JP2005218887A - Ship loading type contaminated water cleaning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a contaminated water cleaning means which can be loaded on ships and is capable of satisfactorily separating a substance to be separated in raw water such as ballast water even on the pitching and rolling ships. <P>SOLUTION: This ship loading type contaminated water cleaning device comprises a raw water treatment means that prepares magnetic flocs from an object to be removed contained in the raw water such as ballast water, a filtering means that filters the magnetic flocs from pretreatment water containing the magnetic flocs by using a filter material, a floc removing means that removes the magnetic flocs from the filter material, a magnetic separation means that sucks and collects the removed magnetic flocs by a magnetic force and a pitch and roll controlling means that maintains horizontally the free water level of the pretreatment water on which a magnetic force of the magnetic separation means is exerted. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a polluted water purification apparatus, and more particularly to a ship-mounted polluted water purification apparatus that can separate a substance to be separated satisfactorily even in a ship that is shaken.

  A ship such as a crude oil tanker, a natural gas carrier ship, or an ore carrier ship keeps the balance of the ship after unloading by storing ballast water in a ballast tank. As this ballast water, seawater or fresh water in the unloaded water area is generally used. The ballast water stored in the ballast tank is drained in the calling water area where the ship is loaded when the ship moves to the next port to load the ship again.

  By the way, in recent years, pollutants such as bacteria and plankton contained in the ballast water stored in ships have been released to the port of call, so that bacteria and plankton that have not existed in the water area have grown abnormally and caused red tides. There is an international problem in that shellfish-toxic plankton grows, destroys the ecosystem in the waters, and causes fishery damage to fish and shellfish culture.

  In order to avoid this problem, it is necessary to remove and drain the pollutants in the ballast water of the ship, and it is considered to provide a purification device dedicated to ballast water in the ship.

For example, Patent Document 1 discloses a solid-liquid separation device that can be applied as a purification device that removes contaminants. The solid-liquid separation device disclosed in Patent Document 1 uses a mesh knitted with a thin wire mesh or polymer fiber as a water separation membrane, and in a raw water having contaminated particles as a substance to be separated, a flocculant and a magnetic powder To generate a magnetic floc, the magnetic floc is separated by a water separation membrane, and the magnetic floc separated by the water separation membrane is sucked and collected by the magnetism generated by the magnetic field generating means, and the high concentration sludge is collected. Is to be recovered.
JP 2002-273261 (paragraph 0010, FIG. 1)

However, the solid-liquid separation device described in Patent Document 1 has been developed on the premise that it is installed on land, and no example of mounting such a purification device on a ship has been found.
Therefore, the problem to be solved by the present invention is to purify polluted water that can be discharged as purified water from which pollutants have been removed, even in the case where raw water containing pollutants is used as ballast water. Is to provide a means.

  In addition, when a magnetic floc is generated from pollutants of ballast water, a magnetic floc is filtered using a filter, and a purification device that sucks and collects the filtered magnetic floc using a magnetic field generating means is mounted on a ship. The free water surface where the magnetic floc filtered by the filter stays tilts in accordance with the sway of the ship. At this time, if the free water surface where the magnetic flocs are retained falls from the range in which the magnetic force of the magnetic field generating means acts, the separation function for attracting and collecting the magnetic flocs of the magnetic field generating means is reduced, so that the magnetic flocs are retained. As a result, a problem arises in that the amount to be purified increases, the filter is clogged, and the purification performance deteriorates.

  Therefore, another problem to be solved by the present invention is to provide a polluted water purifying means that can be mounted on a ship and can satisfactorily separate substances to be separated from raw water such as ballast water even in a ship that is upset. That is.

  The ship-mounted polluted water purification apparatus according to the present invention, which has been made to solve the above-described problems, generates magnetic flocs from a material to be removed contained in raw water such as ballast water by raw water treatment means, and by filtration separation means. The magnetic floc is filtered and separated from the pretreated water containing the magnetic floc by using the filter medium, the magnetic floc is removed from the filter medium by the floc removing means, and the removed magnetic floc is attracted by the magnetic force by the magnetic separation means. Collect.

  Furthermore, the ship-mounted polluted water purification apparatus according to the present invention includes a shaking control means for maintaining the free water surface of the pretreated water on which the magnetic force of the magnetic separation means acts horizontally.

  According to the present invention, the removal object such as bacteria and plankton contained in the raw water such as ballast water transferred along with the navigation of the ship can be removed well, which contributes to the prevention of the destruction of the ecosystem due to the drainage of the ballast water. be able to.

