JPS63130186A - Recirculation type sterilization and purification of liquid tank - Google Patents

Abstract

PURPOSE:To prevent the change of quality, by forming a recirculation passage for taking out the liquid in a liquid tank to the outside to return the same to said tank and irradiating the flowing liquid with ultraviolet rays. CONSTITUTION:The air 20 taken in from an air take-in port 19 enters the jacket body 10 inside a sterilizing and purifying apparatus main body 6. The inside jacket part 10 is irradiated with ultraviolet rays from the ultraviolet lamp 5 at the center of said jacket part 10 and oxygen in the air 20 is converted to ozone gas. Air 7 containing ozone gas passes through an air passage 8 to be sent to the confluent part 21 of the air passage 8 and a recirculation passage 4 and mixed with the water 3 flowing through the recirculation passage 4 at the confluent part 21. The water 63 mixed with the air 7 passes through a Karman mixer 13 to become a water mixture 22 wherein the air 7 and the water 3 are uniformly dispersed and mixed and said water mixture 22 is sterilized and purified. By this method, liquids can be also regenerated.

Description

[Detailed description of the invention] <Industrial application field> This invention relates to a method for circulating sterilization and purification of a liquid tank.

<Conventional technology and its problems> Water tanks and elevated water tanks in buildings, condominiums, etc., as well as drinking water storage tanks in public transportation such as trains, ships, and airplanes, do not store water (liquid) inside for long periods of time. If the water remains in this state, microorganisms and bacteria will proliferate and the quality of drinking water will change.

This invention was made in view of the conventional situation, and is a method that does not change the quality of the liquid in the liquid tank, and even if the quality changes, it is easy to sterilize and purify it. The purpose of the present invention is to provide a method for circulating sterilization and purification of a liquid tank.

Means for Solving the Problems> In order to achieve the above object, the method for circulating sterilization and purification of a liquid tank according to the present invention includes a circulation path for taking out and returning the liquid in the liquid tank to the outside of the tank. form,
The liquid flowing in the circulation path is irradiated with ultraviolet rays [first invention (invention set forth in claim 1)],
A circulation path is formed to take the liquid inside the tank out of the tank and return it.
The liquid flowing in the circulation path is irradiated with ultraviolet rays and ozone gas is dispersed and mixed therein [second invention (invention set forth in claim 2)].

Effect> Since the liquid is irradiated with ultraviolet rays, the liquid is sterilized by the sterilizing effect of the ultraviolet rays, and the quality will not change due to the propagation of microorganisms or bacteria, and even if the quality of the liquid has already changed, the liquid will can be sterilized, purified, and regenerated (first invention).

In addition to the first aspect of the invention, since ozone gas, which has a strong sterilizing effect, is dispersed and mixed, the liquid can be sterilized and purified more reliably.

<Embodiment> A preferred embodiment of the present invention will be described below with reference to FIG. In the following description, the second invention will be mainly explained, and the first invention will be explained in the second invention.

1 is a water tank in a building, condominium, etc., which stores water for daily use. 2 shows the overall structure of the sterilization/purification device. This disposal/purification device 2 is designed to handle water 3 in a water receiving tank 1.
(indicated by - in the figure), a circulation path 4 for taking out and returning the sterilization/purification device, a sterilization/purification device main body 6 with a built-in ultraviolet lamp 5, and a
It mainly consists of an air passage 8 that mixes ozone gas-containing air 7 (indicated by a circle in the figure) generated in the purifier main body 6 into the water 3 flowing in the circulation path 4. The sterilization/purification device main body 6 has a double jacket structure of transparent material layers centered around the ultraviolet lamp 5, with the outer jacket part 9 covering a part of the circulation path 4 and the inner jacket part 10 covering a part of the air passage 8. forms part of. In the circulation path 4, 11 represents a water pump, 12 represents a filter, and 13 represents a Kalman mixer.
In the air passage 8, 14 represents a strainer, 15 represents an air pump, and 16 represents an air filter.

Note that 17 is a faucet, 18 is a drain, and 19 is an air intake port.

