WO2015068245A1 - Ballast water treatment device - Google Patents

Ballast water treatment device 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
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WO
WIPO (PCT)
Prior art keywords
filter
water
cleaning
differential pressure
nozzle
Prior art date
Application number
PCT/JP2013/080159
Other languages
French (fr)
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
Original Assignee
三浦工業株式会社
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 三浦工業株式会社 filed Critical 三浦工業株式会社
Priority to PCT/JP2013/080159 priority Critical patent/WO2015068245A1/en
Publication of WO2015068245A1 publication Critical patent/WO2015068245A1/en

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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.

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Abstract

A ballast water treatment device having a cylindrical filter (2) that filters and externally discharges ballast water that has flowed therein, arranged inside a casing (1). The ballast water treatment device enables the filter (2) cleaning to occur efficiently and effectively, has a simplified construction, enables easier production and maintenance, and comprises: a filter rotation means (3) that rotates the filter (2) around the axis center thereof; a suction nozzle (4) provided on the primary side of the filter (2) and opening towards the inner circumferential surface of the filter (2); a cleaning water jet nozzle (6) provided on the secondary side of the filter (2) and jetting cleaning water towards the filter (2); a cleaning waste water discharge means (5) that discharges, from the casing (1) to outside, cleaning waste water suctioned by the suction nozzle (4); a differential pressure detection means (8) that detects the pressure difference between the primary side and the secondary side of the filter (2); and a control means (9) that controls whether or not cleaning water is jetted or controls whether or not cleaning water is jetted and the cleaning water jet pressure during cleaning water jetting, on the basis of the pressure difference.

Description

バラスト水処理装置Ballast water treatment equipment
　本発明は、内部に流入したバラスト水を濾過処理して外部へ流出させる円筒状のフィルタをケーシング内に配置したバラスト水処理装置に関する。 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.
　タンカー等の船舶において、積み荷の原油等を降ろした後、再度目的地に向けて航行する際、航行中の船舶のバランスを取るため、通常船舶に設けられたバラストタンク内にバラスト水と呼ばれる水を貯留する。バラスト水は基本的に荷上港で取水されて、荷積港で排出されるため、それらの場所が異なっていれば、バラスト水中に含まれるプランクトンや細菌類の微生物が世界中を移動することになる。従って、荷上港と異なる海域の荷積港でバラスト水を排出すると、その港に別の海域の微生物を放出することになり、その海域の生態系を破壊するおそれがある。このバラスト水による海洋環境の破壊を防止するために、国際海事機関（ＩＭＯ）においては、バラスト水管理条約を締結するとともに、バラスト水排出基準として船外に排出されるバラスト水中に含まれる微生物の含有量を規制している。
　このバラスト水排出基準では、プランクトンのサイズにより、５０μｍ以上のプランクトンは１０個体／ｍ３未満、１０～５０μｍのプランクトンは１０個体／ｍｌ未満、とそれぞれ定められており、また、細菌類については、大腸菌類２５０ｃｆｕ／１００ｍｌ未満などと定められている。 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. To store. 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. 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.
In this ballast water discharge standard, plankton of 50 μm or more is determined to be less than 10 individuals / m 3 and plankton of 10 to 50 μm 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.
　このようなことから、バラスト水をバラストタンクに貯留する際に、バラスト水中の微生物を殺滅して無害化処理することが要求されている。バラスト水中の微生物を殺滅して無害化処理する手段として、バラスト水を濾過処理するフィルタをケーシング内に配置したバラスト水処理装置によるバラスト水の濾過と、紫外線照射装置によるバラスト水への紫外線照射とによる処理方式が知られている。この処理方式で用いられるバラスト水処理装置のフィルタにあっては、５０μｍ以上のプランクトンに対して９９．９９％の除去性能が要求されているため、極小目開の金網などによる濾過体を必要としている。そのため、目詰まりが激しく、恒常的なフィルタの洗浄が重要とされている。 For this reason, when ballast water is stored in a ballast tank, it is required that the microorganisms in the ballast water be killed and detoxified. 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. In the filter of the ballast water treatment device used in this treatment method, 99.99% removal performance is required for plankton of 50 μm 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.
　従来、フィルタの内面に堆積している異物を除去するものとして特許文献１には、フィルタ内面に対向した位置で開口する吸引ノズルと、吸引ノズルをフィルタ内面に沿ってフィルタの軸方向および周方向の両方へ移動させるノズル移動手段と、フィルタの外側にあって、吸引ノズルに対向する位置に配置され、逆洗水を吐出する逆洗ノズルと、逆洗ノズルを吸引ノズルに同期して同方向へ移動させる逆洗ノズル移動手段とを備えたろ過装置が記載されている。 Conventionally, as a method for removing foreign matter accumulated on the inner surface of a filter, 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 nozzle moving means for moving both of them, a backwash nozzle that is located outside the filter and that faces the suction nozzle, and discharges backwash water, and the backwash nozzle is synchronized with the suction nozzle in the same direction. A filtration device comprising backwash nozzle moving means for moving to is described.
　特許文献１に記載されたろ過装置によるフィルタの洗浄は、フィルタ内外の差圧が所定圧力以上になったら排泥弁を開き、ノズル移動手段と逆洗ノズル移動手段で吸引ノズルと逆洗ノズルを移動させながら、逆洗ノズルから逆洗水を吐出し、フィルタに堆積している懸濁物を洗浄水で除去し、吸引ノズルから排泥するようにして行われる。 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.
特開２００４－１４１７８５号公報JP 2004-141785 A
　上記の特許文献１に記載されたろ過装置では、フィルタの洗浄は、フィルタ内外の差圧が所定圧力以上になったら行うので、差圧が所定圧力以上になるまでは洗浄は行われないことから、所定圧力値の設定によっては処理水量の低下を招くといった問題があった。
　また、フィルタ内外の差圧のレベル変化と、吸引ノズルと逆洗ノズルがフィルタの軸方向および周方向の両方へ移動する回数とが関連づけられていないので、効率の良い洗浄が行えず、特に、バラスト水処理装置のように、水域によって汚れが異なる水の処理や同一水域でも時間によって汚れが異なる水の処理には適さないといった問題があった。 In the filtering device described in Patent Document 1 above, the filter is washed when the differential pressure inside and outside the filter becomes equal to or higher than a predetermined pressure. Therefore, cleaning is not performed until the differential pressure becomes equal to or higher than the predetermined pressure. Depending on the setting of the predetermined pressure value, there is a problem that the amount of treated water is reduced.
In addition, since the level change of the differential pressure inside and outside the filter and the number of times the suction nozzle and backwash nozzle move both in the axial direction and in the circumferential direction of the filter are not related, efficient cleaning cannot be performed. As in the case of a ballast water treatment device, there is a problem that it is not suitable for treatment of water with different stains depending on the water area, or treatment of water with different stains depending on time even in the same water area.
　また、洗浄にあっては、吸引ノズルと逆洗ノズルをフィルタ内面に沿って旋回させながらフィルタの軸方向に移動するように動作させるため洗浄完了までの時間が長く、フィルタ内外の差圧回復までの時間が長くかかるといった問題があった。
　また、吸引ノズルと逆洗ノズルを同期して旋回させながら軸方向に移動させるため複雑な機構を必要とし、製造やメンテナンスに面倒な作業を要するといった問題があった。 In cleaning, 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. There was a problem that it took a long time.