[Outline of contaminated water purification equipment]
Embodiments according to the present invention will be described. The polluted water purification apparatus according to the present embodiment is mounted on, for example, a ship that stores ballast water, and the ship-mounted polluted water that separates and removes harmful pollutants such as plankton and bacteria contained in the ballast water during navigation. It is a purification device. First, the polluted water purification process of the ship-mounted polluted water purification apparatus according to the present embodiment will be described.

  The ship-mounted polluted water purification apparatus according to the present embodiment adds a magnetic powder such as triiron tetroxide to raw water, which is ballast water to be removed from pollutants, and coagulants such as polyaluminum chloride and iron chloride. Or ferric sulfate is added and aluminum ions and iron ions are generated and stirred. Solid flocculent materials in the raw water, contaminants such as algae, fungi, and microorganisms and magnetic powder are mixed with a flocculant to a few hundred micrometers. Magnetic micro flocs coupled to size are generated. Furthermore, bacteria such as coliform bacteria having a size of about 1 micrometer are aggregated and collected in the magnetic micro flocs thus generated.

  Alternatively, magnetic micro-floc is produced by adding a substance having magnetism to raw water by a chemical reaction to generate magnetic particles, and adsorbing contaminants in the raw water to the magnetic particles and binding them to a size of about several hundred micrometers. In addition, aluminum and iron electrodes are placed in the raw water, and aluminum ions and iron ions are generated and stirred by the electrochemical reaction, and the contaminants and magnetic powder in the raw water are agglomerated. It is also possible to generate magnetic micro flocs bonded to a size of about several hundred micrometers by the agent.

  A magnetic micro floc of about several hundred micrometers generated in this way is added with a polymer reinforcing agent made of a high molecular polymer, and further stirred, so that the magnetic micro floc is bonded to a size of about several millimeters. Generate a flock.

  The magnetic flocs generated in this way cannot pass through the openings of the mesh having openings of several tens of micrometers or less, and are captured and separated at a high removal rate and dehydrated to become sludge and separated from the raw water. The raw water that has passed through the mesh in which such openings are formed becomes purified water with excellent water quality.

  In the ship-mounted polluted water purification apparatus of the embodiment described later, a mesh in which an opening having an opening of several tens of micrometers or less is formed is disposed on the outer peripheral surface of a rotating drum that is a filtration unit.

  And the mesh outer surface to which the magnetic floc in the site | part below the liquid level of the pretreatment water which produced | generated the magnetic floc from the raw water which is ballast water adheres is moved to the air | atmosphere part of the liquid level upper part of pretreatment water. The magnetic flocs on the outer surface of the mesh that has moved to the atmosphere after adhering to the mesh are backwashed with cleaning water sprayed from the spray placed inside the rotating drum, washed away from the outer surface of the mesh, and peeled off, generating a magnetic field. Transferred to the means.

  At this time, the outer surface of the mesh is reliably regenerated by the washing water, and returned to the portion below the liquid level of the pretreatment water. As cleaning water, purified water that has passed through the mesh is pressurized with a pump or the like.

  Further, a magnetic field generating means is disposed in the vicinity of the free water surface of the pretreated water, and a rotating body serving as a capturing and moving body is disposed so as to surround the magnetic field generating means. The magnetic floc washed away from the outer surface of the mesh with the washing water sprayed from the spray and moved to the rotating body side by the action of the magnetic force of the magnetic field generating means adheres to the rotating body.

The rotating body rotates and moves away from the magnetic field generating means alone, and the magnetic floc is scraped off from the surface of the rotating body by a scraping means consisting of, for example, a scraper and rotated as sludge at a portion where the magnetic force is reduced. It is removed from the body surface.
At this time, the surface of the rotator is regenerated by peeling off the magnetic flocs by the scraper, and the rotator rotates and moves again in the direction approaching the magnetic field generating means, thereby attaching the magnetic flocs on the surface.

  Here, since the ship-mounted polluted water purification apparatus of the present embodiment is installed in a ship that is being navigated, the magnetic force of a narrow magnetic field generating means acts between the filter that filters the magnetic floc and the rotating body. In the region, if the free water surface where the magnetic floc stays is tilted with the ship's motion, the free water surface will be out of the magnetic field range of the magnetic field generating means, so the magnetic flock will not work, so the magnetic floc can be removed. Therefore, in order to avoid the amount of magnetic floc stagnating continuously increasing and clogging the filter and degrading the purification performance, the relative relationship between the magnetic field generating means and the region where the magnetic force of the magnetic field generating means acts is avoided. It has an oscillation control means for maintaining the position. A detailed description of this oscillation control means will be described in detail in an embodiment described later.

