WO2014118926A1 - Ballast water treatment device - Google Patents

Ballast water treatment device Download PDF

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Publication number
WO2014118926A1
WO2014118926A1 PCT/JP2013/052156 JP2013052156W WO2014118926A1 WO 2014118926 A1 WO2014118926 A1 WO 2014118926A1 JP 2013052156 W JP2013052156 W JP 2013052156W WO 2014118926 A1 WO2014118926 A1 WO 2014118926A1
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WO
WIPO (PCT)
Prior art keywords
filter
differential pressure
water
ballast water
cleaning
Prior art date
Application number
PCT/JP2013/052156
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 JP2013544614A priority Critical patent/JP6124014B2/en
Priority to PCT/JP2013/052156 priority patent/WO2014118926A1/en
Publication of WO2014118926A1 publication Critical patent/WO2014118926A1/en

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    • 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
    • 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
    • B01D33/48—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
    • 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

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 discharge standard D-2 standard
  • plankton of 50 ⁇ m or more L size
  • S size plankton of 10 to 50 ⁇ m
  • Vibrio cholerae is less than 1 cfu / 100 ml
  • Escherichia coli is less than 250 cfu / 100 ml
  • enterococci are less than 100 cfu / ml.
  • ballast water filtration by a ballast water treatment device in which a cylindrical filter that filters the ballast water that has flowed into the interior and discharges it to the outside is disposed as a means of detoxifying the microorganisms in the ballast water.
  • a processing method using ultraviolet irradiation by an ultraviolet irradiation device provided with an ultraviolet lamp that irradiates ballast water with ultraviolet rays in the filter of the ballast water treatment device used in this treatment method, 99.99% removal performance is required for L size (50 ⁇ m or more) plankton. Need. For this reason, clogging is severe and constant filter cleaning is important.
  • Patent Document 1 discloses a cleaning jet port and a discharge port provided so as to face each other with a filter cylinder built in a filter body, and a filter.
  • a self-cleaning strainer having a synchronous interlocking mechanism that interlocks the rotation of the cylinder and the raising and lowering of the cleaning outlet and the outlet is described.
  • the cleaning of the filter cylinder by the self-cleaning strainer described in Patent Document 1 is performed by first opening the air in the lid of the filter body, rotating the filter cylinder with a synchronous interlocking mechanism, and moving the cleaning outlet and outlet up and down. While moving, cleaning air, pressure oil, pressure water and the like are ejected from the cleaning jet outlet to remove the foreign matter accumulated on the filter cylinder, and the removed foreign matter is discharged from the outlet.
  • Patent Document 2 discloses a suction nozzle that opens at a position facing the filter inner surface, nozzle moving means for moving the suction nozzle along the filter inner surface in both the axial direction and the circumferential direction, and an outer side of the filter.
  • a filtration device comprising a backwash nozzle that is disposed at a position facing the suction nozzle and that discharges backwash water, and a backwash nozzle moving means that moves the backwash nozzle in the same direction in synchronization with the suction nozzle. Is described.
  • the filter is washed by the filtration device described in Patent Document 2 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 backwash nozzle are moved 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.
  • 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 to the outside, and simplifies the configuration and facilitates manufacture 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 filter rotating means for rotating the filter about its axis, and a suction nozzle provided on the primary side of the filter, opening toward the inner peripheral surface of the filter, and continuously sucking from the entire axial direction of the filter;
  • the cleaning sewage discharging means for discharging the cleaning sewage sucked by the suction nozzle to the outside from the casing, the differential pressure detecting means for detecting the differential pressure between the primary side and the secondary side of the filter, and the differential pressure detecting means
  • a ballast water treatment apparatus comprising control means for controlling the rotational speed of the filter based on the differential pressure.
  • the filter rotates once.
  • suction from the entire inner peripheral surface of the filter can be performed, the cleaning time is shortened, and the time until the differential pressure recovery of the filter is shortened.
  • fouling condition is determined based on the differential pressure between the primary side and the secondary side of the filter detected by the differential pressure detecting means, and based on the differential pressure.
  • the suction length per unit time can be changed by changing the rotation speed of the filter according to the degree of dirt, and foreign matter accumulated on the inner peripheral surface of the filter can be removed for a short time. Can be effectively removed. Further, the mechanical operation for cleaning only rotates the filter, and such a structure is much simpler than the structures described in Patent Documents 1 and 2 and is easy to manufacture.
  • the invention according to claim 2 is characterized in that a plurality of the suction nozzles are arranged linearly in the axial direction of the filter or at different angles in the circumferential direction so as to be suckable from the entire axial direction of the filter.
  • a plurality of the suction nozzles are arranged in a linear or circumferential direction in the axial direction of the filter so as to be suckable from the entire axial direction of the filter. Without moving the suction nozzle up and down along the filter, cleaning sewage can be sucked from the entire area in the filter axial direction, and cleaning without variations in the filter can be performed.
  • a cleaning water jet nozzle that jets cleaning water toward the suction nozzle at a position facing the suction nozzle across the filter is provided on the secondary side of the filter, and the difference
  • the cleaning water is ejected from the cleaning water ejection nozzle to rotate.
  • the foreign matter accumulated on the inner peripheral surface of the filter can be easily peeled off, and the peeled foreign matter can be absorbed by the suction nozzle, so that the filter can be efficiently cleaned.
  • the differential pressure of the filter returns to a predetermined differential pressure or less, the ejection of the cleaning water from the cleaning water ejection nozzle is stopped, so that waste of the discharge amount of the treated water used as the cleaning water is effectively suppressed. be able to.
  • a cleaning water jet nozzle that jets cleaning water toward the suction nozzle at a position facing the suction nozzle across the filter is provided on the secondary side of the filter, and the difference 2.
  • the cleaning water is ejected from the cleaning water ejection nozzle, and the differential pressure is also a predetermined difference.
  • the foreign matter accumulated on the inner peripheral surface of the rotating filter is more effectively adjusted by adjusting the ejection pressure of the washing water ejected from the washing water ejection nozzle according to the differential pressure level when the pressure is exceeded. Since the peeled foreign matter can be sucked by the suction nozzle, efficient cleaning of the filter can be performed in a short time. Further, when the differential pressure returns to a predetermined differential pressure or less, since the ejection of the washing water from the washing water ejection nozzle is stopped, it is possible to effectively suppress the waste of the treated water used as the washing water. .
  • a cleaning water jet nozzle that jets cleaning water toward the suction nozzle at a position facing the suction nozzle across the filter is provided on the secondary side of the filter, and the difference
  • the ballast water treatment apparatus according to claim 2 further comprising a control unit that controls the presence or absence of the washing water jet based on the differential pressure detected by the pressure detection unit.
  • the cleaning water when the differential pressure detected by the differential pressure detection means exceeds a predetermined differential pressure, the cleaning water is ejected from the washing water ejection nozzle to rotate.
  • the foreign matter accumulated on the inner peripheral surface of the filter can be easily peeled off, and the peeled foreign matter can be absorbed by the suction nozzle, so that the filter can be efficiently cleaned.
  • the differential pressure of the filter returns to a predetermined differential pressure or less, the ejection of the cleaning water from the cleaning water ejection nozzle is stopped, so that waste of the discharge amount of the treated water used as the cleaning water is effectively suppressed. be able to.
  • a cleaning water jet nozzle that jets cleaning water toward the suction nozzle at a position facing the suction nozzle across the filter is provided on the secondary side of the filter, and the difference 3.
  • a ballast water treatment apparatus according to claim 2, further comprising a control means for controlling the presence / absence of the washing water jet and the washing water jet pressure when the washing water is jetted based on the differential pressure detected by the pressure detecting means. It is.
  • the cleaning water is ejected from the cleaning water ejection nozzle, and the differential pressure is also a predetermined difference.
  • the foreign matter accumulated on the inner peripheral surface of the rotating filter is more effectively adjusted by adjusting the ejection pressure of the washing water ejected from the washing water ejection nozzle according to the differential pressure level when the pressure is exceeded. Since the peeled foreign matter can be sucked by the suction nozzle, efficient cleaning of the filter can be performed in a short time. Further, when the differential pressure returns to a predetermined differential pressure or less, since the ejection of the washing water from the washing water ejection nozzle is stopped, it is possible to effectively suppress the waste of the treated water used as the washing water. .
  • a seventh aspect of the present invention when the differential pressure detected by the differential pressure detection means reaches a preset limit differential pressure, the ballast water treatment operation is stopped, the water in the casing is discharged, and the cleaning is performed.
  • the ballast water treatment apparatus according to any one of claims 3, 4, 5 and 6, wherein washing water is ejected from a water ejection nozzle.
  • the ballast water treatment operation is stopped and the water in the casing is discharged, Since the washing water is jetted from the washing water jet nozzle, the washing effect of the filter can be further enhanced.
  • the invention according to claim 8 is provided on the secondary side of the filter, opens toward the outer peripheral surface of the filter at a position not facing the suction nozzle, and ejects high-pressure fluid in the entire axial direction of the filter.
  • the ballast water treatment apparatus according to any one of claims 1 to 7, further comprising a high-pressure fluid ejection nozzle and high-pressure fluid supply means for supplying a high-pressure fluid to the high-pressure fluid ejection nozzle.
  • the water in the casing is discharged, and the high pressure fluid is discharged from the high pressure fluid ejection nozzle to the entire axial direction of the outer peripheral surface of the filter while rotating the filter.
  • the foreign matter deposited on the inner peripheral surface of the filter in the ballast water treatment operation can be peeled off and removed.
  • the ballast water treatment operation when the differential pressure detected by the differential pressure detection means reaches a preset limit differential pressure, the ballast water treatment operation is stopped and the water in the casing is discharged, and the filter is By ejecting the high-pressure fluid from the high-pressure fluid ejection nozzle to the entire axial direction of the outer peripheral surface of the filter while rotating, foreign matter accumulated on the inner peripheral surface of the filter can be peeled off and removed in the ballast water treatment operation. .
  • the invention according to claim 9 is characterized in that a plurality of the high-pressure fluid ejection nozzles are arranged linearly in the axial direction of the filter or at different angles in the circumferential direction so as to be ejected in the entire axial direction of the filter.
  • a plurality of the high-pressure fluid ejection nozzles are arranged in a linear or circumferential direction in the axial direction of the filter so as to be ejected over the entire axial direction of the filter.
  • the high-pressure fluid can be ejected over the entire outer peripheral surface of the filter, and can be reliably peeled off and removed without leaving foreign matter deposited on the primary side of the filter.