In addition, there is a problem that 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.
　本発明の目的は、内部に流入したバラスト水を濾過処理して外部へ流出させる円筒状のフィルタの洗浄を効率良く且つ効果的に行えるようにし、また、構成を簡単にし、製造やメンテナンスを容易にしたバラスト水処理装置を提供することにある。 It is an object of the present invention 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.
　上記の目的を達成するために、請求項１に記載の発明は、内部に流入したバラスト水を濾過処理して外部へ流出させる円筒状のフィルタをケーシング内に配置したバラスト水処理装置であって、前記フィルタをその軸心を中心に回転させるフィルタ回転手段と、前記フィルタの一次側に設けられ、前記フィルタの内周面に向かって開口する吸引ノズルと、前記フィルタの二次側に設けられ、前記フィルタに向かって洗浄水を噴出する洗浄水噴出ノズルと、前記吸引ノズルで吸引した洗浄汚水を前記ケーシングから外部へ排出する洗浄汚水排出手段と、前記フィルタの一次側と二次側の差圧を検出する差圧検出手段と、前記差圧検出手段により検出された差圧に基づき洗浄水噴出の有無または洗浄水噴出の有無および洗浄水噴出時の洗浄水噴出圧力を制御する制御手段を備えたことを特徴としているバラスト水処理装置である。 In order to achieve the above object, 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 filter rotating means for rotating the filter around its axis, a suction nozzle provided on the primary side of the filter and opening toward the inner peripheral surface of the filter, and provided on the secondary side of the filter. 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.
　請求項１に記載の発明によれば、前記フィルタの一次側に設けられた前記吸引ノズルが前記フィルタへ堆積した異物を吸引し、そして、前記フィルタの二次側に設けられた前記洗浄水噴出ノズルが前記フィルタに向かって洗浄水を噴出することにより前記フィルタへ堆積した異物を剥離するので、前記フィルタに堆積した異物を効果的に除去することができ、そして、前記洗浄水噴出ノズルによる洗浄水噴出にあっては、前記差圧検出手段により検出された差圧に基づき洗浄水噴出の有無または洗浄水噴出の有無および洗浄水噴出時の洗浄水噴出圧力を制御するので、前記フィルタの効率の良い洗浄が行えるとともに、洗浄水として使用する処理水の排出量の無駄を効果的に抑えることができる。 According to the first aspect of the present invention, 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 In the case of water ejection, 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.
　請求項２に記載の発明は、前記洗浄水噴出ノズルは、前記吸引ノズルと同周上に位置し、且つ、前記フィルタの回転方向に対向する方向に向かって前記吸引ノズルの前に位置するように配置されていることを特徴としている請求項１に記載のバラスト水処理装置である。 According to a second aspect of the present invention, 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 ballast water treatment device according to claim 1, wherein the ballast water treatment device is disposed in the ballast water treatment device.
　請求項２に記載の発明によれば、前記フィルタを回転させながら、前記フィルタの回転方向に対向する方向に向かって前記吸引ノズルの前に前記洗浄水噴出ノズルから前記フィルタの外周面に洗浄水を噴出することにより、前記フィルタの一次側に堆積した異物の効率のよい剥離が行え、そして、剥離した直後に前記吸引ノズルによる吸引が行われるので、異物を効果的に吸引除去することができる。 According to the second aspect of the present invention, while rotating 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. .
　請求項３に記載の発明は、前記フィルタの二次側に設けられ、前記フィルタの外周面に向かって開口し、前記フィルタに向かって高圧流体を噴出する高圧流体噴出ノズルと、前記高圧流体噴出ノズルに高圧流体を供給する高圧流体供給手段を備えたことを特徴としている請求項２に記載のバラスト水処理装置である。 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 The ballast water treatment apparatus according to claim 2, further comprising high-pressure fluid supply means for supplying high-pressure fluid to the nozzle.
　請求項３に記載の発明によれば、バラスト水処理運転終了後、ケーシング内の水を排出し、前記フィルタを回転させながら前記高圧流体噴出ノズルから前記フィルタの外周面に高圧流体を噴出することにより、バラスト水処理運転で前記フィルタの内周面に堆積した異物を剥離し除去することができる。
　また、あらかじめ前記フィルタの一次側と二次側の差圧として所定の差圧を設定しておき、バラスト水処理運転中、前記差圧検出手段により検出された差圧が所定の差圧に達したとき、バラスト水処理運転を停止してケーシング内の水を排出し、前記フィルタを回転させながら前記高圧流体噴出ノズルから前記フィルタの外周面に高圧流体を噴出することにより、バラスト水処理運転で前記フィルタの内周面に堆積した異物を剥離し除去することができる。 According to the invention described in claim 3, after the ballast water treatment operation is completed, 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. Thus, the foreign matter accumulated on the inner peripheral surface of the filter in the ballast water treatment operation can be peeled off and removed.
In addition, 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.
　請求項４に記載の発明は、前記吸引ノズルは、前記フィルタの軸方向に直線状および／または周方向に角度を変えて複数配置されていることを特徴としている請求項２に記載のバラスト水処理装置である。 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.
　請求項４に記載の発明によれば、前記吸引ノズルを前記フィルタに沿って上下動させることなく、前記フィルタの内周面全域から洗浄汚水の吸引を行うことができ、前記フィルタのばらつきのない洗浄を行うことができる。 According to the fourth aspect of the present invention, 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.
　請求項５に記載の発明は、前記高圧流体噴出ノズルは、前記フィルタの軸方向に直線状および／または周方向に角度を変えて複数配置されていることを特徴としている請求項３に記載のバラスト水処理装置である。 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.
　請求項５に記載の発明によれば、前記フィルタの外周面全域に高圧流体を噴出することができ、前記フィルタの一次側に堆積した異物を残すことなく確実に剥離し除去することができる。 According to the fifth aspect of the present invention, 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.
　請求項６に記載の発明は、前記差圧検出手段により検出された差圧に基づき前記フィルタの回転数を制御する制御手段を備えたことを特徴としている請求項１乃至５のいずれか１に記載のバラスト水処理装置である。 According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the 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.
　請求項６に記載の発明によれば、前記差圧検出手段により検出された差圧に基づいて前記フィルタの回転数を制御するので、差圧に応じた前記フィルタの回転数に対して単位時間あたりの前記吸引ノズルの吸引長、前記洗浄水噴出ノズルの洗浄水噴出長を変えることができ、前記フィルタの内周面に堆積している異物を短時間で効果的に除去することができるとともに、前記フィルタの必要以上の回転を抑えることができる。 According to the sixth aspect of the present invention, since 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.
　請求項７に記載の発明は、前記差圧検出手段により検出された差圧が所定圧に達したとき、前記洗浄水噴出ノズルから洗浄水を噴出するようにしたことを特徴としている請求項１乃至５のいずれか１に記載のバラスト水処理装置である。 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.
　請求項７に記載の発明によれば、前記差圧検出手段により検出された差圧が所定圧に達するまでは、前記洗浄水噴出ノズルから洗浄水を噴出しないので、洗浄水として使用する処理水の排出量の無駄を効果的に抑えることができる。 According to the invention described in claim 7, since 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.
