JP2000015250A - Water purifying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water purifying apparatus capable of removing harmful substances or preventing the propagation of various bacteria and capable of also adding palatability to water. SOLUTION: A water purifying apparatus 1 is equipped with an activated carbon treatment tank 6 adsorbing and removing impurities such as harmful substances or malodorous components in water, a chlorine agent injection device 7 injecting a chlorine agent for preventing the propagation of various bacteria in water and a mineral-adding tank 8 adding, mineral components to water. In this apparatus, the mineral-adding tank 8 is packed with a mineral agent adjusted in particle size.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a water purification device,
Specifically, it is a water purification device that removes harmful components in drinking water and prevents the growth of various bacteria, and adds minerals.
In particular, the present invention relates to a water purification device suitable for purifying water in a water storage tank such as an elevated water tank installed on the roof of a building or the like.

[0002]

2. Description of the Related Art Conventionally, there has been a water purification apparatus that removes harmful substances and odorous components contained in drinking water in various water storage tanks with activated carbon or the like and injects a chlorinating agent to prevent the propagation of various bacteria. It is widely used (see Japanese Patent Application Laid-Open Nos. 7-109752 and 8-39053).

[0003]

However, although the conventional water purification apparatus has a sufficient effect for removing harmful substances and preventing the propagation of various germs, almost no consideration is given to the "deliciousness" of water. Had not been.

[0004] Therefore, an object of the present invention is to provide a water purification apparatus capable of adding a taste to water as well as removing harmful substances and the like and preventing propagation of various bacteria.

[0005]

In order to achieve the above object, the water purifier of the present invention comprises an activated carbon treatment tank for adsorbing and removing impurities such as harmful substances and odor components in water, and a germ germ in water. A chlorinating agent injection device for injecting a chlorinating agent for prevention, and a mineral addition tank for adding a mineral component to water are provided, and the mineral addition tank is filled with a mineral agent whose particle size has been adjusted. I have.

Further, the present invention provides the above-mentioned mineral addition tank, wherein both ends of the cylindrical body are gradually reduced in diameter toward an inlet and an outlet provided respectively on both ends, and the length of the tank is smaller than the diameter. Characterized in that the mineral addition tank is three times or more, and the mineral addition tank is entirely filled with the mineral agent, wherein the mineral agent is a weathered reef coral whose particle size has been adjusted, or It is characterized in that the weathered reef coral that has been adjusted is subjected to high-temperature heat treatment.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an embodiment of the water purification apparatus of the present invention, FIG. 2 is a system diagram showing an example of equipment arrangement in the water purification apparatus, FIG.
FIG. 4 is a plan view, and FIG. 5 is a partial sectional view of a main part.

[0008] The water purification device 1 is for treating water (water to be treated) in a water storage tank 2 such as an elevated water tank or a water receiving tank and sending it to a treated water tank 3. An inflow water pipe 4 is connected to the treatment water tank 3, and an outflow water pipe 5 is connected to each faucet or the like in the building.

The water purifier 1 has an activated carbon treatment tank 6 for adsorbing and removing impurities such as harmful substances and odorous components in the water with activated carbon, and a device for preventing the growth of various bacteria in the activated carbon treated water. And a mineral addition tank 8 for adding a mineral component to the chlorinated water injected with the chlorinated agent.
Ancillary facilities such as a pump 9 and a heater 10 are provided.

In a normal operation state, the water to be treated in the water storage tank 2 flows into the activated carbon treatment tank 6 through the path 11, the pump 9, and the path 12, and the activated carbon filled in the activated carbon treatment tank 6 For example, harmful substances and odorous components are adsorbed and removed by coconut shell granular activated carbon. Next, it flows out of the activated carbon treatment tank 6 to the path 13, where
A predetermined amount of a chlorinating agent, for example, sodium hypochlorite, is injected via 4. Finally, the mineral component is added through the mineral addition tank 8 and flows into the treated water tank 3 through the path 15. In the treated water flowing into the treated water tank 3 in this manner, impurities are adsorbed and removed, propagation of various bacteria is prevented by the chlorinating agent, and a state is added in which minerals are added and taste is added.

Various substances can be used as a substance for adding a mineral component to water, that is, a mineral agent to be filled in the mineral addition tank 8, but it is particularly preferable to use weathered reef coral. This weathered reef coral contains calcium carbonate as the main component (about 95%) and contains minerals such as calcium and magnesium. When water is brought into contact with this, the mineral elutes into the water and the mineral content Rich and delicious water is obtained. Further, when the weathered reef coral is subjected to a high-temperature heat treatment, more minerals can be eluted.

In addition, the mineral agent such as the weathered reef coral causes clogging when the particle size is small, and the elution amount of the mineral is small when the particle size is large. It is necessary to adjust the particle size so that a uniform water flow can be obtained and a sufficient amount of mineral eluted can be obtained. The particle size of the mineral agent can be set to an optimal particle size as appropriate according to the shape and size of the mineral addition tank 8, the amount of water, and the flow rate, but it is usually desirable to adjust the particle size to a range of 60 to 80 mesh.

