JPH1119430A - Filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter capable of obtaining always clean water filtrate without being limited by a using place. SOLUTION: In a tank filter 2 of a filter 1, a filter unit 3 having a first filter medium 35 and a second filter medium 36 is housed. The first filter medium 35 is plural piezoelectric ceramic spherical pieces and the second filter medium 36 is plural nonwoven fabric fine pieces. Sewage is caused to flow in the filter unit 3, and then suspended matter contained in the sewage is caught by the second filter medium 36. Next, while the sewage falls in a part where the first filter medium 35 is housed, the first filter medium 35 discharges electrons by the piezoelectric effect, and the electrons are combined with oxygen molecules in the sewage and furthermore, with hydrogen to form hydrogen peroxide (H2 O2 ). Hydrogen peroxide solution decomposes by oxidation organic matter in the sewage to reduce its byproduct and also performs sterilization in water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter for purifying water in a pool or a bath.

[0002]

2. Description of the Related Art Impurities that contaminate water include suspended substances such as hair and scale suspended in water, dissolved substances such as organic substances dissolved in water, and colloidal particles such as bacteria having an intermediate size. There is a form. As a filter for purifying sewage mixed with such impurities, there is a physical filtration method using sand, diatomaceous earth, a cartridge or the like as a filter material,
A biological filtration system using a biofilm as a filter medium is known. In the physical filtration method, only a part of suspended substances and colloid particles can be captured. Therefore, when it is desired to remove organic substances and dissolved substances in water, a biological filtration method is employed.

[0003]

However, in the biological filtration system, a large number of bacteria contribute to the purification of wastewater, and the effects of these species on the human body are unknown. Therefore, although there is no problem in the purification treatment of sewage and the like, there is a question of safety in reusing filtered water as water that directly touches a human body such as a pool or a bathhouse. Bacteria also produce secretions, which secrete pool and bathtub walls. Furthermore, when chlorine is put into water, bacteria contributing to purification may be killed, so that it is difficult to use chlorine in a pool that is sterilized by chlorine.

[0004] In view of the above problems, an object of the present invention is to provide a filter capable of decomposing organic substances and obtaining safe and clean filtered water not only for purification of sewage but also for a wide range of uses such as pools and baths. Is to provide.

[0005]

In order to solve the above-mentioned problems, a filter according to the present invention has a filter medium made of piezoelectric ceramic and a filter tank containing the filter medium.

In the present invention, since the filter medium is made of piezoelectric ceramics, when sewage hits the filter medium and pressure is applied to the filter medium, a voltage is generated by the piezoelectric effect and the filter medium emits electrons into the sewage. These electrons combine with oxygen molecules in the wastewater,
Further, it combines with hydrogen to generate hydrogen peroxide (H ₂ O ₂ ). Since hydrogen peroxide dissolves in water immediately, the sewage itself becomes a hydrogen peroxide solution.

[0007] Hydrogen peroxide works as an oxidizing agent for alkaline substances and as a reducing agent for stronger oxides, so it oxidizes and decomposes organic matter in water and reduces by-products generated after decomposition. . In addition, since the hydrogen peroxide solution also functions as a bactericide, bacteria in the water can be removed. Hydrogen peroxide water is chemically unstable, and is decomposed into water and oxygen before being discharged from the filtration tank and supplied to the destination.

[0008] Accordingly, clean filtered water in which both decomposition and sterilization of organic substances are performed can be obtained. For this reason, the filtered water can be used in a bathhouse or the like without using chlorine. In addition, even if water such as a pool is charged with chlorine, it does not affect the piezoelectric effect of the piezoelectric ceramic, so that the filtering performance does not decrease. Furthermore, the use of living organisms whose effects on the human body are unknown, such as bacteria, is safe, and there is no secretion of bacteria, so that the walls of pools and bathtubs do not get wet.
Therefore, it can be used with confidence anywhere, such as in pools and baths. On the other hand, the filter tank may have a simple structure in which the filter material made of piezoelectric ceramic is simply disposed in the water passage of the wastewater, so that the cost of the filter can be reduced.