　請求項８に記載の発明は、前記ケーシング内に導入される被処理水の水質を計測する水質計測手段を備え、前記水質計測手段により計測された水質が所定水質に達したとき、前記洗浄水噴出ノズルから洗浄水を噴出するようにしたことを特徴としている請求項１乃至５のいずれか１に記載のバラスト水処理装置である。 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.
　請求項８に記載の発明によれば、前記水質計測手段により計測された前記ケーシング内に導入される被処理水の水質により前記フィルタの内周面に堆積する異物の堆積量を推測することができ、前記水質計測手段により計測された水質が所定水質に達するまでは、前記洗浄水噴出ノズルから洗浄水を噴出しないので、洗浄水として使用する処理水の排出量の無駄を効果的に抑えることができる。 According to 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.
　請求項９に記載の発明は、濾過処理時間を計測する時間計測手段を備え、前記時間計測手段により計測された時間が所定時間に達したとき、前記洗浄水噴出ノズルから洗浄水を噴出するようにしたことを特徴としている請求項１乃至５のいずれか１に記載のバラスト水処理装置である。 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.
　請求項９に記載の発明によれば、前記時間計測手段により計測された濾過処理時間により前記フィルタの内周面に堆積する異物の堆積量を推測することができ、前記時間計測手段により計測された時間が所定時間に達するまでは、前記洗浄水噴出ノズルから洗浄水を噴出しないので、洗浄水として使用する処理水の排出量の無駄を効果的に抑えることができる。 According to the ninth aspect of the present invention, 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.
　請求項１０に記載の発明は、バラスト水処理運転の運転回数を計数する計数手段を備え、前記計数手段により計数された運転回数が所定回数に達したとき、前記洗浄水噴出ノズルから洗浄水を噴出するようにしたことを特徴としている請求項１乃至５のいずれか１に記載のバラスト水処理装置である。 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.
　請求項１０に記載の発明によれば、前記計数手段により計数されたバラスト水処理運転の運転回数により前記フィルタの内周面に堆積する異物の堆積量を推測することができ、前記計数手段により計数された運転回数が所定回数に達するまでは、前記洗浄水噴出ノズルから洗浄水を噴出しないので、洗浄水として使用する処理水の排出量の無駄を効果的に抑えることができる。 According to the invention of claim 10, it is possible to estimate the amount of foreign matter accumulated on the inner peripheral surface of the filter from the number of ballast water treatment operations counted by the counting means. 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.
　本発明に係るバラスト水処理装置によれば、バラスト水処理運転に用いるフィルタを確実に、しかも効果的に洗浄することができる。 According to the ballast water treatment apparatus according to the present invention, the filter used for the ballast water treatment operation can be reliably and effectively washed.
本発明に係るバラスト水処理装置の実施の形態の一例を示す概略断面説明図である。It is a schematic sectional explanatory view showing an example of an embodiment of a ballast water treatment device concerning the present invention. 吸引ノズル配置の他例を示す斜視図である。It is a perspective view which shows the other example of suction nozzle arrangement | positioning. フィルタの一次側と二次側の差圧と洗浄水噴出ノズルへの洗浄水の供給との関係を示すグラフである。It is a graph which shows the relationship between the differential pressure | voltage of the primary side of a filter, and a secondary side, and supply of the wash water to a wash water ejection nozzle.
　以下、本発明に係るバラスト水処理装置の実施の形態の一例を図面を参照して詳細に説明する。
　図１は本例の概略断面説明図、図２は吸引ノズル配置の他例を示す斜視図である。 Hereinafter, an example of an embodiment of a ballast water treatment apparatus according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is an explanatory schematic sectional view of this example, and FIG. 2 is a perspective view showing another example of the arrangement of suction nozzles.
　本例のバラスト水処理装置は、円筒状のケーシング１内に配置され、内部に流入した被処理水を濾過して外部へ流出させる円筒状のフィルタ２と、フィルタ２を、その軸心を中心に回転させるフィルタ回転手段３と、フィルタ２の一次側に設けられ、フィルタ２の内周面に向かって開口する吸引ノズル４と、フィルタ２の二次側に設けられ、フィルタ２に向かって洗浄水を噴出する洗浄水噴出ノズル６と、洗浄水噴出ノズル６に洗浄水を加圧供給する洗浄水供給手段７と、吸引ノズル４で吸引した洗浄汚水をケーシング１から外部へ排出する洗浄汚水排出手段５と、フィルタ２の一次側と二次側の差圧を検出する差圧検出手段８と、差圧検出手段８により検出された差圧に基づき洗浄水噴出の有無または洗浄水噴出の有無および洗浄水噴出時の洗浄水噴出圧力を制御する制御手段９を備えている。 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, and 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 And a control unit 9 for controlling the washing water jetting pressure.
　詳細には、ケーシング１は、円筒状に形成され、上部開口部が蓋部１０で、下部開口部が底部１１で密閉されている。蓋部１０には、ケーシング１内のエアを抜くエア抜き弁１２が設けられている。
　ケーシング１内に配置された円筒状のフィルタ２は、その上部開口部が上閉止部１３で密閉され、下部開口部が下閉止部１４および後述する下部回転軸部材１６とでケーシング１とフィルタ２の間に形成される処理水流出空間２７側と隔てられている。フィルタ２にあっては、多数の穴を設けた２枚の金属薄板を円筒形に形成した支持体の間に円筒状に形成した金網などの濾過体を挟んだ構成が好ましいが、多数の穴を設けた金属薄板を円筒形に形成した支持体の外周面に濾過体を設けた構成であってもよい。
　このように構成されたフィルタ２を回転させるフィルタ回転手段３は、フィルタ２の上閉止部１３と下閉止部１４に、フィルタ２の軸心位置に軸心方向に突設して設けた上部回転軸部材１５と下部回転軸部材１６と、上部回転軸部材１５を回転させるモータ１７とで構成されている。 Specifically, 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.
　上部回転軸部材１５はケーシング１の蓋部１０を貫通し、シーリングされた軸受部材１８を介して蓋部１０に回転自在に且つ液密に支持され、下部回転軸部材１６はケーシング１の底部１１を貫通し、シーリングされた軸受部材１９を介して底部１１に回転自在に且つ液密に支持されている。
　下部回転軸部材１６はフィルタ２内と連通する管状体となっており、ケーシング１の底部１１からケーシング１の外に突出する下部回転軸部材１６にケーシング１の被処理水導入口２０が接続されている。被処理水導入口２０には、被処理水導入路２１が接続されている。被処理水導入路２１には、被処理水を圧送するポンプ２２と、ポンプ２２の下流側に位置して開閉弁２３が設けられ、開閉弁２３の下流側の被処理水導入路２１には、排水路２４が接続され、排水路２４には開閉弁２５が設けられている。
　ケーシング１の側部には処理水流出口２６が設けられており、被処理水導入路２１を流れ被処理水導入口２０から導入された被処理水は下部回転軸部材１６を通ってフィルタ２内に入り、フィルタ２を通過し濾過処理されてケーシング１とフィルタ２の間に形成される処理水流出空間２７に入り、処理水流出口２６から流出するようになっている。 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.
