JPH02265689A - Water treatment apparatus - Google Patents

Abstract

PURPOSE:To enhance purifying effect by providing a magnetic treatment flow passage magnetically treating water to be treated and magnetic separation flow passages having filter elements consisting of a large number of ferromagnetic fine wires arranged thereto to attract and remove magnetic fine particles in an apparatus main body. CONSTITUTION:A water treatment apparatus A arranged in a building is constituted so that a non-magnetic cell 35 consisting of a magnetic treatment tank 36 forming a magnetic generation part M by upper and lower permanent magnets 31, 32 and forming a magnetic treatment flow passage P1 in said part M and a magnetic separation tank 37 forming a plurality of magnetic separation flow passages P2 by partition plates 38-42 is arranged in a return frame composed of soft iron in a detachable manner. The water to be treated from an inflow pipe 33 is magnetically treated in the magnetic treatment flow passage P1 and successively flows through each of the magnetic separation flow passages P2 provided with a large number of ferromagnetic fine wires 50 under tension and flows out from an outflow pipe 34 while floated and suspended magnetic fine particles are attracted and removed. By this method, paramagnetic fine particles can be also removed efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a water treatment device for improving water quality or purifying water using a magnetic field.

(b) Prior Art Conventionally, water treatment apparatuses for the above purpose include the following types.

■ JP-A-63-116797 and JP-A-63-270
593, which treats paramagnetic red rust (Feze) floating as suspended magnetic particles in water.
The fine particles of s) can be changed into fine particles of ferromagnetic black rust (Fe>04), aggregated, and effectively precipitated in the water tank for removal.

■ This is a water treatment device described in JP-A No. 63-270593, which converts paramagnetic red rust scale on pipe walls into ferromagnetic black rust and effectively removes it. This is a water treatment equipment described in the above issue, and the flow rate at which the treated water passes through the magnetic field is 0.8 m/sec.
c or more, the effect of the magnetic treatment becomes significant, and the scale adhering to the wall of the water supply pipe on the downstream side can be removed by the magnetic treatment.

■ JP-A-59-43208 and JP-A-60-4820
This water treatment device is described in No. 9, and is capable of adsorbing and removing even very small particles using a high gradient magnetic field formed around a ferromagnetic thin wire. Furthermore, by eliminating the magnetic field, adsorbed particles can be easily cleaned.

(c) Problems to be Solved by the Invention However, each of the water treatment apparatuses described above still has the following problems to be solved.

■The water treatment equipment uses natural sedimentation, so
Very small particles cannot be removed, and aquarium maintenance cannot be performed unless the water is turned off.

In the water treatment equipment (2), scale that has peeled off and flowed downstream may accumulate in inappropriate locations or cause clogging of valves, etc.

In the water treatment equipment (2), ferromagnetic particles can be easily adsorbed, but paramagnetic particles require a strong magnetic field, which increases the size and cost of the equipment.

Furthermore, the above-mentioned conventional water treatment devices not only have their own problems, but also because they are equipped with only either a magnetic treatment channel or a magnetic separation channel, they cannot sufficiently remove magnetic particles. Therefore, it was not possible to take complete countermeasures against red water.

The present invention combines the effects of magnetic treatment and magnetic separation in the same water treatment equipment, solves the problems of each individual equipment, effectively achieves red water countermeasures, and is small and low-cost. The purpose is to provide low cost water treatment equipment.

(d) Means for Solving the Problems The present invention provides a magnetic treatment flow path in which treated water is introduced into a magnetic field generated by a permanent magnet, an electromagnet, a superconducting magnet, etc., and subjected to magnetic treatment. Then, treated water is introduced into a magnetic field generated by a permanent magnet, electromagnet, superconducting magnet, etc., and a filter element made of a large number of ferromagnetic wires or small pieces of ferromagnetic material is placed in the treated water. The present invention relates to a water treatment apparatus characterized in that it is integrally provided with a magnetic separation channel that adsorbs and removes magnetic fine particles floating in treated water.

(e) Action and effect With the above configuration, the present invention has the following effects.

■Since a magnetic treatment channel and a magnetic separation channel can be formed in the same water treatment equipment, it is possible to perform magnetic treatment and magnetic separation of treated water while keeping the structure of the water treatment equipment compact. , it is possible to effectively remove not only ferromagnetic particles but also paramagnetic particles, which have conventionally been difficult to separate and remove.

■The cross-sectional area of the magnetic processing channel is different from the cross-sectional area of the magnetic separation channel, that is, the cross-sectional area of the magnetic processing channel is smaller than the cross-sectional area of the magnetic separation channel, and the cross-sectional area of the channel is In a narrow magnetic processing channel, the flow rate can be set to the most suitable speed for performing magnetic processing, and the efficiency of the magnetic processing effect can be significantly improved. On the other hand, in a magnetic separation channel with a large channel cross-sectional area, it is possible to lower the flow velocity considerably compared to a magnetic processing channel, and the performance of magnetic separation can be significantly improved. Therefore, the effect of removing the magnetic fine particles described above can be further improved.

