JP3101831B2 - Water supply device for drinking water - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply system for drinking water, and more particularly to a water supply system for drinking water in a building or attached to a building.

[0002]

2. Description of the Related Art In buildings of a certain size or more, water is received in a water receiving tank, and the water is supplied to an elevated water tank installed above the building by a pump, and water is supplied from the elevated water tank to each water tap. Treatment methods at water purification plants are broadly classified into slow filtration methods and rapid filtration methods. In this slow filtration method, raw water is passed through sand and gravel layers to purify the water. When the raw water penetrates, the colloidal material in the water forms a filtration membrane, and suspended substances adhere to and purify the filtration membrane. . On the other hand, in the rapid filtration method, chemicals are injected into raw water to perform pretreatment, and the raw water is passed through a sand layer at a relatively high speed to perform a purification action. When passing through the sand layer, suspended matter adheres to the surface of the sand particles and is purified.

[0003]

However, the slow filtration method requires a large area, requires a considerably long filtration time, and has a high level of contamination of raw water, that is, the amount of microorganisms and the amount of oxygen in water are low. If the amount is smaller than the amount of treated water, the treatment capacity will be lost. It is not very effective for coloring components such as humic substances generated by biodegradation. For this reason, a rapid filtration method has recently been adopted. In this rapid filtration method, chemicals are used in the pre-treatment, so that it often feels off-flavors such as mold odor and odor, which is insufficient for bacteriological safety. Concentrations have risen and, along with recent raw water pollution, have come to be called "bad water" and "small water." On the other hand, as a water purification device used in the building, there is a small individual device called a "water purifier" directly connected to a faucet or a tabletop, but they only perform purification using activated carbon filtration or membrane filtration. There is a lack of safety in bacteriologically, replacement of cartridges etc. is left to individual management, and the device is exposed on a faucet or tabletop, and the appearance is not good.

An object of the present invention is to effectively solve the above-mentioned problems, and an object of the present invention is to provide a drinking water supply device having a water purification function on a building scale and improving the soundness of water.

[0005]

According to the present invention, an activated carbon filter, a membrane filtration device, and finally a drinking water tank are arranged in a water supply passage from a water receiving tank. ,
A single circuit for supplying water to the drinking water tank through the mineral addition tank and the sterilizing device is connected, and a chlorine addition device is connected to the single circuit.

[0006]

According to the water supply device for drinking water of the present invention, residual chlorine and organic substances in water are adsorbed by the activated carbon filter, and various bacteria and pathogenic bacteria can be removed by the membrane filtration device. Since the single circulation path is connected to this drinking water tank, minerals can be added to water in the mineral addition tank, and various germs and pathogenic bacteria can be sterilized by the sterilizer. And since a chlorine addition device is connected to this single circuit, various bacteria and pathogenic bacteria are removed, and the minimum value of the chlorine concentration is secured.

[0007]

FIG. 1 shows an embodiment of a drinking water supply apparatus according to the present invention.
This will be briefly described with reference to FIG. The water supply channel after the water receiving tank 1 using a water supply as a water source is divided into a drinking water supply and others. An activated carbon filter 2, a membrane filtration device 3, and finally a drinking water tank 4 are sequentially arranged in a water supply path used for the beverage. A water supply pipe 5 from the drinking water tank 4 is configured as a circulation path, and a dedicated tap for drinking water 6 is attached to the water supply pipe 5. The drinking water tank 4 is connected to a single circulation path 9 for supplying water to the drinking water tank 4 through a mineral addition tank 7 and a sterilizer 8, and a chlorine addition apparatus 10 is connected to the single circulation path 9.

Hereinafter, the drinking water supply device of the present invention will be described in detail. Elevated water tank 1 dedicated to drinking water on top of building 11
2 are provided, and water is supplied from the elevated water tank 12 to each dedicated drinking water tap 6 in the building 11 by a water supply pipe 5.
A drinking water supply device 13 is provided between the water receiving tank 1 that receives the tap water supplied from the water supply company and the elevated water tank 12. The water supply path from the water receiving tank 1 is branched into drinking water and water used for other purposes, and the drinking water supply path is connected to the drinking water supply device 13.

The drinking water supply device 13 includes an activated carbon filter 2 which is easily exchanged into a cartridge and a membrane filtration device 3.
And a drinking water tank 4, and water from the water receiving tank 1 is delivered and processed according to the order described. That is, the water from the water receiving tank 1 is sent to the activated carbon filter 2, and the water collected in the water receiving tank 1 such as organic substances and ammonia produced by the growth of microorganisms is adsorbed by the activated carbon. The water treated by the activated carbon filtration device 2 is sent to the membrane filtration device 3,
Bacteria and other foreign matter are removed by the membrane filtration device 3, and the water is sent to the drinking water tank 4.