　また、吸引ノズル４と、吸引ノズル４で吸引した洗浄汚水をケーシング１から外部へ排出する洗浄汚水排出手段５とにあって、まず、洗浄汚水排出手段５から説明すると、洗浄汚水排出手段５は、吸引ノズル４と接続し、吸引ノズル４で吸引した洗浄汚水が集合する洗浄汚水集合管２８と、洗浄汚水集合管２８に接続し、洗浄汚水を外部へ排出する洗浄汚水排出管２９と、洗浄汚水排出管２９に備えた開閉弁３０とで構成されている。
　洗浄汚水集合管２８は、フィルタ２の軸心に配置され、上端部が閉鎖し、下端部が開口しており、上端部はフィルタ２の上閉止部１３の中央に設けられた穴に軸受部材３１を介して回転自在に嵌合している。また、洗浄汚水集合管２８の下端部はフィルタ２の下閉止部１４の下部回転軸部材１６内を、フィルタ２の回転を妨げないように通り、ケーシング１の被処理水導入口２０に固定されて支持されている。洗浄汚水集合管２８の下端部には洗浄汚水を外部へ排出する洗浄汚水排出管２９が接続されており、洗浄汚水排出管２９には、運転中は常時開いている開閉弁３０が備えられている。 Further, in the suction nozzle 4 and the cleaning sewage discharging means 5 for discharging the cleaning sewage sucked by the suction nozzle 4 from the casing 1 to the outside, the cleaning sewage discharging means 5 will be described first. The cleaning sewage collecting pipe 28 connected to the suction nozzle 4 and collecting the cleaning sewage sucked by the suction nozzle 4, the cleaning sewage discharge pipe 29 connected to the cleaning sewage collecting pipe 28 and discharging the cleaning sewage to the outside, and the cleaning 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.
　洗浄汚水集合管２８と接続しフィルタ２の内周面に向かって開口する吸引ノズル４は、フィルタ２の軸方向全域から吸引可能であることが好ましいが、その構成は特に限定されるものではない。例えば、吸引ノズル４を、フィルタ２の軸方向に直線状および／または周方向に角度を変えて複数配置することができる。周方向に角度を変えて複数配置される吸引ノズル４は、同じ高さに配置しても、或いは高さを変えて配置してもよい。
　本例では、複数の吸引ノズル４が用いられ、フィルタ２の軸方向に直線状に配置されて洗浄汚水集合管２８と接続している。そして、上下に配置されている吸引ノズル４の間の未吸引部を無くすため、本例では、フィルタ２の軸方向に２列に配置され、１方の列の吸引ノズル４の間に他方の列の吸引ノズル４が位置している。具体的には、洗浄汚水集合管２８の左右側に、高さ方向に交互に配置されている。
　吸引ノズル４をフィルタ２の軸方向に配置する他例として、図２に示すように、複数の吸引ノズル４をフィルタ２の軸方向に、吸引ノズル４の間に未吸引部が残らない間隔で螺旋状に配置してもよい。また、フィルタ２の内周面に対向した位置でフィルタ２に向かって開口している吸引ノズル４の開口部は、フィルタ２の内周面に摺動可能に密着している。 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. . For example, 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.
In this example, 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. In order to eliminate the non-suction portion between the suction nozzles 4 arranged above and below, in this example, 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.
As another example of arranging the suction nozzles 4 in the axial direction of the filter 2, as shown in FIG. 2, 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 | position helically. Moreover, 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.
　また、フィルタ２に向かって洗浄水を噴出する洗浄水噴出ノズル６は、ケーシング１の側部に設けられており、ケーシング１内に開口している。
　洗浄水噴出ノズル６は、フィルタ２の軸方向全域に洗浄水を噴出できることが好ましいが、その構成は特に限定されるものではない。例えば、洗浄水噴出ノズル６を、フィルタ２の軸方向に直線状および／または周方向に角度を変えて複数配置することができる。周方向に角度を変えて複数配置される洗浄水噴出ノズル６は、同じ高さに配置しても、或いは高さを変えて配置してもよい。
　本例では、洗浄水噴出ノズル６は、複数配置された各吸引ノズル４と同周上に位置し、且つ、フィルタ２の回転方向に対向する方向に向かって、吸引ノズル４の前に位置するように設けられているが、各吸引ノズル４と対向するそれぞれの位置に設けられていてもよく、または、フィルタ２の回転方向に対向する方向に向かって、吸引ノズル４の後に位置するように設けられていてもよい。 In addition, 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. For example, 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.
In this example, 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.
　洗浄水噴出ノズル６に洗浄水を加圧供給する洗浄水供給手段７は、本例では、洗浄水としてフィルタ２で処理された処理水が使用され、フィルタ２の処理水流出口２６に接続されている処理水路３２の途中に洗浄水供給路３３の一端が接続され、洗浄水供給路３３の他端が各洗浄水噴出ノズル６に接続され、フィルタ２で処理された処理水が洗浄水供給路３３を通って各洗浄水噴出ノズル６に供給されるようになっている。洗浄水供給路３３には、処理水を各洗浄水噴出ノズル６に圧送するポンプ３４と、ポンプ３４の上流側に開閉弁３５が設けられている。また、本例ではポンプ３４の下流側に圧力計３６が設けられているが、必ずしも必要とされるものではない。
　なお、本例では洗浄水としてフィルタ２で処理された処理水が使用されているが、バラストタンク内に貯留された水、他の用途で使用する目的で貯留されている生活用水や飲料水などを洗浄水として使用してもよい。 In this example, 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. In this example, the pressure gauge 36 is provided on the downstream side of the pump 34, but this is not always necessary.
In this example, treated water treated with the filter 2 is used as washing water. However, water stored in the ballast tank, domestic water or drinking water stored for other purposes. May be used as washing water.
　また、フィルタ２の一次側と二次側の差圧を検出する差圧検出手段８は、フィルタ２内と処理水流出空間２７に設けた圧力センサ３７，３８でフィルタ２の一次側と二次側の圧力を検知し、フィルタ２の一次側と二次側の差圧を検出するようになっている。
　フィルタ２の一次側と二次側の差圧はフィルタ２の汚れ具合を判断でき、差圧が大きい場合はフィルタ２への異物の堆積量が多くなっていることを示し、差圧が小さい場合はフィルタ２が初期状態に近い状態であることを示している。 Further, 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.
　さらに、本例では、フィルタ２の二次側に設けられ、フィルタ２の外周面に向かって開口し、フィルタ２に向かって高圧流体を噴出する高圧流体噴出ノズル４０と、高圧流体噴出ノズル４０に高圧流体を供給する高圧流体供給手段４１とを備えている。
　高圧流体噴出ノズル４０は、フィルタ２の軸方向全域に噴出可能であることが好ましいが、その構成は特に限定されるものではない。例えば、高圧流体噴出ノズル４０を、フィルタ２の軸方向に直線状および／または周方向に角度を変えて複数配置することができる。周方向に角度を変えて複数配置される高圧流体噴出ノズル４０は、同じ高さに配置しても、或いは高さを変えて配置してもよい。 Furthermore, in this example, 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. High-pressure fluid supply means 41 for supplying high-pressure fluid.
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. For example, 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.
