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WO2015068245A1 - Dispositif de traitement d'eau de ballast - Google Patents

Dispositif de traitement d'eau de ballast Download PDF

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Publication number
WO2015068245A1
WO2015068245A1 PCT/JP2013/080159 JP2013080159W WO2015068245A1 WO 2015068245 A1 WO2015068245 A1 WO 2015068245A1 JP 2013080159 W JP2013080159 W JP 2013080159W WO 2015068245 A1 WO2015068245 A1 WO 2015068245A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
water
cleaning
differential pressure
nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2013/080159
Other languages
English (en)
Japanese (ja)
Inventor
智陽 丹下
昭典 川上
白石　仁士
泰朋 善万
泰彦 齋藤
孝道 井出
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miura Co Ltd
Original Assignee
Miura Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Miura Co Ltd filed Critical Miura Co Ltd
Priority to PCT/JP2013/080159 priority Critical patent/WO2015068245A1/fr
Publication of WO2015068245A1 publication Critical patent/WO2015068245A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J4/00—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for
    • B63J4/002—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for for treating ballast water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
    • B01D33/463—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D33/50—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
    • B01D33/503—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles the backwash arms, shoes acting on the cake side
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
    • 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
    • C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
    • 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
    • C02F2303/16—Regeneration of sorbents, filters

Definitions

  • the present invention relates to a ballast water treatment apparatus in which a cylindrical filter that filters ballast water that has flowed inside and flows out of the ballast water is disposed inside the casing.
  • ballast water In a ship such as a tanker, when navigating to the destination again after unloading the crude oil etc. of the cargo, water called ballast water is usually placed in the ballast tank provided in the ship in order to balance the navigating ship.
  • Ballast water is basically taken at the loading port and discharged at the loading port, so if they are located in different locations, plankton and bacterial microorganisms contained in the ballast water will move around the world. become. Therefore, if ballast water is discharged from a loading port in a sea area different from the cargo port, microorganisms in another sea area will be released to that port, which may destroy the ecosystem in that sea area.
  • ballast water management treaty In order to prevent the destruction of the marine environment due to this ballast water, the International Maritime Organization (IMO) has concluded a ballast water management treaty, and as a standard for ballast water discharge, the microorganisms contained in the ballast water discharged out of the ship The content is regulated.
  • plankton of 50 ⁇ m or more is determined to be less than 10 individuals / m 3 and plankton of 10 to 50 ⁇ m is less than 10 individuals / ml according to the size of plankton. It is determined that E. coli is less than 250 cfu / 100 ml.
  • ballast water filtration by a ballast water treatment device in which a filter for filtering the ballast water is placed in the casing and ultraviolet irradiation to the ballast water by an ultraviolet irradiation device as means for killing and detoxifying microorganisms in the ballast water
  • the processing method by is known.
  • 99.99% removal performance is required for plankton of 50 ⁇ m or more, and therefore a filter body such as a very small wire mesh is required. Yes. For this reason, clogging is severe and constant filter cleaning is important.
  • Patent Document 1 discloses a suction nozzle that opens at a position facing the inner surface of the filter, and the suction nozzle along the inner surface of the filter along the axial and circumferential directions of the filter.
  • a filtration device comprising backwash nozzle moving means for moving to is described.
  • the filter is washed by the filtration device described in Patent Document 1 when the pressure difference between the inside and outside of the filter exceeds a predetermined pressure, the mud valve is opened, and the suction nozzle and the backwash nozzle are connected by the nozzle moving means and the backwash nozzle moving means. While being moved, the backwashing water is discharged from the backwashing nozzle, the suspended matter accumulated on the filter is removed with the washing water, and the mud is discharged from the suction nozzle.
  • the suction nozzle and backwash nozzle are operated so as to move in the axial direction of the filter while turning along the inner surface of the filter.
  • a problem that it took a long time.
  • a complicated mechanism is required to move the suction nozzle and the backwash nozzle in the axial direction while rotating in synchronization with each other, and complicated work is required for manufacturing and maintenance.
  • An object of the present invention is to enable efficient and effective cleaning of a cylindrical filter that filters out ballast water that has flowed into the interior and flows it out, simplifies the configuration, and facilitates manufacturing and maintenance.
  • An object of the present invention is to provide a ballast water treatment apparatus.
  • the invention described in claim 1 is a ballast water treatment apparatus in which a cylindrical filter that filters the ballast water that has flowed into the inside thereof and discharges the ballast water to the outside is disposed in the casing.
  • a cleaning water jet nozzle for jetting cleaning water toward the filter, cleaning sewage discharging means for discharging the cleaning sewage sucked by the suction nozzle from the casing to the outside, and a difference between the primary side and the secondary side of the filter
  • Differential pressure detection means for detecting pressure, and whether or not washing water is jetted or whether or not washing water is jetted based on the differential pressure detected by the differential pressure detection means, and washing water jets when washing water is jetted
  • a ballast water treatment apparatus is characterized by comprising a control means for controlling the pressure.