  • 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 cleaning sewage discharging means 5 for discharging the cleaning sewage sucked by the suction nozzle 4 to the outside from the casing 1 and the second side of the filter 2 are disposed on the suction nozzle 4 at a position facing the suction nozzle 4 across the filter 2.
  • the cleaning water jet nozzle 6 that jets the cleaning water toward the cleaning water
  • the cleaning water supply means 7 that supplies the cleaning water to the cleaning water jet nozzle 6 under pressure
  • the difference that detects the differential pressure between the primary side and the secondary side of the filter 2 Pressure A detecting means 8, and a control unit 9 for controlling the rotational speed of the filter 2, based on the detected differential pressure by the differential pressure detecting means 8.
  • 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 configuration of the suction nozzle 4 connected to the cleaning sewage collecting pipe 28 is not particularly limited as long as the suction nozzle 4 can suck from the entire axial direction of the filter 2.
  • a plurality of suction nozzles 4 may be used, and a plurality of suction nozzles 4 may be arranged linearly in the axial direction of the filter 2 or at different angles in the circumferential direction so as to be suckable from the entire axial direction of the filter 2.
  • 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.
  • 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 washing water jet nozzle 6 that jets the washing water toward the suction nozzle 4 is provided on each side of the casing 1 so as to face each of the plurality of the suction nozzles 4.
  • the washing water is ejected toward the suction nozzle 4.
  • 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.
  • the clean water 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.
  • the control means 9 for controlling the rotation speed of the filter 2 based on the differential pressure detected by the differential pressure detection means 8 stores the initial differential pressure, and sets an allowable differential pressure for the initial differential pressure ( ⁇ P1), and the differential pressure is set in several steps at ⁇ P1 or more, and has a control function of changing the rotational speed of the filter 2 in accordance with 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.
  • control unit 9 sets ( ⁇ Pn) as the differential pressure that is determined that the accumulated amount of the foreign matter on the filter 2 cannot be removed by the suction of the suction nozzle 4 as the limit differential pressure.
  • ⁇ Pn the differential pressure detected by the pressure detection means 8 reaches the limit differential pressure ⁇ Pn
  • the pump 22 provided in the treated water introduction path 21 is stopped, and the on-off valve 23 is positioned downstream of the pump 22.
  • a jet nozzle 40 and high-pressure fluid supply means 41 for supplying a high-pressure fluid to the high-pressure fluid jet nozzle 40 are provided.
  • the configuration of the high-pressure fluid ejection nozzle 40 is not particularly limited as long as it can be ejected over the entire axial direction of the filter.
  • a plurality of high-pressure fluid ejection nozzles 40 may be used, and a plurality of high-pressure fluid ejection nozzles 40 are arranged in a linear or circumferential direction in the axial direction of the filter 2 so that the plurality of high-pressure fluid ejection nozzles 40 can be ejected in the entire axial direction of the filter 2. May be.
  • a plurality of high-pressure fluid ejection nozzles 40 are spiraled in the axial direction of the filter 2 at intervals that do not leave an uninjected portion between the high-pressure fluid ejection nozzles 40. You may arrange in a shape.
  • clean water is used as the high-pressure fluid supplied to the high-pressure fluid ejection nozzle 40.
  • clean water water stored in a 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 supplies high-pressure air to the high-pressure fluid ejection nozzle 40 by an air compressor (not shown).
  • a plurality of suction nozzles 4 are used as the suction nozzle 4 connected to the cleaning sewage collecting pipe 28, and the opening of the suction nozzle 4 is slidable on the inner surface of the filter 2.
  • the suction nozzles 4 arranged in a straight line in the axial direction of the filter 2 are connected to the cleaning sewage collecting pipe 28, and the suction nozzles 4 arranged above and below eliminate the unsucked portions between the suction nozzles 4. Therefore, since it is alternately arranged in the height direction on the left and right sides of the cleaning sewage collecting pipe 28, suction from the entire inner peripheral surface of the filter 2 can be performed by one rotation of the filter 2.
  • 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 29 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 pressure sensors 37 and 38 always detect the primary and secondary pressures of the filter 2, and the differential pressure detection means 8 detects the differential pressure and transmits it to the control means 9. Is done.
  • the control unit 9 associates the detected differential pressure with a preset differential pressure level based on the differential pressure between the primary side and the secondary side of the filter 2 detected by the differential pressure detection unit 8, and The rotational speed of the filter 2 is adjusted such that the rotational speed is changed to a rotational speed corresponding to the corresponding differential pressure level.
  • 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 decreased corresponding to the set differential pressure, and when the differential pressure returns to ⁇ P1 or less, the rotation of the filter 2 is set when it is ⁇ P1 or less.
  • the rotation speed of the filter 2 is adjusted so that the rotation speed is returned to the original rotation speed, or the rotation of the filter 2 is stopped. Is increased, the suction length per unit of time is lengthened, and when it is small, the rotational speed of the filter 2 is decreased to shorten the suction length per unit of time, or the rotation of the filter 2 is stopped.
  • the pressure difference detected by the pressure difference detecting means 8 exceeds the pressure difference set stepwise in the direction of increasing and reaches the limit pressure difference ⁇ Pn, it is provided in the treated water introduction passage 21.
  • the open / close valve 23 is closed on the downstream side of the pump 22, and the open / close valve 25 of the drainage channel 24 connected to the treated water introduction channel 21.
  • the air vent valve 12 provided in the lid 10 is opened to discharge the water in the casing 1, and the water stored in the ballast tank is used for other purposes while the filter 2 continues to rotate.
  • Purified water such as domestic water or drinking water stored for the purpose is ejected from the washing water ejection nozzle 6 as washing water.
  • the on-off valve 25 of the drainage channel 24 is opened, the air vent valve 12 provided on the lid 10 is opened, the water in the casing 1 is discharged, and the high-pressure fluid supply
  • the clean water stored in the tank 39 by means 43 is supplied to the high-pressure fluid jet nozzle 40, and the clean water is jetted from the high-pressure fluid jet nozzle 40 to the entire axial direction of the outer peripheral surface of the filter 2 while rotating the filter 2. it can.
  • the ejection of clean water from the high-pressure fluid ejection nozzle 40 to the outer peripheral surface of the filter 2 is not limited to after the ballast water treatment operation is completed, but the differential pressure detected by the differential pressure detection means 8 during the ballast water treatment operation is the critical differential pressure. Can reach the ballast water treatment operation.
  • suction from the entire inner peripheral surface of the filter 2 can be performed by one rotation of the filter 2, and the time until cleaning is completed can be shortened.
  • 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 rotational speed of the filter 2 corresponding to the degree of dirt is set.
  • the suction length per unit time can be changed, foreign matters accumulated on the inner peripheral surface of the filter 2 can be effectively removed in a short time, and the rotation of the filter 2 more than necessary can be suppressed. it can.
  • the differential pressure detected by the differential pressure detection means 8 is the critical difference.
  • the ballast water treatment operation is stopped, the water in the casing 1 is discharged, and the cleaning water is ejected from the cleaning water ejection nozzle 6, so that the cleaning effect of the filter 2 can be further enhanced.
  • the water in the casing 1 is discharged, and the clean water is ejected from the high-pressure fluid ejection nozzle 40 to the outer peripheral surface of the filter 2 while rotating the filter 2.
  • the foreign matter accumulated on the inner peripheral surface of the filter 2 by the processing operation can be peeled off and removed.
  • ballast water treatment apparatus of this example has the same basic configuration as that of the first example, and the only difference is the control means. Therefore, the basic configuration is different with reference to FIG. The control means will be described.
  • the control means 9 provided in this example is configured so that, in addition to the control function of the control means 9 of the first example, if the differential pressure exceeds ⁇ P1 set in the first example, the difference set in stages Corresponding to the pressure, the rotational speed of the filter 2 is increased stepwise in accordance with the increase in the differential pressure, and the rotational speed of the filter 2 is made to correspond to the differential pressure increased from ⁇ P1 by two steps, and the differential pressure must still decrease. For example, the supply of the washing water to the washing water jet nozzle 6 is started, and the supply is stopped if the pressure falls below the differential pressure increased by two steps from ⁇ P1, and even if the washing water is supplied to the washing water jet nozzle 6, the differential pressure is further increased.
  • FIG. 3 is a graph showing the differential pressure and whether or not the cleaning water is supplied to the cleaning water jet nozzle 6.
  • the pressure sensors 37 and 38 always detect the primary and secondary pressures of the filter 2 during the operation of the filter, and are detected by the differential pressure detection means 8.
  • the rotational speed of the filter 2 is increased stepwise in response to the differential pressure that is set stepwise from ⁇ P1 in the increasing direction, and the rotational speed of the filter 2 is increased from ⁇ P1 to the differential pressure increased by two steps. If the differential pressure still does not decrease, the supply of the cleaning water to the cleaning water jet nozzle 6 is started, and the supply is stopped if the differential pressure decreases from ⁇ P1 by two steps.
  • the differential pressure further increases even if the cleaning water is supplied to the cleaning water jet nozzle 6, the rotational speed of the filter 2 is further increased, and if the differential pressure still increases, it is determined as the limit differential pressure, Stop ballast water treatment operation. Then, as in the first example, with the filter 2 kept rotating, the on-off valve 23 is closed on the downstream side of the pump 22 and the drainage channel 24 connected to the treated water introduction channel 21 is opened and closed. Open the valve 25, open the air vent valve 12 provided in the lid 10, discharge the water in the casing 1, continue the rotation of the filter 2, water stored in the ballast tank, for other uses Clean water stored for the purpose of use, such as domestic water and drinking water, is jetted from the wash water jet nozzle 6 as wash water.
  • 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.
  • the differential pressure exceeds a predetermined differential pressure
  • the cleaning water is ejected from the cleaning water ejection nozzle 6 toward the suction nozzle 4, so that foreign matter accumulated on the inner peripheral surface of the rotating filter 2.
  • this example stops the ballast water treatment operation when the differential pressure detected by the differential pressure detecting means 8 reaches the limit differential pressure ⁇ Pn during the ballast water treatment operation, and the casing 1 The inside water is discharged and the washing water is ejected from the washing water jet nozzle 6, so that the washing effect of the filter 2 can be further enhanced.
  • ballast water treatment apparatus of this example has the same basic configuration as that of the first example, and the only difference is the control means. Therefore, the basic configuration is different with reference to FIG. The control means will be described.