Next, if the filter material is a piezoelectric ceramic spherical piece and a plurality of the filter materials are stored in the filter tank,
Even with a small volume, the contact area between the sewage and the filter medium can be increased. Therefore, it is possible to provide a filter having a high filtering performance and a reduced size.

Here, in addition to the piezoelectric ceramic filter medium, a second filter medium comprising a plurality of nonwoven fabric strips is further provided, and the second filter medium is passed through the piezoelectric ceramic filter medium along a water flow direction. If they are arranged in series, they can trap suspended matter in sewage such as hair and soil when sewage passes through the fine gaps between the nonwoven fabric strips. Since the second filter medium captures only suspended substances that cannot be removed by the piezoelectric ceramic filter medium, the filter of the present invention provides:
A clean filtered water is obtained, from which almost all substances contaminating the water have been removed.

In order to arrange the piezoelectric ceramic filter medium and the second filter medium in series along the water direction, the filter tank may have the following structure. That is, a tube in which the filtration tanks are vertically arranged, an upper partition plate of a mesh plate defining an upper end surface of the tube, a lower partition plate of a mesh plate defining a lower end surface of the tube, and the tube A mesh-like plate partitioning the inside up and down, and the second partition
And the filter material made of piezoelectric ceramic may be placed on the lower partition plate, and the side of the upper partition plate may be used as a supply port of the sewage to be filtered. The sewage is first filtered by a second filter medium to remove suspended substances, and then bacteria and organic substances that have passed through the second filter medium as they are are decomposed by the piezoelectric ceramic filter medium. As a result, clean filtered water is discharged from the lower partition plate.

In order to wash the piezoelectric ceramic filter medium and the second filter medium, the piezoelectric ceramic filter medium and the second filter medium can be lifted from the middle partition plate and the lower partition plate by a water flow, respectively. In such a state, it is preferable to be stacked on these partition plates. With this configuration, the filter medium can be diffused inside the cylinder by the bubbles or the reverse water flow, so that the suspended substance attached to the filter medium can be separated. For this reason, if an air chamber capable of ejecting bubbles is formed in the filtration tank in the filtration tank,
The filter medium can be washed empty.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a filter according to the present invention will be described with reference to the drawings.

FIG. 1 is a schematic view showing a filter of the present invention. FIG. 2 is a system diagram using the filter of the present invention.
In this example, the filter 1 is used to purify hot water in the bathtub 51 and supply the filtered water to the bathtub 51 again for reuse.

The filter 1 includes a cylindrical filtration tank 2 to which a plurality of water distribution pipes 42 are connected. The filtration tank 2 includes a cylindrical outer case 22 arranged vertically and an outer case 22.
And a filtration unit 3 for filtering sewage. A water supply port 23 connected to a bathtub 51 is formed on a side surface of the outer case 22. In addition, outer case 2
The upper end of 2 is closed by a top plate 26. Therefore, sewage flows from the bathtub 51 through the check valve 41 attached to the water pipe 42, and the inside of the outer case 22 is filled with sewage.

The filtering unit 3 has a cylindrical filter medium case 31 arranged in a vertical direction, and the inside of the filter medium case 31 can be passed up and down by dirty water. The filter medium case 31 is attached to the upper bottom portion 21 of the filtration tank 2 such that there is a space between the outer case 22 on the outer peripheral side and the upper surface side. In the bottom chamber 45 of the filtration tank 2, a discharge port 24 opened below the filter medium case 31 is formed, and a pump 43 is connected to the discharge port 24. Therefore,
When the pump 43 is operated, as shown by an arrow A, the sewage flowing from the supply port 23 passes through the inside of the filter medium case 31 from top to bottom, and is then discharged from the discharge port 24. The discharged water is heated by the heater 53 provided in the water distribution pipe 42 and returned to the bathtub 51.

