JP2003038984A - Purification device using magnetic material - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To capture suspended solids by magnetic force directly in the flow of water to be treated, thereby simplifying the apparatus and improving the processing performance as compared with the conventional filter system. Aim. SOLUTION: A flow bed made of a non-magnetic material is provided at the bottom of the inclined flow path, and a magnet is arranged outside the flow path below the flow bed, and the inside of the flow path is moved by the magnetic force of the magnet. The floating solids that flow down are sucked into the flow bed side, and are lowered by the flow of the water to be treated to a lower floating solids recovery area.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention mainly relates to a flocculant containing magnetic fine particles, which makes a contaminant in the water to be treated into a magnetically suspended solid, which is magnetically generated in the flow of the water to be treated. The present invention relates to a purification device for separating the floating solid matter from water to be treated.

[0002]

[Prior Art] Generally, purified water (clean water, sewage, industrial wastewater)
Treatment, especially when separating eutrophied sludge (mainly phosphorus-containing substances) from the water to be treated, for example, ferrite (such as magnetite) produced by using a high gradient magnetic field. Super strong magnetic substance: hereinafter referred to as magnetic substance fine particles), a contaminant in the water to be treated is made into a suspended solid substance (flock) with magnetism, and the water to be treated in this state is a rotary drum type. A purifying device has been proposed that filters through a filter and removes and collects suspended solids adhering to the surface of the filter by magnetic force (see, for example, JP 2001-104967 A).

The problem with this purification device is that the ability to collect suspended solids depends on the filter mesh.
To filter a huge amount of water to be treated,
Corresponding to the treatment capacity of the purification device, it is necessary to secure it, and it is unavoidable that the device becomes complicated and large, and considering the resistance of the water to be treated when passing through the filter, the filter There is a limit to the mesh, and it is impossible to completely remove contaminants in the water to be treated.

[0004]

SUMMARY OF THE INVENTION The present invention has been made based on the above circumstances, and its purpose is to pay attention to the fact that each suspended solid matter has magnetism by pretreatment, It is an object of the present invention to provide a purifying device using a magnetic material, which simplifies the device and improves the treating ability by directly capturing suspended solids by magnetic force in the flow of water to be treated.

[0005]

Therefore, in the present invention,
In the purifying device for separating the suspended solids from the water to be treated by magnetic force in the flow of the water to be treated, the suspended solids having magnetism in the water to be treated with an aggregating agent containing magnetic fine particles, A floating bed made of a non-magnetic material is provided at the bottom of the inclined flow path, and a magnet is arranged outside the flow path below the flow bed, and the floating solid matter flows down in the flow path by the magnetic force of the magnet. Is sucked toward the flow bed side, and with the flow of water to be treated,
It is characterized in that it is configured to be lowered to the low-level suspended solids recovery region.

In such a structure, the magnetic force of the magnet can exert the trapping function of all the suspended solids with respect to the total amount of the flow of the water to be treated, and the treating ability is also dependent on the magnetic force. The advantage that can be improved is obtained.

In this case, as an embodiment of the present invention, the inclined flow paths are formed in a plurality of stages, and the floating solid matter recovery region is formed at the lower end of each flow path, and the magnet is Regarding the flow direction of the inclined flow channel, the distribution of the magnetic force applied to the water to be treated is set to be desired so that the upstream portion and the downstream portion of the inclined flow channel are different, and further, the magnet is a permanent magnet, It is preferably configured as a magnetic field generator in which an electromagnet or a superconductor is magnetized. This is to improve the simplification of the structure and functionality of the purification device, and to meet the required multipurpose purification purposes such as separating and collecting suspended solids due to the difference in magnetic force of the magnets. , Has the effect of bringing versatility.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. Note that FIG. 1 shows the first
2 is a schematic configuration diagram showing a side surface of the embodiment of FIG. 2, and FIG. 2 is a schematic configuration diagram showing a side surface of the second embodiment.

(First Embodiment) The purifying apparatus according to the present invention is a flocculant containing magnetic fine particles, and the contaminants in the water to be treated are suspended solids S having magnetism, and the water W to be treated is treated. In this flow, the suspended solids S are separated from the water W to be treated by the magnetic force. Here, a flow bed 11 made of a non-magnetic material (for example, a hard synthetic resin) is provided at the bottom of the inclined flow channel 1, and a magnet 2 is provided outside the flow channel 1 below the flow bed 11.
(For example, a permanent magnet of 1 Tesla or less, preferably 100
(Permanent magnet of millitesla to 500 millitesla) is arranged, and the magnetic force of the magnet attracts the suspended solids S flowing down from the upstream side to the downstream side in the flow path 1 toward the flow bed 11 side, and the flow of the water to be treated. Then, it is configured to be lowered to the lower floating solid matter recovery region 12.

