JPH0947767A - Water quality improving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the device by which water is treated through adsorbing and capturing substances not contained in the device itself and also, the conditions of water such as pH, oxidation-reduction potential, electric conductivity and concn. of various ions can be adjusted. SOLUTION: This device consists of a granular water quality-improving material 2 and a water-permeable packaging container 3 for holding the material 2. The water quality-improving material 2 is obtained by employing a granular ore contg. granite and vermiculite as the raw material ore, calcining the ore and washing at least a heavier fraction of the resulting calcined material and contains silicate bacteria. The packaging container 3 is obtained by forming a water-permeable sheet material 4 into a bag-like container. This sheet material 4 consists of a fibrous aggregate such as various kinds of paper, nonwoven fabric or woven fabric.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water quality improving device, and more particularly to a water quality improving device containing a water quality improving material obtained from natural ore.

[0002]

2. Description of the Related Art As substances that suppress the generation of bacteria and algae in water and improve the water quality, active carbon, substances using barley stone, porous ceramics and the like are known. These exhibit deodorizing and bacteriostatic effects, prevent the generation of scale, and adsorb and remove pollutants, but have a purifying effect, such as the pH of treated water, oxidation-reduction potential, electrical conductivity,
There is almost no effect of adjusting various conditions such as various ion concentrations in water. Further, even if such an action is exerted, it takes a long time for the action to be exerted, and the sustainability of the action is poor.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a water quality improving device which can adjust the concentration of various ions in water by using natural ore, in addition to the purifying action.

[0004]

This and other objects are achieved by the present invention which is defined below as (1) to (13).

(1) A water quality improving material obtained by washing a granular ore containing granite as a raw ore and washing at least a heavy portion of a fired product obtained by firing the ore having water permeability. A water quality improver characterized by being stored in a packaging material.

(2) The water quality improver according to (1), wherein the raw ore contains vermiculite.

(3) First action of releasing ions to contacted water, second action of decreasing redox potential of contacted water
Of water and a water quality improving material having at least one of the third functions of increasing the conductivity and pH of contacted water are contained in a packaging material having water permeability. Ingredient

(4) The water quality improving device as described in any one of (1) to (3) above, wherein the packaging material is wholly or partially formed of an aggregate of fibers.

(5) Water passes through a water quality improving material obtained by using granular ore containing granite as a raw ore and washing at least a heavy portion of a fired product obtained by firing the ore. A water quality improver characterized by being stored in a container having a water passage portion.

(6) The water quality improver according to (5), wherein the raw ore contains vermiculite.

(7) First action of releasing ions to contacted water, second action of lowering redox potential of contacted water
And a water quality improving material having at least one of the third functions of increasing the conductivity and pH of the contacted water are housed in a container having a water passage portion through which water can pass. A characteristic water quality improvement tool.

(8) The water quality improving device according to any one of (5) to (7), wherein the water passage portion is a hole formed in the wall portion of the container.

(9) The water quality improving device according to any one of (5) to (7), wherein the water passage portion is an opening formed in an upper portion of the container.

(10) The water quality improving device according to any one of (1) to (9) above, wherein the water quality improving material is a porous material and has an average pore diameter of 0.1 to 80 μm.

(11) The water quality improving material according to any one of (1) to (10) above, which is a porous material and has a specific surface area of 0.1 to 3.0 m ² / g. Ingredient

(12) The water quality improver according to any one of the above (1) to (11), wherein the water quality improver contains a silicate bacterium.

(13) The water quality improving device as described in (12) above, wherein the content of the silicate bacteria is 1 × 10 ⁵ to 1 × 10 ¹² pieces / mg.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION The water quality improving device of the present invention will be described below in detail with reference to the preferred embodiments shown in the accompanying drawings.

FIG. 1 is a sectional view showing an embodiment of the water quality improving device of the present invention. As shown in the figure, the water quality improving tool 1A
Is a granular water quality improving material 2 housed in a packaging material 3 having water permeability. Hereinafter, these configurations will be sequentially described.