[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is an example of a processing system diagram illustrating the processing of the ship-mounted polluted water purification apparatus according to the present embodiment. FIG. 2 is a filtration separation unit 19 of the ship-mounted polluted water purifying apparatus shown in FIG. FIG. 3 is a cross-sectional view taken along line AA of the filtration separation unit 19 shown in FIG. FIG. 4 shows an example of a layout diagram in which the filtration / separation unit 19 of the ship-mounted polluted water purification apparatus shown in FIG.

  First, with reference to FIG. 1, the processing system of the ship-mounted polluted water purification apparatus of the present embodiment will be described.

[Pretreatment water generation]
The raw water storage tank 1 is, for example, a ballast tank in which ballast water is stored. The raw water storage tank 1 is preliminarily removed of relatively large dust having a diameter of several millimeters or more by a filter (not shown), and has a fine covering. A raw water 2 that is a ballast water containing separation substances, for example, oil particles, organic matter, and / or microorganisms, is stored.
In addition, the raw | natural water storage tank 1 can also be provided separately from a ballast tank.

  A pump 3 controlled by an operation control device 50 to be described later supplies raw water 2 stored in the raw water storage tank 1 through the pipe 4 to the first stirring tank 7 by a predetermined amount. In this pipe 4, magnetic powder such as triiron tetroxide, pH adjuster, aluminum ions such as aqueous solutions such as polyaluminum chloride, iron chloride or ferric sulfate, and iron ions are supplied from the seeding agent adjusting device 5. A seeding agent composed of the provided flocculant is added to the raw water 2 through the conduit 6.

In the first agitation tank 7, the raw water 2 and the seeding agent are agitated at a high speed by the agitating blade 9 that is rotationally driven by the motor 8 controlled by the operation control device 50, and has a size of about several hundred micrometers. An aqueous solution containing magnetic micro flocs is produced.
Thereafter, the aqueous solution containing the magnetic micro floc is sent to the second stirring tank 13 through the pipe 10. In the pipe 10, a polymer reinforcing agent or the like is added from the polymer agent adjusting device 11 to the aqueous solution containing magnetic micro flocs through the conduit 12.

  In the second agitation tank 13, the aqueous solution containing the magnetic micro floc and the polymer reinforcing agent are slowly agitated at a low speed by the agitation blade 15 that is rotationally driven by the motor 14 controlled by the operation control device 50. Pretreated water 17 that is an aqueous solution containing magnetic floc 16 having a size of the order of millimeters is generated. Bacteria such as coliform bacteria having a size of about several micrometers are also collected in this magnetic floc.

  The pretreated water 17 generated in this way is sent to the filtration / separation unit 19 via the pipe 18. In addition, the 1st stirring tank 7, the seeding agent adjustment apparatus 5, and the installation accompanying it are the magnetizing means of a claim, and the 2nd stirring tank 13, the polymeric agent adjustment apparatus 11, and the installation accompanying it are This corresponds to the floc growth means in the claims.

[Filter separation part]
Next, based on FIG. 2 and FIG. 3, the filtration separation part 19 is demonstrated in detail (refer FIG. 1 suitably).

  A filtration filter in which an opening having an opening of several micrometers to several tens of micrometers is formed on the outer peripheral surface of the rotary drum 20 of the filtration separation unit 19 by a stainless steel fine wire, a copper fine wire, or a polyester fiber. A mesh 21 is provided.

The pretreated water 17 flowing into the water tank 22 from the pipe 18 passes through the mesh 21 and flows into the rotating drum 20. At this time, the magnetic floc 16 contained in the pretreated water 17 is captured by the outer surface of the mesh 21, and the water that has passed through the mesh 21 and separated from the magnetic floc 16 is purified water, and the opening of the rotary drum 20 shown in FIG. From the section 23, it is stored in a purified water tank 25, which is a ballast tank partitioned separately from the raw water storage tank 1 through the pipe 24, and is appropriately discharged out of the system. The power for the pretreated water 17 to pass through the mesh 21 is given by the liquid level difference between the pretreated water 17 in the water tank 22 and the purified water in the rotary drum 20. Further, the rotary drum 20 corresponds to the filtration separation means in the claims.
In addition, the purified water stored in the purified water tank 25, which is a ballast tank partitioned separately from the raw water storage tank 1, is used as ballast water and finally discharged in the water area where the ship enters the port for loading cargo. The The purified water tank 25 can be provided separately from the ballast tank.

  On the other hand, the magnetic floc 16 is separated and attached to the outer surface of the mesh 21 of the rotating drum 20 that rotates counterclockwise as shown by the arrow in FIG. It is withdrawn from and exposed to the atmosphere.