  • the suction nozzle provided on the primary side of the filter sucks foreign matter accumulated on the filter, and the washing water jet provided on the secondary side of the filter Since the foreign matter accumulated on the filter is peeled off by the nozzle ejecting the washing water toward the filter, the foreign matter deposited on the filter can be effectively removed, and the washing by the washing water jet nozzle
  • the presence or absence of washing water ejection or the presence or absence of washing water ejection and the washing water ejection pressure at the time of washing water ejection are controlled based on the differential pressure detected by the differential pressure detecting means. In addition, it is possible to effectively clean the waste amount of the treated water used as the cleaning water.
  • the washing water ejection nozzle is located on the same circumference as the suction nozzle and is located in front of the suction nozzle in a direction opposite to the rotation direction of the filter.
  • the cleaning water is applied to the outer peripheral surface of the filter from the cleaning water ejection nozzle in front of the suction nozzle in a direction opposite to the rotation direction of the filter.
  • the foreign matter accumulated on the primary side of the filter can be efficiently peeled off and the suction nozzle performs suction immediately after peeling, so that the foreign matter can be effectively removed by suction. .
  • the invention according to claim 3 is provided on the secondary side of the filter, opens toward the outer peripheral surface of the filter, and ejects high-pressure fluid toward the filter, and the high-pressure fluid ejection
  • a predetermined differential pressure is set in advance as a differential pressure between the primary side and the secondary side of the filter, and the differential pressure detected by the differential pressure detecting means reaches a predetermined differential pressure during the ballast water treatment operation.
  • the ballast water treatment operation is stopped, the water in the casing is discharged, and the high pressure fluid is ejected from the high pressure fluid ejection nozzle to the outer peripheral surface of the filter while rotating the filter. Foreign matter deposited on the inner peripheral surface of the filter can be peeled off and removed.
  • a fourth aspect of the present invention is the ballast water according to the second aspect, wherein a plurality of the suction nozzles are arranged linearly in the axial direction of the filter and / or at different angles in the circumferential direction. It is a processing device.
  • cleaning sewage can be sucked from the entire inner peripheral surface of the filter without moving the suction nozzle up and down along the filter, and there is no variation in the filter. Cleaning can be performed.
  • the invention according to claim 5 is characterized in that a plurality of the high-pressure fluid ejection nozzles are arranged linearly in the axial direction of the filter and / or at different angles in the circumferential direction. This is a ballast water treatment device.
  • high-pressure fluid can be ejected over the entire outer peripheral surface of the filter, and it can be reliably peeled off and removed without leaving foreign matter deposited on the primary side of the filter.
  • control means for controlling the rotational speed of the filter based on the differential pressure detected by the differential pressure detecting means is provided. It is a ballast water treatment apparatus of description.
  • the rotational speed of the filter is controlled based on the differential pressure detected by the differential pressure detecting means, the unit time with respect to the rotational speed of the filter corresponding to the differential pressure.
  • the suction length of the suction nozzle and the cleaning water ejection length of the cleaning water ejection nozzle can be changed, and foreign matter accumulated on the inner peripheral surface of the filter can be effectively removed in a short time.
  • the rotation of the filter more than necessary can be suppressed.
  • the invention according to claim 7 is characterized in that, when the differential pressure detected by the differential pressure detection means reaches a predetermined pressure, the cleaning water is ejected from the cleaning water ejection nozzle.
  • the ballast water treatment apparatus according to any one of 1 to 5.
  • the cleaning water is not ejected from the cleaning water ejection nozzle until the differential pressure detected by the differential pressure detecting means reaches a predetermined pressure, the treated water used as the cleaning water Waste of waste can be effectively suppressed.
  • the invention according to claim 8 is provided with water quality measuring means for measuring the quality of water to be treated introduced into the casing, and when the water quality measured by the water quality measuring means reaches a predetermined water quality,
  • the ballast water treatment apparatus according to any one of claims 1 to 5, wherein washing water is ejected from an ejection nozzle.
  • the eighth aspect of the present invention it is possible to estimate the amount of foreign matter accumulated on the inner peripheral surface of the filter based on the quality of the water to be treated introduced into the casing measured by the water quality measuring unit.
  • the cleaning water is not ejected from the washing water ejection nozzle until the water quality measured by the water quality measuring means reaches a predetermined water quality, so that waste of the discharged water used as washing water can be effectively suppressed. Can do.
  • the invention according to claim 9 is provided with a time measuring means for measuring the filtration processing time, and when the time measured by the time measuring means reaches a predetermined time, the washing water is ejected from the washing water ejection nozzle.