[1] Water quality improving material 2 The water quality improving material 2 is a granular ore containing granite, particularly granite as a main raw material, and at least a heavy product of a fired product obtained by firing the raw ore. It is obtained by cleaning the portion.

As the raw ore, one containing granular granite (particularly weathered granite), preferably one mainly containing such granite is used. Further, it is preferable that the raw ore further contains a predetermined amount of vermiculite. The content of vermiculite in the raw ore is not particularly limited, but is preferably 5 to 5
It is about 0% by weight, more preferably about 10 to 30% by weight. By including such a vermiculite, the stability of the effect of the present invention to be described later is enhanced, and the types of ions to be released become rich. The raw ore preferably contains silicate bacteria.

The raw ore as described above is subjected to calcination (first step). The firing conditions are preferably a temperature of 680 to 680.
At about 1220 ° C, about 1 to 8 minutes, more preferably 800
˜1100 ° C. for about 1.5 to 5 minutes, more preferably 880 to 1050 ° C. for about 2 to 3.5 minutes. If the firing temperature is less than 680 ° C or the firing time is less than 1 minute,
If the firing temperature is more than 1220 ° C. or the firing time is more than 8 minutes, the fired product becomes brittle.

Such firing is usually performed in air, but the firing atmosphere may be performed in a gas containing an inert gas such as nitrogen gas or argon gas, or in an oxygen-rich gas.

The cooling method after firing is not particularly limited, and natural air cooling may be used. The cooling rate is not particularly limited, but is preferably about 1 to 50 ° C / min, and more preferably about 3 to 10 ° C / min. Within such a range, cracks and the like do not occur during cooling, and residual stress is also removed and reduced, so that uniformity and stability of the shape are improved. The average pore diameter and the specific surface area of the water quality improving material 2 described later can be appropriately adjusted by setting the above firing conditions in firing.

When the raw ore contains silicate bacteria, most of them are destroyed by the calcination, but under the calcination conditions, a part of the silicate bacteria survives. Silicate bacteria have a strong reproductive ability, and the inside of the water quality improving material 2 is an environment rich in water, nutrients, etc. for reproduction, so even if the number of surviving bacteria immediately after firing is small. ,
In the finally obtained water quality improving material, silicate bacteria having the numbers of bacteria described below are present.

The fired product obtained by the above firing includes a heavy portion and a light portion (mainly vermiculite), and at least the heavy portion is washed before use ( Second step).

In this case, a method of cleaning the entire burned material (including the heavy portion and the light portion), the fired material is separated into a heavy portion and a light portion, and the main portion is the heavy portion. Although any method of performing cleaning may be used, the latter method is preferable from the viewpoint of improving cleaning efficiency and improving the quality of the obtained water quality improving material.

The washing method is not particularly limited, but washing with water is preferable. In this case, the type of washing water used is not particularly limited, and may be, for example, tap water, industrial water, river water, lake water, groundwater, or the like, or may be one to which an additive has been added for any purpose. Also, wash water
The pH is not particularly limited, but it is about pH = 5 to 9, especially pH =
It is preferably about 6.5 to 7.5.

The degree of cleaning is preferably such that the mass of the substance after cleaning is 26 to 85% of the mass of the substance before cleaning, and particularly the heavy portion in the baked product is cleaned. When applied, it is preferable that the mass of the substance after cleaning is 40 to 72% of the mass of the substance before cleaning. If the mass ratio after cleaning is too small, it will be excessively cleaned, and when the obtained water quality improving material is used, the amount of various ions released will decrease, and if the mass ratio after cleaning is too small, insufficient cleaning will result in fine particles. The particles remain, the dispersion of the particle size of the obtained water quality improving material increases, and the clogging in the pores is not sufficiently removed, so that the effective surface area decreases.

After the washing as described above, the water quality improving material 2 is obtained by drying if necessary. The drying method is not particularly limited, and in addition to natural drying, drying by blowing cold air or warm air, or heat drying using an oven or the like may be performed.