  Here, as shown in FIG. 1, the purified water stored in the purified water tank 25 is pressurized by the pump 26 and sent to the spray 28 from the conduit 27, so that the purified water is fed from the hole of the spray 28 as shown in FIG. Spray from the inside of the mesh 21 to the outside in the form of a spray. The magnetic flock 16 attached to the outer surface of the mesh 21 is peeled off by the spray-like purified water, and the outer surface of the mesh 21 is regenerated. Then, the magnetic floc 16 peeled off by the spray-like purified water is retained near the free water surface 63 of the pretreated water 17 in the water tank 22. In addition, the spray 28 and the equipment accompanying it correspond to the floc removing means in the claims.

  Next, the configuration of the magnetic field generating means for sucking and collecting the magnetic floc 16 retained near the free water surface 63 of the pretreated water 17 in the water tank 22 will be described.

  The fixed magnet portion 29 used as a magnetic field generating means used for attracting the magnetic floc 16 by magnetic force is provided with a plurality of grooves on the outer surface of the support 30 made of a non-magnetic material. The permanent magnet 31 is fixed to the groove with an adhesive or the like.

  As shown in FIG. 3, the magnet portion 29 is inserted into the rotating body 33 from the end of the rotating body 33 that is open to the atmosphere. The support jig 64 and the support jig 65 fixedly supported on the wall of the water tank 22 by welding or the like are coupled by bolts 66, and the support 30 is coupled to the support jig 65 by bolts 67. The water tank 22 is fixedly supported. At this time, as shown in FIG. 2, the free water surface 63 is set and arranged along the central portion of the permanent magnet 31. The permanent magnet 31 can be replaced with an electromagnet or the like.

  Referring again to FIG. 3, the rotating body 33 made of a non-magnetic material that transfers the magnetic flock 16 attracted by the magnetic force of the permanent magnet 31 is rotationally driven by the motor 35 via the shaft 34. The One end of the rotator 33 is supported by the wall of the water tank 22 by a rotation support 36 having watertightness, and the other end is rotated through a rotation support 37 having watertightness. The outer periphery of the body 33 is supported by the wall of the water tank 22, and the inside of the rotating body 33 is open to the atmosphere. The rotator 33 is driven to rotate in the direction of lifting the magnetic floc 16 attracted by the magnetic force, as indicated by the arrow in FIG.

  A procedure for sucking and collecting the magnetic floc 16 retained on the free water surface 63 using the magnet unit 29 serving as the magnetic field generating means will be described.

  As shown in FIG. 2, the magnetic flock 16 that is washed away by the purified water sprayed from the spray 28 and stays in the vicinity of the free water surface 63 is moved to the permanent magnet 31 side by the magnetic force of the permanent magnet 31 of the magnet portion 29. And is attached to the outer surface of the rotating body 33 that rotates slowly at a low speed. The magnetic flocs 16 attached to the outer surface of the rotating body 33 are pulled up from the pretreatment water 17 as the rotating body 33 rotates, and are exposed to the atmosphere. In the atmosphere, excess moisture in the magnetic floc 16 flows down on the outer surface of the rotating body 33 due to gravity, and the magnetic floc 16 is dehydrated. Furthermore, the magnetic flock 16 is compressed by the magnetic force on the outer surface of the rotating body 33 by the magnetic force of the magnet portion 29, and dehydration is promoted. Eventually, the moisture content of the magnetic floc 16 adhering to the outer surface of the rotating body 33 is reduced to about 95%.

Next, the magnetic flock 16 attached to the outer surface of the rotating body 33 moves by the rotation of the rotating body 33 while being dehydrated by gravity. At this time, the outer surface of the rotator 33 gradually moves away from the magnet unit 29 as the rotator 33 rotates, whereby the attraction effect due to the magnetic force on the outer surface of the rotator 33 is rapidly reduced as the rotator 33 moves away from the magnet unit 29.
The magnetic floc 16 is peeled off from the outer surface of the rotating body 33 by the scraper 38 for scraping supported at one end by the water tank 22, falls to the sludge collection tank 39 by its own weight, and is separated and collected as sludge. It is discharged to the sludge collection tank 39. In addition, the rotary body 33, the magnet part 29, and the scraper 38 are equivalent to the magnetic separation means of a claim.

  The sludge discharged to the sludge collection tank 39 is introduced into a dehydrator 41 (see FIG. 1) including a centrifuge and a belt press (not shown) through a pipe 40 so that water does not leak from the sludge during transportation. The high-concentration sludge dehydrated to about 85%, which is dehydrated to about 85%, or can activate microorganisms that decompose organic matter during composting, is passed to the sludge tank 43 through the pipe 42. Accumulated. Thereafter, the sludge is transported to a disposal site, an incineration site, or a composting site, for example, by a truck or the like at a port of call, and disposed of.

