JPH10249141A - Device for deodorizing by ozone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively remove odorous components contained in gas. SOLUTION: This device is provided with a tank 3 having a gas feeding pipe 1 for feeding gas containing odorous components such as ammonia on the side thereof and having a discharge pipe 2 at the top thereof, a water spray pipe 4 arranged in the upper part inside the tank 3, an ozonator 12 for forming ozone, and a vortex turbine pump 11 for sucking in circulating water 6 stored in a part near the inner bottom of the tank 3 and ozone from the ozonator 12 to feed them to the water spray pipe 4. Ozone water 13 discharged from the pump 11 is caused to flow down into the tank 3 from the water spay pipe 4, and by this ozone water 13, odorous components contained in the gas fed into the tank 3 is oxidized and removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an ozone deodorizing device.

[0002]

2. Description of the Related Art FIG. 4 shows an example of a conventionally proposed ozone deodorizing device. This ozone deodorizing device includes a tank 3 having an air supply pipe 1 on a side and an exhaust pipe 2 on a top. A sprinkler pipe 4 arranged substantially horizontally above the inside of the tank 3 and having a plurality of discharge ports;
And a pump 7 for sucking the circulating water 6 stored in the vicinity of the inner bottom of the tank 3 and feeding the circulating water 6 to the water sprinkling pipe 4, and a gas containing an odor component such as ammonia (NH ₃ ). The apparatus includes a blower 8 that supplies (arrow a) to the air supply pipe 1 and an ozone generator 9 that generates ozone (O ₃ ) and supplies the ozone (arrow b) to the air supply pipe 1.

When the ozone deodorizing apparatus shown in FIG. 4 performs a deodorizing process on a gas containing an odorous component, a pump 7 is used.
Is operated to supply the circulating water 6 from the portion near the inner bottom of the tank 3 to the water sprinkling pipe 4 via the water feeding pipe 5 so that the circulating water 6 flows down continuously from the water sprinkling pipe 4.

[0004] Next, it is generated by the ozone generator 9.
Ozone (arrow b) into the tank 3 via the air pipe 1
While supplying air, the blower 8 is operated to
(NH _Three) And other gases containing odorous components (arrows a)
Air is fed into the tank 3 through the trachea 1 and
Odor component of gas (arrow a) sent into tank 3
Is oxidized by ozone (arrow b).
In addition, dust and the like contained in the gas (arrow a) are removed by the circulating water 6.
After leaving it inside the tank 3 and deodorizing
Gas (arrow c) is discharged from the exhaust pipe 2 to the outside of the tank 3.
I'm making it.

[0005]

However, the concentration of the ozone gas sent into the tank 3 is set to about 200 ppm, and the gas containing the odor component sent to the inside of the tank 3 has a concentration of about 200 to 250 ppm. When the respective concentrations of ammonia and ozone at the outlet of the exhaust pipe 2 were detected as ammonia gas, the introduction of ammonia gas was started as shown by the solid line (A ₁ ) in the change diagram of the outlet ammonia concentration in FIG. As time passes, the concentration of ammonia increases with time, while the concentration of ozone, as shown by the solid line (B ₁ ) in the change diagram of the outlet ozone concentration in FIG.
From the start of the introduction of the ammonia gas to the stop thereof, there was almost no change and it was almost constant.

That is, in the ozone deodorizing apparatus shown in FIG. 4, it is conceivable that some ammonia is dissolved in the circulating water 6 and dust is removed by the circulating water 6. The oxidation reaction of the supplied ozone gas to the ammonia gas is hardly performed, and most of the ammonia gas is released to the outside of the tank 3 without being oxidized.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide an ozone deodorizing apparatus capable of efficiently removing odor components.

[0008]

In order to achieve the above object, the ozone deodorizing apparatus according to the first aspect of the present invention has an air supply pipe through which a gas containing an odor component is supplied, and A tank having an exhaust pipe above, a sprinkler pipe arranged above the inside of the tank, an ozone generator for generating ozone, and a circulating water and ozone generator stored in the vicinity of the inner bottom of the tank. A pump for sucking the discharged ozone and sending it to the sprinkler pipe.

In the ozone deodorizing device according to a second aspect of the present invention, in addition to the configuration of the ozone deodorizing device according to the first aspect of the present invention, a flow restricting means is provided between the pump and the water sprinkling pipe. ing.

