JPH01315387A - Device for sterilizing and purifying water - Google Patents

Abstract

PURPOSE:To sterilize bacteria in bathwater with chlorine, removing the water scales by a filter, and cleaning the filter with an antibacterial agent by arranging the chlorine for sterilizing water and the purifying filter with a specified deposited antibacterial agent in the water passage. CONSTITUTION:The water sterilizing and purifying device 1 is arranged between the water circulating passages 3a and 3b of a bathtub 2 in the device for purifying bathwater, pool water, etc. The water in the bathtub 2 is passed from the passage 3a through a tank filter 7 contg. the antibacterial filter 6 to remove the water scales, hair, etc., in the water. Hypochlorous acid for sterilization from the hypochlorous acid tank is then added to the water, and the water is returned to the bathtub 2 through the passage 3b. Copper or copper sulfide, silver or silver chloride, chlorhexydine gluconate, etc., are used as the antibacterial agent in this case. Although the filter is contaminated with bacteria adhered to the water scales, etc., the propagation is controlled by the antibacterial agent. Accordingly, the water is not contaminated with bacteria.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a water purification device for commercial or domestic use that purifies water such as bath water or pool water.

Conventional technology For example, in the case of a home bath, conventional home baths simply boil water, and each time you take a bath, dirt, scales float, and bacteria grow. In particular, recently developed bubble baths with bubble generators for home use have more bacterial growth and floating scale than regular baths, resulting in unpleasant odors and slime, making them extremely unsanitary. .

Problems to be Solved by the Invention On the other hand, conventional water sterilization techniques include methods that use ultraviolet rays, chlorine, ozone, etc., but if these methods are used in home baths, bath water can be sterilized. , hot water scale etc. cannot be removed. One way to remove this scale is to filter it with a filter, but even if you simply filter the bath water, bacteria attached to the scale will grow on a part of the purification filter, creating a nest of bacteria. However, when fresh water flows into the water, the problem arises that the water is contaminated by the bacteria that have grown in the water. Therefore, it is possible to purify bath water by combining the above-mentioned sterilization technology and filter displacement technology, but since ultraviolet rays are temporary and have no long-lasting effect, they are not effective in sterilizing part of the filter. do not have. Ozone is harmful to the human body, and its use in bath environments must be avoided. Chlorine has a long-lasting effect, and the bath water can be sterilized while chlorine replenishment continues, and there is no growth of bacteria on part of the filter, but chlorine replenishment is necessary after flushing the bath water. When the water and mold that had accumulated on a part of the filter run out, bacteria and mold grow, and when fresh water flows in, the water becomes contaminated with the grown bacteria and mold, and bacteria and mold grow on the filter. If bacteria and mold grow, the fibers in the filter will deteriorate and the lifespan of the filter will be extremely shortened, so there was a need for an antibacterial filter that would not allow bacteria and mold to grow in any environment.

Means for Solving the Problems In order to solve the above problems, the water sterilization and purification device of the present invention includes:
A purification filter coated with chlorine and antibacterial agents to sterilize water is placed in the water flow path.

Function: With this configuration, bacteria that have grown in the bath water are sterilized by the chlorine, and dirt such as scale is also purified by the filter. In addition, the antibacterial agent suppresses the growth of bacteria and mold on parts of the purification filter even without chlorine replenishment, such as after flushing the bath water, allowing used water to drain and fresh water to flow in. However, fresh water will not be contaminated by bacteria or mold from purification filters. In addition, since bacteria and mold do not grow on the filter, the filter has a long service life and can be used for a long time.

Embodiment FIG. 1 shows an embodiment in which the water sterilization and purification device of the present invention is applied to a bubble bath. The water sterilization and purification device 1 was placed in the circulation channels 3a and 3b of the bath 2. The water in the bath 2 passes through a water flow path (outgoing path) of 3 m from an inlet 4, and is filtered by a pump 5 into a filter tank 7 containing an antibacterial filter 6 to remove scale, hair, and the like. Next, water from which scale and hair have been removed,
Hypochlorous acid is added from a hypochlorous acid tank 8 for chlorine sterilization in a quantitative supply device 9, sterilized with chlorine, and then sent to the water flow path (return path).
It returns to the bath 2 from the outlet 10 via 3b.

On the other hand, a jet device 11 is installed at the outlet 10, and air is sucked in through the flow pipe 12 by an ejector effect to generate bubbles. This jet device 11 increases the circulation efficiency of water in the bath 2, and sterilization and purification can be performed efficiently.