  • the control means 9 provided in this example is combined with the control function of the control means 9 of the first example, and when the differential pressure exceeds ⁇ P1 set in the first example, the washing water to the washing water jet nozzle 6
  • the control function that functions to stop the supply when the differential pressure returns to ⁇ P1 or less, and the differential pressure is set stepwise when the differential pressure is equal to or greater than ⁇ P1, and the wash water jets according to the differential pressure level
  • the supply pressure (spout amount) of the cleaning water to the cleaning water jet nozzle 6 is changed and the differential pressure exceeds ⁇ P1, the cleaning water supply pressure to the cleaning water jet nozzle 6 is large.
  • a control function that functions to reduce the supply pressure of the cleaning water to the cleaning water jet nozzle 6 when the differential pressure is small.
  • the limit differential pressure is set ( ⁇ Pn) as in the first example, and when the differential pressure reaches the limit differential pressure ⁇ Pn, a control function is provided that functions to stop the ballast water treatment operation. Yes. Then, when the ballast water treatment operation is stopped, clean water is ejected as washing water from the washing water ejection nozzle 6 as in the first example.
  • ⁇ P1, ⁇ P2, ⁇ P3, ⁇ P4, and ⁇ Pn are set stepwise in the direction in which the differential pressure is applied, and the filter 2 rotates in accordance with the set differential pressure.
  • N1, N2, N3, and N4 are set in stages in the direction of increasing the number, and in steps of P1, P2, and P3 in the direction of increasing the supply pressure of the cleaning water to the cleaning water jet nozzle 6
  • the rotation speed of the filter 2 is set to N1
  • the rotational speed is set to N2
  • the supply pressure of the cleaning water to the cleaning water jet nozzle 6 is set to P2.
  • the rotational speed is set to N3
  • the pressure sensors 37 and 38 always detect the primary and secondary pressures of the filter 2 during the operation of the filter, and are detected by the differential pressure detection means 8.
  • the differential pressure exceeds ⁇ P1
  • the supply of cleaning water to the cleaning water jet nozzle 6 is started as in the second example, and the adjustment is performed to stop the supply when the differential pressure returns to ⁇ P1 or less.
  • the cleaning water is ejected from the cleaning water ejection nozzle 6 toward the suction nozzle 4, and when the amount is small, the ejection of the cleaning water is stopped.
  • the degree of contamination of the filter 2 is determined by the differential pressure between the primary side and the secondary side of the filter 2, and the filter is based on the differential pressure.
  • the differential pressure exceeds a predetermined differential pressure
  • the cleaning water is ejected from the cleaning water ejection nozzle 6 toward the suction nozzle 4, and the differential pressure exceeds the predetermined differential pressure.
  • the foreign matter accumulated on the inner peripheral surface of the rotating filter 2 is more effectively peeled off by adjusting the jet pressure of the wash water ejected from the wash water jet nozzle 6 according to the differential pressure level when Since the separated foreign matter can be sucked by the suction nozzle 4, efficient cleaning of the filter 2 can be performed in a short time. Furthermore, when the differential pressure returns to a predetermined differential pressure or less, since the ejection of the washing water from the washing water ejection nozzle 6 is stopped, waste of the discharged amount of the treated water used as the washing water can be effectively suppressed. .
  • this example stops the ballast water treatment operation when the differential pressure detected by the differential pressure detecting means 8 reaches the limit differential pressure ⁇ Pn during the ballast water treatment operation, and the casing 1 The inside water is discharged and the washing water is ejected from the washing water jet nozzle 6, so that the washing effect of the filter 2 can be further enhanced.

Abstract

In order to obtain a ballast water treatment device which enables the efficient and effective cleaning of a cylindrical filter for performing filtration treatment on ballast water that has flowed thereinto and discharging the ballast water to the outside, and achieves a simple configuration, and easy manufacturing and maintenance, a ballast water treatment device in which a cylindrical filter (2) for performing filtration treatment on ballast water that has flowed thereinto and discharging the ballast water to the outside is disposed in a casing (1) is provided with: a filter rotation means (3) which rotates the filter (2) about the axis thereof; a suction nozzle (4) which is provided on the primary side of the filer (2), is open to the inner peripheral surface of the filter (2), and always performs suctioning from the whole area in the axial direction of the filter (2); a cleaning waste water discharge means (5) which discharges cleaning waste water sucked by the suction nozzle (4) from the casing (1) to the outside; a differential pressure detection means (8) which detects a differential pressure between the primary side and the secondary side of the filter (2); and a control means (9) which controls the number of rotations of the filter (2) on the basis of the differential pressure detected by the differential pressure detection means (8).

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（Ｄ－２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。
　バラスト水排出基準（Ｄ－２基準）では、プランクトンのサイズにより、５０μｍ以上（Ｌサイズ）のプランクトンは１０個／ｍ３未満、１０～５０μｍ（Ｓサイズ）のプランクトンは１０個／ｍｌ未満、とそれぞれ定められており、また、細菌類についてはコレラ菌１ｃｆｕ／１００ｍｌ未満、大腸菌２５０ｃｆｕ／１００ｍｌ未満、腸球菌１００ｃｆｕ／ｍｌ未満と定められている。 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 convention and ballast water discharged outside the ship as the ballast water discharge standard (D-2 standard). It regulates the content of microorganisms contained in water.
According to the ballast water discharge standard (D-2 standard), plankton of 50 μm or more (L size) is less than 10 pieces / m 3 , and plankton of 10 to 50 μm (S size) is less than 10 pieces / ml, depending on the plankton size. For bacteria, it is determined that Vibrio cholerae is less than 1 cfu / 100 ml, Escherichia coli is less than 250 cfu / 100 ml, and enterococci are less than 100 cfu / 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、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よるバラスト水の濾過と、バラスト水に紫外線を照射する紫外線ランプを備えた紫外線照射装置による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、Ｌサイズ（５０μｍ以上）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 cylindrical filter that filters the ballast water that has flowed into the interior and discharges it to the outside is disposed as a means of detoxifying the microorganisms in the ballast water. In addition, there is known a processing method using ultraviolet irradiation by an ultraviolet irradiation device provided with an ultraviolet lamp that irradiates ballast water with ultraviolet rays. In the filter of the ballast water treatment device used in this treatment method, 99.99% removal performance is required for L size (50 μm or more) plankton. Need. 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、濾し器本体に内蔵した濾し筒を挟んで対峙するように設けられた清掃用噴出口と排出口と、濾し筒の回転と清掃用噴出口および排出口の昇降とを連動して行わせる同調連動機構を備えた自己清掃型濾し器が記載されている。
　特許文献１に記載された自己清掃型濾し器による濾し筒の洗浄は、まず、濾し器本体の蓋に空気抜きを開き、同調連動機構で濾し筒を回転させるとともに清掃用噴出口と排出口を上下動させながら、清掃用噴出口から清掃用空気、圧力油、圧力水等を噴出させて濾し筒に堆積した夾雑物を除去し、除去した夾雑物を排出口から排出するようにして行われる。 Conventionally, as a method for removing foreign matter accumulated on the inner surface of a filter, Patent Document 1 discloses a cleaning jet port and a discharge port provided so as to face each other with a filter cylinder built in a filter body, and a filter. A self-cleaning strainer having a synchronous interlocking mechanism that interlocks the rotation of the cylinder and the raising and lowering of the cleaning outlet and the outlet is described.
The cleaning of the filter cylinder by the self-cleaning strainer described in Patent Document 1 is performed by first opening the air in the lid of the filter body, rotating the filter cylinder with a synchronous interlocking mechanism, and moving the cleaning outlet and outlet up and down. While moving, cleaning air, pressure oil, pressure water and the like are ejected from the cleaning jet outlet to remove the foreign matter accumulated on the filter cylinder, and the removed foreign matter is discharged from the outlet.
　また、特許文献２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。
　特許文献２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。 Patent Document 2 discloses a suction nozzle that opens at a position facing the filter inner surface, nozzle moving means for moving the suction nozzle along the filter inner surface in both the axial direction and the circumferential direction, and an outer side of the filter. A filtration device comprising a backwash nozzle that is disposed at a position facing the suction nozzle and that discharges backwash water, and a backwash nozzle moving means that moves the backwash nozzle in the same direction in synchronization with the suction nozzle. Is described.
The filter is washed by the filtration device described in Patent Document 2 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 backwash nozzle are moved 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.
実公昭４４－３７３９号公報Japanese Utility Model Publication No. 44-3739 特開２００４－１４１７８５号公報JP 2004-141785 A
　上記の特許文献１記載された自己清掃型濾し器では、濾し筒の洗浄は濾し器本体の蓋に空気抜きを開いて行うので、濾過処理運転が停止しているときに行われることになる。このため、途切れずに濾過処理が求められる場合には濾し筒の洗浄が行えないといった問題があった。また、洗浄にあっては、濾し筒を回転させながら、濾し筒を挟んで対峙する清掃用噴出口と排出口とを、濾し筒に沿って昇降するように動作させるため、洗浄完了までの時間が長くかかるといった問題があった。また、濾し筒の回転と清掃用噴出口および排出口の昇降とを連動して行わせる構造は複雑となり製造に面倒な作業を要するといった問題があった。 In the self-cleaning strainer described in the above-mentioned Patent Document 1, the filter tube is washed by opening the air filter lid of the strainer body, so that the filtration operation is stopped. For this reason, there has been a problem that the filter tube cannot be washed when the filtration process is required without interruption. In cleaning, the cleaning nozzle and the discharge port facing each other across the filter cylinder are operated so as to move up and down along the filter cylinder while rotating the filter cylinder. There was a problem that it took a long time. Further, the structure in which the rotation of the filter cylinder and the raising and lowering of the cleaning outlet and the discharge outlet are interlocked with each other is complicated and requires a troublesome work for manufacturing.
　また、特許文献２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き、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。
　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。 Further, in the filtration device described in Patent Document 2, since the cleaning of the filter is performed when the differential pressure inside and outside the filter becomes a predetermined pressure or higher, the cleaning is not performed until the differential pressure becomes a predetermined pressure or higher. Depending on the setting of the predetermined pressure value, the amount of treated water is reduced, and the change in the differential pressure level inside and outside the filter is associated with the number of times the suction nozzle and backwash nozzle move both in the axial direction and in the circumferential direction of the filter. Therefore, there is a problem that efficient cleaning cannot be performed, and in particular, it is not suitable for the treatment of water having different stains depending on the water area or the treatment of water having different stains depending on the time even in the same water area as in the case of a ballast water treatment device. It was.