  The treated sewage generated when dewatering is performed by the dehydrator 41 is stored in the treated sewage tank 45 through the pipe 44, pressurized by the pump 46, and then returned from the pipe 47 to the raw water storage tank 1 through the pipe 48. Then, it is again introduced into the process of generating the pretreated water 17.

As shown in FIG. 2, the free water surface 63 of the pretreated water 17 in the water tank 22 is filtered by the mesh 21 due to insufficient rotation speed of the rotary drum 20 or the like. When the amount of the pretreated water 17 flowing in from (see FIG. 1) falls, the liquid level of the pretreated water 17 in the water tank 22 may rise.
In order to prevent the pretreated water 17 from flowing into the sludge collecting tank 39 from the pretreated water 17 side of the water tank 22, an overflow water collecting tank 61 for collecting the pretreated water 17 that has overflowed is provided. ing. The overflow water recovered in the overflow water recovery tank 61 passes through the pipe 62 and is stored in the treated sewage tank 45, pressurized by the pump 46, and returned to the raw water storage tank 1 through the pipe 48.

(Operation control device)
Next, the operation control device 50 that performs overall control of the operation of the ship-mounted polluted water purification device of the present embodiment will be described in detail.

In order to efficiently attract the magnetic floc 16 peeled off from the rotary drum 20 of the filtration separation unit 19 by the magnetic force of the magnet unit 29, the free water surface 63 of the pretreated water 17 in the water tank 22 is provided with a magnet unit. It is desirable that it is substantially at the center of the 29 magnetic fields, that is, at the position of the AA cross section in FIG.
When the free water surface 63 is lower than the position of the AA cross section, the magnetic floc 16 can be attached to the surface of the rotating body 33 only at a position lower than the free water surface 63, and the magnetic floc 16 is attracted by a magnetic force. Thus, the recovery efficiency decreases. For this reason, the purification process performance of the filtration separation part 19 will fall. In order to prevent such a state, the operation control device 50 controls the overall operation state of the ship-mounted polluted water purification device so as to maintain the water level of the free water surface 63 appropriately.

  As shown in FIG. 1, the operation control device 50 receives measurement values such as the liquid level height, turbidity, temperature, and ph value of the raw water 2 measured by the sensor 49, and each operation terminal is based on the measurement values. A control signal is transmitted to. The operation control device 50 operates in advance the amount of seeding agent (magnetic powder, ph adjuster, flocculant) that is optimal for generating a good magnetic micro floc based on the measurement value measured by the sensor 49 in advance. It calculates with the optimal amount calculation program stored in the control apparatus 50, based on the calculated value, a control signal is transmitted to the seeding agent adjustment apparatus 5, and the optimal amount of a seeding agent is added.

  At the same time, the number of rotations of the motor 8 in the first stirring tank 7 and the residence time of the raw water 2 in the first stirring tank 7 are calculated in the operation control device 50, and a control signal is sent to the motor 8 based on this calculated value. Then, the stirring blade 9 is rotated at the optimum rotational speed, and the discharge amount of the pump 3 that determines the retention time in the first stirring tank 7 is controlled.

  Furthermore, the addition amount of the polymer reinforcing agent (polymer polymer) optimal for generating a good magnetic floc 16 is calculated, and a control signal is transmitted to the polymer agent adjusting device 11 based on this calculated value. Add the optimal amount of molecular reinforcing agent. At the same time, the operation control device 50 calculates the rotation speed of the motor 14 in the second stirring tank 13, and transmits a control signal to the motor 14 based on the calculated value to rotate the stirring blade 15 at the optimum rotation speed.

On the other hand, in the filtration / separation unit 19, the liquid level of the pretreated water 17 in the water tank 22 is measured by the liquid level sensor 56, and the measured value is transmitted to the operation control device 50.
Based on this measurement value, the operation control device 50 determines that the liquid surface position of the pretreatment water 17 in the water tank 22 is approximately the center of the installation position of the magnet unit 29, that is, the average value of the magnetic field generated by the magnet unit 29. The optimum rotational speed of the rotary drum 20 and the appropriate speed for recovering the magnetic floc 16 are calculated by the above-mentioned optimum amount calculation program so that the maximum position is reached, and the control signal is calculated based on this calculated value. 20 is transmitted to a motor (not shown) for driving 20 and a motor 35 for driving the rotating body 33, and each is controlled to an optimum rotational speed.

[Swing control stand]
Next, the shaking control stand 73 on which the filtration separation unit 19 is installed will be described with reference to FIG.