The water quality improving material 2 thus obtained is
It is made of porous material. The average pore diameter of this porous material is not particularly limited, but is preferably 0.1-8.
The thickness is about 0 μm, more preferably about 1 to 30 μm. By setting the average pore diameter in such a range, it is possible to continuously exhibit a particularly excellent substance adsorption and trapping action.

The specific surface area of the water quality improving material 2 made of a porous material is not particularly limited, but is preferably 0.1 to 3.0 m ^2.
/ g, more preferably about 0.3 to 1.0 m ² / g. By setting the specific surface area in such a range, it is possible to continuously exhibit particularly excellent adsorption-capturing action and ion releasing action of the substance.

The water quality improving material 2 preferably contains silicate bacteria. In this case, the content of silicate bacteria (bacteria count) is preferably from 1 × 10 ⁵ ~1 × 10 ¹² cells ^{/ mg, 1 × 10 6 ~1} × 10 12 pieces /
The amount is more preferably mg, and further preferably 5 × 10 ⁸ to 1 × 10 ¹² pieces / mg. With such a content, the effects described below are exhibited particularly effectively.

The water quality improving material 2 is usually in the form of particles. The particle size is not particularly limited, but the average particle size is preferably about 1 to 12 mm, more preferably 2 to 8 mm.
It is about mm. The particle size may have some degree of variation.

Incidentally, the granular water quality improving material is further pulverized into a powder form, or the granular substance or powder is combined to form, for example, any of granular form, plate form, rod form (linear form), tubular form, block form and the like. It can also be used by molding into the shape of.

When the water quality improving material 2 is brought into contact with raw water (water to be treated), the water quality improving material 2 adsorbs substances that it does not have (for example, sodium hypochlorite in tap water, proteins causing scales, etc.). , An action of appropriately capturing at least one of various ions such as aluminum ion, calcium ion, potassium ion, magnesium ion, sodium ion, iron ion, silicon ion, sulfate ion, and chlorine ion as well as capturing Have. Furthermore, it has the effect of lowering the redox of raw water, raising the pH and raising the electrical conductivity. Such an effect is instantaneous with little temperature dependence of the raw water and is excellent in its sustainability.

When the water quality improving material 2 contains silicate bacteria, the silicate bacteria have an action of decomposing substances adsorbed and captured. As a result, when water treatment is stopped, the ability of adsorbing and trapping substances not present in the water is restored, and the above-described action (performance) can be maintained for a long period of time. The presence of silicate bacteria also contributes to reducing the redox of raw water.

The water quality improving material 2 in the present invention has the advantage that the treated water does not become turbid because the fine powder is not viscous like ordinary ores, and is suitable as drinking water, for example. There is.

Further, the water quality improving material 2 in the present invention is
Since a small amount of α-rays and far infrared rays are emitted, it has the effect of reducing the molecular population of water. The water quality improving material 2 in the present invention is not limited to the one having the above-mentioned configuration,
The action of releasing ions to the contacted water (first action), the action of lowering the redox potential of the contacted water (second action), and the action of increasing the conductivity or pH of the contacted water (third action). Of at least one of the actions (preferably having the first action, more preferably having the first and second actions, and further preferably all of the first to third actions) If you have)
It can be anything.

For example, all or part of the water quality improving material having the above-mentioned structure is produced by using a crushed product obtained by crushing at least a heavy part of a fired product of a granular ore (ore) containing granite. It may be replaced with a water quality improving material formed by granulation (preferably, a water quality improving material formed by firing a semi-solid granular molded product obtained by kneading the pulverized product, water and a binder).

[2] Packaging Material 3 The packaging material 3 for accommodating the water quality improving material 2 as described above is wholly or partly composed of the sheet material 4 having water permeability. In the present embodiment, the sheet material 4 constitutes the bag-shaped packaging material 3.