　高圧流体噴出ノズル４０に供給する高圧流体は、本例では、清浄水が使用されている。清浄水としては、フィルタ２で処理された処理水、バラストタンク内に貯留された水、他の用途で使用する目的で貯留されている生活用水や飲料水などが使用される。
　高圧流体となる清浄水を供給する高圧流体供給手段４１にあっては、タンク３９と高圧流体噴出ノズル４０を清浄水供給路４２で接続し、タンク３９に貯めてある清浄水をポンプ４３で各高圧流体噴出ノズル４０へ圧送するようになっている。
　なお、本例では高圧流体噴出ノズル４０に供給する高圧流体として清浄水が使用されているが、高圧流体が高圧エアであってもよい。この場合、高圧流体供給手段４１は、エアコンプレッサ（図示しない。）により高圧エアを高圧流体噴出ノズル４０に供給する。また、高圧流体が水蒸気であってもよい。 In this example, clean water is used as the high-pressure fluid supplied to the high-pressure fluid ejection nozzle 40. As the 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.
In 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.
In this example, 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. In this case, 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.
　さらに、本例では、制御手段９は、差圧検出手段８により検出された差圧が所定圧に達したとき、洗浄水噴出ノズル６から洗浄水を噴出するように制御できる制御機能と、検出された差圧に応じて、洗浄水噴出ノズル６からの洗浄水の噴出圧力を制御する機能を有している。
　ここでいう所定圧にあっては、フィルタ２への異物の堆積量が吸引ノズル４の吸引では除去しきれないと判断される差圧を所定圧として設定されている。
　本例では、初期差圧が記憶され、初期差圧に対して、図３に示すように、許容される差圧が設定（ΔＰ１）され、ΔＰ１以上で何段階かに差圧が設定されており、ΔＰ３を所定圧として設定して差圧ΔＰ３を超えたら洗浄水噴出ノズル６への洗浄水の供給を開始し、差圧ＬがΔＰ３以下に戻ったら供給を停止するように制御される。
　また、洗浄水噴出ノズル６からの洗浄水の噴出圧力は、差圧ΔＰ３を超えた差圧に応じて高くなるように設定されている。 Furthermore, in this example, the 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.
In this example, the initial differential pressure is stored, the allowable differential pressure is set (ΔP1) with respect to the initial differential pressure (ΔP1), and the differential pressure is set in several steps above ΔP1. Then, when ΔP3 is set as a predetermined pressure and the differential pressure ΔP3 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 ΔP3 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 ΔP3.
　さらに、本例は、ケーシング１内に導入される被処理水の水質を計測する水質計測手段４４を備えており、水質計測手段４４は被処理水導入路２１に設けられている。そして、制御手段９は、水質計測手段４４により計測された水質が所定水質に達したとき、洗浄水噴出ノズル６から洗浄水を噴出するように制御できる制御機能を有している。
　ここでいう所定水質にあっては、ケーシング１内に導入される被処理水の水質により推測できるフィルタ２の内周面に堆積する異物の堆積量が、吸引ノズル４の吸引では除去しきれないと判断される水質を所定水質として設定されている。水質計測手段４４として、例えば、被処理水の濁度を計測する濁度計が使用される。
　また、洗浄水噴出ノズル６からの洗浄水の噴出圧力は、所定水質を超えた水質に応じて高くなるように設定されている。 Furthermore, 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. And 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.
With 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. As 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.
　さらに、本例は、濾過処理時間を計測する時間計測手段４５を備え、そして、制御手段９は、時間計測手段４５により計測された時間が所定時間に達したとき、洗浄水噴出ノズル６から洗浄水を噴出するように制御できる制御機能を有している。
　ここでいう所定時間にあっては、濾過処理時間により推測できるフィルタ２の内周面に堆積する異物の堆積量が、吸引ノズル４の吸引では除去しきれないと判断される時間を所定時間として設定されている。 Furthermore, 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.
In this predetermined time, 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.
　さらに、本例は、バラスト水処理運転の運転回数を計数する計数手段４６を備え、そして、制御手段９は、計数手段４６により計数された運転回数が所定回数に達したとき、洗浄水噴出ノズル６から洗浄水を噴出するように制御できる制御機能を有している。
　ここでいう所定回数にあっては、運転回数により推測できるフィルタ２の内周面に堆積する異物の堆積量が、吸引ノズル４の吸引では除去しきれないと判断される回数を所定回数として設定されている。
　制御手段９が有する上述の複数の制御機能は、同時に或いは選択して機能させることができるようになっている。 Furthermore, 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.
Here, 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. Has been.
The plurality of control functions of the control means 9 can be made to function simultaneously or selectively.
　また、本例の制御手段９は、差圧検出手段８により検出された差圧に基づきフィルタ２の回転数を制御する制御機能を有している。
　この制御機能は、制御手段９に初期差圧が記憶され、初期差圧に対して、許容される差圧が設定（ΔＰ１）され、ΔＰ１以上で何段階かに差圧が設定されており、その差圧レベルに応じてフィルタ２の回転数を変更できるようになっている。
　この制御機能の一例として、差圧を増加する方向に向かってΔＰ１、ΔＰ２、ΔＰ３と段階的に設定し、この設定された差圧に対応してフィルタ２の回転数を増加させる方向に向かってＮ１、Ｎ２、Ｎ３、Ｎ４と段階的に設定し、差圧がΔＰ１以下の場合はフィルタ２の回転数がＮ１に、差圧がΔＰ１を超えたら回転数がＮ２に、差圧がΔＰ２を超えたら回転数がＮ３に、差圧がΔＰ３を超えたら回転数がＮ４になるように制御する。
　また、他例として、差圧がΔＰ１以下の場合はフィルタ２の回転を停止させ、差圧がΔＰ１を超えたら回転数がＮ１に、差圧がΔＰ２を超えたら回転数がＮ２に、差圧がΔＰ３を超えたら回転数がＮ３になるように制御してもよい。 Further, the 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.
In this control function, the initial differential pressure is stored in the control means 9, the allowable differential pressure is set (ΔP1) with respect to the initial differential pressure, and the differential pressure is set in several steps at ΔP1 or more. The rotational speed of the filter 2 can be changed according to the differential pressure level.
As an example of this control function, ΔP1, ΔP2, and ΔP3 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. When the differential pressure is less than ΔP1, the rotation speed of the filter 2 is N1, and when the differential pressure exceeds ΔP1, the rotation speed is N2, and the differential pressure exceeds ΔP2. Then, the rotational speed is controlled to be N3, and when the differential pressure exceeds ΔP3, the rotational speed is controlled to be N4.
As another example, when the differential pressure is ΔP1 or less, the rotation of the filter 2 is stopped. When the differential pressure exceeds ΔP1, the rotational speed is N1, and when the differential pressure exceeds ΔP2, the rotational speed is N2. When the value exceeds ΔP3, the rotational speed may be controlled to be N3.
