JP3799390B2 - Purification device using magnetic material - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is mainly a flocculant containing magnetic fine particles, and the contaminants in the water to be treated are made to be floating solids having magnetism, and the suspended solids are covered by the magnetic force in the flow of the water to be treated. The present invention relates to a purification device that separates from treated water.
[0002]
[Prior art]
In general, in the treatment of purified water (water, sewage, industrial wastewater), particularly when separating eutrophic sludge (mainly phosphorus-containing material) from the treated water, it was generated using a high gradient magnetic field. For example, a flocculant containing ferrite (powder or granular super strong magnetic material: hereinafter referred to as magnetic fine particles) such as magnetite, and the pollutant in the water to be treated is made into a magnetically suspended solid (floc). A purification device has been proposed that filters the water to be treated in this state through a rotary drum filter, and removes and collects suspended solids attached to the filter surface by magnetic force (for example, (See JP 2001-104967 A).
[0003]
The problem with this purification device is that the ability to collect suspended solids depends on the filter mesh. To filter a large amount of water to be treated, the surface area of the filter corresponds to the processing capacity of the purification device. Therefore, it is necessary to ensure the complexity and size of the equipment, and considering the resistance of the water to be treated when passing through the filter, there is a limit to the filter mesh to be used. In addition, the contaminants in the water to be treated cannot be removed.
[0004]
[Problems to be solved by the invention]
The present invention has been made based on the above circumstances, and its object is to pay attention to the fact that each suspended solid has magnetism by pretreatment, and directly in the flow of water to be treated. An object of the present invention is to provide a purification apparatus using a magnetic material, which simplifies the apparatus and improves the processing performance by capturing suspended solids by magnetic force.
[0005]
[Means for Solving the Problems]
For this reason, the purification apparatus using the magnetic material of the present invention is a flocculant containing magnetic fine particles, and the contaminants in the water to be treated are suspended solids having magnetism, and in the flow of the water to be treated, In the purification device that separates the suspended solids from the water to be treated by magnetic force,
A first magnet is disposed inside, and a first rotating drum that adsorbs the floating solid matter to the peripheral surface by the magnetic force of the magnet is disposed in the flow path of the water to be treated.
A second magnet is disposed inside, and the second rotating drum that adsorbs the suspended solid adsorbed on the peripheral surface of the rotating drum by the magnetic force of the magnet to the peripheral surface of the first rotating drum. It is located in the close position facing the surface,
A purifying apparatus configured to deliver a magnetic force larger than the magnetic force of the first magnet at the opposed position on the peripheral surface of the first rotating drum by the second magnet to transfer the suspended solid matter. Because
The first rotating drum is configured to rotationally drive an exterior member made of a non-magnetic material that constitutes a peripheral surface thereof, and a first magnet fixed at a fixed position is provided in the exterior member. The first magnets in the close proximity to each other are arranged and configured so that the magnetic force is reduced in the magnetic field of the second magnet,
The second rotating drum is configured to rotationally drive an exterior member made of a non-magnetic material that constitutes the peripheral surface of the second rotary drum, and at a fixed position close to the peripheral surface of the first rotary drum in the exterior member. Equipped with a fixed second magnet,
A plurality of second rotating drums are prepared, and a plurality of adjacent positions facing the peripheral surface of the first rotating drum are provided and arranged respectively, and each of the adjacent rotating drums is disposed when delivering the floating solid from the first rotating drum. It is characterized in that floating solids are separated and recovered by the difference in magnetic force between the respective second magnets at a position.
[0006]
In such a configuration, the magnetic force by the first magnet can exhibit the trapping function of all suspended solids with respect to the total amount of the water to be treated, and the processing ability is also unambiguous depending on the magnetic force. The merit that can be improved is obtained.
[0007]
In this case, as an embodiment of the present invention, the first rotating drum is configured to rotationally drive an exterior member made of a nonmagnetic material that constitutes the peripheral surface thereof, and the exterior member is included in the exterior member. A first magnet that rotates integrally with the first rotating drum, or a configuration in which the first rotating drum is configured to rotationally drive an outer member made of a non-magnetic material that constitutes the peripheral surface of the first rotating drum. The member is equipped with a first magnet fixed at a fixed position, and the first magnet is arranged and configured so that its magnetic force is reduced in the magnetic field of the second magnet. preferable. This is effective in simplifying the structure and improving the functionality of the first rotating drum.