In addition, in the water sterilization and purification device of the present invention, the filter is placed in the front stream, and the chlorine sterilization device is placed in the back stream. This is because if the chlorine sterilizer is placed upstream, the sterilizing chlorine will be adsorbed by the filter, and the bath water will not be sufficiently sterilized by the chlorine.

FIG. 2 shows an example of an antibacterial retraction filter applied to the water sterilization and purification device of the present invention. The antibacterial filtration buoy, Vter 13, has a structure in which a spun yarn 15 is wound around a cylindrical core material 14 having water-flowing properties to form a gap, and the closer to the cylindrical core material 14 the spun yarn becomes. Tightly wrap the core material 1
4, forming countless long winding water channels.

Therefore, it not only has low push-back resistance but also has the advantage of effectively trapping particles smaller than the pore diameter and having a long life.

The furnace material 15 of this filter 13 for displacement includes polypropylene, cotton, polyester, acrylic, rayon,
It is composed of one or more types of spun fibers selected from the group consisting of cellulose and nylon. In this pressing 15, silver or silver chloride, chlorhexidine gluconate, 5-chloro/l/-
2-(2,4-dichlorophenoxy)pheno-/l/,
3-(trimethoxysilyl)propyldimethyloctacylammonium chloride, copper sulfide, copper, dode V1v guanidine hydrochloride, thiabendacy rho, α-bromucinnamaldehyde, 2-(3,6-dimethyl hirazoli 1v)-
One or more antibacterial agents selected from the group of 4-hydroxy-6-phenylhyrimidine and alkyl di(aminoethyl/I/)glycine hydrochloride were attached.

Next, a method for attaching an antibacterial agent to the pressed fibers of the antibacterial filter 13 will be described. Furnace fiber, water, alcohol, dimethylformacide, perchlorethylene,
trichlorethylene, acetone, methyl ethyl ketone,
A method of activating the fiber surface by immersing it in a solvent such as doluene, dimethylformamide, dimethyl nulphoxide, or ethyl acetate, and then attaching an antibacterial agent, or a method of radical polymerization of an antibacterial agent, the solvent, and a peroxide or azo compound, etc. There are methods such as immersing fibers in a solution containing a catalyst and attaching the antibacterial agent, and processing the antibacterial agent into wire rods.

The amount of the antibacterial agent attached to the fiber material is preferably 0.01 to 5.0% by weight (below 101%, the initial performance and durability are insufficient, and more than 5%, the original texture of the fiber may be affected). There is a problem with losing it.

On the other hand, the antibacterial agent is attached by impregnating the fiber material with the antibacterial agent, and then polymerizing, crosslinking, and adhering it by dry heat treatment (80° C., 3 hours), steam treatment, radiation irradiation, etc.

Next, the following method was implemented as a method for attaching an antibacterial agent to the filter for displacement.

(1) A means for attaching an antibacterial agent such as chlorhexidine gluconate or 3-()rimethoxysilicon/L/)propyldimethyloctadecyl ammonium chloride to an R-applicable filter made by winding T-material fibers such as cotton or polyester fibers during post-processing.

(2) A method for constructing a filtration filter by attaching an antibacterial agent such as chlorhexidine gluconate or 3-(trimethoxysili)v)propyldimethyloctadecyl ammonium chloride to fibers such as cotton or polyester, and winding the fibers.

(3) A method of processing silver, silver chloride, copper, etc. into wire rods and winding them together with fibers such as polypropylene to form filtration filters.

(There is a method of constructing a filtration filter by winding acrylic fibers with copper tetrasulfide attached together with fibers such as polypropylene. However, considering workability and durability, it is recommended to use copper wire or fibers with copper sulfide attached. The best method was to construct a filtration filter by winding it together with fibers such as polypropylene or polyvarnish.

The properties of the present invention were determined using the water sterilization and purification device shown in FIG. 1 and the antibacterial filter shown in FIG.

The experiment started by using a device that generates (1) chlorine, (2) ultraviolet rays, and (3) ozone, which can be considered as methods of sterilizing bath water.
We investigated which of the four methods is best for sterilizing bath water: one that is attached to the bath's circulation flow path as shown in the figure, and one that uses only an antibacterial filter as shown in Figure 2.