Air 20 taken in from the air intake port 19
(indicated by - in the figure) first enters the inner jacket portion 10 of the sterilization/purification device main body 6. Since the inner jacket part 10 is irradiated with ultraviolet light having a wavelength of 184.9 nm from the central ultraviolet lamp 5, the oxygen in the air 20 is converted into ozone gas, which has a strong sterilizing effect. Therefore, when the air exits from the inner jacket portion 1o, it becomes air 7 containing ozone gas.

This ozone gas-containing air 7 further passes through an air passage 8 and is sent to a confluence 21 between the air passage 8 and the circulation path 4. This ozone gas-containing air 7 is mixed into the water 3 flowing in the circulation path 4 at the confluence section 21. air 7
The water 3 mixed with the water 3 passes through the next Karman mixer 13, and becomes mixed water 22 (indicated by - in the figure) in which the air 7 and the water 3 are uniformly dispersed and mixed. This mixed water 22 is sterilized and purified by being dispersed and mixed with air 7 containing ozone gas. Note that the ozone gas in the air 7 dispersed and mixed into the mixed water 22 performs a sterilizing action at the time of being dispersed and mixed, and then naturally returns to the original oxygen. Therefore, this mixed water 22 is in an active state containing a large amount of oxygen.

The mixed water 22 that has passed through the Karman mixer 13 enters the outer jacket portion 9 of the sterilization/purification device main body 6.

The mixed water 22 in the outer jacket part 9 is equipped with an ultraviolet lamp 5.
Since the mixed water 22 is irradiated with ultraviolet rays, this mixed water 22 is further sterilized and purified in addition to the previous sterilization and purification by the ozone gas. The mixed water 22 that has exited the outer jacket portion 9 is returned to the original receiving water N1. In addition, faucet 1 if necessary.
You can also take out the required amount from 7. By repeating the above steps, all of the water 3 in the water tank 1 is sterilized and purified, and the quality of the water 3 can be maintained without the propagation of microorganisms, bacteria, etc. Moreover, even if the quality changes, by operating the sterilization/purification device 2, the water 3 can be sterilized and purified as described above, and the water quality can be improved and regenerated.

The second invention has been explained above, and the air 7 is dispersed in the water 3.
The first invention is to omit the structure and process of water contamination, and to sterilize and purify the water 3 in the water tank 1 only with the ultraviolet light from the ultraviolet lamp 5.

In addition, in the above description of the second invention, the air 7 that has been converted into ozone gas by the ultraviolet lamp 5 is dispersed into the water 3 in the circulation path 4.
Although the ozone gas is mixed therein, the ozone gas may be directly dispersed and mixed into the circulation path 4 using an ozone gas cylinder or the like.

In addition, since the liquid in the liquid tank is sterilized, purified, and activated, it is possible to sterilize and purify the liquid tank itself, and at the same time, immerse stainless steel equipment, etc. in the liquid tank, and sterilize the immersed items.・You may also purify it.

Effect> The method for circulating sterilization and purification of a liquid tank according to the first invention has the content as explained above, and since the liquid is irradiated with ultraviolet rays, the liquid is sterilized by the sterilizing action of the ultraviolet rays, Microorganisms and bacteria will not propagate and the quality will not change, and even if the quality of the liquid has already changed, the liquid can be sterilized and purified and regenerated.

Furthermore, in addition to the effects of the first invention, the method for circulating sterilization and purification of a liquid tank according to the second invention disperses and mixes ozone gas, which has a strong sterilization effect, so that the liquid can be sterilized and purified more reliably. can.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a sterilization/purification device used in this invention (first invention and second invention). 1- Water tank (liquid tank) 2 ... ~ Sterilization/purification device 3.22 - Water (liquid) 4 ... - Circulation path 5 - Ultraviolet lamp 7 - - Ozone gas-containing air procedure amendment (voluntary) December 27, 1986

Claims (2)

[Claims] (1) A method for circulating sterilization and purification of a liquid tank, which is characterized by forming a circulation path for taking the liquid in the tank out of the tank and returning it, and irradiating the liquid flowing in the circulation path with ultraviolet rays. (2) Circulation of a liquid tank characterized by forming a circulation path for taking out and returning the liquid in the liquid tank to the outside of the tank, irradiating the liquid flowing in the circulation path with ultraviolet rays, and dispersing and mixing ozone gas. Method of sterilization and purification.