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。 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 to the outside, and simplifies the configuration and facilitates manufacture 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、前記フィルタ内周面に向かって開口し、前記フィルタの軸方向全域から常時吸引する吸引ノズルと、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、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 about its axis, and a suction nozzle provided on the primary side of the filter, opening toward the inner peripheral surface of the filter, and continuously sucking from the entire axial direction of the filter; The cleaning sewage discharging means for discharging the cleaning sewage sucked by the suction nozzle to the outside from the casing, the differential pressure detecting means for detecting the differential pressure between the primary side and the secondary side of the filter, and the differential pressure detecting means A ballast water treatment apparatus comprising control means for controlling the rotational speed of the filter based on the differential 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前記フィルタに向かって開口した吸引ノズルは、前記フィルタの軸方向全域から吸引可能としたので、前記フィルタの一回の回転で前記フィルタの内周面全域からの吸引が行えることになり、洗浄時間を短くし、フィルタの差圧回復までの時間が短くなる。
　また、前記差圧検出手段により検出された前記フィルタの一次側と二次側の差圧で前記フィルタへ堆積した異物の堆積程度（以下、汚れ具合という。）を判断し、前記差圧に基づいて前記フィルタの回転数を制御するので、汚れ具合に応じた前記フィルタの回転数にして単位時間あたりの吸引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。
　また、洗浄のための機械的動作は前記フィルタを回転させるだけであり、かかる構造は前記特許文献１，２に記載の構造に比べ遙かに簡単であり、製造が容易である。 According to the first aspect of the present invention, since the suction nozzle provided on the primary side of the filter and opening toward the filter can suck from the entire axial direction of the filter, the filter rotates once. Thus, suction from the entire inner peripheral surface of the filter can be performed, the cleaning time is shortened, and the time until the differential pressure recovery of the filter is shortened.
Further, the degree of foreign matter accumulated on the filter (hereinafter referred to as “fouling condition”) is determined based on the differential pressure between the primary side and the secondary side of the filter detected by the differential pressure detecting means, and based on the differential pressure. Since the rotation speed of the filter is controlled, the suction length per unit time can be changed by changing the rotation speed of the filter according to the degree of dirt, and foreign matter accumulated on the inner peripheral surface of the filter can be removed for a short time. Can be effectively removed.
Further, the mechanical operation for cleaning only rotates the filter, and such a structure is much simpler than the structures described in Patent Documents 1 and 2 and is easy to manufacture.
　請求項２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全域から吸引可能に前記フィルタの軸方向に直線状あるい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１に記載のバラスト水処理装置である。 The invention according to claim 2 is characterized in that a plurality of the suction nozzles are arranged linearly in the axial direction of the filter or at different angles in the circumferential direction so as to be suckable from the entire axial direction of the filter. The ballast water treatment apparatus according to claim 1.
　請求項２に記載の発明によれば、前記吸引ノズルは、前記フィルタの軸方向全域から吸引可能に前記フィルタの軸方向に直線状あるいは周方向に角度を変えて複数配置されているので、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、前記フィルタ軸方向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 invention of claim 2, a plurality of the suction nozzles are arranged in a linear or circumferential direction in the axial direction of the filter so as to be suckable from the entire axial direction of the filter. Without moving the suction nozzle up and down along the filter, cleaning sewage can be sucked from the entire area in the filter axial direction, and cleaning without variations in the filter can be performed.
 　請求項３に記載の発明は、前記フィルタの二次側に、前記フィルタを挟んで前記吸引ノズルと対向する位置で前記吸引ノズルに向かって洗浄水を噴出する洗浄水噴出ノズルを設け、前記差圧検出手段により検出された差圧に基づき前記洗浄水噴出の有無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に記載のバラスト水処理装置である。 According to a third aspect of the present invention, a cleaning water jet nozzle that jets cleaning water toward the suction nozzle at a position facing the suction nozzle across the filter is provided on the secondary side of the filter, and the difference The ballast water treatment apparatus according to claim 1, further comprising a control unit that controls whether or not the washing water is ejected based on a differential pressure detected by a pressure detection unit.
　請求項３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差圧を超えた場合、前記洗浄水噴出ノズルから洗浄水を噴出させることにより、回転している前記フィルタの内周面に堆積している異物を容易に剥離させることができ、剥離した異物は前記吸引ノズルで吸収することができるので、前記フィルタの効率の良い洗浄が行える。さらに、前記フィルタの差圧が所定差圧以下に戻った場合、前記洗浄水噴出ノズルからの洗浄水の噴出を停止させるので、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 a third aspect of the present invention, when the differential pressure detected by the differential pressure detecting means exceeds a predetermined differential pressure, the cleaning water is ejected from the cleaning water ejection nozzle to rotate. The foreign matter accumulated on the inner peripheral surface of the filter can be easily peeled off, and the peeled foreign matter can be absorbed by the suction nozzle, so that the filter can be efficiently cleaned. Further, when the differential pressure of the filter returns to a predetermined differential pressure or less, the ejection of the cleaning water from the cleaning water ejection nozzle is stopped, so that waste of the discharge amount of the treated water used as the cleaning water is effectively suppressed. be able to.
　請求項４に記載の発明は、前記フィルタの二次側に、前記フィルタを挟んで前記吸引ノズルと対向する位置で前記吸引ノズルに向かって洗浄水を噴出する洗浄水噴出ノズルを設け、前記差圧検出手段により検出された差圧に基づき前記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請求項１に記載のバラスト水処理装置である。 According to a fourth aspect of the present invention, a cleaning water jet nozzle that jets cleaning water toward the suction nozzle at a position facing the suction nozzle across the filter is provided on the secondary side of the filter, and the difference 2. The ballast water treatment apparatus according to claim 1, further comprising a control means for controlling the presence or absence of the washing water jet and the washing water jet pressure when the washing water is jetted based on the differential pressure detected by the pressure detecting means. It is.
　請求項４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差圧を超えた場合、前記洗浄水噴出ノズルから洗浄水を噴出させ、併せて差圧が所定差圧を超えた場合の差圧レベルに応じて洗浄水噴出ノズルから噴出する洗浄水の噴出圧力を調整することにより、回転している前記フィルタの内周面に堆積している異物を一層効果的に剥離させることができ、剥離した異物は前記吸引ノズルで吸引することができるので、前記フィルタの効率の良い洗浄が短い時間で行える。さらに、差圧が所定差圧以下に戻った場合、前記洗浄水噴出ノズルからの洗浄水の噴出を停止させるので、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 fourth aspect of the present invention, when the differential pressure detected by the differential pressure detection means exceeds a predetermined differential pressure, the cleaning water is ejected from the cleaning water ejection nozzle, and the differential pressure is also a predetermined difference. The foreign matter accumulated on the inner peripheral surface of the rotating filter is more effectively adjusted by adjusting the ejection pressure of the washing water ejected from the washing water ejection nozzle according to the differential pressure level when the pressure is exceeded. Since the peeled foreign matter can be sucked by the suction nozzle, efficient cleaning of the filter can be performed in a short time. Further, when the differential pressure returns to a predetermined differential pressure or less, since the ejection of the washing water from the washing water ejection nozzle is stopped, it is possible to effectively suppress the waste of the treated water used as the washing water. .
　請求項５に記載の発明は、前記フィルタの二次側に、前記フィルタを挟んで前記吸引ノズルと対向する位置で前記吸引ノズルに向かって洗浄水を噴出する洗浄水噴出ノズルを設け、前記差圧検出手段により検出された差圧に基づき前記洗浄水噴出の有無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２に記載のバラスト水処理装置である。 According to a fifth aspect of the present invention, a cleaning water jet nozzle that jets cleaning water toward the suction nozzle at a position facing the suction nozzle across the filter is provided on the secondary side of the filter, and the difference The ballast water treatment apparatus according to claim 2, further comprising a control unit that controls the presence or absence of the washing water jet based on the differential pressure detected by the pressure detection unit.
　請求項５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差圧を超えた場合、前記洗浄水噴出ノズルから洗浄水を噴出させることにより、回転している前記フィルタの内周面に堆積している異物を容易に剥離させることができ、剥離した異物は前記吸引ノズルで吸収することができるので、前記フィルタの効率の良い洗浄が行える。さらに、前記フィルタの差圧が所定差圧以下に戻った場合、前記洗浄水噴出ノズルからの洗浄水の噴出を停止させるので、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 5, when the differential pressure detected by the differential pressure detection means exceeds a predetermined differential pressure, the cleaning water is ejected from the washing water ejection nozzle to rotate. The foreign matter accumulated on the inner peripheral surface of the filter can be easily peeled off, and the peeled foreign matter can be absorbed by the suction nozzle, so that the filter can be efficiently cleaned. Further, when the differential pressure of the filter returns to a predetermined differential pressure or less, the ejection of the cleaning water from the cleaning water ejection nozzle is stopped, so that waste of the discharge amount of the treated water used as the cleaning water is effectively suppressed. be able to.
　請求項６に記載の発明は、前記フィルタの二次側に、前記フィルタを挟んで前記吸引ノズルと対向する位置で前記吸引ノズルに向かって洗浄水を噴出する洗浄水噴出ノズルを設け、前記差圧検出手段により検出された差圧に基づき前記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請求項２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, a cleaning water jet nozzle that jets cleaning water toward the suction nozzle at a position facing the suction nozzle across the filter is provided on the secondary side of the filter, and the difference 3. A ballast water treatment apparatus according to claim 2, further comprising a control means for controlling the presence / absence of the washing water jet and the washing water jet pressure when the washing water is jetted based on the differential pressure detected by the pressure detecting means. It is.
　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が所定差圧を超えた場合、前記洗浄水噴出ノズルから洗浄水を噴出させ、併せて差圧が所定差圧を超えた場合の差圧レベルに応じて洗浄水噴出ノズルから噴出する洗浄水の噴出圧力を調整することにより、回転している前記フィルタの内周面に堆積している異物を一層効果的に剥離させることができ、剥離した異物は前記吸引ノズルで吸引することができるので、前記フィルタの効率の良い洗浄が短い時間で行える。さらに、差圧が所定差圧以下に戻った場合、前記洗浄水噴出ノズルからの洗浄水の噴出を停止させるので、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 sixth aspect of the present invention, when the differential pressure detected by the differential pressure detection means exceeds a predetermined differential pressure, the cleaning water is ejected from the cleaning water ejection nozzle, and the differential pressure is also a predetermined difference. The foreign matter accumulated on the inner peripheral surface of the rotating filter is more effectively adjusted by adjusting the ejection pressure of the washing water ejected from the washing water ejection nozzle according to the differential pressure level when the pressure is exceeded. Since the peeled foreign matter can be sucked by the suction nozzle, efficient cleaning of the filter can be performed in a short time. Further, when the differential pressure returns to a predetermined differential pressure or less, since the ejection of the washing water from the washing water ejection nozzle is stopped, it is possible to effectively suppress the waste of the treated water used as the washing water. .