(F) Example Hereinafter, the water treatment apparatus A according to the present invention will be specifically explained based on the example shown in the attached drawings.

As shown in FIG. 1, this embodiment is an example in which a water treatment device A is installed in a building B.

In opening and opening, the first water supply pipe 11 branched from the water main pipe (not shown) is connected to the stop valve 12. It is connected to a water receiving unit 14 through a water meter 13.

Further, the water receiving tank 14 is connected by a pump 15 and a second water supply pipe 16 to a water treatment device A, which constitutes the gist of the present invention.

Further, the elevated tank 17 is connected to the usage locations on each floor of the building B by a third water supply pipe 1B.

Further, a fourth water supply pipe 19 to which a pump 20 is attached is connected to the third water supply pipe 18, and the other end of the fourth water supply pipe 19 is connected to the water treatment equipment HA, forming a circulation flow path. are doing.

In the water treatment apparatus A, as described below, there is a magnetic treatment channel P1 in which treated water is introduced into a magnetic field generated by a permanent magnet, an electromagnet, a superconducting magnet, etc., and subjected to magnetic treatment. Then, the treated water is introduced into a magnetic field generated by a permanent magnet, an electromagnet, a superconducting magnet, etc., and a filter element consisting of a large number of ferromagnetic wires or small pieces of ferromagnetic material is placed in the treatment tank. A magnetic separation channel P2 that adsorbs and removes magnetic fine particles floating in the treated water is integrally provided.

With this configuration, the third water supply pipe 18 and the fourth
By circulating the treated water between the water supply pipe 19 and the elevated tank 17, suspended magnetic particles on the primary side of the water main etc. are adsorbed and removed by the magnetic separation effect of the magnetic separation channel P2, and each water supply pipe By circulating the black rust fine particles generated when the scale attached to the tube wall of 18.19 is peeled off by the magnetic treatment effect of the magnetic treatment channel P1, they are adsorbed by the magnetic separation effect of the magnetic separation channel P2. Can be removed.

Hereinafter, the structure of the water treatment apparatus A will be explained with reference to FIGS. 2 to 5.

As shown in FIGS. 2 and 3, 30 is a return frame made of soft iron or the like, and permanent magnets 31.
Together with 32, a magnetic circuit can be formed.

In this embodiment, the return frame 30 is composed of upper and lower walls 30a, 30b, and left and right side walls 30c, 30d.

Further, the return frame 30 has upper and lower walls 30a.

Upper and lower permanent magnets 3 each having a rectangular plate shape are installed on the inner surface of 30b.
1.32 is attached, and a magnetic field generating section M is arranged between both permanent magnets 31.32.

As shown in FIGS. 4 and 5, this magnetic field generating section M is
A non-magnetic cell 35 consisting of a long rectangular box each having a fluid inflow pipe 33 and a fluid outflow pipe 34, and a magnetic treatment tank 36 and a magnetic separation tank formed in series within the non-magnetic cell 3. 37.

The present invention essentially provides a magnetic processing channel P in the above-described processing tank 36, and also provides a magnetic separation channel P2 in communication with the magnetic processing channel P in the magnetic separation tank 37. It has particular characteristics.

In this embodiment, the magnetic separation tank 37 is composed of a plurality of compartment treatment tanks 37a to 37e to form a curved flow path.

Hereinafter, the structures of the magnetic treatment tank 36 and the magnetic separation tank 37 will be described in detail with reference to FIGS. 4 and 5.

As shown in the figure, a non-magnetic cell 3 having a long box shape
5 is partitioned into one magnetic processing tank 36 and five compartmented processing tanks 37a to 37e forming a magnetic separation tank 37 by partitions/temporary partitions 38, 39, 40, 41, and 42.

The magnetic processing tank 36 has a magnetic processing channel PI formed therein, and a fluid inlet 43 on the front surface thereof.
On the other hand, each of the compartment treatment tanks 37a to 37e forming the magnetic separation tank 37 has a magnetic separation flow path P! The partitioned treatment tank 37e located at the other end side is provided with a fluid outlet 44 on its front surface.

Furthermore, as shown in FIG. 4, partition plates 38, 39, 40
41.42, the partition plates 38, 40.42 have front ends connected to the front surface of the non-magnetic cell 35, and communication channels 45.46.42 between the rear end and the lower surface of the non-magnetic cell 35.
47 is formed. On the other hand, the rear end of the partition plate 39.41 is connected to the upper surface of the non-magnetic cell 35, and a communication channel 48.49 is formed between the upper end and the lower surface of the non-magnetic cell 35.

