JP2000300941A - Apparatus and method for deodorization - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make efficiently, safely and appropriately decomposable a malodor component which is generated in a large quantity by using ozone. SOLUTION: A first gas liquid mixing tank 2 is equipped with a malodor component injection opening 3 of a gas containing a malodor component, a sprayer 4 which sprays water inside, and a drainage opening 5 which guides the water. To a deodorization treating tank 20, ozone generated by an ozone generator 19 is supplied to its inside, and a spray device 22 which sprays water in which the malodor component guided from the drainage opening of the first gas liquid mixing tank is solved, is equipped thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing apparatus and a deodorizing method for decomposing and deodorizing various malodorous components, and in particular, to efficiently, safely and suitably decompose a large amount of malodorous components using ozone. And a deodorizing method.

[0002]

2. Description of the Related Art In large-scale facilities such as food processing facilities, refuse disposal facilities, and animal breeding facilities, malodorous components such as ammonia and methane gas are generated by fermentation and decomposition in addition to the odors of various components themselves. If discharged directly from the facility, it would cause odor pollution, so various deodorizing devices were used.

As an example of this deodorizing device, there is one that injects ozone gas from an ozone generator into an exhaust passage from a facility to oxidize and decompose malodorous components such as ammonia and methane gas.

[0004]

However, in the above-mentioned conventional deodorizing apparatus, although there is no problem when the amount of offensive odor is small, large-scale equipment such as food processing facilities, garbage disposal facilities, animal breeding facilities, etc. Since a large amount of offensive odor components are generated in this facility, it is necessary to generate a large amount of ozone gas for decomposing the components. This large amount of ozone gas increases the risk of ozone gas leakage. Furthermore, since both the offensive odor component and the ozone gas are gases, a huge space is required to mix and react them, and the reaction between the gases takes time, so that continuous treatment is difficult, and the huge Batch processing, such as storing in a tank for a while, was required, and serious problems in space, time, and safety were inevitable.

Accordingly, an object of the present invention is to provide a deodorizing apparatus and a deodorizing method capable of decomposing a large amount of malodorous components efficiently, safely and suitably using ozone.

[0006]

Means for Solving the Problems In order to achieve the above object, a deodorizing apparatus of the present invention has an inlet for a gas containing a malodorous component, a sprayer for spraying water to the gas, and a device for dissolving the malodorous component. A gas-liquid mixing tank provided with a water outlet for discharging water, and the ozone generated by the ozone generator is supplied to the inside, and water containing a malodorous component discharged from the water-liquid outlet of the gas-liquid mixing tank is dissolved. And a deodorization tank having a sprayer for spraying.

Further, in the deodorizing method of the present invention, a gas containing a malodorous component is injected into an atmosphere where water is sprayed to dissolve the malodorous component in the water, and the water obtained by dissolving the malodorous component is treated with ozone. It is characterized by spraying into an atmosphere and bringing the ozone into contact with the water to oxidatively decompose the malodorous components in the water.

[0008] Further, the invention is characterized in that an exhaust unit provided with an ozone decomposing means for decomposing and removing excess ozone is provided in the deodorization tank.

In addition, a water tank for storing water derived from the drain port of the gas-liquid mixing tank is provided between the flow path from the drain port of the gas-liquid mixing tank to the sprayer, and the water in the water tank is filled with the water. It is characterized by being sent out to a sprayer of a gas-liquid mixing tank and circulated.

[0010] The water sprayed from the sprayer of the deodorizing tank is formed by dissolving malodorous components stored through an overflow pipe from a water tank for storing water derived from a discharge port of a gas-liquid mixing tank, It is characterized in that it is mixed with deodorized water derived from an outlet provided in a deodorization tank and is circulated for use.

Further, two or more gas-liquid mixing tanks are connected in series, and an air passage is provided between the gas-liquid mixing tanks so as to communicate in series.

[0012]

FIG. 1 shows a deodorizing apparatus 1 according to the present invention. In FIG. 1, a sprayer 2 is provided with a malodor component inlet 3 at a lower portion into which a gas containing a malodor component is injected, and sprays water upward. A first gas-liquid mixing tank provided with a drain port 5 at the bottom; and a sprayer 8 communicating with the first gas-liquid mixing tank 2 via a vent pipe 7 and spraying water upward. And a second gas-liquid mixing tank 10 having a drain port 9 at the bottom, the second gas-liquid mixing tank 10 also communicating with the second gas-liquid mixing tank 6 through a vent pipe 11, and having a sprayer 12 for spraying water upward, and a bottom part. Drain 13
A third gas-liquid mixing tank provided with
A water passage connecting the water passages 9 and 13 is connected to the water passage 14, and a first water tank provided with an overflow pipe 16 at an upper portion thereof. A first pump for sending out to 12, a second water tank connected to the overflow pipe 16 for storing water from the first water tank 15, an ozone generator 19, and an ozone generator 20 sent out from the ozone generator 19. This is a deodorization treatment tank provided with a sprayer 22 for introducing incoming ozone from below and spraying water from the second water tank 18 sent upward by the second pump 21.