The sheet material 4 may be any material as long as it has water permeability, but a material composed of an aggregate of fibers is preferable. The aggregate of fibers is a non-woven fabric,
Examples include woven and knitted fabrics, various types of papers, various types of filter media, aggregates of short fibers, and any combination thereof. Among them, various types of papers, non-woven fabrics, and woven and knitted fabrics are preferable.

The woven or knitted fabric includes a woven fabric, a knitted fabric or the like (for example, mesh or net). As the woven fabric, all kinds of fabrics that have been put to practical use,
For example, plain weave, twill weave, and satin weave can be used. The knit structure is not particularly limited, and examples thereof include weft knitting (flat knitting), warp knitting (tricot knitting), circular knitting, flat knitting, and knitting.

The fibers that can be used may be either natural fibers or synthetic fibers, and may also be a combination of two or more of these (mixing, blending, or multi-layer laminates) as appropriate.

Examples of the natural fibers include various protein fibers, cellulose fibers or mineral fibers, and examples thereof include tree fibers (pulp), cotton, flax, cannabis, silk, wool, cavok, ramie, linter, and asbestos. .

As synthetic fibers, polyamide type, polyester type, polyurethane type, polyurea type, polyolefin type, polystyrene type, polyvinyl chloride type, polyvinylidene chloride type, polyfluorinated ethylene type, polyacrylonitrile type, polyvinyl alcohol type, Any material such as polyvinylidene cyanide can be used, and specific examples include nylon, rayon, tetron, teflon,
Vinylon and the like.

The sheet material 4 made of an aggregate of fibers has porosity itself and allows water to pass through the porosity. The pore diameter of the porosity is the particle diameter of the water quality improving material 2 to be housed, particularly the minimum. It is preferably smaller than the particle size. This prevents the water quality improving material 2 from coming off the packaging material 3.

The sheet material 4 constituting the wrapping material 3 is not limited to one having water permeability by itself, and the wrapping material 3 is a sheet material 4 made of a material having no water permeability. It may be configured by forming a small hole (not shown) to the extent that the improvement material 2 does not pass through.

For the sheet material 4 as described above, for example, two quadrangular sheet materials 4 are superposed, and the vicinity of the outer edges of the four sides thereof is bonded,
Joining by fusion, sewing, etc., square sheet material 4
Bending into two and joining the outer edges of the three sides other than the bent portion by the same method as described above, or joining (sealing) the openings at both ends of the tubular sheet material 4 by the same method as described above. Is formed into a bag shape to form a packaging material 3.

The packaging material 3 is sealed so that the water quality improving material 2 cannot be taken out, a part of the packaging material 3 is opened so that the water quality improving material 2 can be taken in and out, a part of the packaging material 3 An opening is formed in which the water quality improving material 2 can be taken in and out, and the opening can be opened and closed. Further, the water quality improving material 2 may be doubled or tripled or more wrapped with the same or different types, materials, sizes and the like of the packaging material 3.

FIG. 2 is a partially cutaway perspective view showing another embodiment of the water quality improving device of the present invention. A water quality improver 1B shown in the same figure comprises a water quality improver 2 similar to the above, housed in a container 5 having a water passage.

The container 5 is composed of a bottomed cylindrical container body 51 and a lid 52 for sealing the upper opening of the container body 51. The water quality improving material 2 is put inside the container body 51 to a predetermined level.

On the side wall 53 of the container body 51, a plurality of water passage holes 6 forming a water passage portion are formed so as to penetrate the side wall 53 of the container body 51. It is preferable that the diameter of the water passage hole 6 is smaller than the particle diameter of the water quality improving material 2 to be stored, especially the minimum particle diameter. This prevents the water quality improving material 2 from coming off the container 5. The water passage hole 6 may be formed in the bottom of the container body 51 or the lid 52.

The lid 52 is fitted or screwed onto the upper portion of the container body 51 to seal the upper opening of the container body 51. In this case, the lid body 52 may be detachable or fixed to the container body 51.