FIG. 3A is a sectional view of the filtration unit 3. As shown in FIG. 3B, a mesh-shaped upper partition plate 32 defining the upper end surface of the filter medium case 31 is attached to the upper end of the filter medium case 31, and FIG.
As shown in FIG. 3, a lattice-shaped lower partition plate receiver 33 that defines the lower end surface of the filter medium case 31 is attached, and a mesh-shaped lower partition plate 37 shown in FIG. ing. In the center of the filter medium case 31, FIG.
As shown in (d), a mesh-shaped middle partition plate 34 for vertically dividing the filter medium case 31 is attached, and the inside of the filter medium case 31 is divided into a lower half 31a and an upper half 31b. Thus, the upper partition plate 32 of the filter medium case 31,
Since the lower partition plate 33 and the middle partition plate 34 are each a mesh plate, water can pass up and down inside the filter medium case 31.

A first filter medium 35 is accommodated in the lower half 31a of the filter medium case 31, and a second filter medium 36 is accommodated in the upper half 31b.
Is stored. Upper partition plate 32, lower partition plate 33,
And the roughness of the mesh or grid of the partition plate 34 is the first
And the second filter media 35, 36 are each part 31a,
31b. The upper partition plate 32 of the filter medium case 31 is a supply port of the sewage to be filtered, and the sewage flowing therefrom is used as the second filter medium 3.
6. The first filter medium 35 is purified by passing through the filter medium in this order.

The second filter medium 36 is a plurality of resin-coated nonwoven fabric strips formed of polypropylene. The second filter medium 36 is in a state where it can be lifted inside the upper half part 31b by the upward water flow. In addition, the lower half part 31a and the upper half part 31b remove the partition 34 depending on the type of filtration capacity,
The same space may be used.

When the sewage flows downward from above, the second filter medium 36 is piled up on the partitioning plate 34 and completely covers the partitioning plate 34. Since the gap between the nonwoven fabric strips is minute, suspended substances such as hair and dust floating in the sewage cannot pass through the second filter medium 36 and are trapped by the second filter medium 36. However, organic substances and bacteria dissolved in the sewage flow into the lower half 31a as they are.

The first filter medium 35 stored in the lower half 31a
Are a plurality of spherical pieces formed of a barium titanate-based ceramic. The first filter medium 35 is also in a state where it can be lifted inside the lower half portion 31a by the upward water flow.

When the sewage is flowing from above the filter medium case 31, the first filter medium 35 is stacked on the lower partition plate 33, and the sewage flows through the gap. Therefore, the sewage collides with the first filter medium 35 and the first filter medium 3
Apply pressure to 5. Barium titanate ceramics
Since piezoelectric ceramics generate a voltage when an external pressure is applied, when sewage collides, a voltage is generated and electrons are emitted into the sewage.
The electrons combine with some of the oxygen molecules (O ₂ ) in the wastewater,
Generates molecular oxygen anions (O ₂ ⁻ ).

Also, when the sewage collides with the first filter medium 35, its kinetic energy is converted into heat energy,
Some of the water molecules (H ₂ O) are ion dissociated to generate hydrogen ions (H ⁺ ) and hydroxyl ions (OH ⁻ ). Therefore,
Anion of molecular oxygen (O ₂ ^-) and hydrogen ions (H ⁺⁾
Combine to generate hydrogen peroxide (H ₂ O ₂ ). Hydrogen peroxide is easy to dissolve in water, so it immediately dissolves in sewage,
The sewage itself becomes hydrogen peroxide water. The aqueous hydrogen peroxide acts as an oxidizing agent for alkaline substances and as a reducing agent for stronger acidic substances. Accordingly, organic substances dissolved in water are oxidatively decomposed in a pool or a bath, and by-products such as nitrite nitrogen, nitrate nitrogen, phosphorus compounds, and sulfur compounds generated after the decomposition are reduced. In addition, since the hydrogen peroxide solution also functions as a bactericide, it can remove Escherichia coli, O-157, Legionella bacteria, various MRSA, and other general bacteria. Since the hydrogen peroxide solution is chemically unstable and is decomposed into water and oxygen in a short time, the hydrogen peroxide solution remains in the filtered water discharged from the filtration tank 1 and supplied to the bath 51. Never.