　このように構成されたバラスト水処理装置では、洗浄汚水集合管２８と接続する吸引ノズル４は、複数の吸引ノズル４が用いられ、吸引ノズル４の開口部はフィルタ２の内周面に摺動可能に密着した状態で、フィルタ２の軸方向に直線状に配置されて洗浄汚水集合管２８と接続しており、上下に配置されている吸引ノズル４は、各吸引ノズル４間の未吸引部を無くすため、洗浄汚水集合管２８の左右側に、高さ方向に交互に配置されているので、フィルタ２の１回の回転でフィルタ２の内周面全域からの吸引が行えることになる。
　そして、洗浄汚水排出管２９に備えられた開閉弁３０は、運転中は常時開いており、開閉弁３０の二次側の圧力は大気圧に解放されているので、洗浄汚水集合管２８内の圧力がフィルタ２の二次側の圧力よりも低くなり、フィルタ２の二次側にある処理水が洗浄汚水となって洗浄汚水集合管２８内に流れ、洗浄汚水排出管２９から外部へ排出される。 In the ballast water treatment apparatus configured as described above, 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. The
　また、フィルタ２に向かって洗浄水を噴出する洗浄水噴出ノズル６は、複数の洗浄水噴出ノズル６が用いられ、フィルタ２の軸方向全域に洗浄水を噴出できるように配置され、複数配置された各吸引ノズル４と同周上に位置し、且つ、フィルタ２の回転方向に対向する方向に向かって、吸引ノズル４の前に位置するように設けられているので、フィルタ２の１回の回転でフィルタ２の外周面全域に洗浄水を噴出することになり、フィルタ２の一次側に堆積した異物の効率のよい剥離が行え、そして、剥離した直後に吸引ノズル４による吸引が行われるので洗浄水噴出ノズル６から噴出した洗浄水でフィルタ２から剥離した異物が吸引ノズル４により効果的に吸引される。
　そして、洗浄汚水排出管２９に備えられた開閉弁３０は、運転中は常時開いており、開閉弁３０の二次側の圧力は大気圧に開放されているので、洗浄汚水集合管２８内の圧力がフィルタ２の二次側の圧力よりも低くなり、フィルタ２の二次側にある処理水および洗浄水噴出ノズル６から噴出した洗浄水が洗浄汚水となって洗浄汚水集合管２８内に流れ、洗浄汚水排出管２９から外部へ排出される。 In addition, 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.
　バラスト水処理の運転中にあっては、本例の制御手段９は、差圧検出手段８により検出された差圧が所定圧に達したとき、洗浄水噴出ノズル６から洗浄水を噴出するように制御できる制御機能と、検出された差圧に応じて洗浄水噴出ノズル６からの洗浄水の噴出圧力を制御する機能を有しているので、図３に示すように、圧力センサ３７，３８でフィルタ２の一次側と二次側の圧力が常に検知され、差圧検出手段８により検出されたフィルタ２の一次側と二次側の差圧Ｌが所定圧として設定された差圧ΔＰ３に達したとき、さらに詳細には、ΔＰ３を超えたら洗浄水噴出ノズル６への洗浄水の供給を開始して洗浄水噴出ノズル６から洗浄水を噴出させ、差圧ＬがΔＰ３以下に戻ったら供給を停止し、洗浄水噴出ノズル６から洗浄水の噴出を停止させる。そして、洗浄水噴出ノズル６から洗浄水が噴出しても、差圧ＬがΔＰ３以下にならず、さらに上昇した場合は、差圧ΔＰ３を超えた差圧に応じて洗浄水噴出ノズル６からの洗浄水の噴出圧力を高くする。
　このように、差圧検出手段８により検出された差圧が所定圧に達するまでは、洗浄水噴出ノズル６から洗浄水を噴出しないので、洗浄水として使用する処理水の排出量の無駄を効果的に抑えられ、そして、洗浄水噴出ノズル６から洗浄水が噴出しても、差圧が低下せず、さらに上昇した場合は、所定圧を超えた差圧に応じて洗浄水噴出ノズル６からの洗浄水の噴出圧力を高くするので、フィルタ２の一次側に堆積した異物をより確実に剥離することができる。 During the operation of the ballast water treatment, 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. Thus, 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 ΔP3 set as a predetermined pressure. More specifically, when ΔP3 is exceeded, 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 ΔP3 or less. And stop the flushing of the washing water from the washing water jet nozzle 6 To. When the cleaning water is ejected from the cleaning water ejection nozzle 6, the differential pressure L does not become ΔP3 or less, and if it rises further, the cleaning water ejection nozzle 6 responds to the differential pressure exceeding the differential pressure ΔP3. Increase wash water jet pressure.
In this way, since the cleaning water is not ejected from the cleaning water ejection nozzle 6 until the differential pressure detected by the differential pressure detecting means 8 reaches a predetermined pressure, waste of the discharged amount of treated water used as the cleaning water is effective. Even if the washing water is ejected from the washing water jet nozzle 6, the differential pressure does not decrease and further rises from the washing water jet nozzle 6 according to the differential pressure exceeding the predetermined pressure. Therefore, the foreign matter deposited on the primary side of the filter 2 can be more reliably peeled off.
　また、本例の制御手段９は、水質計測手段４４により計測された水質が所定水質に達したとき、洗浄水噴出ノズル６から洗浄水を噴出するように制御できる制御機能と、所定水質を超えた水質に応じて洗浄水噴出ノズル６からの洗浄水の噴出圧力を制御する機能を有しているので、水質計測手段４４により計測された水質が所定水質に達したとき洗浄水噴出ノズル６への洗浄水の供給を開始して洗浄水噴出ノズル６から洗浄水を噴出させ、水質が所定水質以下に戻ったら供給を停止し、洗浄水噴出ノズル６から洗浄水の噴出を停止させる。そして、洗浄水噴出ノズル６から洗浄水が噴出しても、水質が所定水質以下にならず、さらに上昇した場合は、所定水質を超えた水質に応じて洗浄水噴出ノズル６からの洗浄水の噴出圧力を高くする。
　このように、水質計測手段４４により計測された水質が所定水質に達するまでは、洗浄水噴出ノズル６から洗浄水を噴出しないので、洗浄水として使用する処理水の排出量の無駄を効果的に抑えられ、そして、洗浄水噴出ノズル６から洗浄水が噴出しても水質が所定水質以下にならず、さらに上昇した場合は、所定水質を超えた水質に応じて洗浄水噴出ノズル６からの洗浄水の噴出圧力を高くするので、フィルタ２の一次側に堆積した異物をより確実に剥離することができる。 Further, the 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. And even if washing water spouts from the washing water jet nozzle 6, if the water quality does not become lower than the predetermined water quality and further rises, the washing water from the washing water jet nozzle 6 depends on the water quality exceeding the predetermined water quality. Increase the jet pressure.
Thus, since 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. When the washing water is ejected from the washing water jet nozzle 6 and the water quality is not lower than the predetermined water quality and further rises, 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.
　また、本例の制御手段９は、時間計測手段４５により計測された時間が所定時間に達したとき、洗浄水噴出ノズル６から洗浄水を噴出するように制御できる制御機能を有しているので、時間計測手段４５により計測された時間が所定時間に達したとき洗浄水噴出ノズル６への洗浄水の供給を開始して洗浄水噴出ノズル６から洗浄水を噴出させる。
　このように、時間計測手段４５により計測された時間が所定時間に達するまでは、洗浄水噴出ノズル６から洗浄水を噴出しないので、洗浄水として使用する処理水の排出量の無駄を効果的に抑えられる。 Moreover, since 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. When the time measured by the time measuring 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.
In this way, since the cleaning water is not ejected from the cleaning water ejection nozzle 6 until the time measured by the time measuring means 45 reaches a predetermined time, waste of the treated water used as the cleaning water is effectively wasted. It can be suppressed.