The evaluation was made by putting 45℃ hot water in a 200e bath.
Four adult males took a bath, and after leaving the bath for one day, the circulation pump was activated (flow rate: 22 e/ml) and the number of viable bacteria was measured. The results are shown in FIG. From this figure, 0.2 ppm of chlorine
It was found that by adding the above, bacteria that had grown in the bath could be quickly sterilized. Chlorine in this case was added as sodium hypochlorite.

As for other sterilization methods, it was confirmed that ultraviolet rays take too long to sterilize, and ozone and antibacterial filters alone cannot sterilize, so they are not suitable for sterilizing bath water.

Next, in the previous experiment, it was found that bath water can be sterilized by using chlorine. The next experiment was conducted to determine whether water would be contaminated by the bacteria that had grown in the water. 1st
The sterilizer shown in the figure was removed and the 200e bath water (40°C) in which an adult male took a bath was pumped out for 15 minutes with a circulation flow rate of 4011/min using only the filtration filter and the bath water was then drained. The next day, fill the bathtub with fresh warm water (40℃, 0 bacteria/rne) and circulate for 5 minutes.
The effectiveness of the filter of the present invention was determined by measuring the number of bacteria in the warm water. The results are shown in the table below. From this table, the filter of the present invention did not allow bacteria to grow even when scale was attached, and it was possible to prevent bacterial contamination of fresh water. Note that 1 wt% of each antibacterial agent was attached to the filter. In addition, this antibacterial filter underwent market monitoring for one year, repeating approximately 1,500 cycles of purification for 15 minutes at a circulating flow rate of 40g/min.Even at °C, there was little decline in antibacterial performance or flow rate, and it remained stable for a long time. The effect lasted. Also, the pore diameter is 75μm
By using this antibacterial displacement filter, bath water with floating scale and turbidity of 1.5 can be evacuated for 15 minutes, and the turbidity will be reduced to 0.3, resulting in clean bath water. Ta.

Effects of the Invention As described above, the water sterilization and purification device of the present invention can sterilize bacteria that have grown in bath water with chlorine in a short time, and furthermore, stains such as scale can be removed with an antibacterial filter. As a result, clean water free from bacterial and organic contamination is obtained.

On the other hand, videos attached to water scale etc. adhere to the p-filter, but the antibacterial agent suppresses their propagation.
Even if the used water is discharged and fresh water flows in, it will not be contaminated with bacteria. Furthermore, since antibacterial agents are insoluble or slightly soluble, they have a long lifespan and maintain their effects stably for a long period of time.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a water sterilization and purification device according to an embodiment of the present invention applied to a bath, Fig. 2 is a perspective view of an antibacterial filter of the same device, and Fig. 3 is a characteristic diagram of the device. . 3a, 3b... Water flow path, 6... Antibacterial retraction filter, 8... Sodium hypochlorite solution tank. Name of agent: Patent attorney Toshio Nakao and 1 other person 3a
, 3b-Mizuhori Road 8 - Diagram 1 of hypochlorite jll unacidified sodium storm tank

Claims (5)

[Claims] (1) A water sterilization and purification device in which a sterilizer and a filtration filter to which at least one antibacterial agent selected from the following group is attached are arranged in a hot water flow path. [1] Copper or copper sulfide [2] Silver or silver chloride [3] Chlorhexidine gluconate [4] 5-chloro-2-(2,4-dichlorphenoquine)phenol [5] 3-(trimethoxysilyl) Propyldimethyloctadecylammonium chloride [6] Dodecylguanidine hydrochloride [7] Thiabendazole [8] α-bromucinnamaldehyde [9] 2-(3,5-dimethylpyrazolyl)-4-hydroxy-6-phenylpyridine [10] Alkyldi (aminoethyl)glycine hydrochloride (2) The water sterilization and purification device according to claim 1, wherein the filtration filter is disposed in the upstream and the chlorine sterilization device is disposed in the downstream. (3) The water sterilization and purification device according to claim 1, wherein the filtration filter is made of at least one type of fiber selected from the group of polypropylene, polyester, cotton, acrylic, rayon, cellulose, and nylon. (4) The water sterilization and purification device according to claim 1, wherein the filtration filter has voids formed by winding spun yarn around a cylindrical core material having water-flowing properties. (5) The water sterilization and purification device according to claim 1, wherein a chlorine sterilizer, an antibacterial filtration filter, and a bubble generator are arranged in a circulating water flow path driven by a pump.