[0010] In the ozone deodorizing apparatus according to the third aspect of the present invention, in addition to the configuration of the ozone deodorizing apparatus according to the second aspect of the present invention, a high-pressure processing tank is provided between the pump and the flow rate restricting means. Provided.

According to a fourth aspect of the present invention, there is provided an ozone deodorizing apparatus according to any one of the first to third aspects of the present invention. An atomizing nozzle for spraying a fluid is provided.

According to a fifth aspect of the present invention, in the ozone deodorizing apparatus, in addition to the configuration of the ozone deodorizing apparatus according to any one of the first to fourth aspects of the present invention, air permeability and water permeability are further improved. The filling material is disposed inside the tank so as to be located between the sprinkler pipe and the circulating water stored in the portion near the inner bottom of the tank.

In any of the ozone deodorizing apparatuses according to the first to fifth aspects of the present invention, the ozone from the ozone generator and the circulating water stored near the inner bottom of the tank are sucked by a pump. The odor component contained in the gas supplied to the inside of the tank through the air supply pipe is oxidized and removed by the ozone water sprayed from the pump to the inside of the tank via the water spray pipe.

[0014] In the ozone deodorizing apparatus according to the second aspect of the present invention, the ozone water flowing from the pump to the sprinkler pipe is restricted by the flow rate restricting means, and the ozone water to be supplied from the pump to the sprinkler pipe is combined with the ozone water. Are brought into contact with each other under a high pressure condition for a predetermined period of time to improve the ozone concentration of the ozone water.

[0015] In the ozone deodorizing apparatus according to the third aspect of the present invention, the ozone water flowing from the pump to the sprinkler pipe is restricted by the flow rate restricting means, and the ozone water to be supplied from the pump to the sprinkler pipe and the ozone water. Are brought into contact with each other for a predetermined period of time under high-pressure conditions inside the high-pressure treatment tank, thereby improving the ozone concentration of the ozone water.

In the ozone deodorizing device according to the fourth aspect of the present invention, the ozone water fed from the pump to the water sprinkling tube is sprayed from the atomizing nozzle into the inside of the tank, so that the ozone water and the fine water particles are separated from each other. Produces highly active hydroxyl radicals,
Promotes oxidation of odor components contained in the gas.

In the ozone deodorizing apparatus according to the fifth aspect of the present invention, the filler inside the tank is wetted with the ozone water sprayed from the water sprinkling pipe into the tank, and the ozone water 13 and the gas to be treated are converted into water. The gas-liquid contact time with the contained ozone is lengthened, and the oxidation of the odor component contained in the gas is promoted.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a first example of an embodiment of an ozone deodorizing apparatus according to the present invention. In the figure, the same reference numerals as in FIG. 4 denote the same parts.

The ozone deodorizing apparatus shown in FIG.
A tank 3 having a pipe 1 and an exhaust pipe 2 at the top;
A water pipe 4 arranged above the inside of the tank 3 and
Gas (arrow a) containing an odor component such as
Blower 8 and ozone (O _ThreeOzone generation producing
And the water sprinkler 4 and the sprinkler 4 through the water pipe 10
And the circulating water 6 stored near the inner bottom of the tank 3 and
Absorbs ozone (arrow b) discharged from the ozone generator 12
And the vortex turbine pump 11 which is fed to the sprinkler pipe 4
Have.

Incidentally, this vortex turbine pump 11 is
It has two suction ports and one discharge port, sucks circulating water 6 from one suction port, sucks ozone (arrow b) from the other suction port, and puts ozone into the circulating water 6 from the discharge port. The ozone water 13 mixed with (arrow b) is discharged.

The exhaust pipe 2 is provided with an ozone removing device 17 containing a catalyst, and the catalyst removes residual ozone in the gas (arrow c) flowing into the exhaust pipe 2. It has become.

When deodorizing a gas containing an odor component by the ozone deodorizing apparatus shown in FIG. 1, ozone (arrow b) generated by the ozone generator 12 is supplied from the gas inlet to the vortex turbine pump 11. In addition to supplying air to the inside, the vortex turbine pump 11 is operated to suck the circulating water 6 from a portion near the inner bottom of the tank 3. The mixed ozone water 13 is generated.
Is supplied to the sprinkler pipe 4 via the water pipe 10 and the ozone water 13 is supplied.
From the sprinkler pipe 4 to the inside of the tank 3 continuously.