With this configuration, the magnetic treatment tank 36 and the magnetic separation tank 3
The all-compartment treatment tanks 37a to 37e forming part 7 are connected in series and in a bent manner via communication passages 45, 48, 46, 49.47, so that a bent treatment flow is created in the magnetic generation part M. can form a path.

Moreover, as is clear from FIG. 5, the magnetic processing channel P1 has a thin vertical interval, and its cross-sectional area is reduced to the magnetic separation channel P8 of each compartment processing tank 37a37a forming the magnetic separation tank 37. With such a configuration in which the cross-sectional area is smaller than that of , the magnetic processing channel P+ can obtain a flow velocity (for example, 0.8 m/5ec) necessary to ensure high efficiency of magnetic processing.

Next, each compartment treatment tank 37a, 37b, 37c, 37d,
The internal configuration of 37e will be explained.

As shown in FIGS. 4 and 5, a large number of ferromagnetic thin wires 50 acting as filter elements
7a, 37b, 37c, 37d, and 37e, they are arranged parallel to the flow direction of the processing fluid.

These ferromagnetic thin wires 50 are spaced at equal intervals,
They are densely arranged and parallel to each other.

Furthermore, each compartment treatment tank-37a, 37b, 37c, 37
Since the magnetic separation flow path P2 formed in the magnetic separation flow path P2 formed in the magnetic separation flow path P2 and the magnetic separation flow path P2 has a cross-sectional area larger than that of the magnetic treatment flow path P, the flow rate of the treated water can be reduced.

With this configuration, a high gradient magnetic field can be formed in each of the compartment treatment tanks 37a to 37e, and the treated water can be passed through at a low speed, so that very small particles can be adsorbed and removed.

Next, a method for treating treated water using the water treatment apparatus tA having the above configuration will be explained.

The treated water first flows into the magnetic treatment channel P1 through the fluid inlet 43, then passes through the plurality of magnetic separation channels P2 forming a bent treatment channel, and finally flows through the fluid outlet 4.
4 to the desired location.

In this way, in this embodiment, since the magnetic treatment channel P and the magnetic separation channel P2 can be formed in the same water treatment device A, the water treatment device ! While maintaining the compact structure of A, it is possible to perform magnetic treatment and magnetic separation of treated water, effectively removing not only ferromagnetic particles but also paramagnetic particles, which were previously difficult to separate and remove. be able to.

Furthermore, in this example, the cross-sectional area of the magnetic processing channel P is made different from the cross-sectional area of the magnetic separation channel P, that is, the cross-sectional area of the magnetic processing channel P is different from that of the magnetic separation channel P2. It is smaller than the cross-sectional area.

Therefore, in the magnetic processing channel p having a narrow channel cross-sectional area,
The flow rate is set to the most suitable speed for performing magnetic processing (for example, 0.
8 m/sec or more), which significantly improves the efficiency of the magnetic treatment effect.Furthermore, in the magnetic treatment channel P2, which has a large flow channel cross-sectional area, the flow velocity can be set to It is possible to significantly lower P1, and the performance of magnetic separation can be significantly improved.

Therefore, the effect of removing the ferromagnetic particles and paramagnetic particles described above can be further improved.

In the embodiments described above, permanent magnets 31 and 32 were used to form the magnetic field, but the present invention is not limited to this, and the magnetic field can also be formed using an electromagnet, a superconducting magnet, or the like.

In addition, the ferromagnetic thin wire 50 is preferably made of ferromagnetic stainless steel wire in consideration of corrosion, but is not limited to stainless steel wire at all, and may be made of other materials as long as it has ferromagnetism. It is also possible to use a line consisting of

Further, the ferromagnetic thin wires 50 may be woven into a mesh or blind shape, formed into glass wool, processed by etching or punching a thin ferromagnetic plate so that thin wire portions remain, or It is also possible to print a ferromagnetic material onto a non-magnetic thin plate.

Further, Table 1 shows the preferable characteristics and channel space factor of the ferromagnetic thin wire 50 used in the magnetic separation channel pt.

Table 1 However, the ferromagnetic thin wire 50 is not limited to a linear body such as a ferromagnetic stainless steel wire; for example, a filament shape, a band shape, or a small piece of ferromagnetic material can also be used.

Furthermore, each processing device 37a, 37b of the magnetic separation channel P2.

37c 37d, 37e The space factor of the ferromagnetic thin wires may be the same or different 0 For example, 37a, 37b, 3
7c, 37d.

The space occupancy factor may be increased in the order of 37e, so that 37a captures particles with a large particle size, and 37e captures magnetic fine particles with a small particle size.Also, each treatment tank 37a.

