JPH07204635A - Water purifier - Google Patents

Abstract

PURPOSE:To remove microbes by installing a ceramic filter and a bacteria- removing filter and further installing a check valve in the outlet side of the bacterial removing filter, wherein the ceramic filter consists of activated ceramic which is treated by bringing it into contact with air led through an aqueous solution. CONSTITUTION:Tap water whose quality is improved by a ceramic filter 8 consisting of activated ceramic is introduced into a bacteria removing filter 9, wherein the activated ceramic is treated by bringing it into contact with air led through an aqueous solution. The bacteria-removing filter 9 is composed by laminating hollow fiber membranes 9A and forming a leading inlet 9B in the lower part of the outer circumference of the bacteria removing filter 9, and moreover a check valve 12 and a magnet 13 are set in the outlet side of the bacteria removing filter 9, that is in the inside of a water suppling pipe 11. Consequently, even if tap water is polluted with microbes proparaged in the inside of a cartridge 4 due to no use for a long duration, the microbes are removed by fine filtration by the hollow fiber membranes 9A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifier for filtering and sterilizing water.

[0002]

2. Description of the Related Art Conventionally, as a water purifier, an active carbon layer, a coral sand layer, etc. have been used to filter solids and to adsorb organic substances and chlorine.

[0003]

However, the above-mentioned conventional water purifier has a problem that microorganisms propagate therein when the water purifier is not used for a long period of time. Further, the conventional water purifier cannot remove the solid matter, chlorine, organic matter, etc., but cannot activate or modify the water itself.

[0004]

The present invention provides a water purifier (1) comprising a ceramic filter layer (8) and a sterilization filter (9) as a means for solving the above conventional problems. is there. As the ceramic filtration layer (8), ferric chloride was dissolved in a large amount of caustic soda aqueous solution, neutralized with hydrochloric acid, and concentrated to obtain crystals and / or ferrous sulfate dissolved in a large amount of hydrochloric acid aqueous solution. It is desirable to use an activated ceramic that has been subjected to immersion treatment in an aqueous solution of crystals obtained by post-concentration and / or contact treatment with air passing through the aqueous solution, and further to the outlet side of the sterilization filter (9). Check valve
It is desirable to install (12).

[0005]

[Action] Water passes through the ceramic filter tank (8) to remove solids, organic substances, chlorine, etc., but at the same time, the far infrared ray action of the ceramic filter layer subdivides and modifies water clusters. . Even when microorganisms propagate in the ceramic filtration tank (8) during a long period of nonuse and the water is contaminated with the microorganisms, the microorganisms are removed by the sterilization filter.

It is considered that when ferric chloride is dissolved in a large amount of caustic soda aqueous solution, the iron constituting ferric chloride is activated. When the aqueous solution containing activated iron is neutralized with hydrochloric acid, activated iron chloride is obtained as crystals. Also, when ferrous sulfate is dissolved in a large amount of hydrochloric acid aqueous solution,
It seems that the iron that constitutes ferrous sulfate is activated.
When the aqueous solution containing activated iron is concentrated, activated iron chloride is obtained as crystals. The crystals obtained by both of the above methods are preferably further isopropanol-
It is purified by dissolving in a water mixture and concentrating and recrystallizing. Therefore, when the ceramic is immersed in such an activated iron chloride aqueous solution, or when the air passing through the aqueous solution is brought into contact with the ceramic, the above effect of the ceramic is amplified.

Ceramics used in the present invention include:
For example, there are known ceramics such as silicon oxide, aluminum oxide, zirconium oxide, titanium oxide, silicon nitride, boron nitride, and silicon carbide, and these may be mixed in two or more kinds. Further, a check valve is provided above the sterilization filter (9).
By installing (12), even if not used for a long period of time, it is possible to effectively prevent invasion of germs from the outlet side and breed at the sterilization filter (9) outlet side, and the water purifier (1) It is kept hygienic.