　また、本例の制御手段９は、計数手段４６により計数された運転回数が所定回数に達したとき、洗浄水噴出ノズル６から洗浄水を噴出するように制御できる制御機能を有しているので、計数手段４６により計数された運転回数が所定回数に達したとき洗浄水噴出ノズル６への洗浄水の供給を開始して洗浄水噴出ノズル６から洗浄水を噴出させる。
　このように、計数手段４６により計数された運転回数が所定回数に達するまでは、洗浄水噴出ノズル６から洗浄水を噴出しないので、洗浄水として使用する処理水の排出量の無駄を効果的に抑えられる。 Moreover, since 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. When the number of operations counted by the counting means 46 reaches a predetermined number, 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.
In this manner, since the cleaning water is not ejected from the cleaning water ejection nozzle 6 until the number of operations counted by the counting means 46 reaches a predetermined number, waste of the discharged water used as the cleaning water is effectively eliminated. It can be suppressed.
　また、本例では、フィルタ２の二次側に設けられ、フィルタ２の外周面に向かって開口し、フィルタ２に向かって高圧流体を噴出する高圧流体噴出ノズル４０と、高圧流体噴出ノズル４０に高圧流体を供給する高圧流体供給手段４１とを備えているので、バラスト水処理運転終了後、排水路２４の開閉弁２５を開き、蓋部１０に設けられているエア抜き弁１２を開いてケーシング１内の水を排出し、高圧流体供給手段４１でタンク３９に貯めてある清浄水を高圧流体噴出ノズル４０へ供給し、フィルタ２を回転させながら高圧流体噴出ノズル４０からフィルタ２の外周面に清浄水を高圧流体として噴出させることができる。
　高圧流体噴出ノズル４０からフィルタ２の外周面への高圧流体の噴出は、バラスト水処理運転終了後だけではなく、バラスト水処理運転中、差圧検出手段８により検出された差圧が所定の差圧に達したとき、バラスト水処理運転を停止してケーシング１内の水を排出し、フィルタ２を回転させながら行うことができる。
　また、高圧流体噴出ノズル４０は、フィルタ２の軸方向に直線状および／または周方向に角度を変えて複数配置することができるので、フィルタ２の外周面全域に高圧流体を噴出することができ、フィルタ２の一次側に堆積した異物を残すことなく確実に剥離し除去することができる。 Further, in this example, 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. And a high pressure fluid supply means 41 for supplying a high pressure fluid. After completion of the ballast water treatment operation, the on-off valve 25 of the drainage channel 24 is opened, and the air vent valve 12 provided on the lid portion 10 is opened to open the casing. 1 is discharged, and the high-pressure fluid supply means 41 supplies clean water stored in the tank 39 to the high-pressure fluid ejection nozzle 40, and rotates the filter 2 from the high-pressure fluid ejection nozzle 40 to the outer peripheral surface of the filter 2. 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. When the pressure is reached, the ballast water treatment operation is stopped, the water in the casing 1 is discharged, and the filter 2 can be rotated.
Further, since 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.
　また、本例では、制御手段９は、差圧検出手段８により検出された差圧に基づきフィルタ２の回転数を制御する制御機能を有している。制御手段９は、差圧検出手段８で検出された差圧に基づいて、検出した差圧を予め設定されている差圧レベルに対応させ、フィルタ２の回転数を対応する差圧レベルに応じた回転数に変更するといった具合にフィルタ２の回転数の調整を行う。
　本例では、差圧検出手段８により検出された差圧がΔＰ１を超え、さらに、差圧が増加する場合は、段階的に設定された差圧に応じてフィルタ２の回転数を段階的に増加させ、差圧が低下した場合は、設定された差圧に対応してフィルタ２の回転数を低下させる。差圧がΔＰ１以下に戻った場合はフィルタ２の回転をΔＰ１以下の場合に設定された回転数に戻し、或いはフィルタ２の回転を停止させるようにフィルタ２の回転数の調整を行うので、フィルタ２の内周面に堆積している異物の量が多い場合はフィルタ２の回転数を増加させることにより単位時間あたりの各ノズルの吸引長が長くなり、そして、少ない場合はフィルタ２の回転数を低下させることにより単位時間あたりの各ノズルの吸引長が短くなり、或いはフィルタ２の回転を停止させる。 In this example, 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.
In this example, when the differential pressure detected by the differential pressure detection means 8 exceeds ΔP1 and further increases, the rotational speed of the filter 2 is increased stepwise according to the differential pressure set stepwise. When the pressure difference is increased and the pressure difference is lowered, the rotational speed of the filter 2 is lowered corresponding to the set pressure difference. When the differential pressure returns to ΔP1 or less, the rotation of the filter 2 is returned to the rotation speed set when ΔP1 or less, or the rotation speed of the filter 2 is adjusted so as to stop the rotation of the filter 2. When the amount of foreign matter accumulated on the inner peripheral surface 2 is large, 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.
　このように、フィルタ２の汚れ具合をフィルタ２の一次側と二次側の差圧で判断し、差圧に基づいてフィルタ２の回転数を制御するので、汚れ具合に応じたフィルタ２の回転数に対して単位時間あたりの吸引ノズル４の吸引長、洗浄水噴出ノズル６の洗浄水噴出長を変えることができ、フィルタ２の内周面に堆積している異物を短時間で効果的に除去することができるとともに、フィルタ２の必要以上の回転を抑えることができる。 In this way, 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.
　本発明は、その精神または主要な特徴から逸脱することなく、他のいろいろな形で実施することができる。そのため、上述の実施の形態若しくは実施例はあらゆる点で単なる例示に過ぎず、限定的に解釈してはならない。本発明の範囲は、請求の範囲によって示すものであって、明細書本文にはなんら拘束されない。さらに、請求の範囲の均等範囲に属する変形や変更は、すべて本発明の範囲内のものである。 The present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-described embodiment or example is merely an example in all respects and should not be interpreted in a limited manner. The scope of the present invention is indicated by the scope of claims, and is not restricted to the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.
