JPH0736908B2 - Water cleaner for removing harmful ions - Google Patents

Description

Detailed Description of the Invention

The present invention relates to a water purifying agent for removing harmful ions.

[0002]

2. Description of the Related Art Conventionally, various materials have been used for purifying tap water, and among them, a water purifying agent composed of a hollow fiber membrane and granular activated carbon or a combination of a hollow fiber membrane and zeolite is effective. . The purpose of this water purifier is mainly to remove free chlorine and particles having a pore size larger than that of the hollow fiber membrane, not to remove harmful ions, and not to remove harmful ions.

Further, there is a method of using anion exchange resin of anion and cation for removing harmful ions, but the ion exchange resin is expensive and difficult to operate and regenerate, so that it is generally popular. The current situation is not.

On the other hand, protein fibers (for example, wool) per se are known as ion-exchange resins for various cations and anions and have a certain ability to adsorb heavy metals, but their adsorption ability and adsorption rate are known. Is not practically satisfactory.

[0005]

Therefore, the present inventor paid attention to the property of protein fibers as an ion-exchange resin, and although it is effective in removing harmful ions due to its large surface area, it is weak in reaction and practically used. The present invention aims to provide a harmful ion-removing water-purifying agent capable of effectively removing harmful ions and impurities dissolved in water by solving the problems that cannot be applied to water.

[0006]

One of the harmful ion-removing water purifying agents of the present invention for solving the above-mentioned problems is a composite layer consisting of two layers of wool and activated carbon from the water passage side, and two layers of wool and sponge.
A composite layer composed of layers is characterized in that a large number of layers are alternately polymerized.

[0007] Another one of the water purifying agents for removing harmful ions of the present invention is that a composite layer composed of two layers of sponge and wool and a composite layer composed of two layers of sponge and activated carbon are alternately arranged from the water passage side. It is characterized by being polymerized.

When the water-purifying agent for removing harmful ions of the present invention having the above-described structure is arranged and fixed in the middle of the flow path of water to be treated and the treated water is permeated, harmful ions and impurities dissolved in water are removed. It is temporarily adsorbed by activated carbon that is an absorbent / adsorbent, and of course animal protein fibers such as wool and sponge also have similar properties due to their large surface area, but here we use the properties of an ion exchange resin, By intermittently operating the treated water, most of the harmful ions and impurities absorbed and adsorbed by animal protein fibers such as wool and sponge are treated during the time when the water flow is stopped, and the activated carbon is retained due to the water retention structure. It also treats the amount of harmful ions and impurities absorbed and adsorbed by water into the water, and during the rest period, wool,
Animal protein fibers such as sponges are reactivated after finishing treatment of harmful ions and impurities.

As for the harmful ions and impurities absorbed / adsorbed on the activated carbon, the longer the rest time is, the greater the amount of harmful ions and impurities eluted into water due to temperature change, pressure change, fluctuation, etc. Treated with animal protein fibers such as wool and sponge. That is, the activated carbon is reactivated. Furthermore, the activated carbon plays a role of a buffer reservoir for the increase of water flow during intermittent operation and the increase of harmful ions and impurities.

Since this chemical reaction treatment is carried out in a large number of stages, the treatment capacity becomes extremely high. In particular, the treatment of impurities in warm water also utilizes the properties of an ion exchange resin,
Since it is processed by chemical reaction, the higher the temperature, the higher the processing capacity.

[0011]

EXAMPLE One example of the water purifying agent for removing harmful ions of the present invention will be described with reference to the drawing. As shown in FIG. 1, a composite layer composed of two layers of wool 1 and activated carbon 2 from the water-passing side (lower side). Three
And a plurality of decoding layers 5 composed of two layers of wool 1 and sponge 4 are alternately formed, and in this example, they are formed by eight-stage polymerization.

The harmful ion removing water purifying agent 6 of the embodiment thus constructed is set in the water purifying container 8 as shown in FIG. Then, the treated water permeates from below and is used.

Explaining a concrete test example, in a purified water container 8 having an inner diameter of 50 mm, a height of 200 mm and a capacity of 200 ml, the harmful ions are removed in the structure shown in FIG. 1 at a mixing ratio of 10 g of wool, 5 g of sponge and 30 g of activated carbon. As shown in FIG. 2, the water purifier 6 is set by arranging the nonwoven fabric filters 7 on the upper and lower sides, and tap water having a residual chlorine concentration of 0.7 ppm is passed from the lower side for 2 minutes at a flow rate of about 2 liters / minute. After intermittent operation for 4 minutes, the results shown in Table 1 below were obtained.

[0014]

[Table 1]

On the other hand, to explain this comparative example,
15 g of wool and 5 g of sponge in the same water purification container as in the test example.
Was set up with 6 layers of wool, sponge, wool, and sponge in order to remove harmful ions, by setting non-woven fabric filters on the top and bottom, and tap water with a residual chlorine concentration of 0.7 ppm from the bottom side of 2 liters. When water was passed for 2 minutes at a flow rate of 4 minutes / minute and intermittent operation was performed for 4 minutes, the results shown in Table 2 below were obtained.