Therefore, suspended substances are captured by the second filter medium 36, and bacteria and organic substances that have passed through the second filter medium 36 as they are are decomposed by the first filter medium 35 made of piezoelectric ceramic. The sewage that has passed through becomes clean filtered water from which almost all pollutants have been removed.

As described above, since the second filter medium 36 captures suspended substances, it is necessary to periodically clean the filter unit 3. Therefore, as shown in FIG. 4, a cleaning air chamber 44 of the filtration unit 3 is attached below the filtration unit 3. A state in which the filtration tank 2 is filled with water,
When the three-way valve 38 is switched from the direction of filtration / D to the direction of washing / E, and the compressor (blower) 52 connected to the air chamber 44 is operated, as shown by the arrow B, the filtration tank 2
Is blown into the inside of the filter unit, and bubbles are blown up from below the filtration unit 3. First filter medium 35 and second filter medium 36
Is stored in the filter medium case 31 so as to be able to rise, so that the first filter medium 35 and the second filter medium 36 are diffused inside the filter unit 3 by the air bubbles. Therefore, the dirt on the first filter medium 35 and the suspended matter captured by the second filter medium 36 are peeled off. Thereafter, as shown by an arrow C, if the branch water of the cedar port 27 is made to flow by the pump 43 and the water is discharged from the discharge port 25, dirt such as suspended substances inside the filtration tank 2 can be discarded.

As described above, the filter 1 of the present embodiment uses the piezoelectric ceramic spherical piece as the first filter medium 35,
Since the wastewater collides with the filter medium 35, the wastewater itself can be converted into hydrogen peroxide water by the piezoelectric effect. Hydrogen peroxide water is
Since organic substances in water are oxidatively decomposed and by-products generated after the decomposition are reduced, dissolved substances in water can be removed. In addition, since the second filter medium 36 is arranged in the filter tank 2 in series with the first filter medium 35 along the water flow direction, suspension of hair, dust, and the like that cannot be decomposed by the first filter medium 35 is performed. Suspended substances can be captured by the second filter medium 34. Therefore, almost all substances contaminating the water can be removed, so that filtered water having high transparency and no unpleasant odor can be obtained.

Since the aqueous hydrogen peroxide also has a function as a bactericide, bacteria in the water can be removed. Therefore, even when used as water that directly touches the human body such as hot water in the bathtub 51, it is not necessary to use chlorine or a sterilizer. Water containing chlorine, such as a pool, does not affect the piezoelectric effect of the first filter medium 35.
Filter performance does not decrease. In addition, organisms such as bacteria whose effects on the human body are unknown are not used as the filter medium, so that they are safe. Further, since no secretion of bacteria is generated, there is no sliminess on the walls of pools and bathtubs. Therefore, filtered water that can be used anywhere, such as in a pool or a bath, can be obtained.

Further, the filter tank 2 has a simple structure in which only the first filter medium 35 and the second filter medium 36 are arranged in the water passage of the sewage. Further, since the first filter medium 35 is a spherical piece, the contact area with the wastewater can be increased even with a small volume.
Therefore, it is possible to reduce the size and cost of the filter 1 while maintaining high filtration performance.

Further, the mineral component ionized and dissolved in the water loses electric charge and becomes particulate due to the electrons emitted from the first filter medium 35, so that the heat capacity in the water can be increased and hot water with a good warmth can be provided. . Further, a material that emits far infrared rays, such as a germanium compound, is used as the first filter medium 3.
When mixed with 5, the cluster of water molecules is subdivided by far infrared rays, so that hot water excellent in skin permeability can be provided.