  The water tank 22 of the filtration / separation unit 19 is fixed by a fixed column 77 to an upper support base 68 of a fluctuation control base 73 which is a fluctuation control means. The shaking control stand 73 is composed of an upper support stand 68 supported via at least three electric cylinders 71 from a lower support stand 70 fixed to the floor 69 of the ship. The electric cylinder 71 corresponds to the horizontal maintaining means in the claims.

A procedure for maintaining the free water surface 63 in the horizontal direction using the shaking control table 73 will be described. First, the inclination of the free water surface 63 to which the magnetic force acts is estimated by an inclinometer 72 corresponding to the inclination measuring means of the claims disposed above the filtration separation unit 19 and transmitted to the inclination control device 74. The inclination control device 74 calculates the amount of expansion / contraction of each electric cylinder 71 necessary for maintaining the filtration / separation unit 19 horizontally, and transmits the control signal to each electric cylinder 71. The inclinometer 72 can be provided at a place other than the upper part of the filtration separation unit 19. Each electric cylinder 71 changes the amount of expansion and contraction of the electric cylinder 71 according to the received control signal to support the upper part. The stand 68 is always kept horizontal. The tilt control device 74 corresponds to the tilt control means in the claims.

  By this structure, since the upper support stand 68 is always maintained horizontally, the aquarium 22 is also maintained horizontally, so that the free water surface 63 between the mesh 21 and the rotating body 33 can be moved even if the ship is shaken. The free water surface 63 is kept horizontal. Therefore, since the free water surface 63 is maintained within the range in which the magnetic force of the permanent magnet 31 acts, the magnetic floc 16 peeled off with the washing water from the mesh 21 staying in the vicinity of the free water surface 63 is magnetically attracted and pretreated. Removed from water 17. Therefore, since the magnetic floc 16 filtered by the mesh 21 is always magnetically separated and removed, the water flow resistance of the mesh 21 does not increase and the purification performance does not deteriorate.

  Further, an arrow C in FIG. 3 indicates the direction from the stern of the ship to the bow, and the pitching that swings up and down in the direction perpendicular to the paper in the C direction is the direction D in FIG. Therefore, the insertion of the magnet unit 29, the insertion of the magnet unit 29 of the purification unit by aligning the C axis in the longitudinal direction parallel to the water surface of the free water surface 63, Since the longitudinal fluctuation can be set small, the stroke of the electric cylinder 71 can be reduced, and the fluctuation control base 73 can be configured by the small electric cylinder 71.

  Further, in the upper support base 68 shown in FIG. 4, the position of the free water surface 63 is matched with the center portion indicated by the symbol E in the D direction of the upper support base 68, thereby swinging in the vertical direction within the paper surface in the direction of arrow D. On the other hand, the shaking of the central part of the upper support 68 is suppressed to a small level. Therefore, it is possible to suppress the shaking of the free water surface 63 more stably and to maintain the magnetic separation function stably and to maintain the purification performance stably.

In this embodiment, the inclinometer 72 is used to detect the inclination of the free water surface 63 and transmit it to the inclination control device 74. However, as long as the inclination of the free water surface 63 can be measured, For example, it is possible to use a plurality of water level gauges or an accelerometer.
Further, in the present embodiment example, only the filtration separation unit 19 is installed on the shaking control table 73, but all the components shown in FIG. 1 can also be installed on the shaking control table 73. It is.

  According to the ship-mounted type polluted water purification apparatus of the present embodiment, the magnetic floc 16 is removed by water when it is captured and moved by the magnetic field generating means and the capturing / moving means, so that it has a high concentration of about 95% water content. It can be recovered as sludge. For this reason, it is possible to reduce the cost when the sludge is transported to a disposal site or an incineration site by a truck or the like and composted.

  In addition, even when a large amount of pretreated water 17 is passed through the water flow area of the mesh 21 and a large amount of the magnetic floc 16 is deposited on the mesh 21, the magnetic floc 16 is surely secured by the water pressure of the washing water. Can be peeled off, and a large amount of the magnetic floc 16 peeled off by the transfer means can be moved to the magnetic field generating means side and discharged well using the magnetic field generating means and the capture moving body.