[0008]
In addition, as an embodiment of the present invention, the second rotating drum is configured to rotate and drive an exterior member made of a non-magnetic material, which constitutes the peripheral surface in cooperation with the first rotating drum, It is effective to equip the exterior member with a second magnet fixed at a fixed position close to the peripheral surface of the first rotating drum.
[0009]
In addition, a plurality of second rotating drums are prepared, and when the suspended solids are transferred from the first rotating drum, the suspended solids can be separated and collected by the difference in magnetic force between the respective second magnets. In responding to the required multiple purposes of purification, versatility can be brought about.
[0010]
In addition, the coagulant containing magnetic fine particles makes the pollutant in the water to be treated a magnetically suspended solid that is separated from the water to be treated by magnetic force in the water to be treated. In the purification device to
A first magnet is disposed inside, and a first rotating drum that adsorbs the floating solid matter to the peripheral surface by the magnetic force of the magnet is disposed in the flow path of the water to be treated.
A second magnet is disposed inside, and the second rotating drum that adsorbs the suspended solid adsorbed on the peripheral surface of the rotating drum by the magnetic force of the magnet to the peripheral surface of the first rotating drum. It is located in the close position facing the surface,
A purifying apparatus configured to deliver a magnetic force larger than the magnetic force of the first magnet at the opposed position on the peripheral surface of the first rotating drum by the second magnet to transfer the suspended solid matter. Because
The first rotating drum is configured to rotationally drive an exterior member made of a non-magnetic material that constitutes a peripheral surface thereof, and a first magnet fixed at a fixed position is provided in the exterior member. The first magnets in the close proximity to each other are arranged and configured so that the magnetic force is reduced in the magnetic field of the second magnet,
The second rotating drum is configured to rotationally drive an exterior member made of a non-magnetic material that constitutes the peripheral surface of the second rotary drum, and at a fixed position close to the peripheral surface of the first rotary drum in the exterior member. Equipped with a fixed second magnet,
The purification device having the first and second rotating drums as a unit is arranged in multiple stages in the direction of the flow path of the water to be treated, thereby improving the integrity of the recovery process of the floating solid matter. Features.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. 1 is a schematic configuration diagram illustrating a side surface of the first embodiment, FIG. 2 is a schematic configuration diagram illustrating a side surface of the second embodiment, and FIG. 3 illustrates a side surface of the third embodiment. FIG. 4 is a schematic configuration diagram, FIG. 4 is a schematic configuration diagram showing a side surface of the fourth embodiment, and FIG. 5 is a schematic configuration diagram showing a side surface of the fifth embodiment.
[0012]
(First embodiment)
The purification apparatus according to the present invention is a flocculant containing magnetic fine particles, and the pollutant in the water to be treated is made to be a suspended solid S having magnetism, and the solid to be floated by magnetic force in the flow of the water to be treated W. The object S is separated from the water W to be treated. Here, a first magnet 1 (for example, a permanent magnet of 1 Tesla or less, preferably a permanent magnet of 100 to 500 millitesla) is disposed inside, and a suspended solid S on the circumferential surface by the magnetic force of the magnet 1. And a second magnet 3 (for example, a bulk material magnetized to 1 to 2 Tesla: a ceramic oxide superconductor made by sintering various metal oxides). Then, the second rotating drum 4 that adsorbs the floating solid S adsorbed on the peripheral surface of the rotating drum 2 by the magnetic force of the magnet 3 is disposed in the flow path 5 of the water W to be treated. is doing. In order to maintain the magnetic force of the second magnet 3, for example, a refrigeration devised to maintain an ultra-low temperature (preferably an absolute temperature of 4 to 100 degrees) using a refrigerant such as helium gas in a vacuum vessel. A machine (not shown) is used.
[0013]
Then, a magnetic force larger than the magnetic force of the first magnet 1 on the peripheral surface of the first rotating drum 2 is applied to the suspended solid S by the second magnet 3 and transferred. In this embodiment, the first rotating drum 2 is configured to rotationally drive an exterior member 21 made of a nonmagnetic material (for example, hard synthetic resin) that constitutes the peripheral surface thereof, and the exterior member thereof. 21 is equipped with a first magnet 1 that rotates integrally with the exterior member 21. In addition, the second rotating drum 4 is configured to rotationally drive an exterior member 41 made of a nonmagnetic material (for example, hard synthetic resin) that constitutes the peripheral surface of the second rotary drum 4, and in the exterior member 41, The second magnet 3 is fixed at a fixed position close to the peripheral surface of the rotary drum 2.