  • the ballast water treatment apparatus according to any one of claims 1 to 5, wherein the ballast water treatment apparatus is configured as described above.
  • the amount of foreign matter deposited on the inner peripheral surface of the filter can be estimated from the filtration time measured by the time measuring means, and the time measurement means measures the accumulated amount. Since the cleaning water is not ejected from the cleaning water ejection nozzle until the predetermined time reaches the predetermined time, waste of the discharge amount of the treated water used as the cleaning water can be effectively suppressed.
  • the invention according to claim 10 is provided with a counting means for counting the number of operation times of the ballast water treatment operation, and when the number of operations counted by the counting means reaches a predetermined number of times, the cleaning water is discharged from the cleaning water jet nozzle.
  • the ballast water treatment device according to any one of claims 1 to 5, wherein the ballast water treatment device is characterized by being ejected.
  • the washing water is not ejected from the washing water jet nozzle until the counted number of operations reaches a predetermined number, so that waste of discharged water for use as washing water can be effectively suppressed.
  • the filter used for the ballast water treatment operation can be reliably and effectively washed.
  • FIG. 1 It is a schematic sectional explanatory view showing an example of an embodiment of a ballast water treatment device concerning the present invention. It is a perspective view which shows the other example of suction nozzle arrangement
  • FIG. 1 is an explanatory schematic sectional view of this example
  • FIG. 2 is a perspective view showing another example of the arrangement of suction nozzles.
  • the ballast water treatment apparatus of the present example is disposed in a cylindrical casing 1, and a cylindrical filter 2 that filters out the water to be treated that has flowed inside and flows out to the outside, and a filter 2 centered on the axis thereof.
  • the filter rotating means 3 for rotating the filter 2, the suction nozzle 4 provided on the primary side of the filter 2 that opens toward the inner peripheral surface of the filter 2, and the secondary side of the filter 2 for cleaning toward the filter 2
  • Washing water ejection nozzle 6 for ejecting water
  • washing water supply means 7 for supplying washing water to the washing water ejection nozzle 6 under pressure
  • washing wastewater discharge for discharging the washing wastewater sucked by the suction nozzle 4 from the casing 1 to the outside Means 5
  • differential pressure detecting means 8 for detecting the differential pressure between the primary side and the secondary side of the filter 2, and whether or not cleaning water is jetted or not based on the differential pressure detected by the differential pressure detecting means 8 And wash water spout
  • a control unit 9 for
  • the casing 1 is formed in a cylindrical shape, and an upper opening is sealed with a lid 10 and a lower opening is sealed with a bottom 11.
  • the lid portion 10 is provided with an air vent valve 12 that vents air in the casing 1.
  • the cylindrical filter 2 disposed in the casing 1 has an upper opening sealed with an upper closing portion 13, and a lower opening formed with a lower closing portion 14 and a lower rotating shaft member 16 described later, the casing 1 and the filter 2. Is separated from the treated water outflow space 27 side.
  • the filter 2 preferably has a structure in which a filter body such as a metal mesh formed in a cylindrical shape is sandwiched between a support body formed in a cylindrical shape with two thin metal plates provided with a large number of holes.
  • the structure which provided the filter body in the outer peripheral surface of the support body which formed the metal thin plate which provided this in the cylindrical shape may be sufficient.
  • the filter rotation means 3 for rotating the filter 2 configured in this way is an upper rotation provided in the upper closing portion 13 and the lower closing portion 14 of the filter 2 so as to protrude in the axial direction at the axial center position of the filter 2.
  • the shaft member 15, the lower rotary shaft member 16, and the motor 17 that rotates the upper rotary shaft member 15 are configured.
  • the upper rotary shaft member 15 passes through the lid portion 10 of the casing 1 and is rotatably and liquid-tightly supported by the lid portion 10 via a sealed bearing member 18.
  • the lower rotary shaft member 16 is supported by the bottom portion 11 of the casing 1. And is supported rotatably and liquid tightly on the bottom 11 through a sealed bearing member 19.
  • the lower rotary shaft member 16 is a tubular body that communicates with the inside of the filter 2, and the treated water inlet 20 of the casing 1 is connected to the lower rotary shaft member 16 that protrudes outside the casing 1 from the bottom 11 of the casing 1. ing.
  • a treated water introduction path 21 is connected to the treated water introduction port 20.
  • the treated water introduction path 21 is provided with a pump 22 for pumping treated water, and an on-off valve 23 located downstream of the pump 22, and the treated water introduction path 21 on the downstream side of the on-off valve 23 is provided on the treated water introduction path 21.
  • the drainage channel 24 is connected, and the drainage channel 24 is provided with an open / close valve 25.