  Furthermore, even when the ship is shaken, the relative position between the free water surface 63 of the pretreated water 17 and the magnet portion 29 where the magnetic force always acts can be maintained horizontally, so that the water is washed and dropped from the filter and falls into the free water surface 63. The magnetic flocs 16 that are retained in the magnetic field can be suitably separated and removed. Therefore, the density of the magnetic floc 16 in the water on the outer surface side of the filter does not increase, the purification performance of the filter 21 can be prevented from being lowered, and the ballast water can be purified well.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to the accompanying drawings.
In the first embodiment, the filtration separation unit is kept horizontal by the shaking control means. However, in this embodiment example, only the magnet part is kept parallel to the free water surface by the shaking control means. It is an example. Therefore, the processing system of the ship-mounted polluted water purification apparatus of the present embodiment is the same as the processing system of the ship-mounted polluted water purifying apparatus of the first embodiment shown in FIG. Only the fluctuation control means unique to this embodiment will be described in detail.

  FIG. 5 is an example of a partial cross-sectional view of the filtration / separation unit 19 of the ship-mounted polluted water purification apparatus according to the present embodiment, and FIG. 6 is a part for explaining the arrangement of the filtration / separation unit 19 and the shaking control table 75. It is an enlarged view. Moreover, FIG. 7 has shown the example of the arrangement | positioning drawing explaining the fluctuation control means of the ship mounted polluted water purification apparatus of this embodiment.

  With reference to FIGS. 5, 6, and 7, the shaking control base 75 configured integrally with the magnet unit 29 will be described.

As shown in FIG. 5, the magnet portion 29 composed of the permanent magnet 31 and the support 30 is fastened by a support arm 80 and a bolt 81 integrated with a support base 79 fixed on the upper support base 78.
Further, as shown in FIG. 7, the upper support 78 is supported by at least three electric cylinders 84 from a lower support 83 fixed by a fixed leg 82 from the floor 69 of the ship. The electric cylinder 84 corresponds to the parallel maintaining means in the claims.

A procedure for maintaining the free water surface 63 in the horizontal direction using the shaking control table 75 will be described. First, two liquid level gauges 76 (only one is shown in FIG. 7) arranged in the filtration separation unit 19 are used to measure the two liquid level heights on the free water surface 63 on which the magnetic force acts. This measured value is transmitted to the inclination control device 74 (see FIG. 7).
Then, the tilt control device 74 calculates the amount of expansion and contraction of the electric cylinder 84 in order to calculate the liquid level height and the inclination of the free water surface 63 and to adjust the magnet unit 29 to the liquid level height and inclination of the free water surface 63. A control signal is transmitted to each electric cylinder 84. Each electric cylinder 84 changes the amount of expansion and contraction according to the received control signal, and always maintains the magnet unit 29 connected to the shaking control base 75 according to the liquid level height and inclination of the free water surface 63.

  According to the ship-mounted polluted water purification apparatus of the present embodiment, the magnet unit 29 can always follow the liquid level and inclination of the free water surface 63 to which the magnetic force acts, so that the magnetic force of the permanent magnet 31 is within the range of action. Since the free water surface 63 is maintained, the magnetic floc 16 washed away from the mesh 21 retained in the vicinity of the free water surface 63 with the washing water is attracted by the magnetic force and pulled up from the pretreatment water 17 by the rotating body 33. Removed. Therefore, since the magnetic floc 16 filtered by the mesh 21 is always attracted and removed by the magnetic force, the water flow resistance of the mesh 21 does not increase and the purification performance does not deteriorate.

  Furthermore, in this embodiment, since only the magnet portion 29 and its supporting material are to be controlled, the upper support 78 can be greatly reduced in size and the load applied to the upper support 78 is small. 84 can be reduced in size, and the cost reduction and the effect of facilitating installation on a ship are produced.

  In the present embodiment, the case where the electric cylinder 84 is applied is shown, but the same effect can be obtained even when various actuators such as a hydraulic cylinder and an air cylinder are applied. In this embodiment, an example is shown in which the actuator is actively controlled by using the tilt control device 74 as the shake control means. However, the damper is passively damped by the spring, rubber, air pressure, or the like according to the shake of the ship. It is also possible to adopt a configuration having the fluctuation control means.

  As described above, in the embodiment described above, many items are specifically described, but this is only an example for explaining the present invention. A person having ordinary knowledge in the technical field to which the present invention belongs can implement various modifications based on the present invention.

For example, the ship-mounted polluted water purification apparatus according to the present invention is used when water is poured into the ship, when the ballast water is drained outside the ship, or the ballast water is purified while navigating. The ballast water can be purified at any timing, such as when used.
Moreover, the ship-mounted polluted water purification apparatus according to the present invention can be used not only as ballast water but also as a purification apparatus for domestic wastewater generated in ships.
Furthermore, the present invention can be applied to a dedicated ship for purifying ballast water, domestic wastewater, etc. of other ships.

  Thus, the present invention is not limited to the above-described embodiment, but is defined by the technical idea described in the claims.