[0014]
In such a configuration, the flow path 5 is a region having a limited depth (an arc-shaped region along the circumferential surface of the first rotating drum 2), and the flow path 5 is magnetically generated by the first magnet 1. The suspended solid S is adsorbed on the drum peripheral surface from the water to be treated W flowing through the drum. Then, by rotation of the exterior member 21 (in this embodiment, the water-impregnated portion of the exterior member 21 is rotationally driven by an appropriate drive means so as to move in the direction opposite to the flow of the water to be treated W). The suspended solid S adsorbed on the drum peripheral surface is guided from the water to be treated W to above the flow path 5. In the arc-shaped region, the magnetic force of the magnet 1 has a strength necessary for adsorbing all the floating solids S passing there.
[0015]
On the other hand, in the upper part of the flow path 5, the magnetic force larger than the magnetic force of the first magnet 1 on the peripheral surface of the first rotating drum 2 is attached to the peripheral surface of the exterior member 21 by the second magnet 3. By acting on the solid material S, it is adsorbed on the surface of the exterior member 41 on the second rotating drum 4 side. Thereby, the floating solid S is delivered from the first rotating drum 2 to the second rotating drum 4.
[0016]
The floating solid S adhering to the surface of the exterior member 41 is scraped off by the blade 6 at a position away from the magnet 3, for example, in this embodiment, and is discharged to the outside through the recovery path 7. In this way, the magnetic force of the first magnet 1 can exhibit the trapping function of all the suspended solids S with respect to the total amount of the water to be treated W, and the processing ability also depends on the magnetic force. It can be improved uniquely.
[0017]
(Second Embodiment)
In this embodiment, as shown in FIG. 2, the first rotating drum 2 is configured to rotate and drive the exterior member 21 made of a nonmagnetic material that constitutes the peripheral surface of the first rotary drum 2. The first magnet 1 is fixed at a fixed position, and the first magnet 1 is arranged and configured so that its magnetic force is reduced in the magnetic field of the second magnet 3 (this In the embodiment, the first magnet 1 is missing at the place where the floating solid S is transferred from the first rotating drum 2 to the second rotating drum 4). Since other configurations and functions are the same as those in the first embodiment, the description thereof is omitted.
[0018]
(Third embodiment)
In the second embodiment, as shown in FIG. 3, the first magnet 1 is separated from the peripheral surface of the exterior member 21 as it moves upward from the liquid surface of the water to be treated W. In addition, it facilitates the transport of the floating solid S adhering to the peripheral surface of the exterior member 21, and at the transfer point from the first rotary drum 2 to the second rotary drum 4, The magnetic force of the first magnet 1 can be reduced and the magnetic force of the second magnet can be relatively increased. Since other configurations and functions are the same as those in the first and second embodiments, the description thereof is omitted.
[0019]
(Fourth embodiment)
In the above-described embodiment, a plurality of second rotating drums 4 (here, two sets of rotating drums 4A and 4B) are prepared and floated from the first rotating drum 2 as shown in FIG. Configuration of separating and collecting floating solids by the difference in magnetic force between the second magnets 3A and 3B (for example, the former is 1 to 2 Tesla and the latter is 2 to 3 Tesla) when the solid S is delivered It may be. As a result, with respect to the suspended solid S on the surface of the exterior member 21 in the first rotating drum 2, the transfer of the strong magnetic material and the weak magnetic material is transferred to each of the rotating drums 4A and 4B. And 7B can be separated and recovered.
[0020]
(Fifth embodiment)
The above purification apparatus shows a configuration in which the first and second rotary drums 2 and 4 are unitized. In this embodiment, as shown in FIG. In the direction of the flow path of the water to be treated, it may be arranged in multiple stages (two stages in this embodiment). Thereby, the collection | recovery of a floating solid in the flow path of to-be-processed water is realizable more reliably.
[0021]
(Other embodiments)
The first and second magnets 1 and 3 employed in the present invention may employ so-called magnetic field generators such as electromagnets instead of the above-described permanent magnets and magnetized superconductors. Of course.