  • a treated water outlet 26 is provided on the side of the casing 1, and the treated water flowing through the treated water introduction path 21 and introduced from the treated water introduction port 20 passes through the lower rotary shaft member 16 and enters the filter 2. Then, it passes through the filter 2, is filtered, enters the treated water outflow space 27 formed between the casing 1 and the filter 2, and flows out from the treated water outlet 26.
  • the cleaning sewage discharging means 5 will be described first.
  • the on / off valve 30 provided in the sewage discharge pipe 29 is constituted.
  • the cleaning sewage collecting pipe 28 is disposed in the axial center of the filter 2, has an upper end closed, a lower end opened, and an upper end supported in a hole provided in the center of the upper closing part 13 of the filter 2. It fits rotatably via 31. Further, the lower end portion of the cleaning sewage collecting pipe 28 passes through the lower rotary shaft member 16 of the lower closing portion 14 of the filter 2 so as not to disturb the rotation of the filter 2 and is fixed to the treated water inlet 20 of the casing 1. It is supported.
  • a cleaning sewage discharge pipe 29 for discharging cleaning sewage to the outside is connected to the lower end portion of the cleaning sewage collecting pipe 28.
  • the cleaning sewage discharge pipe 29 is provided with an on-off valve 30 that is always open during operation. Yes.
  • the suction nozzle 4 connected to the cleaning sewage collecting pipe 28 and opening toward the inner peripheral surface of the filter 2 is preferably suckable from the entire axial direction of the filter 2, but the configuration is not particularly limited. .
  • a plurality of suction nozzles 4 can be arranged in a linear shape in the axial direction of the filter 2 and / or at different angles in the circumferential direction.
  • the plurality of suction nozzles 4 arranged at different angles in the circumferential direction may be arranged at the same height or arranged at different heights.
  • a plurality of suction nozzles 4 are used, arranged linearly in the axial direction of the filter 2 and connected to the cleaning sewage collecting pipe 28.
  • the filter 2 is arranged in two rows in the axial direction, and the other suction chamber 4 is disposed between the suction nozzles 4 in one row.
  • a row of suction nozzles 4 is located. Specifically, they are alternately arranged in the height direction on the left and right sides of the cleaning sewage collecting pipe 28.
  • the plurality of suction nozzles 4 are arranged in the axial direction of the filter 2 at intervals that do not leave any unsucked portions between the suction nozzles 4. You may arrange
  • the opening of the suction nozzle 4 that opens toward the filter 2 at a position facing the inner peripheral surface of the filter 2 is slidably in close contact with the inner peripheral surface of the filter 2.
  • a washing water ejection nozzle 6 that ejects washing water toward the filter 2 is provided at a side portion of the casing 1 and opens in the casing 1.
  • the washing water jet nozzle 6 is preferably capable of jetting washing water over the entire axial direction of the filter 2, but its configuration is not particularly limited.
  • a plurality of cleaning water jet nozzles 6 can be arranged in a linear shape in the axial direction of the filter 2 and / or at different angles in the circumferential direction.
  • the plurality of cleaning water jet nozzles 6 arranged at different angles in the circumferential direction may be arranged at the same height or may be arranged at different heights.
  • the washing water jet nozzle 6 is positioned on the same circumference as each of the plurality of suction nozzles 4 arranged, and is positioned in front of the suction nozzle 4 in a direction facing the rotation direction of the filter 2. However, it may be provided at each position facing each suction nozzle 4 or may be located behind the suction nozzle 4 in a direction facing the rotation direction of the filter 2. It may be provided.
  • the cleaning water supply means 7 that pressurizes and supplies the cleaning water to the cleaning water jet nozzle 6 uses the processing water processed by the filter 2 as the cleaning water, and is connected to the processing water outlet 26 of the filter 2.
  • One end of the cleaning water supply channel 33 is connected to the middle of the treated water channel 32, the other end of the cleaning water supply channel 33 is connected to each cleaning water jet nozzle 6, and the treated water treated by the filter 2 is the cleaning water supply channel.
  • the cleaning water jet nozzles 6 are supplied to the cleaning water jet nozzles 33.
  • the cleaning water supply passage 33 is provided with a pump 34 that pumps treated water to each cleaning water ejection nozzle 6 and an open / close valve 35 on the upstream side of the pump 34.
  • the pressure gauge 36 is provided on the downstream side of the pump 34, but this is not always necessary.
  • treated water treated with the filter 2 is used as washing water.
  • water stored in the ballast tank, domestic water or drinking water stored for other purposes. May be used as washing water.
  • the differential pressure detecting means 8 for detecting the differential pressure between the primary side and the secondary side of the filter 2 is constituted by pressure sensors 37 and 38 provided in the filter 2 and the treated water outflow space 27, and the primary side and the secondary side of the filter 2. The pressure on the side is detected, and the differential pressure between the primary side and the secondary side of the filter 2 is detected. The differential pressure between the primary side and the secondary side of the filter 2 can determine how dirty the filter 2 is. When the differential pressure is large, it indicates that the amount of foreign matter accumulated on the filter 2 is large. When the differential pressure is small Indicates that the filter 2 is in a state close to the initial state.