The container body 51 and the lid 52 are made of a material having a predetermined rigidity, for example, polyolefin such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polyester such as polyethylene terephthalate, polybutylene terephthalate, polyvinyl chloride, Examples include various synthetic resins such as polycarbonate, ABS resin, acrylic resin and polyamide, various metals such as stainless steel, aluminum and titanium, and various ceramics such as glass and alumina. The container 5 may be transparent or opaque, but is preferably transparent or translucent from the viewpoint of ensuring internal visibility.

FIG. 3 is a sectional view showing another embodiment of the water quality improving device of the present invention. A water quality improving tool 1C shown in the figure is configured by accommodating the water quality improving material 2 similar to the above in a container 7 having a water passage portion.

The container 7 is composed of a tray (box) having a bottom, and an upper opening 71 thereof constitutes a water passage portion.
The water quality improving material 2 is put inside the container 7 to a predetermined level.

Examples of the constituent material of the container 7 are the same as those exemplified for the container body 51. In addition,
In such a water quality improving tool 1C, the water passage hole 6 described above may be formed in the side portion or the bottom portion of the container 7. Also,
The upper opening 71 may be covered with the sheet material 4 described above.

[0059]

EXAMPLES Next, specific examples of the water quality improving device of the present invention will be described.

(Example 1) 1. Manufacture of water quality improvement materials Ore produced in Ono Town, Fukushima Prefecture (so-called “Ono Ore”)
Used as a raw ore. This ore is mainly composed of weathered granite and contains about 20% by weight of vermiculite. The raw ore contained silicate bacteria.

Next, the raw ore was burned in air at a temperature of 990 ° C. for about 3 minutes using a furnace, and then cooled at a rate of 4 ° C. /
Air cooled in minutes. While stirring the obtained fired product, a high-speed air stream was blown onto it to blow off the light portion, and the remaining heavy portion was recovered.

Next, 20 kg of heavy portion of the recovered burned material
Was washed with tap water (pH = 7.1). The weight of the substance (washed product) after washing was 10.7 Kg. The washed product was naturally dried to obtain a granular water quality improving material having an average particle size of about 4.5 mm. The average pore diameter of this water quality improving material is about 2.5.
μm, the specific surface area was about 0.4 m ² / g. The number of silicate bacteria contained in the water quality improving material (when stable) was analyzed and found to be about 1 × 10 ¹⁰ cells / mg.

2. Filling the packaging material A sheet material formed by joining a paper material and a polypropylene mesh into a bag shape is filled with 0.1 Kg of the water quality improving material in the packaging material, and the opening is sealed. The water quality improving tool of the present invention.

[Experiment 1] A column having a water inlet and a water outlet was filled with 75 water quality improving tools of Example 1, and tap water (raw water) was supplied from the water inlet to improve the water quality in the column. After coming into contact with the material, the material was discharged from the outlet. The amount of tap water supplied was 5 liters per minute.

When 30 minutes have passed from the start of water flow to the column, tap water (raw water) before passing through the column and water (treated water) flowing out from the column were sampled, and each was sampled by Kyoritsu Riken Laboratories. Water quality analysis was performed using an analyzer. The results are shown in Table 1 below.

[0066]

[Table 1]

As shown in Table 1 above, it was confirmed that various mineral components (ions) were eluted from the water quality improving device of Example 1 and applied to the treated water.

[Experiment 2] 75 water quality improving devices of Example 1 were packed in the same column as above, and tap water (raw water) was passed through this column at 1000 ml / min for 8 hours a day in the same manner. , This was repeated every day.

From the start of water flow to the column, 2 days, 30 days, 6
At 0, 90, and 120 days, water (treated water) flowing out of the column was sampled, and its oxidation-reduction potential, conductivity, and pH value were measured.
The results are shown in Table 2 below.

[0070]

[Table 2]

As shown in Table 2, when the water quality improving device of Example 1 was used, the water quality was improved so that the oxidation-reduction potential of the raw water was lowered and the conductivity and pH were increased, and the effect It was confirmed that it is also excellent in sustainability.

[Experiment 3] In Experiment 2 described above, an experiment was carried out for further detailed investigation of the cause of the continued effect of improving the water quality.