On the other hand, as shown in FIG. 3 to FIG.
2 and the outlet 23, respectively, and the cylindrical body 2
1. A so-called cylinder-shaped one is used in which both ends are gradually reduced in diameter toward the inflow port 22 and the outflow port 23 and squeezed, and the length of the cylindrical body 21 is three times or more the diameter. ing. Support members 24 for supporting the cylindrical body 21 in an upright state and protecting the inflow port 22 and the outflow port 23 are provided on the outer surfaces of both ends of the cylindrical body 21, respectively.

By forming the mineral addition tank 8 as described above, the water to be treated and the mineral agent can be brought into sufficient contact, and the amount of mineral eluted into the treated water can be increased. That is, by forming the diameter gradually reduced toward the inflow port 22 and the outflow port 23, the entire amount of the filled mineral agent can be brought into contact with water,
The use efficiency of the mineral agent can be increased. In addition, by making the length of the cylindrical body 21 three times or more the diameter, the contact time between the water to be treated and the mineral agent can be lengthened while considering the space efficiency of the mineral addition tank 8 in the water purification device 1. It is possible to increase the amount of mineral eluted.

[0015]

EXAMPLE In a mineral addition tank having a shape as shown in FIG. 3, the ratio of the inner diameter D to the length (height H) was changed in various ways, and the inside of the tank was adjusted for particle size. Reef-building corals were filled, and the relationship between the H / D value and the amount of calcium eluted into the treated water was measured. FIG. 6 shows the results.

Next, assuming that the above H / D was 6, the amount of weathered reef coral with respect to the treatment capacity of the water purification apparatus (the maximum flow rate when the calcium elution amount was about 9 ppm) was measured. The results are shown below.

Processing Capacity of Water Purifier Filling amount of weathered reef coral [m ³ / h] [liter] 1.225 2.25 50 4.5 100 6.75 150

Further, the inner diameter is 192 mm and the height is 1200 m.
m mineral-added tank was filled with weathered reef coral whose particle size was adjusted, and a long-term test was conducted. As a result, as shown in FIG. 7, the removal rate of trihalomethane, which is a harmful substance, is maintained at 70% or more over 6 months, and as shown in FIG. The amount of calcium, which is a mineral component that elutes, is 1
About 0 ppm was maintained.

[0019]

As described above, according to the water purification apparatus of the present invention, in addition to the removal of harmful components and the prevention of the propagation of various bacteria as in the prior art, a mineral component for improving the taste can be added. Therefore, safe and delicious water can be supplied.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a water purification device of the present invention.

FIG. 2 is a system diagram showing an example of a device arrangement in the water purification device.

FIG. 3 is a front view showing an example of a mineral addition tank.

FIG. 4 is a plan view of the same.

FIG. 5 is a partial cross-sectional view of the main part.

FIG. 6 is a graph showing the relationship between the value of H / D and the amount of calcium eluted into treated water.

FIG. 7 is a graph showing the change over time in the removal rate of trihalomethane.

FIG. 8 is a graph showing the change over time in the amount of calcium eluted.

[Explanation of symbols]

1 ... Water purification device, 6 ... Activated carbon treatment tank, 7 ... Chlorine injection device, 8 ... Mineral addition tank

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C02F 1/50 550 C02F 1/50 550C 560 560B 560Z 1/68 510 1/68 510B 520 520M 530 530A 540 540A 540G (72) Inventor Kentaro Kikuchi 2480 Mado, Hiratsuka-shi, Kanagawa Pref. Inside the Hiratsuka Plant of Mitsubishi Plastics Co., Ltd. (72) Inventor Nobuyuki Kadokura 2-1, Tsukudo-cho, Shinjuku-ku, Tokyo ) Inventor Yoshinori Sano 2-1 Tsukudo-cho, Shinjuku-ku, Tokyo Main office in Tokyo, Kumagaya Gumi Co., Ltd. (72) Inventor Shizuo Sasaki 1043 Ogikakubo, Tsukuba-shi, Ibaraki Pref. AB02 BA02 CA11 DB23 DB26

Claims (4)

[Claims] 1. An activated carbon treatment tank for adsorbing and removing impurities such as harmful substances and odor components in water, a chlorinating agent injection device for injecting a chlorinating agent for preventing germs from growing in the water, and a mineral in the water. A water purification apparatus comprising: a mineral addition tank for adding a mineral; and a mineral agent whose particle size has been adjusted is filled in the mineral addition tank. 2. The mineral addition tank has a shape in which both ends of a cylindrical body are gradually reduced in diameter toward an inflow port and an outflow port provided at both ends, respectively. 2. The water purification device according to claim 1, wherein the mineral addition tank is filled with the mineral agent as a whole. 3. The water purification device according to claim 1, wherein the mineral agent is weathered reef coral whose particle size has been adjusted. 4. The water purification apparatus according to claim 1, wherein the mineral agent is obtained by subjecting a weathered reef coral whose particle size has been adjusted to a high-temperature heat treatment.