[0008]

【Example】

[Embodiment 1] FIG. 1 shows a water purifier (1) of this embodiment. The water purifier (1) of this embodiment comprises a base (2), an outer container (3) that is removably installed on the base (2), and a removable container that is stored in the outer container (3). Possible Processing Material Cartridge (4)
A water inlet (10) is opened at the bottom of the base (2), an inlet (4A) is provided on the upper surface of the cartridge (4), and the inside of the cartridge (4) is opened. The water pipe (11) penetrates,
The end of the water passage pipe (11) is extended to the outside of the outer container (3). The outer container (3) is provided with a screw groove (3A) at the lower inner periphery thereof, and a packing (3B) is attached to the upper part of the screw groove (3A). A screw groove (2A) is provided on the upper periphery of the base (2), and the screw groove (3A) of the outer container (3) is connected to the screw groove (2A) of the base (2).
The outer container (3) is screwed onto the base (2) by being screwed into (A).
The cartridge (4) is detachably installed on the upper side, and the cartridge (4) is exchanged with the outer container (3) removed from the base (2).

The treatment material cartridge (4) comprises a coconut husk activated carbon layer (5) filled with coconut husk activated carbon, a coral sand layer (6) filled with coral sand, and a basic triphosphorus pentacalcium filled basic Triphosphorus pentacalcium layer (7), ceramic filtration layer (8) and water pipe (11)
It consists of a sterilization filter (9) to be contacted. A hollow fiber membrane (9A) having a pore size of 0.4 μm is laminated inside the sterilization filter (9), an inlet (9B) is provided at the lower outer periphery of the sterilization filter (9), and a water pipe is further provided. A check valve (12) and a magnet (13) are housed in (11).

In this example, the ceramic was aluminum oxide / silicon oxide mixed in a 1: 1 weight ratio and was activated as follows. 1 g of ferric chloride anhydrous was put into 5 ml of 12N caustic soda aqueous solution, dissolved by stirring, and left at room temperature for 5 hours or more. The aqueous solution is neutralized to a pH of about 7 with a 12N hydrochloric acid aqueous solution, the neutralized solution is filtered through filter paper (No. 5C) and then concentrated under reduced pressure to precipitate crystals. The crystals were collected, dried under reduced pressure in a desiccator, dissolved in 10 ml of a mixed solvent of 80:20 by weight of isopropanol-water, filtered through a filter paper (No. 5C), and concentrated under reduced pressure to remove the solvent. Remove and dry. The above-mentioned extraction-concentration-drying operation is repeated several times,
Purified activated iron chloride crystals are obtained. The crystals are dissolved in distilled water to make a 2 ppm aqueous solution. Polyvinyl alcohol and water are added to a 1: 1 weight ratio mixed powder of silicon oxide and aluminum oxide, and the mixture is kneaded, and the kneaded product is molded into a desired shape, followed by firing at 1000 ° C. for 3 hours to produce a ceramic. . The ceramic is immersed in the aqueous solution, left standing for 2 hours, then collected and dried at 100 ° C. for 2 hours to obtain an activated ceramic.

In the water purifier (1) having the above structure, the water supply port (10)
When more tap water is introduced, the tap water moves in the direction of the arrow in Fig. 1 and is introduced into the cartridge (4) from the inlet (4A) on the upper surface of the cartridge (4) and first passes through the coconut husk activated carbon layer (5). Then, the solid matter of the tap water, odor, bad taste, residual chlorine,
Organic substances and the like are removed by adsorption by filtration. The tap water treated in this way passes through the coral sand layer (6) to adsorb and remove the remaining organic substances and the like, and is supplied with natural minerals and adjusted in pH. Then, the tap water passes through the basic triphosphorus pentacalcium layer (7) to adsorb and remove the remaining organic substances, and is supplied with calcium ions to be changed into alkaline water that is good for the body, and further natural water. Supplied with minerals. The tap water reaches the ceramic filtration layer (8) activated by ferric chloride, and the ceramic filtration layer (8) further filters impurities and subdivides and reforms water clusters. . The tap water modified by the activated ceramic filtration layer (8) is introduced into the sterilization filter (9), and the tap water is contaminated by the microorganisms that have propagated inside the cartridge (4) due to long-term non-use. In this case, the microorganisms are removed by fine filtration through the hollow fiber membrane (9A). The tap water filtered and sterilized by the cartridge (4) is passed through the water pipe (1
It is magnetized by the magnet (13) introduced in (1) and
Emitted from 4). When water containing microorganisms flows backward from the water passage pipe (11) to the outlet side of the sterilization filter (9) when the water purifier (1) is not used, the water passage pipe (1)
The check valve (12) in 1) prevents the water from reaching the outlet side of the sterilization filter (9).