A predetermined amount of tap water (raw water) was passed through a small column filled with 20 water quality improving devices of Example 1 (first pass), and after stopping the passage of water for 33 days, the same procedure was performed. The water flow was repeatedly restarted / stopped under the conditions shown in Table 3 below.

Tap water (raw water) before passing through the column and water (treated water) flowing out from the column were sampled for each predetermined amount of water passed, and the residual chlorine concentration (next The concentration of sodium chlorite) was measured. The results are shown in Table 3 below.

[0075]

[Table 3]

As shown in Table 3, in the water quality improving device of Example 1, sodium hypochlorite was increased with an increase in the cumulative amount of water passing during each of the first through fourth water passages. Adsorption of
Although the capture ability decreases, sodium hypochlorite is adsorbed when water flow is restarted after water flow has been stopped for a certain number of days (when the second, third, and fourth water flow starts). It was confirmed that the capture ability was restored. This is because the silicate bacteria existing in the water quality improving material decompose the adsorbed and captured substances such as sodium hypochlorite during the suspension of water flow, and the decomposed products are released into the treated water. Is estimated to be

From the above, the water quality improving tool of the present invention can provide the above-mentioned water quality improving effect for a long period of time.

(Example 2) The same water quality improving agent as in Example 1 (0.5 kg) was filled in a container (structure shown in FIG. 2) composed of a transparent polyethylene terephthalate container body and a lid, and then the container body. The upper opening of the above was shielded with a lid and adhered and fixed to obtain a water quality improving tool of the present invention. In addition, a large number of water holes having a diameter of about 1 mm are formed on the side and bottom of the container body.

[Experiment 4] Fifteen water quality improving materials of Example 2 were submerged at the bottom of a tank storing 100 liters of tap water (raw water), and after 10 hours, the water in the tank was sampled. When water quality analysis was performed using the same analyzer, the same results as those shown in Table 1 above were obtained.

[Experiment 5] Fifteen water quality improving devices of Example 2 were placed in the middle of a tap water flow path, and tap water (raw water) was flowed through this flow path at 500 ml per minute for 8 hours a day, and this was daily. I went repeatedly.

From the start of water flow to the flow path, 2 days, 30 days, 60
Day, 90 days and 120 days later, respectively,
Sampling the water (treated water) downstream of the water quality improver,
When the redox potential, conductivity and pH value were measured, the same results as those shown in Table 2 were obtained.

[Experiment 6] Six water quality improving tools of Example 2 were placed in the middle of the tap water passage, and a predetermined amount of tap water (raw water) was passed through the passage (first water passage). After stopping water flow for 33 days, restart water flow under the conditions shown in Table 3 in the same manner.
The stop was repeated.

The tap water (raw water) on the upstream side and the water (treated water) on the downstream side of the water quality improving device were sampled for each predetermined water flow rate, and the residual chlorine concentration was analyzed using the same analyzer as above. When the (concentration of sodium hypochlorite) was measured, the same results as those shown in Table 3 above were obtained.

(Example 3) The same water quality improving agent as in Example 1 (1.5 kg) was put in a glass tray having a diameter of 22 cm and a depth of 7 cm (structure shown in FIG. 3) to obtain a water quality improving device of the present invention. . Experiments similar to Experiments 4 and 5 were performed using each of the five water quality improving tools, and similar results were obtained. Further, when an experiment similar to the experiment 6 was conducted using the two water quality improving tools, similar results were obtained.

The use of the water quality improver of the present invention is not particularly limited, and it can be used, for example, to improve the water quality of tap water (drinking water), industrial water, agricultural water, and, for example, a water storage tank, bathtub, It can be installed inside ponds, water tanks, fish farms, septic tanks, water supply and sewer systems, or in water supply pipes or water circulation systems.