It is a processing system diagram of a shipboard type polluted water purification apparatus. It is a fragmentary sectional view of a filtration separation part. It is AA sectional drawing of the filtration isolation | separation part shown in FIG. It is the layout which installed the filtration separation part on the shaking control stand It is a fragmentary sectional view of the filtration separation part in the example of a 2nd embodiment. It is the elements on larger scale of a filtration separation part and an oscillation control means. It is a layout view of the filtration separation unit and the shaking control means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Raw water storage tank 5 Seeding agent adjustment apparatus 11 Polymer agent adjustment apparatus 16 Magnetic floc 17 Pretreatment water 20 Rotating drum 21 Mesh 22 Water tank 25 Purified water tank 28 Spray 29 Magnet part 31 Permanent magnet 33 Rotating body 38 Scraper 39 Sludge collection tank 72 Inclinometer 68 Upper support 71, 84 Electric cylinder 75, 75 Oscillation control stand 74 Inclination control device 76 Water level gauge 78 Upper support stand

Claims (12)

A ship-mounted polluted water purification device for purifying raw water containing objects to be removed in a ship,
Raw water treatment means for producing pretreated water containing magnetic flocs from the removal object contained in the raw water;
Filter separation means for filtering and separating the magnetic floc from the pretreated water generated by the raw water treatment means, using a filter medium having an opening through which the magnetic floc cannot pass;
The floc removal means for removing the magnetic floc filtered and separated by the filtration separation means from the filter medium and dropping it again onto the free water surface of the pretreated water;
Including magnetic separation means for attracting and collecting the magnetic floc dropped on the free water surface by the floc removing means by applying a magnetic force from the free water surface;
A ship-mounted polluted water purification device. The raw water treatment means is
A magnetizing means for generating an aqueous solution containing magnetic micro flocs from the object to be removed by adding a seeding agent to the raw water and stirring;
A floc that generates pretreated water grown from the magnetic micro floc to the magnetic floc by adding and stirring a polymer reinforcing agent to the aqueous solution containing the magnetic micro floc generated by the magnetizing means. Composed of growth means,
The ship-mounted polluted water purification apparatus according to claim 1. The seeding agent comprises a magnetic substance and a flocculant,
The polymer reinforcing agent comprises a polymer;
The ship-mounted polluted water purification apparatus according to claim 2. Including shaking control means for maintaining the free water surface of the pretreatment water on which the magnetic force of the magnetic separation means acts,
The ship-mounted polluted water purification apparatus according to any one of claims 1 to 3. The shaking control means includes
An inclination measuring means for measuring an inclination of a free water surface of the pretreated water on which a magnetic force of the magnetic separation means acts;
Inclination control means for transmitting a control signal for maintaining the free water surface horizontal based on the measurement value measured by the inclination measurement means;
Level maintaining means for maintaining a free water surface horizontally in accordance with the control signal transmitted from the tilt control means, at least a gantry on which the magnetic separation means is suspended;
The ship-mounted polluted water purification apparatus according to claim 4. The inclination measuring means is composed of an inclinometer, an accelerometer or a water level meter;
The ship-mounted polluted water purification apparatus according to claim 5. The level maintaining means includes
Comprising at least three actuators for supporting the gantry;
The ship-mounted polluted water purification apparatus according to claim 5 or 6, characterized in that. The magnetic separation means includes
The free water surface of the pretreated water on which the magnetic force of the magnetic separation means acts is arranged so as to be located on the center line of the gantry,
The ship-mounted polluted water purification apparatus according to any one of claims 5 to 7. Including a shaking control means for maintaining a magnetic field generating means for generating a magnetic force in the magnetic separation means in parallel and at the same height as the free water surface of the pretreated water on which the magnetic force acts,
The ship-mounted polluted water purification apparatus according to any one of claims 1 to 3. The shaking control means includes
An inclination measuring means for measuring an inclination of a free water surface of the pretreated water on which a magnetic force of the magnetic separation means acts;
Inclination control means for transmitting a control signal that is maintained in parallel and at the same height based on the measurement value measured by the inclination measurement means;
Parallel maintaining means for maintaining the gantry on which the magnetic field generating means is suspended so that the magnetic field generating means is parallel and at the same height with respect to the free water surface in accordance with a control signal transmitted from the tilt control means; Including
The ship-mounted polluted water purification apparatus according to claim 9. The inclination measuring means is constituted by any of a plurality of water level meters, water level meters and inclinometers, or water level meters and accelerometers,
The ship-mounted polluted water purification apparatus according to claim 10. The parallel maintaining means includes
Comprising at least three actuators for supporting the gantry;
The ship-mounted polluted water purification apparatus according to any one of claims 9 to 11, characterized by:

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