[Embodiment 2] The water purifier (1) of this embodiment has the same structure as that of Embodiment 1 except that the following activated ceramic is used as the ceramic used in the ceramic filtration tank (8) of Embodiment 1. And Aluminum oxide is housed in a processing container as a ceramic, and the aqueous solution prepared in the same manner as in Example 1 is passed through the processing container at a flow rate of 5 l / min for 3 hours to obtain an activated ceramic.

[Embodiment 3] The water purifier (1) of this embodiment has the same construction as that of Embodiment 1 except that the following activated ceramic is used as the ceramic used in the ceramic filtration tank (8) of Embodiment 1. And In this example, silica was used as the ceramic and was activated as follows.
1 g of ferrous sulfate was put into 5 ml of 12N hydrochloric acid aqueous solution to dissolve with stirring, and the solution was filtered through filter paper (No. 5C) and then concentrated under reduced pressure to precipitate crystals. The crystals were collected, dried under reduced pressure in a desiccator, dissolved in 10 ml of a mixed solvent of 80:20 by weight of isopropanol-water, filtered through a filter paper (No. 5C), and concentrated under reduced pressure to remove the solvent. Remove and dry. The above extraction-concentration-drying operation is repeated several times to obtain purified activated iron chloride crystals. The crystals are dissolved in distilled water to make a 2 ppm aqueous solution. The ceramic is dipped in the aqueous solution, left standing for 2 hours, then recovered and dried at 100 ° C. for 2 hours to obtain an activated ceramic.

[Embodiment 4] The water purifier (1) of this embodiment has the same construction as that of Embodiment 1 except that the following activated ceramic is used as the ceramic used in the ceramic filtration tank (8) of Embodiment 1. And As a ceramic, zirconium oxide is housed in a processing container, and air containing an aqueous solution prepared in the same manner as in Example 3 is passed through the processing container at a flow rate of 5 l / min for 3 hours to obtain an activated ceramic.

Other than this embodiment, untreated, non-activated ceramics may be used in the present invention as the ceramic filtration layer. Further, instead of the hollow fiber membrane (9A) in the sterilization filter (9), a plastic foam body having fine continuous pores, a porous ceramic body or the like may be used. The pore size of the sterilization filter (9) may be selected according to the size of the target substance to be filtered and sterilized, but is usually 0.45.
It should be less than μm.

[0016]

Therefore, in the present invention, even when the water purifier is not used for a long period of time, even if the microorganisms propagate in the water purifier and the water to be treated is contaminated by the microorganisms, the microorganisms are removed by the sterilization filter. It is possible to provide a sanitary water purifier, and further supply ceramic-modified water.

[Brief description of drawings]

 FIG. 1 relates to Example 1 of the present invention.

1] Side sectional view

[Explanation of symbols] 1 Water purifier 8 Ceramic filtration layer 9 Sterilization filter 12 Check valve

Claims (6)

[Claims] 1. A water purifier comprising a ceramic filter layer and a sterilizing filter. 2. The ceramic filter layer is composed of activated ceramics obtained by immersing ferric chloride in a large amount of caustic soda solution, neutralizing with hydrochloric acid, and concentrating the solution to dip it in an aqueous solution of crystals. Water purifier according to 1. 3. The ceramic filter layer is made from an activated ceramic obtained by dissolving ferric chloride in a large amount of caustic soda aqueous solution, neutralizing it with hydrochloric acid, and concentrating the solution to obtain an aqueous solution of crystals. The water purifier according to claim 1. 4. The water purifier according to claim 1, wherein the ceramic filter layer is made of an activated ceramic that is immersed in an aqueous solution of crystals obtained by dissolving ferrous sulfate in a large amount of hydrochloric acid aqueous solution and then concentrating the solution. 5. The ceramic filter layer comprises an activated ceramic obtained by contacting air passing through an aqueous solution of crystals obtained by dissolving ferrous sulfate in a large amount of hydrochloric acid aqueous solution and then concentrating the solution. Water purifier 6. The water purifier according to claim 1, wherein a check valve is attached to the outlet side of the sterilization filter.