Instead of a permanent magnet, for example, an electromagnet or a bulk material magnetized to 1 to 2 tesla (oxide superconductor made of ceramics obtained by sintering various metal oxides) is used as the magnet 2 described above. It may be arranged so that the floating solid matter S in the water to be treated is sucked toward the flow bed 11 by this magnetic force. In order to maintain the magnetic force of the oxide superconductor having such a configuration, for example, a refrigerant such as helium gas is used in a vacuum container at an extremely low temperature (preferably an absolute temperature of 4 to 4).
A refrigerator (not shown) devised to maintain the temperature at 100 degrees is used.

On the upper surface of the flow bed 11, the suspended solids S in the water to be treated W flowing down the flow path 1 are attracted by the large magnetic force of the magnet 2 acting thereon, and the By the flow of the treated water W, it is dropped / precipitated in the low-level suspended solids recovery region 12. Then, the supernatant water W to be treated is collected at a desired location as purified water. At this time, the magnetic force of the magnet 2 below the flow bed 11 into the flow path 1 needs to be sufficient to completely suck the suspended solid matter S toward the flow bed 11.

(Second Embodiment) In this embodiment, as shown in FIG. 2, the inclined channel 1 has a plurality of stages (for example,
The first flow path 1A and the second flow path 1B), and the suspended solid recovery areas 12A and 12B are respectively formed at the lower ends of the flow paths. Thus, by configuring the flow path 1 in multiple stages, it is possible to ensure more complete precipitation and recovery of the suspended solids S. At this time, the magnets 2A and 2B have desired magnetic force distributions to be given to the water to be treated so that the upstream and downstream portions of the inclined flow channel 1 are different with respect to the flow direction of the inclined flow channel 1. Good. In this case, depending on the strength of the magnetic force of the magnets 2A, 2B, it is possible to separate the flocs (floating solids) different from each other that are attracted to the side of the fluidized bed 11 and perform the function of precipitating and collecting.

(Other Embodiments) As the magnet 2 used in the present invention, a so-called magnetic field generator such as an electromagnet may be used instead of the above-mentioned permanent magnet or magnetized superconductor. Of course good things. Further, the form and length of the flow path are not limited to the above-mentioned embodiment as long as the technical idea of the present invention can be realized.

[0014]

As described above, the present invention is a flocculant containing magnetic fine particles, which makes the suspended solids in the water to be treated into magnetic suspended solids in the flow of the water to be treated. In the purifying device that separates the suspended solids from the water to be treated by magnetic force, a flow bed made of a non-magnetic material is provided at the bottom of the inclined channel, and a magnet is provided outside the channel at the lower side thereof. And the magnetic force of the magnet attracts the suspended solids flowing down in the flow path to the bed side, and the flow of water to be treated causes the suspended solids to fall to a lower suspended solids recovery region. I am configuring.

Therefore, the suspended solids can be captured by the magnetic force directly in the flow of the water to be treated, so that the apparatus can be simplified and the treatment ability can be improved as compared with the conventional filter system. You can

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a first embodiment according to the present invention.

FIG. 2 is also a schematic configuration diagram showing a second embodiment according to the present invention.

[Explanation of symbols]

1 flow path 11 drift bed 12 Floating solids collection area 2 magnets

Claims (4)

[Claims] 1. A flocculant containing magnetic fine particles is used to convert a contaminant in water to be treated into a magnetic suspended solid, and the suspended solid is separated from the treated water by a magnetic force in a stream of the treated water. In the purifying device, a flow bed made of a non-magnetic material is provided at the bottom of the inclined flow path, and a magnet is arranged outside the flow path below the flow bed.
By the magnetic force of the magnet, the floating solid matter flowing down in the flow path is sucked to the bed side, and is lowered to a lower floating solid matter recovery region by the flow of the water to be treated. Purification device using magnetic material. 2. The magnetic body according to claim 1, wherein the inclined flow passage is formed in a plurality of stages, and the suspended solid recovery region is formed at the lower end of each flow passage. Purification device. 3. The magnet so that the upstream portion and the downstream portion of the inclined flow channel differ in the flow direction of the inclined flow channel,
The purification device using a magnetic material according to claim 1 or 2, wherein the distribution of magnetic force applied to the water to be treated is set as desired. 4. The magnetic body according to claim 1, wherein the magnet is configured as a magnetic field generator that magnetizes a permanent magnet, an electromagnet or a superconductor. The purification device that was.