　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あらかじめ設定した限界差圧に達したとき、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３，４，５または６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 seventh aspect of the present invention, when the differential pressure detected by the differential pressure detection means reaches a preset limit differential pressure, the ballast water treatment operation is stopped, the water in the casing is discharged, and the cleaning is performed. The ballast water treatment apparatus according to any one of claims 3, 4, 5 and 6, wherein washing water is ejected from a water ejection nozzle.
　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あらかじめ設定した限界差圧に達したとき、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、前記洗浄水噴出ノズルから洗浄水を噴出するようにしたので、前記フィルタの洗浄効果を一層高めることができる。 According to the invention of claim 7, when the differential pressure detected by the differential pressure detection means reaches a preset differential pressure limit, the ballast water treatment operation is stopped and the water in the casing is discharged, Since the washing water is jetted from the washing water jet nozzle, the washing effect of the filter can be further enhanced.
　請求項８に記載の発明は、前記フィルタの二次側に設けられ、前記吸引ノズルと対峙しない位置で前記フィルタ外周面に向かって開口し、前記フィルタの軸方向全域に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１乃至７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 on the secondary side of the filter, opens toward the outer peripheral surface of the filter at a position not facing the suction nozzle, and ejects high-pressure fluid in the entire axial direction of the filter. The ballast water treatment apparatus according to any one of claims 1 to 7, further comprising a high-pressure fluid ejection nozzle and high-pressure fluid supply means for supplying a high-pressure fluid to the high-pressure fluid ejection nozzle.
　請求項８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の軸方向全域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、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あらかじめ設定した限界差圧に達したとき、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の軸方向全域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 eighth aspect of the present invention, after the ballast water treatment operation is finished, the water in the casing is discharged, and the high pressure fluid is discharged from the high pressure fluid ejection nozzle to the entire axial direction of the outer peripheral surface of the filter while rotating the filter. The foreign matter deposited on the inner peripheral surface of the filter in the ballast water treatment operation can be peeled off and removed. Further, during the ballast water treatment operation, when the differential pressure detected by the differential pressure detection means reaches a preset limit differential pressure, the ballast water treatment operation is stopped and the water in the casing is discharged, and the filter is By ejecting the high-pressure fluid from the high-pressure fluid ejection nozzle to the entire axial direction of the outer peripheral surface of the filter while rotating, foreign matter accumulated on the inner peripheral surface of the filter can be peeled off and removed in the ballast water treatment operation. .
　請求項９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全域に噴出可能に前記フィルタの軸方向に直線状あるい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８に記載のバラスト水処理装置である。 The invention according to claim 9 is characterized in that a plurality of the high-pressure fluid ejection nozzles are arranged linearly in the axial direction of the filter or at different angles in the circumferential direction so as to be ejected in the entire axial direction of the filter. The ballast water treatment device according to claim 8.
　請求項９に記載の発明によれば、前記高圧流体噴出ノズルは、前記フィルタの軸方向全域に噴出可能に前記フィルタの軸方向に直線状あるいは周方向に角度を変えて複数配置されているので、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 ninth aspect of the present invention, a plurality of the high-pressure fluid ejection nozzles are arranged in a linear or circumferential direction in the axial direction of the filter so as to be ejected over the entire axial direction of the filter. The high-pressure fluid can be ejected over the entire outer peripheral surface of the filter, and can be reliably peeled off and removed without leaving foreign matter deposited on the primary side of the filter.
　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。
　まず、本発明に係るバラスト水処理装置の実施の形態の第１例を図１、図２により説明する。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.
First, a first example of an embodiment of a ballast water treatment apparatus according to the present invention will be described with reference to FIGS. 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の内面に対向した位置でフィルタ２に向かって開口し、フィルタ２の軸方向全域から常時吸引する吸引ノズル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、フィルタ２の二次側に配置され、フィルタ２を挟んで吸引ノズル４と対向する位置で吸引ノズル４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、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フィルタ２の回転数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. A filter rotating means 3 for rotating the filter 2; a suction nozzle 4 provided on the primary side of the filter 2; opening toward the filter 2 at a position facing the inner surface of the filter 2; The cleaning sewage discharging means 5 for discharging the cleaning sewage sucked by the suction nozzle 4 to the outside from the casing 1 and the second side of the filter 2 are disposed on the suction nozzle 4 at a position facing the suction nozzle 4 across the filter 2. The cleaning water jet nozzle 6 that jets the cleaning water toward the cleaning water, the cleaning water supply means 7 that supplies the cleaning water to the cleaning water jet nozzle 6 under pressure, and the difference that detects the differential pressure between the primary side and the secondary side of the filter 2. Pressure A detecting means 8, and a control unit 9 for controlling the rotational speed of the filter 2, based on the detected differential pressure by the differential pressure detecting means 8.
　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ればその構成は特に限定されるものではない。たとえば、吸引ノズル４は複数用いてもよく、複数の吸引ノズル４をフィルタ２の軸方向全域から吸引可能にフィルタ２の軸方向に直線状あるいは周方向に角度を変えて複数配置してもよい。
　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。
　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の内面に摺動可能に密着している。 The configuration of the suction nozzle 4 connected to the cleaning sewage collecting pipe 28 is not particularly limited as long as the suction nozzle 4 can suck from the entire axial direction of the filter 2. For example, a plurality of suction nozzles 4 may be used, and a plurality of suction nozzles 4 may be arranged linearly in the axial direction of the filter 2 or at different angles in the circumferential direction so as to be suckable from the entire axial direction of the filter 2. .
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.
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. Further, the opening of the suction nozzle 4 that opens toward the filter 2 at a position facing the inner surface of the filter 2 is slidably in close contact with the inner surface of the filter 2.
　また、吸引ノズル４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、複数配置された各吸引ノズル４と対向するそれぞれの位置に設けられており、ケーシング１内に開口し、吸引ノズル４に向かって洗浄水を噴出するように構成されている。
　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の清浄水を洗浄水として使用してもよい。 Further, the washing water jet nozzle 6 that jets the washing water toward the suction nozzle 4 is provided on each side of the casing 1 so as to face each of the plurality of the suction nozzles 4. The washing water is ejected toward the suction nozzle 4.
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. The clean water 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.
　また、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手段９は、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の回転数を変更する制御機能を有している。
　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。 The control means 9 for controlling the rotation speed of the filter 2 based on the differential pressure detected by the differential pressure detection means 8 stores the initial differential pressure, and sets an allowable differential pressure for the initial differential pressure ( ΔP1), and the differential pressure is set in several steps at ΔP1 or more, and has a control function of changing the rotational speed of the filter 2 in accordance with 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.
　さらに、本例では、制御手段９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が限界差圧として設定（ΔＰｎ）されており、差圧検出手段８により検出された差圧が限界差圧ΔＰｎに達したとき、被処理水導入路２１に設けられているポンプ２２を停止させ、ポンプ２２の下流側に位置して開閉弁２３を閉じ、被処理水導入路２１に接続されている排水路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、フィルタ２の回転を続けながら、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の清浄水を洗浄水として洗浄水噴出ノズル６から噴出させる制御機能を有している。 Further, in this example, the control unit 9 sets (ΔPn) as the differential pressure that is determined that the accumulated amount of the foreign matter on the filter 2 cannot be removed by the suction of the suction nozzle 4 as the limit differential pressure. When the differential pressure detected by the pressure detection means 8 reaches the limit differential pressure ΔPn, the pump 22 provided in the treated water introduction path 21 is stopped, and the on-off valve 23 is positioned downstream of the pump 22. Close and open the open / close valve 25 of the drainage channel 24 connected to the treated water introduction channel 21, open the air vent valve 12 provided in the lid 10 to discharge the water in the casing 1, A control function that causes water stored in the ballast tank and water used for other purposes, such as domestic water and drinking water, to be jetted from the washing water jet nozzle 6 as washing water while continuing to rotate. Have.
　さらに、本例では、フィルタ２の二次側に設けられ、吸引ノズル４と対峙しない位置でフィルタ２の外周面に向かって開口し、フィルタ２の軸方向全域に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、フィルタの軸方向全域に噴出可能であればその構成は特に限定されるものではない。たとえば、高圧流体噴出ノズル４０は複数用いてもよく、複数の高圧流体噴出ノズル４０をフィルタ２の軸方向全域に噴出可能にフィルタ２の軸方向に直線状あるいは周方向に角度を変えて複数配置してもよい。
　高圧流体噴出ノズル４０をフィルタ２の軸方向に配置する他例として、複数の高圧流体噴出ノズル４０をフィルタ２の軸方向に、高圧流体噴出ノズル４０の間に未噴出部が残らない間隔で螺旋状に配置してもよい。 Further, in this example, the high-pressure fluid that is provided on the secondary side of the filter 2 and opens toward the outer peripheral surface of the filter 2 at a position not facing the suction nozzle 4 and ejects high-pressure fluid in the entire axial direction of the filter 2. A jet nozzle 40 and high-pressure fluid supply means 41 for supplying a high-pressure fluid to the high-pressure fluid jet nozzle 40 are provided.
The configuration of the high-pressure fluid ejection nozzle 40 is not particularly limited as long as it can be ejected over the entire axial direction of the filter. For example, a plurality of high-pressure fluid ejection nozzles 40 may be used, and a plurality of high-pressure fluid ejection nozzles 40 are arranged in a linear or circumferential direction in the axial direction of the filter 2 so that the plurality of high-pressure fluid ejection nozzles 40 can be ejected in the entire axial direction of the filter 2. May be.
As another example of disposing the high-pressure fluid ejection nozzles 40 in the axial direction of the filter 2, a plurality of high-pressure fluid ejection nozzles 40 are spiraled in the axial direction of the filter 2 at intervals that do not leave an uninjected portion between the high-pressure fluid ejection nozzles 40. You may arrange in a shape.
　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、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のが使用される。
　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。 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, water stored in a 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 supplies high-pressure air to the high-pressure fluid ejection nozzle 40 by an air compressor (not shown).
　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の一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２９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 nozzle 4 connected to the cleaning sewage collecting pipe 28, and the opening of the suction nozzle 4 is slidable on the inner surface of the filter 2. In close contact with each other, the suction nozzles 4 arranged in a straight line in the axial direction of the filter 2 are connected to the cleaning sewage collecting pipe 28, and the suction nozzles 4 arranged above and below eliminate the unsucked portions between the suction nozzles 4. Therefore, since it is alternately arranged in the height direction on the left and right sides of the cleaning sewage collecting pipe 28, suction from the entire inner peripheral surface of the filter 2 can be performed by one rotation of the filter 2.