In the first gas-liquid mixing tank 2,
The gas containing the malodorous component injected from the lower malodorous component injection port 3 is full, and the atomizer 4 sprays fine mist-like water into the atmosphere, so that many of the malodorous components are dissolved in the water. It is drained from the drain port 5 at the bottom of the tank. next,
A gas containing an unpleasant odor component that has not been treated in the first gas-liquid mixing tank 2 is sent out from a ventilation pipe 7 arranged above the first gas-liquid mixing tank 2, and this gas is supplied to a second gas-liquid mixing tank 2. It is injected from the lower part of the gas-liquid mixing tank 6. Then, similarly, fine mist of water sprayed from the sprayer 8 dissolves most of the remaining odorous components and flows out from the drain port 9 at the bottom of the tank. Further, the gas containing a very small amount of unpleasant odor that has not been treated in the second gas-liquid mixing tank 6 passes through the third gas-liquid mixture through the ventilation pipe 11 disposed above the second gas-liquid mixing tank 6. It is injected from the lower part of the mixing tank 10. Similarly, fine mist-like water sprayed from the sprayer 12 is discharged from the drain port 13 at the bottom of the tank after thoroughly dissolving the remaining malodorous components.

Into the first water tank 15, water in which a malodorous component is dissolved flows from the drain ports 5, 9, 13 of the three gas-liquid mixing tanks 2, 6, 10 through the water passage 14. The water is supplied continuously or intermittently by a water injection means (not shown). And this first water tank 1
5, a constant amount of water is always supplied through the first pump 17 to the sprayers 4 of the three gas-liquid mixing tanks 2, 6, 10.
8 and 12, ie the first water tank 15
A certain amount of the water in which the malodor component flowing into the water is dissolved constantly circulates, whereby the malodor component in the water in the first water tank 15 gradually increases.

As described above, when the replenishing water is gradually added to the water in which the offensive odor component is thickened and the first water tank 15 is filled with water, the overflow provided above the first water tank 15 The water in which the malodorous component is dissolved overflows from the pipe 16 and is sent out to the second water tank 18. Then, the water in which the malodorous component in the second water tank 18 is dissolved is sprayed into the deodorization treatment tank 20 in a fine mist form by the sprayer 22 through the second pump 21.

The ozone generator 19 is filled with an ultraviolet radiation gas in which argon gas and mercury vapor are mixed, or an ultraviolet radiation gas mainly composed of xenon, into a tube.
An ultraviolet lamp 23 that emits ultraviolet light having a short wavelength of m and acts on oxygen in the air to generate ozone, and a blowing member 24 that sends the ozone to the deodorization tank 20 are provided.

An ozone inlet 25 is provided in the lower part of the deodorizing tank 20 to take in ozone from the ozone generator 19, and the deodorizing tank 20 is always filled with ozone having a deodorizing and sterilizing action. It is made odorless and harmless by dissolving in mist water and oxidizing and decomposing the internal malodorous components. And the deodorizing treatment tank 20
The almost deodorized and detoxified water collected at the bottom of the tank returns to the second water tank 18 again through the drain port 26, reduces the concentration of the malodorous component in the water in the second water tank 18, and further increases the malodorous component. The diluted water is again sprayed into the deodorizing tank 20 by the sprayer 22 through the second pump 21 in the form of fine mist, and the odorous component is repeatedly oxidized and decomposed by ozone to make it odorless and harmless. is there.

Water that has been completely deodorized and made harmless by repeating the oxidizing and decomposing actions of ozone as described above is secondarily used.
Pipe 2 provided above water tank 18
It is drained outside through 7. Further, the second water tank 18 is provided with a float 29 for opening and closing the valve body 28 to open and close the valve body 28 for opening and closing a middle part of the overflow pipe 27 after a certain amount of water has accumulated in the overflow pipe 27. ing. That is, the second water tank 18 is in a state of being sealed with respect to the external drain port until the time when the water is discharged.

While a sufficient amount of ozone is continuously supplied from the ozone generator 19 into the deodorization tank 20,
It is necessary to exhaust the air in the deodorization tank 20. However, since it is not preferable to directly discharge the ozone having a strong oxidizing effect, the ozone decomposing means 3 for decomposing and removing excess ozone is provided above the deodorizing tank 20.
The exhaust unit 31 provided with 0 is provided. The ozone decomposing means 30 is provided with a catalyst means for decomposing ozone into oxygen to render it harmless, and further comprises an ultraviolet lamp for irradiating a long-wavelength ultraviolet ray of 254 nm which decomposes ozone into oxygen and also exerts a bactericidal action. It may be additionally provided.