１　ケーシング
２　フィルタ
３　フィルタ回転手段
４　吸引ノズル
５　洗浄汚水排出手段
６　洗浄水噴出ノズル
８　差圧検出手段
９　制御手段
２０　被処理水導入口
２６　処理水流出口
２８　洗浄汚水集合管
３７、３８　圧力センサ
４０　高圧流体噴出ノズル
４１　高圧流体供給手段
４４　水質計測手段
４５　時間計測手段
４６　計数手段 DESCRIPTION OF SYMBOLS 1 Casing 2 Filter 3 Filter rotation means 4 Suction nozzle 5 Washing sewage discharge means 6 Washing water ejection nozzle 8 Differential pressure detection means 9 Control means 20 To-be-treated water inlet 26 Treated water outlet 28 Washing sewage collecting pipes 37 and 38 Pressure sensor 40 High pressure fluid ejection nozzle 41 High pressure fluid supply means 44 Water quality measurement means 45 Time measurement means 46 Counting means

Claims (10)

  1. 　内部に流入したバラスト水を濾過処理して外部へ流出させる円筒状のフィルタをケーシング内に配置したバラスト水処理装置であって、
    　前記フィルタをその軸心を中心に回転させるフィルタ回転手段と、前記フィルタの一次側に設けられ、前記フィルタの内周面に向かって開口する吸引ノズルと、前記フィルタの二次側に設けられ、前記フィルタに向かって洗浄水を噴出する洗浄水噴出ノズルと、前記吸引ノズルで吸引した洗浄汚水を前記ケーシングから外部へ排出する洗浄汚水排出手段と、前記フィルタの一次側と二次側の差圧を検出する差圧検出手段と、前記差圧検出手段により検出された差圧に基づき洗浄水噴出の有無または洗浄水噴出の有無および洗浄水噴出時の洗浄水噴出圧力を制御する制御手段を備えたことを特徴とするバラスト水処理装置。     A ballast water treatment device in which a cylindrical filter for filtering the ballast water flowing into the interior and flowing it out is disposed in the casing,
    A filter rotating means for rotating the filter about its axis, a suction nozzle provided on the primary side of the filter and opening toward an inner peripheral surface of the filter, and provided on a secondary side of the filter; A cleaning water jet nozzle that jets 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 differential pressure between the primary side and the secondary side of the filter And a control means for controlling the presence / absence of washing water jetting or the presence / absence of washing water jetting and the washing water jetting pressure at the time of washing water jetting based on the differential pressure detected by the differential pressure detecting means. A ballast water treatment apparatus characterized by that.
  2. 　前記洗浄水噴出ノズルは、前記吸引ノズルと同周上に位置し、且つ、前記フィルタの回転方向に対向する方向に向かって前記吸引ノズルの前に位置するように配置されていることを特徴とする請求項１に記載のバラスト水処理装置。 The washing water ejection nozzle is located on the same circumference as the suction nozzle and is disposed in front of the suction nozzle in a direction opposite to the rotation direction of the filter. The ballast water treatment apparatus according to claim 1.
  3. 　前記フィルタの二次側に設けられ、前記フィルタの外周面に向かって開口し、前記フィルタに向かって高圧流体を噴出する高圧流体噴出ノズルと、前記高圧流体噴出ノズルに高圧流体を供給する高圧流体供給手段を備えたことを特徴とする請求項２に記載のバラスト水処理装置。 A high-pressure fluid ejection nozzle that is provided on the secondary side of the filter, opens toward the outer peripheral surface of the filter, and ejects a high-pressure fluid toward the filter; and a high-pressure fluid that supplies the high-pressure fluid to the high-pressure fluid ejection nozzle The ballast water treatment apparatus according to claim 2, further comprising a supply unit.
  4. 　前記吸引ノズルは、前記フィルタの軸方向に直線状および／または周方向に角度を変えて複数配置されていることを特徴とする請求項２に記載のバラスト水処理装置。 3. The ballast water treatment apparatus according to claim 2, wherein a plurality of the suction nozzles are arranged in a linear shape in the axial direction of the filter and / or at different angles in the circumferential direction.
  5. 　前記高圧流体噴出ノズルは、前記フィルタの軸方向に直線状および／または周方向に角度を変えて複数配置されていることを特徴とする請求項３に記載のバラスト水処理装置。 4. The ballast water treatment apparatus according to claim 3, wherein 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.
  6. 　前記差圧検出手段により検出された差圧に基づき前記フィルタの回転数を制御する制御手段を備えたことを特徴とする請求項１乃至５のいずれか１に記載のバラスト水処理装置。 The ballast water treatment device according to any one of claims 1 to 5, further comprising a control unit that controls the number of rotations of the filter based on the differential pressure detected by the differential pressure detection unit.
  7. 　前記差圧検出手段により検出された差圧が所定圧に達したとき、前記洗浄水噴出ノズルから洗浄水を噴出するようにしたことを特徴とする請求項１乃至５のいずれか１に記載のバラスト水処理装置。 6. The cleaning water according to claim 1, wherein the cleaning water is ejected from the cleaning water ejection nozzle when the differential pressure detected by the differential pressure detection means reaches a predetermined pressure. Ballast water treatment equipment.
  8. 　前記ケーシング内に導入される被処理水の水質を計測する水質計測手段を備え、前記水質計測手段により計測された水質が所定水質に達したとき、前記洗浄水噴出ノズルから洗浄水を噴出するようにしたことを特徴とする請求項１乃至５のいずれか１に記載のバラスト水処理装置。 Water quality measuring means for measuring the quality of the water to be treated introduced into the casing is provided, and when the water quality measured by the water quality measuring means reaches a predetermined water quality, 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.
  9. 　濾過処理時間を計測する時間計測手段を備え、前記時間計測手段により計測された時間が所定時間に達したとき、前記洗浄水噴出ノズルから洗浄水を噴出するようにしたことを特徴とする請求項１乃至５のいずれか１に記載のバラスト水処理装置。 A time measuring means for measuring a filtration processing time is provided, and when the time measured by the time measuring means reaches a predetermined time, washing water is ejected from the washing water ejection nozzle. The ballast water treatment apparatus according to any one of 1 to 5.
  10. 　バラスト水処理運転の運転回数を計数する計数手段を備え、前記計数手段により計数された運転回数が所定回数に達したとき、前記洗浄水噴出ノズルから洗浄水を噴出するようにしたことを特徴とする請求項１乃至５のいずれか１に記載のバラスト水処理装置。 It is provided with a counting means for counting the number of times of ballast water treatment operation, and when the number of times counted by the counting means reaches a predetermined number, 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.
PCT/JP2013/080159 2013-11-07 2013-11-07 Ballast water treatment device WO2015068245A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105771380A (en) * 2016-05-23 2016-07-20 三明市缘福生物质科技有限公司 Sewage filtering and decontaminating device
JP2016221432A (en) * 2015-05-28 2016-12-28 三浦工業株式会社 Ballast water treatment device
DE102015114473A1 (en) * 2015-08-31 2017-03-02 Gea Mechanical Equipment Gmbh Process for the filtration of seawater on board a ship

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JP2004141785A (en) * 2002-10-25 2004-05-20 Amiad Japan:Kk Filtration device
JP2011251284A (en) * 2010-02-25 2011-12-15 Sumitomo Electric Ind Ltd Apparatus and method for treating ballast water for ship
JP2013180666A (en) * 2012-03-02 2013-09-12 Sumitomo Electric Ind Ltd System and method for treating ballast water for ship

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JP2004141785A (en) * 2002-10-25 2004-05-20 Amiad Japan:Kk Filtration device
JP2011251284A (en) * 2010-02-25 2011-12-15 Sumitomo Electric Ind Ltd Apparatus and method for treating ballast water for ship
JP2013180666A (en) * 2012-03-02 2013-09-12 Sumitomo Electric Ind Ltd System and method for treating ballast water for ship

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016221432A (en) * 2015-05-28 2016-12-28 三浦工業株式会社 Ballast water treatment device
DE102015114473A1 (en) * 2015-08-31 2017-03-02 Gea Mechanical Equipment Gmbh Process for the filtration of seawater on board a ship
DE102015114473B4 (en) 2015-08-31 2022-02-10 Gea Mechanical Equipment Gmbh Process for filtration of sea water on board a ship
CN105771380A (en) * 2016-05-23 2016-07-20 三明市缘福生物质科技有限公司 Sewage filtering and decontaminating device

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