  • a high-pressure fluid ejection nozzle 40 that is provided on the secondary side of the filter 2, opens toward the outer peripheral surface of the filter 2, and ejects high-pressure fluid toward the filter 2, and the high-pressure fluid ejection nozzle 40.
  • the high-pressure fluid ejection nozzle 40 is preferably capable of being ejected over the entire axial direction of the filter 2, but the configuration thereof is not particularly limited.
  • a plurality of high-pressure fluid ejection nozzles 40 can be arranged linearly in the axial direction of the filter 2 and / or at different angles in the circumferential direction.
  • a plurality of high-pressure fluid ejection nozzles 40 that are arranged at different angles in the circumferential direction may be arranged at the same height or at different heights.
  • clean water is used as the high-pressure fluid supplied to the high-pressure fluid ejection nozzle 40.
  • clean water treated water processed by the filter 2, water stored in the ballast tank, domestic water or drinking water stored for the purpose of use for other purposes are used.
  • the high-pressure fluid supply means 41 for supplying clean water to be a high-pressure fluid the tank 39 and the high-pressure fluid ejection nozzle 40 are connected by a clean water supply passage 42, and the clean water stored in the tank 39 is pumped by the pumps 43.
  • the high pressure fluid jet nozzle 40 is pumped.
  • clean water is used as the high-pressure fluid supplied to the high-pressure fluid ejection nozzle 40, but the high-pressure fluid may be high-pressure air.
  • the high-pressure fluid supply means 41 supplies high-pressure air to the high-pressure fluid ejection nozzle 40 by an air compressor (not shown).
  • the high pressure fluid may be water vapor.
  • control means 9 has a control function capable of controlling the washing water to be ejected from the washing water ejection nozzle 6 when the differential pressure detected by the differential pressure detection means 8 reaches a predetermined pressure, and a detection function. It has a function of controlling the ejection pressure of the washing water from the washing water ejection nozzle 6 according to the differential pressure.
  • the predetermined pressure here is set as a predetermined pressure, which is a differential pressure at which it is determined that the amount of foreign matter accumulated on the filter 2 cannot be removed by the suction of the suction nozzle 4.
  • the initial differential pressure is stored, the allowable differential pressure is set ( ⁇ P1) with respect to the initial differential pressure ( ⁇ P1), and the differential pressure is set in several steps above ⁇ P1. Then, when ⁇ P3 is set as a predetermined pressure and the differential pressure ⁇ P3 is exceeded, the supply of the cleaning water to the cleaning water jet nozzle 6 is started, and the supply is stopped when the differential pressure L returns to ⁇ P3 or less. Further, the washing water ejection pressure from the washing water ejection nozzle 6 is set so as to increase in accordance with the differential pressure exceeding the differential pressure ⁇ P3.
  • this example is provided with a water quality measuring means 44 for measuring the quality of the water to be treated introduced into the casing 1, and the water quality measuring means 44 is provided in the water to be treated introduction path 21.
  • the control means 9 has a control function which can be controlled so that washing water is ejected from the washing water ejection nozzle 6 when the water quality measured by the water quality measurement means 44 reaches a predetermined water quality.
  • the predetermined water quality here, the amount of foreign matter accumulated on the inner peripheral surface of the filter 2 that can be estimated by the quality of the water to be treated introduced into the casing 1 cannot be completely removed by the suction of the suction nozzle 4.
  • the water quality judged to be the predetermined water quality is set.
  • the water quality measuring means 44 for example, a turbidimeter that measures the turbidity of the water to be treated is used. Further, the washing water ejection pressure from the washing water ejection nozzle 6 is set to be higher according to the water quality exceeding the predetermined water quality.
  • this example includes time measuring means 45 for measuring the filtration processing time, and the control means 9 performs cleaning from the washing water jet nozzle 6 when the time measured by the time measuring means 45 reaches a predetermined time. It has a control function that can be controlled to eject water.
  • the predetermined time is a time during which it is determined that the amount of accumulated foreign matter deposited on the inner peripheral surface of the filter 2 that can be estimated from the filtration processing time cannot be removed by the suction of the suction nozzle 4. Is set.
  • this example is provided with a counting means 46 that counts the number of times of the ballast water treatment operation, and the control means 9 has a washing water ejection nozzle when the number of times counted by the counting means 46 reaches a predetermined number.
  • 6 has a control function capable of controlling the washing water to be jetted out.