In the above-described embodiment, three gas-liquid mixing tanks are provided in a row. However, the number of the gas-liquid mixing tanks is not limited to three. Alternatively, the number may be four or more. Before the operation of the present apparatus is started, the first water tank 15 and the second
Of the water tank 18 in advance.

[0021]

As described above in detail, according to the present invention, a gas containing a malodorous component is injected into an atmosphere where water is sprayed, and the malodorous component is dissolved in water to convert the malodorous component from a gas to a liquid. By changing the phase, the volume of the object to be deodorized is significantly reduced, which makes it possible to reduce the size of the deodorizing device and to continuously process instead of storing and processing malodorous components. By doing so, continuous and efficient deodorizing treatment can be performed.

Further, by providing an exhaust unit provided with an ozone decomposing means for decomposing and removing excess ozone in the deodorization treatment tank, a sufficient amount of ozone for the deodorization treatment is supplied into the deodorization treatment tank, and the surplus is obtained. Ozone can be decomposed and safely discharged.

Further, a water tank for storing water derived from the drain port of the gas-liquid mixing tank is provided between the flow path from the drain port of the gas-liquid mixing tank to the sprayer, and the water in the water tank is stored in the water tank. By sending and circulating the gas to the sprayer of the gas-liquid mixing tank, the concentration of the malodorous component dissolved in the water can be increased to perform the efficient deodorization treatment.

The water sprayed from the sprayer of the deodorizing tank is formed by dissolving malodorous components stored through an overflow pipe from a water tank storing water derived from a drain port of the gas-liquid mixing tank, By mixing and circulating the deodorized water derived from the discharge port provided in the deodorization processing tank and circulating it, a continuous deodorization process can be performed, and the malodorous component is more effectively and reliably deodorized. be able to.

Further, by connecting two or more gas-liquid mixing tanks and arranging an air passage between the gas-liquid mixing tanks and communicating them in series, the malodorous components in the gas can be surely dissolved in the spray water. The deodorizing efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a deodorizing device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Deodorizing device 2 1st gas-liquid mixing tank 3 Offensive odor component injection port 4 Sprayer 5 Drain port 6 2nd gas-liquid mixing tank 7 Vent pipe 8 Sprayer 9 Drain port 10 Third gas-liquid mixing tank 11 Vent pipe 12 Sprayer Reference Signs List 13 drainage port 14 water passage 15 first water tank 16 overflow pipe 17 first pump 18 second water tank 19 ozone generator 20 deodorization treatment tank 21 second pump 22 sprayer 23 ultraviolet lamp 24 blowing member 25 ozone introduction Mouth 26 Drainage port 27 Overflow pipe 28 Valve element 29 Float 30 Ozone decomposition means 31 Exhaust section

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification FI FI Theme coat ゛ (Reference) B01D 53/34 ZAB F-term (Reference) 4C080 AA07 BB02 CC13 CC14 CC15 HH02 JJ01 KK08 LL02 MM08 QQ11 4D002 AA13 AB02 AC10 BA02 BA05 BA09 CA01 CA20 DA35 DA51 EA02 GA02 GA03 GB01 GB02 GB08 HA10 4D020 AA09 BA08 BA23 BB03 BC10 CB25 CC01 CC20 CD03

Claims (6)

[Claims] 1. A gas-liquid mixing tank including an inlet for a gas containing a malodorous component, a sprayer for spraying water to the gas, and a drainage outlet for discharging water in which the malodorous component is dissolved.
A deodorizing treatment tank having a sprayer for supplying ozone generated by an ozone generator to the inside and spraying water in which a malodorous component derived from a drain port of the gas-liquid mixing tank is dissolved. Deodorizing device. 2. A gas containing a malodorous component is injected into an atmosphere in which water is sprayed to dissolve the malodorous component in the water, and water obtained by dissolving the malodorous component is sprayed into an ozone atmosphere. A deodorizing method, which comprises contacting ozone with the water to oxidize and decompose malodorous components in the water. 3. The deodorizing apparatus according to claim 1, wherein an exhaust unit provided with an ozone decomposing means for decomposing and removing excess ozone is provided in the deodorizing treatment tank. 4. A water tank for storing water derived from the drain port of the gas-liquid mixing tank is provided between the flow path from the drain port of the gas-liquid mixing tank to the sprayer, and the water in the water tank is filled with the water. 2. The deodorizing device according to claim 1, wherein the deodorizing device is sent to a sprayer of the gas-liquid mixing tank and circulated. 5. The water sprayed from the sprayer of the deodorization treatment tank is formed by dissolving malodorous components stored through an overflow pipe from a water tank storing water derived from a drain port of a gas-liquid mixing tank; 2. The deodorizing apparatus according to claim 1, wherein the deodorizing apparatus is mixed with deodorized water derived from an outlet provided in the deodorizing tank and circulated. 6. The gas-liquid mixing tank according to claim 1, wherein two or more gas-liquid mixing tanks are connected and an air passage is provided between the gas-liquid mixing tanks so as to communicate in series. Deodorizing equipment.