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 29 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
　濾過器の運転中にあっては、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によりその差圧が検出されて制御手段９に送信される。制御手段９は、差圧検出手段８で検出されたフィルタ２の一次側と二次側の差圧に基づいて、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。 During the operation of the filter, the pressure sensors 37 and 38 always detect the primary and secondary pressures of the filter 2, and the differential pressure detection means 8 detects the differential pressure and transmits it to the control means 9. Is done. The control unit 9 associates the detected differential pressure with a preset differential pressure level based on the differential pressure between the primary side and the secondary side of the filter 2 detected by the differential pressure detection unit 8, and The rotational speed of the filter 2 is adjusted such that the rotational speed is changed to a rotational speed corresponding to the corresponding differential pressure level.
　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、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の内周面に体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時間単位あたり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時間単位あたり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, 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 differential pressure decreases, the rotational speed of the filter 2 is decreased corresponding to the set differential pressure, and when the differential pressure returns to ΔP1 or less, the rotation of the filter 2 is set when it is ΔP1 or less. The rotation speed of the filter 2 is adjusted so that the rotation speed is returned to the original rotation speed, or the rotation of the filter 2 is stopped. Is increased, the suction length per unit of time is lengthened, and when it is small, the rotational speed of the filter 2 is decreased to shorten the suction length per unit of time, or the rotation of the filter 2 is stopped.
　また、差圧検出手段８により検出された差圧が増加する方向に向かって段階的に設定された差圧を超え、限界差圧ΔＰｎに達したとき、被処理水導入路２１に設けられているポンプ２２を停止し、フィルタ２の回転を続けた状態で、ポンプ２２の下流側に位置して開閉弁２３を閉じ、被処理水導入路２１に接続されている排水路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、フィルタ２の回転を続けながら、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の清浄水を洗浄水として洗浄水噴出ノズル６から噴出させる。 Further, when the pressure difference detected by the pressure difference detecting means 8 exceeds the pressure difference set stepwise in the direction of increasing and reaches the limit pressure difference ΔPn, it is provided in the treated water introduction passage 21. In the state where the pump 22 is stopped and the filter 2 continues to rotate, the open / close valve 23 is closed on the downstream side of the pump 22, and the open / close valve 25 of the drainage channel 24 connected to the treated water introduction channel 21. , The air vent valve 12 provided in the lid 10 is opened to discharge the water in the casing 1, and the water stored in the ballast tank is used for other purposes while the filter 2 continues to rotate. Purified water such as domestic water or drinking water stored for the purpose is ejected from the washing water ejection nozzle 6 as washing water.
　また、本例では、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４３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の外周面の軸方向全域に清浄水を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の外周面への清浄水の噴出は、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限界差圧に達したとき、バラスト水処理運転を停止して行うことができる。 Further, in this example, after the ballast water treatment operation is completed, the on-off valve 25 of the drainage channel 24 is opened, the air vent valve 12 provided on the lid 10 is opened, the water in the casing 1 is discharged, and the high-pressure fluid supply The clean water stored in the tank 39 by means 43 is supplied to the high-pressure fluid jet nozzle 40, and the clean water is jetted from the high-pressure fluid jet nozzle 40 to the entire axial direction of the outer peripheral surface of the filter 2 while rotating the filter 2. it can.
The ejection of clean water from the high-pressure fluid ejection nozzle 40 to the outer peripheral surface of the filter 2 is not limited to after the ballast water treatment operation is completed, but the differential pressure detected by the differential pressure detection means 8 during the ballast water treatment operation is the critical differential pressure. Can reach the ballast water treatment operation.
　このように、本例のバラスト水処理装置によれば、フィルタ２の一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り、洗浄完了までの時間を短くすることができる。また、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の回転数にして単位時間あたりの吸引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。 As described above, according to the ballast water treatment apparatus of this example, suction from the entire inner peripheral surface of the filter 2 can be performed by one rotation of the filter 2, and the time until cleaning is completed can be shortened. . Further, 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 rotational speed of the filter 2 corresponding to the degree of dirt is set. Thus, the suction length per unit time can be changed, foreign matters accumulated on the inner peripheral surface of the filter 2 can be effectively removed in a short time, and the rotation of the filter 2 more than necessary can be suppressed. it can.
　また、本例では、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くなったとき、すなわち、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限界差圧ΔＰｎ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、洗浄水噴出ノズル６から洗浄水を噴出するので、フィルタ２の洗浄効果を一層高めることができる。
　また、本例では、バラスト水処理運転終了後、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噴出することにより、バラスト水処理運転でフィルタ２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。 Further, in this example, when the amount of foreign matter accumulated on the filter 2 cannot be completely removed by the suction of the suction nozzle 4, that is, during the ballast water treatment operation, the differential pressure detected by the differential pressure detection means 8 is the critical difference. When the pressure ΔPn is reached, the ballast water treatment operation is stopped, the water in the casing 1 is discharged, and the cleaning water is ejected from the cleaning water ejection nozzle 6, so that the cleaning effect of the filter 2 can be further enhanced.
Further, in this example, after the ballast water treatment operation is completed, the water in the casing 1 is discharged, and the clean water is ejected from the high-pressure fluid ejection nozzle 40 to the outer peripheral surface of the filter 2 while rotating the filter 2. The foreign matter accumulated on the inner peripheral surface of the filter 2 by the processing operation can be peeled off and removed.
　つぎに、本発明に係るバラスト水処理装置の実施の形態の第２例を説明する。
　本例のバラスト水処理装置は、基本構成が第１例と同じであり、異なる点は制御手段だけなので、基本構成にあっては第１例の概略断面図を示す図１を援用し、異なる制御手段について説明する。 Next, a second example of the embodiment of the ballast water treatment apparatus according to the present invention will be described.
The ballast water treatment apparatus of this example has the same basic configuration as that of the first example, and the only difference is the control means. Therefore, the basic configuration is different with reference to FIG. The control means will be described.
　本例に備えられた制御手段９は、第１例の制御手段９が有する制御機能に併せて、差圧が第１例で設定されているΔＰ１を超えた場合、段階的に設定された差圧に対応して、フィルタ２の回転数を差圧の増加に応じて段階的に増加させ、ΔＰ１から２段階増加した差圧までフィルタ２の回転数を対応させ、それでも差圧が低下しなければ洗浄水噴出ノズル６への洗浄水の供給を開始し、ΔＰ１から２段階増加した差圧より低下すれば供給を停止し、洗浄水噴出ノズル６へ洗浄水を供給しても更に差圧が上昇したら、さらにフィルタ２の回転数を増加させ、それでも差圧が上昇したら、限界差圧と判定し、バラスト水処理運転を停止させるように機能する制御機能を備えている。そして、バラスト水処理運転を停止させたら、第１例と同様に、洗浄水噴出ノズル６から清浄水を洗浄水として噴出させるようになっている。
　図３は、差圧と洗浄水噴出ノズル６への洗浄水の供給の有無を示すグラフであり、差圧がΔＰ１から２段階大きい差圧ΔＰ３を超えたら洗浄水噴出ノズル６への洗浄水の供給が開始し、差圧ＬがΔＰ３以下に戻ったら供給が停止することを示している。 The control means 9 provided in this example is configured so that, in addition to the control function of the control means 9 of the first example, if the differential pressure exceeds ΔP1 set in the first example, the difference set in stages Corresponding to the pressure, the rotational speed of the filter 2 is increased stepwise in accordance with the increase in the differential pressure, and the rotational speed of the filter 2 is made to correspond to the differential pressure increased from ΔP1 by two steps, and the differential pressure must still decrease. For example, the supply of the washing water to the washing water jet nozzle 6 is started, and the supply is stopped if the pressure falls below the differential pressure increased by two steps from ΔP1, and even if the washing water is supplied to the washing water jet nozzle 6, the differential pressure is further increased. When the pressure rises, the number of rotations of the filter 2 is further increased. If the pressure difference still rises, it is determined that the pressure difference is the limit pressure difference, and a control function that functions to stop the ballast water treatment operation is provided. Then, when the ballast water treatment operation is stopped, clean water is ejected as washing water from the washing water ejection nozzle 6 as in the first example.
FIG. 3 is a graph showing the differential pressure and whether or not the cleaning water is supplied to the cleaning water jet nozzle 6. When the differential pressure exceeds the differential pressure ΔP3 that is two steps larger than ΔP1, the cleaning water is supplied to the cleaning water jet nozzle 6. It shows that the supply stops when the supply starts and the differential pressure L returns to ΔP3 or less.
　このように構成された本例のバラスト水処理装置では、濾過器の運転中、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常に検知し、差圧検出手段８により検出された差圧がΔＰ１から増加方向へ段階的に設定された差圧に対応して、フィルタ２の回転数を段階的に増加させ、ΔＰ１から２段階増加した差圧までフィルタ２の回転数を対応させ、それでも差圧が低下しなければ洗浄水噴出ノズル６への洗浄水の供給を開始し、ΔＰ１から２段階増加した差圧より低下すれば供給を停止する。そして、洗浄水噴出ノズル６へ洗浄水を供給しても更に差圧が上昇するようであれば、さらにフィルタ２の回転数を増加させ、それでも差圧が上昇したら、限界差圧と判定し、バラスト水処理運転を停止させる。
　そして、第１例と同様に、フィルタ２の回転を続けた状態で、ポンプ２２の下流側に位置して開閉弁２３を閉じ、被処理水導入路２１に接続されている排水路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、フィルタ２の回転を続けながら、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の清浄水を洗浄水として洗浄水噴出ノズル６から噴出させる。 In the ballast water treatment apparatus of this example configured as described above, the pressure sensors 37 and 38 always detect the primary and secondary pressures of the filter 2 during the operation of the filter, and are detected by the differential pressure detection means 8. The rotational speed of the filter 2 is increased stepwise in response to the differential pressure that is set stepwise from ΔP1 in the increasing direction, and the rotational speed of the filter 2 is increased from ΔP1 to the differential pressure increased by two steps. If the differential pressure still does not decrease, the supply of the cleaning water to the cleaning water jet nozzle 6 is started, and the supply is stopped if the differential pressure decreases from ΔP1 by two steps. If the differential pressure further increases even if the cleaning water is supplied to the cleaning water jet nozzle 6, the rotational speed of the filter 2 is further increased, and if the differential pressure still increases, it is determined as the limit differential pressure, Stop ballast water treatment operation.