  • the predetermined number of times is set as the predetermined number of times that it is determined that the amount of foreign matter deposited on the inner peripheral surface of the filter 2 that can be estimated by the number of operations cannot be removed by the suction of the suction nozzle 4.
  • the plurality of control functions of the control means 9 can be made to function simultaneously or selectively.
  • control means 9 of this example has a control function for controlling the rotational speed of the filter 2 based on the differential pressure detected by the differential pressure detection means 8.
  • the initial differential pressure is stored in the control means 9, the allowable differential pressure is set ( ⁇ P1) with respect to the initial differential pressure, and the differential pressure is set in several steps at ⁇ P1 or more.
  • the rotational speed of the filter 2 can be changed according to the differential pressure level.
  • ⁇ P1, ⁇ P2, and ⁇ P3 are set stepwise in the direction of increasing the differential pressure, and in the direction of increasing the rotational speed of the filter 2 in accordance with the set differential pressure.
  • N1, N2, N3, and N4 are set in stages.
  • the rotation speed of the filter 2 is N1, and when the differential pressure exceeds ⁇ P1, the rotation speed is N2, and the differential pressure exceeds ⁇ P2. Then, the rotational speed is controlled to be N3, and when the differential pressure exceeds ⁇ P3, the rotational speed is controlled to be N4. As another example, when the differential pressure is ⁇ P1 or less, the rotation of the filter 2 is stopped. When the differential pressure exceeds ⁇ P1, the rotational speed is N1, and when the differential pressure exceeds ⁇ P2, the rotational speed is N2. When the value exceeds ⁇ P3, the rotational speed may be controlled to be N3.
  • a plurality of suction nozzles 4 are used as the suction nozzles 4 connected to the cleaning sewage collecting pipe 28, and the openings of the suction nozzles 4 slide on the inner peripheral surface of the filter 2.
  • the suction nozzles 4 are arranged in a straight line in the axial direction of the filter 2 and connected to the cleaning sewage collecting pipe 28 in a state where they are in close contact with each other. Therefore, suction from the entire inner peripheral surface of the filter 2 can be performed by one rotation of the filter 2 because the cleaning sewage collecting pipe 28 is alternately arranged on the left and right sides in the height direction.
  • the on-off valve 30 provided in the cleaning sewage discharge pipe 29 is always open during operation, and the pressure on the secondary side of the on-off valve 30 is released to atmospheric pressure.
  • the pressure becomes lower than the pressure on the secondary side of the filter 2, and the treated water on the secondary side of the filter 2 flows into the cleaning sewage collecting pipe 28 as cleaning sewage and is discharged from the cleaning sewage discharge pipe 29 to the outside.
  • a plurality of cleaning water jet nozzles 6 are used as the cleaning water jet nozzles 6 that jet the cleaning water toward the filter 2.
  • the cleaning water jet nozzles 6 are arranged so that the cleaning water can be jetted over the entire axial direction of the filter 2. Since each of the suction nozzles 4 is located on the same circumference and in front of the suction nozzle 4 in a direction opposite to the rotation direction of the filter 2, Since the cleaning water is jetted to the entire outer peripheral surface of the filter 2 by rotation, the foreign matter accumulated on the primary side of the filter 2 can be efficiently peeled off, and suction is performed by the suction nozzle 4 immediately after peeling.
  • the foreign matter separated from the filter 2 by the cleaning water ejected from the cleaning water ejection nozzle 6 is effectively sucked by the suction nozzle 4.
  • the on-off valve 30 provided in the cleaning sewage discharge pipe 29 is always open during operation, and the pressure on the secondary side of the on-off valve 30 is open to the atmospheric pressure. The pressure becomes lower than the pressure on the secondary side of the filter 2, and the treated water on the secondary side of the filter 2 and the washing water ejected from the washing water jet nozzle 6 become washing wastewater and flow into the washing wastewater collecting pipe 28. Then, it is discharged from the cleaning sewage discharge pipe 29 to the outside.
  • the control means 9 in this example causes the washing water to be ejected from the washing water ejection nozzle 6 when the differential pressure detected by the differential pressure detection means 8 reaches a predetermined pressure. 3 and a function of controlling the ejection pressure of the washing water from the washing water ejection nozzle 6 in accordance with the detected differential pressure, as shown in FIG.
  • the pressure on the primary side and the secondary side of the filter 2 is always detected, and the differential pressure L on the primary side and the secondary side of the filter 2 detected by the differential pressure detecting means 8 is set to a differential pressure ⁇ P3 set as a predetermined pressure.
  • the supply of cleaning water to the cleaning water jet nozzle 6 is started and the cleaning water is jetted from the cleaning water jet nozzle 6, and supplied when the differential pressure L returns to ⁇ P3 or less. And stop the flushing of the washing water from the washing water jet nozzle 6 To.