The flow path cross-sectional areas of 37b, 37c, 37d, and 37e may be the same or may be changed. For example, 37a, 37b, 37
The cross-sectional area is increased in the order of c, 37d, and 37e, and 37a captures particles with a large particle size, and 37e captures magnetic fine particles with a small particle size.

Further, FIG. 6 shows an example of a preferable dimensional relationship of the water treatment apparatus A described above.

That is, in FIG. 6, the return frame 30 has a height a""1201111. Width b-300mm, depth C=20011I11, thickness d-20-1. In addition, permanent magnet 31.32 (material Nd-Fe-B system, residual magnetic flux density Br = 12,000 (G), coercive force Hc = 11.
000 (Oe) Energy product (B ・H) wax-35
(MGOe) ) is the width of the magnetic processing channel P1 and the magnetic separation channel P2, respectively, e = 2011! l, f = 20
011111, and the gap between the magnetic processing channel P1 and the magnetic separation channel P2 is g = 10 mm, h −
It is set to 30+ui.

In addition, the magnetic field strength in the gap between the magnetic processing channel P1 and the magnetic separation channel P2 is 8,500 (G) and 5.500 (G), respectively.
is formed.

Then, the magnetic field generating part M and the ferromagnetic thin wire 5 having the above-mentioned dimensions are provided.
Water treatment equipment A equipped with 0 was actually installed in a building and experiments were conducted to examine changes in water quality (total iron concentration) and scale clogging rate in building water supply pipes.The results are shown in Table 2.

As is clear from Table 2, by installing the water treatment device A according to the present invention, both the total iron concentration and the scale clogging rate of building water pipes were significantly reduced, and the ferromagnetic fine particles In addition, it has been shown that paramagnetic fine particles, which have conventionally been difficult to separate and remove, can also be effectively removed.

In the above embodiment, the magnetic generation section M first provided the magnetic processing channel P1 and then provided the magnetic separation channel P2, but in the present invention, the magnetic separation channel P2 was first provided. This also includes a configuration in which a magnetic processing channel p is provided after that.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the installation state when the water treatment device according to the present invention is installed in a building, Fig. 2 is a perspective view showing the overall structure of the water treatment device, and Fig. 3 is a conceptual cross-sectional side view of the water treatment device. 4 is a sectional plan view of the same, FIG. 5 is a sectional view taken along the line 1-1 in FIG. 4, and FIG. 6 is an explanatory diagram of the dimensional relationship of the magnetic field generating section. In the figure, A2 water treatment device PI: Magnetic treatment channel P□: Magnetic separation channel 30: Return frame 31: Permanent magnet 32: Permanent magnet 50: Ferromagnetic thin wire

Claims (1)

[Claims] 1. A magnetic treatment channel (P_1) in which treated water is introduced into a magnetic field generated by a permanent magnet, an electromagnet, a superconducting magnet, etc. and subjected to magnetic treatment in the device main body; Treated water is introduced into a magnetic field generated by a magnet, electromagnet, superconducting magnet, etc., and a filter element made of a large number of ferromagnetic thin wires or small ferromagnetic pieces is placed in the treated water, and a high gradient magnetic field is applied to the treated water. A water treatment device characterized by being integrally provided with a magnetic separation channel (P_2) that adsorbs and removes floating magnetic particles. 2. Magnetic processing channel (P_1) and magnetic separation channel (P_2)
2. The water treatment apparatus according to claim 1, wherein the cross-sectional shape or the cross-sectional area of the flow passages are made different from each other, and the flow rate of the treated water in both flow passages is different. 3.In the main body of the device, there are at least two magnetic field generating sections with different magnetic field strengths, such as permanent magnets, conductive stones, superconducting magnets, etc.
At least one magnetic processing channel (P_1) is provided at each location.
) and a magnetic separation channel (P_2). 4. The magnetic field generator according to claim 1, wherein each magnetic field generating section is formed from a pair of magnets of different polarities facing each other with an interval, and the gaps between the magnets of each magnetic field generating section are made different. Processing equipment. 5. The water treatment device according to claim 1, wherein the ferromagnetic thin wires constituting the filter element provided in the magnetic separation flow path (P_2) are woven into a mesh or screen shape. 6. The water treatment device according to claim 1, wherein the ferromagnetic thin wire constituting the filter element provided in the magnetic separation channel (P_2) is formed in the shape of glass wool. 7. The ferromagnetic thin wires constituting the filter element provided in the magnetic separation channel (P_2) are made of a thin ferromagnetic plate processed by etching or punching so that the thin wire portion remains, or a thin non-magnetic plate. The water treatment device according to claim 1, characterized in that it is made of a printed ferromagnetic material.