[0086]

As described above, in the water quality improving device of the present invention, the water quality improving material adsorbs and captures a substance which is not in itself to purify the water, and at the same time, the pH, the redox potential, the electric conductivity of the water. , Various ion concentrations and other conditions can be adjusted. Moreover, the rate of development of such a water quality improving effect is relatively fast, and its durability is excellent.

In particular, the average pore diameter of the water quality improving material is 0.1 to 10.
80μm or specific surface area 0.1-3.0m ² / g
In the case of, the above effect becomes more remarkable. In addition, when the water quality improving material contains silicate bacteria, particularly when the content (the number of bacteria) is 1 × 10 ⁵ to 1 × 10 ¹² cells / mg, it can Since it has a resilience such as adsorption and trapping ability, an excellent water quality improving effect can be obtained for a long period of time.

Further, since the water quality improving device of the present invention contains the water quality improving material in a packaging material or a container, for example,
Excellent handling when exchanging, transporting and storing. Further, by storing a certain amount of the water quality improving material, the usage amount (appropriate usage amount) of the water quality improving material can be easily and accurately grasped by the number of packaging materials and containers.

The conditions regarding the water quality improving material such as the type, composition, and filling amount of the water quality improving material, the size of the packaging material, the constituent materials, the degree of water passage, the volume of the container, the shape, and the structure of the water passage portion ( By selecting various conditions such as pore shape, opening area, etc., the degree of expression of the above-mentioned water quality improving effect (slow effect, immediate effect, magnitude of effect persistence, etc.) can be adjusted appropriately.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a water quality improving device of the present invention.

FIG. 2 is a partially cutaway perspective view showing another embodiment of the water quality improving device of the present invention.

FIG. 3 is a cross-sectional view showing another embodiment of the water quality improving device of the present invention.

[Explanation of symbols]

 1A, 1B, 1C Water quality improver 2 Water quality improver 3 Packaging material 4 Sheet material 5 Container 51 Container body 52 Lid 53 Side wall 6 Water passage hole 7 Container 71 Upper opening

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication C02F 1/00 C02F 1/00 K

Claims (13)

[Claims] 1. A water quality improving material obtained by using granular ore containing granite as a raw ore, and washing at least a heavy portion of a fired product obtained by firing the ore as a water-permeable material. A water quality improver characterized by being stored in wood. 2. The water quality improver according to claim 1, wherein the raw ore contains vermiculite. 3. Among the first action of releasing ions into contacted water, the second action of lowering the redox potential of contacted water, and the third action of increasing the conductivity and pH of contacted water. 1. A water quality improving device, characterized in that the water quality improving material having at least one of the actions described above is housed in a packaging material having water permeability. 4. The water quality improving device according to claim 1, wherein the packaging material is wholly or partially formed of an aggregate of fibers. 5. Water can pass through a water quality improving material obtained by using granular ore containing granite as a raw ore and washing at least a heavy portion of a fired product obtained by firing the ore. A water quality improving tool characterized by being stored in a container having a water passage. 6. The water quality improver according to claim 5, wherein the raw ore contains vermiculite. 7. Among the first action of releasing ions to the contacted water, the second action of lowering the redox potential of the contacted water, and the third action of increasing the conductivity and pH of the contacted water. A water quality improving device characterized by comprising a water quality improving material having at least one of the actions described above in a container having a water passage portion through which water can pass. 8. The water quality improving device according to claim 5, wherein the water passage portion is a hole formed in a wall portion of the container. 9. The water quality improving device according to claim 5, wherein the water passage portion is an opening formed in an upper portion of the container. 10. The water quality improving material is a porous material,
The water quality improving device according to any one of claims 1 to 9, wherein the average pore diameter is 0.1 to 80 µm. 11. The water quality improving material is a porous material,
11. The water quality improving device according to claim 1, which has a specific surface area of 0.1 to 3.0 m ² / g. 12. The water quality improver according to claim 1, wherein the water quality improver contains a silicate bacterium. 13. The content of said silicate bacteria is
The water quality improving device according to claim 12, wherein the water quality improving device is 1 × 10 ⁵ to 1 × 10 ¹² pieces / mg.