  • the differential pressure L does not become ⁇ P3 or less, and if it rises further, the cleaning water ejection nozzle 6 responds to the differential pressure exceeding the differential pressure ⁇ P3. Increase wash water jet pressure.
  • control means 9 of this example has a control function capable of controlling the washing water jet nozzle 6 to eject cleaning water when the water quality measured by the water quality measuring means 44 reaches the predetermined water quality, and exceeds the predetermined water quality. Since it has a function of controlling the ejection pressure of the washing water from the washing water ejection nozzle 6 according to the quality of the water, when the water quality measured by the water quality measuring means 44 reaches a predetermined quality, the washing water ejection nozzle 6 The cleaning water is started to be supplied, and the cleaning water is jetted from the cleaning water jet nozzle 6. When the water quality returns below the predetermined water quality, the supply is stopped, and the jet of the cleaning water is stopped from the cleaning water jet nozzle 6.
  • the washing water from the washing water jet nozzle 6 depends on the water quality exceeding the predetermined water quality. Increase the jet pressure.
  • the washing water is not ejected from the washing water jet nozzle 6 until the water quality measured by the water quality measuring means 44 reaches the predetermined water quality, waste of the treated water used as the washing water is effectively wasted.
  • the washing from the washing water jet nozzle 6 is performed according to the water quality exceeding the predetermined water quality. Since the water ejection pressure is increased, the foreign matter deposited on the primary side of the filter 2 can be more reliably peeled off.
  • control means 9 of this example has a control function which can be controlled to eject wash water from the wash water ejection nozzle 6 when the time measured by the time measurement means 45 reaches a predetermined time.
  • the control means 9 of this example has a control function which can be controlled to eject wash water from the wash water ejection nozzle 6 when the time measured by the time measurement means 45 reaches a predetermined time.
  • the supply of the washing water to the washing water jet nozzle 6 is started and the washing water is jetted from the washing water jet nozzle 6.
  • waste of the treated water used as the cleaning water is effectively wasted. It can be suppressed.
  • control means 9 of this example has a control function which can be controlled so that washing water is ejected from the washing water ejection nozzle 6 when the number of operations counted by the counting means 46 reaches a predetermined number.
  • the control means 9 of this example has a control function which can be controlled so that washing water is ejected from the washing water ejection nozzle 6 when the number of operations counted by the counting means 46 reaches a predetermined number.
  • the control means 9 of this example has a control function which can be controlled so that washing water is ejected from the washing water ejection nozzle 6 when the number of operations counted by the counting means 46 reaches a predetermined number.
  • a high-pressure fluid ejection nozzle 40 that is provided on the secondary side of the filter 2, opens toward the outer peripheral surface of the filter 2, and ejects high-pressure fluid toward the filter 2, and the high-pressure fluid ejection nozzle 40.
  • a high pressure fluid supply means 41 for supplying a high pressure fluid.
  • Clean water can be ejected as a high-pressure fluid.
  • the high-pressure fluid is ejected from the high-pressure fluid ejection nozzle 40 to the outer peripheral surface of the filter 2 not only after the ballast water treatment operation is completed but also during the ballast water treatment operation, the differential pressure detected by the differential pressure detection means 8 is a predetermined difference.
  • the ballast water treatment operation is stopped, the water in the casing 1 is discharged, and the filter 2 can be rotated.
  • a plurality of high-pressure fluid ejection nozzles 40 can be arranged linearly in the axial direction of the filter 2 and / or at different angles in the circumferential direction, high-pressure fluid can be ejected over the entire outer peripheral surface of the filter 2.
  • the foreign matter accumulated on the primary side of the filter 2 can be surely peeled and removed without leaving.
  • the control means 9 has a control function for controlling the rotational speed of the filter 2 based on the differential pressure detected by the differential pressure detection means 8.
  • the control unit 9 associates the detected differential pressure with a preset differential pressure level based on the differential pressure detected by the differential pressure detection unit 8, and sets the rotation speed of the filter 2 according to the corresponding differential pressure level.
  • the rotational speed of the filter 2 is adjusted such that the rotational speed is changed.
  • the differential pressure detected by the differential pressure detection means 8 exceeds ⁇ P1 and further increases, the rotational speed of the filter 2 is increased stepwise according to the differential pressure set stepwise.
  • the rotational speed of the filter 2 is lowered corresponding to the set pressure difference.
  • the rotation of the filter 2 is returned to the rotation speed set when ⁇ P1 or less, or the rotation speed of the filter 2 is adjusted so as to stop the rotation of the filter 2.
  • the suction length of each nozzle per unit time is increased by increasing the rotational speed of the filter 2, and when the amount is small, the rotational speed of the filter 2 is increased. By reducing the suction length of each nozzle per unit time, or the rotation of the filter 2 is stopped.