[0022]
【The invention's effect】
As described in detail above, the present invention is a flocculant containing magnetic fine particles, and the pollutant in the water to be treated is a floating solid having magnetism, and in the flow of water to be treated, by magnetic force, In the purification apparatus for separating the floating solid from the water to be treated, a first rotating drum that arranges a first magnet inside and adsorbs the floating solid on a peripheral surface by the magnetic force of the magnet, The second magnet is disposed on the second rotating drum that adsorbs the suspended solid adsorbed on the circumferential surface of the rotating drum by the magnetic force of the magnet to the surface of the water to be treated. A magnetic force larger than the magnetic force of the first magnet on the circumferential surface of the first rotating drum is applied to the floating solid by the second magnet, and is delivered. Features.
[0023]
Therefore, since the suspended solids can be captured directly by the magnetic force in the flow of the water to be treated, the apparatus can be simplified and the processing performance can be improved as compared with the conventional filter system.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing a first embodiment according to the present invention.
FIG. 2 is a schematic configuration diagram showing a second embodiment according to the present invention.
FIG. 3 is a schematic configuration diagram showing a third embodiment according to the present invention.
FIG. 4 is a schematic configuration diagram showing a fourth embodiment according to the present invention.
FIG. 5 is also a schematic configuration diagram showing a fifth embodiment according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 1st magnet 2 1st rotation drum 21 Exterior member 3 2nd magnet 4 2nd rotation drum 41 Exterior member 5 Flow path 6 Blade 7 Collection path S Floating solid W W

Claims (2)

Purification that separates suspended solids from the water to be treated by magnetic force in the flow of the water to be treated, using a flocculant containing magnetic fine particles as a contaminant in the water to be treated. In the device
A first magnet is disposed inside, and a first rotating drum that adsorbs the floating solid matter to the peripheral surface by the magnetic force of the magnet is disposed in the flow path of the water to be treated.
A second magnet is disposed inside, and the second rotating drum that adsorbs the suspended solid adsorbed on the peripheral surface of the rotating drum by the magnetic force of the magnet to the peripheral surface of the first rotating drum. It is located in the close position facing the surface,
A purifying apparatus configured to deliver a magnetic force larger than the magnetic force of the first magnet at the opposed position on the peripheral surface of the first rotating drum by the second magnet to transfer the suspended solid matter. Because
The first rotating drum is configured to rotationally drive an exterior member made of a non-magnetic material that constitutes a peripheral surface thereof, and a first magnet fixed at a fixed position is provided in the exterior member. The first magnets in the close proximity to each other are arranged and configured so that the magnetic force is reduced in the magnetic field of the second magnet,
The second rotating drum is configured to rotationally drive an exterior member made of a non-magnetic material that constitutes the peripheral surface of the second rotary drum, and at a fixed position close to the peripheral surface of the first rotary drum in the exterior member. Equipped with a fixed second magnet,
A plurality of second rotating drums are prepared, and a plurality of adjacent positions facing the peripheral surface of the first rotating drum are provided and arranged respectively, and each of the adjacent rotating drums is disposed when delivering the floating solid from the first rotating drum. A purification device using a magnetic material, wherein a suspended solid is separated and collected by a difference in magnetic force between each second magnet at a position. Purification that separates suspended solids from the water to be treated by magnetic force in the flow of the water to be treated, using a flocculant containing magnetic fine particles as a contaminant in the water to be treated. In the device
A first magnet is disposed inside, and a first rotating drum that adsorbs the floating solid matter to the peripheral surface by the magnetic force of the magnet is disposed in the flow path of the water to be treated.
A second magnet is disposed inside, and the second rotating drum that adsorbs the suspended solid adsorbed on the peripheral surface of the rotating drum by the magnetic force of the magnet to the peripheral surface of the first rotating drum. It is located in the close position facing the surface,
A purifying apparatus configured to deliver a magnetic force larger than the magnetic force of the first magnet at the opposed position on the peripheral surface of the first rotating drum by the second magnet to transfer the suspended solid matter. Because
The first rotating drum is configured to rotationally drive an exterior member made of a non-magnetic material that constitutes a peripheral surface thereof, and a first magnet fixed at a fixed position is provided in the exterior member. The first magnets in the close proximity to each other are arranged and configured so that the magnetic force is reduced in the magnetic field of the second magnet,
The second rotating drum is configured to rotationally drive an exterior member made of a non-magnetic material that constitutes the peripheral surface of the second rotary drum, and at a fixed position close to the peripheral surface of the first rotary drum in the exterior member. Equipped with a fixed second magnet,
The purification device having the first and second rotating drums as a unit is arranged in multiple stages in the direction of the flow path of the water to be treated, thereby improving the integrity of the recovery process of the floating solid matter. A purification device using a magnetic material.

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