[0016]

[Table 2]

As is clear from Tables 1 and 2, it is understood that the harmful ion removing water purification agents of the test examples can treat a larger amount of water and have a higher residual chlorine removal rate than the harmful ion removing water purification agents of the comparative examples.

Next, the same toxic ion removing water purification agent 6 as in the test example
The non-woven fabric filters 7 are arranged above and below the water tank and set in the water purification container 8, and 50 liters of tap water and metal ion-added test preparation water are passed from the bottom at a flow rate of 200 ml / min, respectively, When the removal state of ions and the like was analyzed, the results shown in Table 3 below were obtained. The analysis is J
It carried out according to ISK-0101.

[0019]

[Table 3]

As is clear from Table 3 above, the harmful ion removing water purification agent of the present invention can treat metal ions, and particularly hexavalent chromium and cadmium have a high removal rate and are effectively removed. I understand.

Incidentally, another one of the water purifying agents for removing harmful ions of the present invention is, as shown in FIG. 3, sponge 4, wool 1 from the water passage side.
The composite layer 9 consisting of two layers and the composite layer 10 consisting of two layers of the sponge 4 and the activated carbon 2 are alternately polymerized, and the harmful ion-removing water-purifying agent 11 is substantially harmful to the above-mentioned embodiment. The action and effect are the same as those of the ion-removing water-purifying agent 6, and only the order of the layer constitution is different.

The water purification agent for removing harmful ions of the present invention is
By using a combination of antibacterial chito acid fiber and silver-impregnated activated carbon on the water passage side, bacteria can be effectively removed at the initial stage of water passage, and hollow fiber membranes for filtration, flat membranes, ceramic filtration plates,
If a metal sintered filter plate, filter cloth, polyvinyl alcohol sponge, etc. are used in combination, red rust, oxide particles, etc. can be effectively removed at the initial stage of water flow. Furthermore, by using a combination of mineral-replenishing barite stone, far-red ceramics, zeolite, coral sand, marble, etc. on the drain side, the treated water can be seasoned at the final stage of water passage.

[0023]

INDUSTRIAL APPLICABILITY As described above, the water purifying agent for removing harmful ions of the present invention is removed by chemically reacting impurities with wool and sponge during the rest period by intermittently running water and resting. In particular, since the treatment of impurities in warm water is also carried out chemically, the higher the treatment capacity, the higher the treatment capacity. Also wool,
Metal ions can be treated by the synergistic effect of sponge and activated carbon, and hexavalent chromium and cadmium, which are harmful to the human body, can be effectively removed. Therefore, if it is used to purify drinking water at home, the daily consumption of drinking water is at most about 10 liters, and even if 2 liters / min of water is collected, it will be used for 5 minutes, and the remaining 23 hours 55 minutes. Is a rest time, and impurities and harmful ions absorbed and adsorbed by activated carbon within this rest time are taken out to wool and sponge and treated almost 100%, which is extremely useful. In addition, if the multi-tower switching treatment method is adopted, each tower can be given a sufficient downtime, so it can be used as a continuous water purifier, and harmful chlorine that damages hair and skin remains. Water purifier for morning shower, for purifying hot water, water purifier for bathroom hot water supply,
It can be sufficiently put to practical use as a water purifier for beauty salons, barber shops, hospitals, etc., a drinking water purifier for business use such as restaurants for the purpose of health maintenance, and a water purifier for producing food and drink and medicines.

[Brief description of drawings]

FIG. 1 is a view showing an example of a harmful ion removing water purification agent of the present invention.

FIG. 2 is a diagram showing a state in which the harmful ion removing water purification agent of FIG. 1 is set in a water purification container and used.

FIG. 3 is a view showing another embodiment of the harmful ion removing water purification agent of the present invention.

[Explanation of symbols]

 1 wool 2 activated carbon 3 composite layer consisting of 2 layers of wool and activated carbon 4 sponge 5 composite layer consisting of 2 layers of wool and sponge 6 water purification agent for removing harmful ions 9 composite layer consisting of 2 layers of sponge and wool 10 of sponge and activated carbon Composite layer consisting of 2 layers 11 Water purification agent for removing harmful ions

Claims (2)

[Claims] 1. A harmful substance characterized in that a composite layer composed of two layers of wool and activated carbon and a composite layer composed of two layers of wool and sponge are alternately polymerized from the water-passing side, and are composed. Deionizing water purifier. 2. A harmful feature, characterized in that a composite layer composed of two layers of sponge and wool and a composite layer composed of two layers of sponge and activated carbon are alternately polymerized from the water passage side. Deionizing water purifier