Then, as in the first example, with the filter 2 kept rotating, the on-off valve 23 is closed on the downstream side of the pump 22 and the drainage channel 24 connected to the treated water introduction channel 21 is opened and closed. Open the valve 25, open the air vent valve 12 provided in the lid 10, discharge the water in the casing 1, continue the rotation of the filter 2, water stored in the ballast tank, for other uses Clean water stored for the purpose of use, such as domestic water and drinking water, is jetted from the wash water jet nozzle 6 as wash water.
　このように、本例のバラスト水処理装置によれば、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ことに加え、差圧が所定差圧を超えた場合、吸引ノズル４に向かって洗浄水噴出ノズル６から洗浄水が噴出するので、回転しているフィルタ２の内周面に堆積している異物を短時間で容易に剥離させることができ、剥離した異物は吸引ノズル４で吸収することができるので、フィルタ２の効率の良い洗浄が行える。さらに、フィルタ２の差圧が所定差圧以下に戻った場合、洗浄水噴出ノズル６からの洗浄水の噴出が停止するので、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。
　また、本例は、第１例と同様に、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限界差圧ΔＰｎ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、洗浄水噴出ノズル６から洗浄水を噴出するので、フィルタ２の洗浄効果を一層高めることができる。 As described above, according to the ballast water treatment apparatus of this example, 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. In addition, when the differential pressure exceeds a predetermined differential pressure, the cleaning water is ejected from the cleaning water ejection nozzle 6 toward the suction nozzle 4, so that foreign matter accumulated on the inner peripheral surface of the rotating filter 2. Can be easily peeled off in a short time, and the peeled foreign matter can be absorbed by the suction nozzle 4, so that the filter 2 can be efficiently cleaned. Furthermore, when the differential pressure of the filter 2 returns to a predetermined differential pressure or less, the ejection of the washing water from the washing water ejection nozzle 6 is stopped, so that waste of the discharge amount of the treated water used as the washing water is effectively suppressed. be able to.
Further, similarly to the first example, this example stops the ballast water treatment operation when the differential pressure detected by the differential pressure detecting means 8 reaches the limit differential pressure ΔPn during the ballast water treatment operation, and the casing 1 The inside water is discharged and the washing water is ejected from the washing water jet nozzle 6, so that the washing effect of the filter 2 can be further enhanced.
　つぎに、本発明に係るバラスト水処理装置の実施の形態の第３例を説明する。
　本例のバラスト水処理装置は、基本構成が第１例と同じであり、異なる点は制御手段だけなので、基本構成にあっては第１例の概略断面図を示す図１を援用し、異なる制御手段について説明する。 Next, a third example of the embodiment of the ballast water treatment apparatus according to the present invention will be described.
The ballast water treatment apparatus of this example has the same basic configuration as that of the first example, and the only difference is the control means. Therefore, the basic configuration is different with reference to FIG. The control means will be described.
　本例に備えられた制御手段９は、第１例の制御手段９が有する制御機能に併せて、差圧が第１例で設定されているΔＰ１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、差圧がΔＰ１以下に戻れば供給を停止するように機能する制御機能と、差圧がΔＰ１以上で段階的に設定されており、その差圧レベルに応じて洗浄水噴出時の洗浄水噴出ノズル６への洗浄水の供給圧力（噴出量）を変更し、差圧がΔＰ１を超えた範囲で、差圧が大きい場合は洗浄水噴出ノズル６への洗浄水の供給圧力を大きく、差圧が小さい場合は洗浄水噴出ノズル６への洗浄水の供給圧力を小さくするように機能する制御機能とを備えている。
　さらに、本例では、第１例と同様に限界差圧が設定（ΔＰｎ）されており、差圧が限界差圧ΔＰｎに達したらバラスト水処理運転を停止させるように機能する制御機能を備えている。そして、バラスト水処理運転を停止させたら、第１例と同様に、洗浄水噴出ノズル６から清浄水を洗浄水として噴出させるようになっている。
　この制御機能の一例として、本例では、差圧を加する方向に向かってΔＰ１、ΔＰ２、ΔＰ３、ΔＰ４、ΔＰｎ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、洗浄水噴出ノズル６への洗浄水の供給圧力を増加させる方向に向かってＰ１、Ｐ２、Ｐ３と段階的に設定し、差圧がΔＰ１以下の場合はフィルタ２の回転数をＮ１に、差圧がΔＰ１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、洗浄水の供給圧力をＰ１に、差圧がΔＰ２を超えたら回転数をＮ２にするとともに洗浄水噴出ノズル６への洗浄水の供給圧力をＰ２に、差圧がΔＰ３を超えたら回転数がＮ３に、差圧がΔＰ４を超えたらフィルタ２の回転数をＮ４にするとともに洗浄水噴出ノズル６への洗浄水の供給圧力をＰ３にし、差圧がΔＰｎに達したらバラスト水処理運転を停止させるように制御する。 The control means 9 provided in this example is combined with the control function of the control means 9 of the first example, and when the differential pressure exceeds ΔP1 set in the first example, the washing water to the washing water jet nozzle 6 The control function that functions to stop the supply when the differential pressure returns to ΔP1 or less, and the differential pressure is set stepwise when the differential pressure is equal to or greater than ΔP1, and the wash water jets according to the differential pressure level When the supply pressure (spout amount) of the cleaning water to the cleaning water jet nozzle 6 is changed and the differential pressure exceeds ΔP1, the cleaning water supply pressure to the cleaning water jet nozzle 6 is large. And a control function that functions to reduce the supply pressure of the cleaning water to the cleaning water jet nozzle 6 when the differential pressure is small.
Further, in this example, the limit differential pressure is set (ΔPn) as in the first example, and when the differential pressure reaches the limit differential pressure ΔPn, a control function is provided that functions to stop the ballast water treatment operation. Yes. Then, when the ballast water treatment operation is stopped, clean water is ejected as washing water from the washing water ejection nozzle 6 as in the first example.
As an example of this control function, in this example, ΔP1, ΔP2, ΔP3, ΔP4, and ΔPn are set stepwise in the direction in which the differential pressure is applied, and the filter 2 rotates in accordance with the set differential pressure. N1, N2, N3, and N4 are set in stages in the direction of increasing the number, and in steps of P1, P2, and P3 in the direction of increasing the supply pressure of the cleaning water to the cleaning water jet nozzle 6 When the differential pressure is equal to or less than ΔP1, the rotation speed of the filter 2 is set to N1, and when the differential pressure exceeds ΔP1, the supply of the cleaning water to the cleaning water jet nozzle 6 is started, and the supply pressure of the cleaning water is set to P1. When the differential pressure exceeds ΔP2, the rotational speed is set to N2, and the supply pressure of the cleaning water to the cleaning water jet nozzle 6 is set to P2. When the differential pressure exceeds ΔP3, the rotational speed is set to N3, and the differential pressure exceeds ΔP4. When the filter 2 is rotated to N4, the washing water The supply pressure of the washing water to exit the nozzle 6 to P3, the differential pressure is controlled to stop the ballast water treatment operation reaches the .DELTA.Pn.
　このように構成された本例のバラスト水処理装置では、濾過器の運転中、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常に検知し、差圧検出手段８により検出された差圧がΔＰ１を超えたとき、第２例と同様、洗浄水噴出ノズル６への洗浄水の供給を開始し、差圧がΔＰ１以下に戻れば供給を停止するように調整を行うので、フィルタ２の内周面に体積している異物の量が多い場合は吸引ノズル４に向かって洗浄水噴出ノズル６から洗浄水が噴出し、少ない場合は洗浄水の噴出が停止する。
　そして、差圧が増加する方向に向かってΔＰ１以上で段階的に設定され、その差圧レベルに応じて、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と段階的に設定され、洗浄水噴出ノズル６への洗浄水の供給圧力を増加させる方向に向かってＰ１、Ｐ２、Ｐ３と段階的に設定されていおり、差圧レベルに応じて洗浄水噴出ノズル６への洗浄水の供給圧力が変更し、差圧がΔＰ１を超えた範囲で、差圧が大きい場合は洗浄水噴出ノズル６への洗浄水の供給圧力を大きく、差圧が小さい場合は洗浄水噴出ノズル６への洗浄水の供給圧力を小さくするように洗浄水噴出ノズル６への洗浄水の供給圧力の調整を行い、そして、洗浄水噴出ノズル６への洗浄水の供給圧力を大きくしても差圧が上昇し、差圧がΔＰｎに達したらバラスト水処理運転を停止させる。
　そして、第１例と同様に、フィルタ２の回転を続けた状態で、ポンプ２２の下流側に位置して開閉弁２３を閉じ、被処理水導入路２１に接続されている排水路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、フィルタ２の回転を続けながら、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の清浄水を洗浄水として洗浄水噴出ノズル６から噴出させる。 In the ballast water treatment apparatus of this example configured as described above, the pressure sensors 37 and 38 always detect the primary and secondary pressures of the filter 2 during the operation of the filter, and are detected by the differential pressure detection means 8. When the differential pressure exceeds ΔP1, the supply of cleaning water to the cleaning water jet nozzle 6 is started as in the second example, and the adjustment is performed to stop the supply when the differential pressure returns to ΔP1 or less. When the amount of foreign matter volume on the inner peripheral surface of the filter 2 is large, the cleaning water is ejected from the cleaning water ejection nozzle 6 toward the suction nozzle 4, and when the amount is small, the ejection of the cleaning water is stopped.
Then, it is set stepwise by ΔP1 or more in the direction in which the differential pressure increases, and in steps of N1, N2, N3, and N4 in the direction in which the rotation speed of the filter 2 is increased in accordance with the differential pressure level. Are set stepwise as P1, P2, and P3 in the direction of increasing the supply pressure of the cleaning water to the cleaning water jet nozzle 6, and are supplied to the cleaning water jet nozzle 6 according to the differential pressure level. When the supply pressure of the cleaning water is changed and the differential pressure exceeds ΔP1, if the differential pressure is large, the supply pressure of the cleaning water to the cleaning water jet nozzle 6 is large, and if the differential pressure is small, the cleaning water jet nozzle The supply pressure of the cleaning water to the cleaning water jet nozzle 6 is adjusted so as to reduce the supply pressure of the cleaning water to the cleaning water jet 6 and the supply pressure of the cleaning water to the cleaning water jet nozzle 6 is increased. When the pressure rises and the differential pressure reaches ΔPn, Stopping the strike water treatment operation.