The first filter medium 35 is not limited to the piezoelectric type as long as it has the same operation and effect as the piezoelectric ceramic. The material of the second filter medium 36 is not limited to polypropylene.

[0031]

As described above, the filter of the present invention uses a filter material made of piezoelectric ceramic. When the sewage collides with the filter medium, electrons are released into the sewage, and the electrons combine with oxygen molecules in the sewage and further combine with hydrogen to generate hydrogen peroxide (H ₂ O ₂ ). As a result, the sewage itself becomes hydrogen peroxide water, oxidatively decomposes organic matter dissolved in the sewage,
Its by-products can be reduced. In addition, since the hydrogen peroxide solution also acts as a disinfectant, bacteria in the wastewater can be disinfected.

Therefore, according to the present invention, it is possible to realize a filter which can be used in any place such as a pool or a bath, and can obtain safe and clean filtered water. Further, since the filter tank has a simple structure in which a filter medium is simply disposed in a water passage of sewage, it is easy to reduce the size and cost.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a filter of the present invention.

FIG. 2 is a system diagram using the filter shown in FIG.

3A is a cross-sectional view showing a filtration unit of the filter shown in FIG. 1, FIG. 3B is a plan view showing an upper partition plate of the filtration unit shown in FIG. 3A, and FIG. The top view which shows the lower partition board receiver of the filtration unit shown, (d) is the top view which shows the middle partition board of the filtration unit shown to (a), (e) shows the lower partition board of the filtration unit shown to (a). It is a top view.

FIG. 4 is a schematic view showing a state where a filter medium of the filter shown in FIG. 1 is washed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filtration machine 2 Filtration tank 3 Filtration unit 21 Top bottom part of filtration tank 22 Outer case 23 Water absorption port 24 Discharge port 25 Discharge port 27 Sugi water inflow port 31 Filter material case 32 Upper partition plate 33 Lower partition plate support grid 34 Middle partition plate 35 First filter medium 36 Second filter medium 37 Lower partition plate 38 Three-way switching valve 39 Air vent pipe 41 Valve 42 Water distribution pipe 43 Pump 44 Air chamber 45 Bottom chamber 52 Compressor (blower)

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI B01D 29/38 540 35/02 J

Claims (6)

[Claims] 1. A filter comprising a piezoelectric ceramic filter medium and a filter tank containing the filter medium. 2. The filter according to claim 1, wherein the filter medium is a piezoelectric ceramic spherical piece, and a plurality of the filter mediums are accommodated in the filter tank. 3. The filter medium according to claim 1, further comprising a second filter medium formed of a plurality of nonwoven fabric strips, wherein the second filter medium is connected in series with the piezoelectric ceramic filter medium in a water flow direction. A filtering machine characterized by being arranged in a filter. 4. The filter tank according to claim 3, wherein the filtration tanks are vertically arranged cylinders, an upper partition plate of a mesh plate defining an upper end surface of the cylinder, and a mesh plate defining a lower end surface of the cylinder. A lower partition plate, and a mesh partition plate for partitioning the inside of the cylinder up and down, and the second partition plate is provided on the partition plate.
Wherein the filter material is mounted on the lower partition plate, and the filter material made of piezoelectric ceramic is mounted on the lower partition plate, and a side of the upper partition plate serves as a supply port of sewage to be filtered. 5. The piezoelectric ceramic filter medium and the second filter medium according to claim 4, wherein each of the piezoelectric ceramic filter medium and the second filter medium is lifted from the intermediate partition plate and the lower partition plate by a water flow. A filter machine characterized by being loaded on a filter. 6. The filter according to claim 5, wherein the filter tank has an air chamber capable of ejecting air bubbles into the filter tank, so that the filter medium can be washed.