  • the degree of contamination of the filter 2 is determined based on the differential pressure between the primary side and the secondary side of the filter 2, and the rotational speed of the filter 2 is controlled based on the differential pressure. Therefore, the rotation of the filter 2 according to the degree of contamination
  • the suction length of the suction nozzle 4 per unit time and the cleaning water jet length of the cleaning water jet nozzle 6 per unit time can be changed with respect to the number, and the foreign matter deposited on the inner peripheral surface of the filter 2 can be effectively removed in a short time. It can be removed, and the rotation of the filter 2 more than necessary can be suppressed.

Landscapes

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

Abstract

L'invention concerne un dispositif de traitement d'eau de ballast ayant un filtre cylindrique (2) qui filtre et refoule de manière externe de l'eau de ballast qui a circulé à travers ce dernier, agencé à l'intérieur d'un boîtier (1). Le dispositif de traitement d'eau de ballast permet au nettoyage de filtre (2) de se produire de manière efficace et efficiente, possède une construction simplifiée, permet une production et un entretien plus simples, et comprend : un moyen de rotation de filtre (3) qui tourne le filtre (2) autour de l'axe central de ce dernier; une buse d'aspiration (4) disposée sur le côté primaire du filtre (2) et s'ouvrant vers la surface circonférentielle interne du filtre (2); une buse de jet d'eau de nettoyage (6) disposée sur le côté secondaire du filtre (2) et projetant de l'eau de nettoyage vers le filtre (2); un moyen d'évacuation d'eaux usées de nettoyage (5) qui refoule, du boîtier (1) vers l'extérieur, des eaux usées de nettoyage aspirées par la buse d'aspiration (4); un moyen de détection de pression différentielle (8) qui détecte la différence de pression entre le côté primaire et le côté secondaire du filtre (2); et un moyen de commande (9) qui commande si de l'eau de nettoyage est projetée ou non, ou commande si de l'eau de nettoyage est projetée ou non et commande la pression de jet d'eau de nettoyage pendant la projection d'eau de nettoyage, sur la base de la différence de pression.
PCT/JP2013/080159 2013-11-07 2013-11-07 Dispositif de traitement d'eau de ballast Ceased WO2015068245A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/080159 WO2015068245A1 (fr) 2013-11-07 2013-11-07 Dispositif de traitement d'eau de ballast

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/080159 WO2015068245A1 (fr) 2013-11-07 2013-11-07 Dispositif de traitement d'eau de ballast

Publications (1)

Publication Number Publication Date
WO2015068245A1 true WO2015068245A1 (fr) 2015-05-14

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PCT/JP2013/080159 Ceased WO2015068245A1 (fr) 2013-11-07 2013-11-07 Dispositif de traitement d'eau de ballast

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Country Link
WO (1) WO2015068245A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105771380A (zh) * 2016-05-23 2016-07-20 三明市缘福生物质科技有限公司 一种污水过滤除污装置
JP2016221432A (ja) * 2015-05-28 2016-12-28 三浦工業株式会社 バラスト水処理装置
DE102015114473A1 (de) * 2015-08-31 2017-03-02 Gea Mechanical Equipment Gmbh Verfahren zur Filtration von Seewasser an Bord eines Schiffes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004141785A (ja) * 2002-10-25 2004-05-20 Amiad Japan:Kk ろ過装置
JP2011251284A (ja) * 2010-02-25 2011-12-15 Sumitomo Electric Ind Ltd 船舶用バラスト水の処理装置および船舶用バラスト水の処理方法
JP2013180666A (ja) * 2012-03-02 2013-09-12 Sumitomo Electric Ind Ltd 船舶用バラスト水の処理システムおよび船舶用バラスト水の処理方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004141785A (ja) * 2002-10-25 2004-05-20 Amiad Japan:Kk ろ過装置
JP2011251284A (ja) * 2010-02-25 2011-12-15 Sumitomo Electric Ind Ltd 船舶用バラスト水の処理装置および船舶用バラスト水の処理方法
JP2013180666A (ja) * 2012-03-02 2013-09-12 Sumitomo Electric Ind Ltd 船舶用バラスト水の処理システムおよび船舶用バラスト水の処理方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016221432A (ja) * 2015-05-28 2016-12-28 三浦工業株式会社 バラスト水処理装置
DE102015114473A1 (de) * 2015-08-31 2017-03-02 Gea Mechanical Equipment Gmbh Verfahren zur Filtration von Seewasser an Bord eines Schiffes
DE102015114473B4 (de) 2015-08-31 2022-02-10 Gea Mechanical Equipment Gmbh Verfahren zur Filtration von Seewasser an Bord eines Schiffes
CN105771380A (zh) * 2016-05-23 2016-07-20 三明市缘福生物质科技有限公司 一种污水过滤除污装置

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