Then, as in the first example, with the filter 2 kept rotating, the on-off valve 23 is closed on the downstream side of the pump 22 and the drainage channel 24 connected to the treated water introduction channel 21 is opened and closed. Open the valve 25, open the air vent valve 12 provided in the lid 10, discharge the water in the casing 1, continue the rotation of the filter 2, water stored in the ballast tank, for other uses Clean water stored for the purpose of use, such as domestic water and drinking water, is jetted from the wash water jet nozzle 6 as wash water.
　このように、本例のバラスト水処理装置によれば、第２例と同様に、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ことに加え、差圧が所定差圧を超えた場合、吸引ノズル４に向かって洗浄水噴出ノズル６から洗浄水が噴出し、併せて差圧が所定差圧を超えた場合の差圧レベルに応じて洗浄水噴出ノズル６から噴出する洗浄水の噴出圧力を調整することにより、回転しているフィルタ２の内周面に堆積している異物を一層効果的に剥離させることができ、剥離した異物は吸引ノズル４で吸引することができるので、フィルタ２の効率の良い洗浄が短い時間で行える。さらに、差圧が所定差圧以下に戻った場合、洗浄水噴出ノズル６からの洗浄水の噴出を停止させるので、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。
　また、本例は、第１例と同様に、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限界差圧ΔＰｎ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、洗浄水噴出ノズル６から洗浄水を噴出するので、フィルタ２の洗浄効果を一層高めることができる。 Thus, according to the ballast water treatment apparatus of this example, as in the second example, the degree of contamination of the filter 2 is determined by the differential pressure between the primary side and the secondary side of the filter 2, and the filter is based on the differential pressure. In addition to controlling the number of revolutions of 2, when the differential pressure exceeds a predetermined differential pressure, the cleaning water is ejected from the cleaning water ejection nozzle 6 toward the suction nozzle 4, and the differential pressure exceeds the predetermined differential pressure. The foreign matter accumulated on the inner peripheral surface of the rotating filter 2 is more effectively peeled off by adjusting the jet pressure of the wash water ejected from the wash water jet nozzle 6 according to the differential pressure level when Since the separated foreign matter can be sucked by the suction nozzle 4, efficient cleaning of the filter 2 can be performed in a short time. Furthermore, when the differential pressure returns to a predetermined differential pressure or less, since the ejection of the washing water from the washing water ejection nozzle 6 is stopped, waste of the discharged amount of the treated water used as the washing water can be effectively suppressed. .
Further, similarly to the first example, this example stops the ballast water treatment operation when the differential pressure detected by the differential pressure detecting means 8 reaches the limit differential pressure ΔPn during the ballast water treatment operation, and the casing 1 The inside water is discharged and the washing water is ejected from the washing water jet nozzle 6, so that the washing effect of the filter 2 can be further enhanced.
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
７　洗浄水供給手段
８　差圧検出手段
９　制御手段
１０　蓋部
１１　底部
１２　エア抜き弁
１３　上閉止部
１４　下閉止部
１５　上部回転軸部材
１６　下部回転軸部材
１７　モータ
１８、１９　軸受部材
２０　被処理水導入口
２１　被処理水導入路
２２　ポンプ
２３　開閉弁
２４　排水路
２５　開閉弁
２６　処理水流出口
２７　処理水流出空間
２８　洗浄汚水集合管
２９　洗浄汚水排出管
３０　開閉弁
３１　軸受部材
３２　処理水路
３３　洗浄水供給路
３４　ポンプ
３５　開閉弁
３６　圧力計
３７、３８　圧力センサ
３９　タンク
４０　高圧流体噴出ノズル
４１　高圧流体供給手段
４２　清浄水供給路
４３　ポンプ DESCRIPTION OF SYMBOLS 1 Casing 2 Filter 3 Filter rotation means 4 Suction nozzle 5 Washing sewage discharge means 6 Washing water ejection nozzle 7 Washing water supply means 8 Differential pressure detection means 9 Control means 10 Lid 11 Bottom 12 Air vent valve 13 Upper closing part 14 Lower closing Portion 15 Upper rotating shaft member 16 Lower rotating shaft member 17 Motors 18, 19 Bearing member 20 Untreated water inlet 21 Untreated water introduction path 22 Pump 23 On-off valve 24 Drainage path 25 On-off valve 26 Untreated water outlet 27 Untreated water outlet space 28 Washing sewage collecting pipe 29 Washing sewage discharge pipe 30 On-off valve 31 Bearing member 32 Treatment water passage 33 Washing water supply passage 34 Pump 35 On-off valve 36 Pressure gauge 37, 38 Pressure sensor 39 Tank 40 High-pressure fluid ejection nozzle 41 High-pressure fluid supply means 42 Clean water supply path 43 Pump

Claims (9)

  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、前記フィルタ内周面に向かって開口し、前記フィルタの軸方向全域から常時吸引する吸引ノズルと、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、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 around its axial center, a suction nozzle provided on the primary side of the filter, opening toward the inner peripheral surface of the filter, and constantly sucking from the entire axial direction of the filter; The cleaning sewage discharging means for discharging the cleaning sewage sucked by the suction nozzle to the outside from the casing, the differential pressure detection means for detecting the differential pressure between the primary side and the secondary side of the filter, and the differential pressure detection means. A ballast water treatment apparatus comprising control means for controlling the rotational speed of the filter based on the differential pressure.
  2. 　前記吸引ノズルは、前記フィルタの軸方向全域から吸引可能に前記フィルタの軸方向に直線状あるい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１に記載のバラスト水処理装置。 2. The ballast water treatment according to claim 1, wherein a plurality of the suction nozzles are arranged in a linear shape or a circumferential direction in the axial direction of the filter so that suction can be performed from the entire axial direction of the filter. apparatus.
  3. 　前記フィルタの二次側に、前記フィルタを挟んで前記吸引ノズルと対向する位置で前記吸引ノズルに向かって洗浄水を噴出する洗浄水噴出ノズルを設け、前記差圧検出手段により検出された差圧に基づき前記洗浄水噴出の有無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に記載のバラスト水処理装置。 A differential pressure detected by the differential pressure detection means is provided on the secondary side of the filter, provided with a flush water ejection nozzle that ejects flush water toward the suction nozzle at a position facing the suction nozzle across the filter. The ballast water treatment apparatus according to claim 1, further comprising: a control unit that controls whether or not the washing water is ejected based on the above.
  4. 　前記フィルタの二次側に、前記フィルタを挟んで前記吸引ノズルと対向する位置で前記吸引ノズルに向かって洗浄水を噴出する洗浄水噴出ノズルを設け、前記差圧検出手段により検出された差圧に基づき前記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請求項１に記載のバラスト水処理装置。 A differential pressure detected by the differential pressure detection means is provided on the secondary side of the filter, provided with a flush water ejection nozzle that ejects flush water toward the suction nozzle at a position facing the suction nozzle across the filter. The ballast water treatment apparatus according to claim 1, further comprising a control unit that controls the presence or absence of the washing water jet and the washing water jet pressure when the washing water is jetted.
  5. 　前記フィルタの二次側に、前記フィルタを挟んで前記吸引ノズルと対向する位置で前記吸引ノズルに向かって洗浄水を噴出する洗浄水噴出ノズルを設け、前記差圧検出手段により検出された差圧に基づき前記洗浄水噴出の有無を制御する制御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 differential pressure detected by the differential pressure detection means is provided on the secondary side of the filter, provided with a flush water ejection nozzle that ejects flush water toward the suction nozzle at a position facing the suction nozzle across the filter. The ballast water treatment apparatus according to claim 2, further comprising a control unit configured to control the presence or absence of the washing water jet based on the above.
  6. 　前記フィルタの二次側に、前記フィルタを挟んで前記吸引ノズルと対向する位置で前記吸引ノズルに向かって洗浄水を噴出する洗浄水噴出ノズルを設け、前記差圧検出手段により検出された差圧に基づき前記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請求項２に記載のバラスト水処理装置。 A differential pressure detected by the differential pressure detection means is provided on the secondary side of the filter, provided with a flush water ejection nozzle that ejects flush water toward the suction nozzle at a position facing the suction nozzle across the filter. The ballast water treatment apparatus according to claim 2, further comprising a control unit that controls whether or not the washing water is ejected and a washing water ejection pressure when the washing water is ejected.
  7. 　前記差圧検出手段により検出された差圧があらかじめ設定した限界差圧に達したとき、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３，４，５または６のいずれか１に記載のバラスト水処理装置。 When the differential pressure detected by the differential pressure detection means reaches a preset limit differential pressure, the ballast water treatment operation is stopped, water in the casing is discharged, and cleaning water is ejected from the cleaning water ejection nozzle. The ballast water treatment apparatus according to any one of claims 3, 4, 5 and 6, wherein the ballast water treatment apparatus is configured as described above.
  8. 　前記フィルタの二次側に設けられ、前記吸引ノズルと対峙しない位置で前記フィルタ外周面に向かって開口し、前記フィルタの軸方向全域に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１乃至７のいずれか１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 and that opens toward the outer peripheral surface of the filter at a position that does not face the suction nozzle and that ejects high-pressure fluid in the entire axial direction of the filter; and the high-pressure fluid The ballast water treatment device according to any one of claims 1 to 7, further comprising high-pressure fluid supply means for supplying high-pressure fluid to the ejection nozzle.
  9. 　前記高圧流体噴出ノズルは、前記フィルタの軸方向全域に噴出可能に前記フィルタの軸方向に直線状あるい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８に記載のバラスト水処理装置。 9. The ballast according to claim 8, wherein a plurality of the high-pressure fluid ejection nozzles are arranged linearly in the axial direction of the filter or at different angles in the circumferential direction so as to be ejected over the entire axial direction of the filter. Water treatment equipment.
PCT/JP2013/052156 2013-01-31 2013-01-31 Ballast water treatment device WO2014118926A1 (en)

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JP2016083983A (en) * 2014-10-24 2016-05-19 三浦工業株式会社 Ballast water treatment device
JP2016153105A (en) * 2015-02-20 2016-08-25 三浦工業株式会社 Ballast water treatment device
CN111971101A (en) * 2018-04-15 2020-11-20 阿米亚德过滤系统公司 Control mechanism of self-cleaning filtering system

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JP2011251284A (en) * 2010-02-25 2011-12-15 Sumitomo Electric Ind Ltd Apparatus and method for treating ballast water for ship

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JP2016083983A (en) * 2014-10-24 2016-05-19 三浦工業株式会社 Ballast water treatment device
JP2016153105A (en) * 2015-02-20 2016-08-25 三浦工業株式会社 Ballast water treatment device
CN111971101A (en) * 2018-04-15 2020-11-20 阿米亚德过滤系统公司 Control mechanism of self-cleaning filtering system

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