The drinking water tank 4 includes a mineral addition tank 7.
And a single circulation path 9 connected through, for example, a sterilizer 8 using ultraviolet light (UV), and water is supplied from the water receiving tank 1 according to the order described, processed, and the sterilizer 8 and the drinking water tank 4 are provided. A chlorine addition device 10 is connected to the single circulation path 9 between the two. Water is supplied from the drinking water tank 4 to the mineral addition tank 7, minerals are artificially added in the mineral addition tank 7, and thereafter, water is sent to the sterilization device 8. The water is sterilized and sent from the sterilizing device 8 to the drinking water tank 4. Here, when a low chlorine concentration is detected, for example, by a detector (not shown) attached to the drinking water tank 4, a control device for controlling the amount of chlorine supplied to the single circulation path 9 is activated, and Chlorine is supplied from the addition device 10 to the single circulation path 9 to sterilize germs and pathogens, and is sent to the drinking water tank 4 as a constant chlorine concentration.

According to such a drinking water supply device, the following effects can be obtained. As an effect of each device, residual chlorine, organic matter, etc. are filtered by the activated carbon filter 2,
Calcium odor and mold odor are removed, and various bacteria are filtered by the membrane filtration device 3, so that safe water can be obtained. Then, minerals are added in the mineral addition tank 7 to add water to the water, and the water is sterilized by the sterilizer 8 to prevent the presence of bacteria and maintain the soundness of the water. With 10, the minimum chlorine concentration in the water supply law can be secured. In addition, as an effect of the whole apparatus, since the drinking water supply device 13 is concentrated, the drinking water supply device 1 is provided.
The management and maintenance of (3) can be collectively and reliably performed. The water supply channel from the water receiving tank 1 is branched into drinking water and water to be used for another purpose, and the drinking water alone is used as a single system, thereby reducing the amount of treated water and reducing the size of the apparatus. In addition, the appearance of each water tap can be improved.

On the other hand, by connecting the single circulation path 9 to the drinking water tank 4, the number of circulations can be increased, the amount of added minerals can be secured, and the sterilization device 8 can prevent the survival of bacteria. Since the chlorine addition device 10 is connected to the single circulation path 9, the minimum value of the residual chlorine concentration can be kept constant, so that the quality of the water can be maintained. Further, water is sent from the drinking water tank 4 to the elevated water tank 12 by the water supply pipe 5, water is sent from the elevated water tank 12 to the tap for exclusive use of drinking water 6, and returned to the drinking water tank 4 by the water supply pipe 5 formed in the circulation path. It is. That is, the water in the drinking water tank 4 is prevented from staying in the pipe of the drinking water by being passed through the single circulation path 9 of the drinking water supply device 13 and constantly replaced little by little. Can be prevented.

[0013]

As is apparent from the above description, according to the supply device for drinking water of the present invention, the activated carbon filter removes the odor of mold and mold, and the germs are filtered by the membrane filtration device. It can be safe water. And the mineral content is added in the mineral addition tank, the flavor can be added to the water, sterilized by the sterilizer, the presence of bacteria is prevented,
The soundness of water can be maintained, and the minimum chlorine concentration under the Water Supply Law can be ensured by the chlorination device. In addition, by centralizing the drinking water supply system, management and maintenance of the drinking water distribution system can be assured collectively, and by using only a single system for drinking water, the equipment scale can be reduced. can do. On the other hand, by connecting a single circulation path to the drinking water tank, the number of circulations can be increased, the amount of minerals added can be ensured, and bacteria can be prevented from being generated by the sterilizing device. Since the chlorine addition device is connected to this single circulation path, the minimum value of the residual chlorine concentration can be kept constant, and the effect of maintaining the taste of water can be achieved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a first embodiment of a drinking water supply device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiving tank 2 Activated carbon filter 3 Membrane filter 4 Drinking water tank 7 Mineral addition tank 8 Sterilizer 9 Individual circulation path 10 Chlorine addition apparatus

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI C02F 1/50 560 C02F 1/50 560B 560C 560E 560Z 1/68 510 1/68 510B 540 540A 540B 540D 540G 1/76 1/76 A 9 / 00502 9/00 502E 502H 502N 502R 503 503A 504 504E E03B 11/00 E03B 11/00 Z E03C 1/10 E03C 1/10 (56) References JP-A-54-62645 (JP, A) -131383 (JP, A) Japanese Utility Model 2-75195 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) C02F 1/28 C02F 1/44 C02F 9/00 C02F 1/50 C02F 1/68 E03B 11/00 E03C 1/10

Claims (1)

(57) [Claims] An activated carbon filter, a membrane filtration device, and finally a drinking water tank are arranged in a water supply passage from a water receiving tank, and water is supplied to the drinking water tank through the drinking water tank, a mineral addition tank, and a sterilizing device. A water supply device for drinking water, wherein a single circulation path is connected, and a chlorine addition device is connected to the single circulation path.