storage for 14 days. In Example 8, measurement of the number of general bacteria and total plankton was not performed. The results are shown in Table 3.
  • Example 3 Hypochlorous acid was further added to the treated water, and 2.Omg / L was added. The measurement was carried out in the same manner as in Example 3 except that the measurement was performed after storage for 14 days. In Example 9, measurement of the number of general bacteria and the total plankton was not performed. The results are shown in Table 3.
  • Comparative Examples 7-9 were stored for 14 days from Comparative Examples 13 and 14, respectively. Comparative Example 10 did not perform treatment using a ballast water producing apparatus, and further added hypochlorous acid to raw water. This was performed in the same manner as in Example 1 except that the measurement was performed after adding / L and storing for 14 days. In Comparative Examples 7-9, measurement of general bacteria and total plankton count was not performed. The results are shown in Table 3.
  • Example 10 The same method as in Example 1 was adopted except that ballast water production equipment D was used instead of nost water production equipment A, and seawater from Odaiba, Tokyo, was used instead of industrial water for Toda ⁇ . I went. In Example 10, the measurement of the general bacteria and the total plankton number was not performed. The results are shown in Table 4.
  • the raw water is seawater from Odaiba instead of freshwater, a seawater supply pump is used instead of the freshwater supply pump 22, and the seawater desalination reverse osmosis module SU-810 (manufactured by Toray) is used instead of the reverse osmosis membrane module ES-10. ) And the operation pressure was changed to 6. OMPa instead of 0.6 MPa.
  • treated water obtained by treating fresh water with an MF membrane, a UF membrane, or an RO membrane has no odor even after being stored for one week, and general bacteria and plankton are also detected. Nakata.
  • the treated water obtained by treating seawater with the RO membrane was fresh water, and even after being stored for one week, it did not feel odor and did not detect general bacteria or plankton.
  • the bacterium-plankton is not mixed in the membrane-treated water, it is possible to prevent freshwater from being putrefactive during voyage and maintain the value of freshwater.
  • the treated water obtained by adding hypochlorous acid to the treated water of these examples did not have an odor even after being stored for a further one week (total of two weeks), so that it could be used for a longer voyage. it can.
  • both plantaton and general bacteria are killed, but since the storage container is not sterilized, it is presumed that bacteria are generated from the dead body of planktonic bacteria during storage. .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nanotechnology (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Sorption (AREA)
  • Removal Of Floating Material (AREA)

Abstract

Procédé de production d'eau de ballast pour vaisseau dans lequel l'eau traitée de membrane est produite en laissant passer de l'eau fraîche à travers une membrane de microfiltration, une membrane d'ultrafiltration ou une membrane d'osmose inversée, éliminant les microorganismes dans l'eau fraîche, ou l'eau fraîche traitée par membrane est produite par passage de l'eau de mer à travers l'organe d'osmose inversé éliminant ainsi les microorganismes dans l'eau de mer. L'eau fraîche peut être évitée d'être décomposée pendant le transport en éliminant les microorganismes dans l'eau fraîche ou l'eau de mer en utilisant un procédé autre qu'un procédé d'annihilation et par production d'eau fraîche à partir d'eau de mer simultanément.
PCT/JP2005/003125 2004-05-19 2005-02-25 Procédé de l’eau de ballast pour vaisseau, système de producton d'eau de ballast pour vaisseau et utlisation WO2005110928A1 (fr)

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JP2004148564A JP2005329300A (ja) 2004-05-19 2004-05-19 船舶用バラスト水の製造方法及び製造装置

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JP2007245034A (ja) * 2006-03-16 2007-09-27 Mitsui Eng & Shipbuild Co Ltd 膜モジュールを用いた膜処理方法及び膜処理装置
CN102166479A (zh) * 2011-03-07 2011-08-31 厦门绿邦膜技术有限公司 一种改善的抗污染膜装置
CN102963997A (zh) * 2011-09-01 2013-03-13 富士电机株式会社 水处理方法和水处理装置
WO2020160735A2 (fr) 2019-02-06 2020-08-13 Aridity Aps Procédé de nettoyage d'eau de mer

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EP2135847A4 (fr) 2007-03-22 2012-12-12 Metawater Co Ltd Procédé de traitement d'eau de ballast et appareil pour ce procédé
JP2009241040A (ja) * 2008-03-31 2009-10-22 Mitsui Eng & Shipbuild Co Ltd バラスト水製造用の膜の再生方法及び装置
JP5281183B2 (ja) * 2012-10-05 2013-09-04 三井造船株式会社 バラスト水処理用の膜処理設備に用いられる膜カートリッジの交換方法
US9492795B2 (en) * 2013-02-22 2016-11-15 Battelle Memorial Institute Membrane device and process for mass exchange, separation, and filtration
KR101636138B1 (ko) * 2014-08-13 2016-07-05 두산중공업 주식회사 정삼투 공정을 이용한 선박의 평형수 처리 장치 및 방법

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CN102166479A (zh) * 2011-03-07 2011-08-31 厦门绿邦膜技术有限公司 一种改善的抗污染膜装置
CN102963997A (zh) * 2011-09-01 2013-03-13 富士电机株式会社 水处理方法和水处理装置
CN102963997B (zh) * 2011-09-01 2015-10-14 富士电机株式会社 水处理方法和水处理装置
WO2020160735A2 (fr) 2019-02-06 2020-08-13 Aridity Aps Procédé de nettoyage d'eau de mer

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