Next, the blower 8 is operated to send a gas containing an odor component (arrow a) to the inside of the tank 3 through the air supply pipe 1, and is sent from the air supply pipe 1 to the inside of the tank 3. Ozone water 1 in which the odor component of the gas flowing down from the sprinkler pipe 4
In addition to being oxidized by ozone contained in the tank 3, dust and the like contained in the gas are captured by the ozone water 13 and left inside the tank 3, so that the odor components are deodorized and then deodorized. The exhausted gas (arrow c) is discharged from the exhaust pipe 2 to the outside of the tank 3 via the ozone removing device 17.

Under the same conditions as the conventional ozone deodorizer shown in FIG. 4, the respective concentrations of ammonia and ozone at the tank outlet of the ozone deodorizer shown in FIG. 1 were detected. As shown by the broken line (A ₂ ) in the change diagram of the ammonia concentration at the outlet of
It decreased to about 20 ppm, while the ozone concentration
As shown by the dashed line (B ₂ ) in the change diagram of the outlet ozone concentration, the gas ozone concentration was reduced to about 60 ppm between the start of the introduction of the ammonia gas and the stop thereof.

As described above, in the ozone deodorizing apparatus shown in FIG. 1, the ozone water 1 flowing down from the water spray pipe 4 inside the tank 3 is used.
Ozone contained in 3 effectively oxidizes ammonia, oxidizes most of the ammonia, and efficiently removes odor components from the gas to be treated.

FIG. 2 shows a second example of the embodiment of the ozone deodorizing apparatus according to the present invention. In the figure, the parts denoted by the same reference numerals as those in FIG. 1 represent the same parts.

In the ozone deodorizing apparatus shown in FIG. 2, in addition to the configuration of the ozone deodorizing apparatus shown in FIG. 1, a high-pressure processing tank 14 is provided at an intermediate portion of a water supply pipe 10 which connects the vortex turbine pump 11 and the sprinkling pipe 4. Is installed, and the high pressure treatment tank 1 of the water pipe 10 is installed.
4, a pressure adjusting valve 15 is provided in the vicinity of the discharge port,
The high-pressure processing tank 1 when the vortex turbine pump 11 is operated by adjusting the opening of the pressure adjusting valve 15.
4, so that the internal pressure can be adjusted.

Further, an atomizing nozzle 16 for atomizing the ozone water 13 is provided at each of a plurality of discharge ports provided in the water sprinkling pipe 4.

When deodorizing a gas containing an odor component by the ozone deodorizing apparatus shown in FIG. 2, ozone (arrow b) generated by the ozone generator 12 is supplied from the gas inlet to the vortex turbine pump 11. In addition to supplying air to the inside, the vortex turbine pump 11 is operated to suck the circulating water 6 from a portion near the inner bottom of the tank 3. The mixed ozone water 13 is generated.
Is supplied to the water sprinkling pipe 4 through the water pipe 10 and the high-pressure processing tank 14, and the ozone water 13 is continuously sprayed from the atomizing nozzle 16 into the tank 3.

At this time, the opening degree of the pressure adjusting valve 15 is narrowed, and the ozone water 1 flowing from the high-pressure processing tank 14 to the sprinkling pipe 4 is reduced.
3, the internal pressure of the high-pressure processing tank 14 is increased, and the contact time between ozone and water in the high-pressure processing tank 14 is increased.

As a result, the water forming the ozone water 13 and the ozone come into contact with each other under a high pressure condition for a predetermined time.
The ozone concentration of the ozone water 13 to be sent to the sprinkler pipe 4 is improved.

Further, the ozone water 13 fed from the high-pressure processing tank 14 to the sprinkler pipe 4 via the water pipe 10 is supplied to the atomizing nozzle 1.
Ozone (O ₃ ) when sprayed from 6 into the tank 3
Highly active hydroxyl radicals (OH radicals) that oxidize odor components are generated from water molecules (H ₂ O) of fine water particles.

Since the above-mentioned hydroxyl radical has a higher activity than ozone, the rate at which the hydroxyl radical oxidizes the odor component contained in the gas flowing into the tank 3 from the air supply pipe 1 is higher than that of ozone. Also, in the ozone deodorizing apparatus shown in FIG. 2, the odor component can be efficiently removed from the gas to be treated.

Further, since ozone is a raw material for producing hydroxy radicals, it is possible to suppress unreacted ozone from being contained in the gas discharged from the exhaust pipe 2 to the outside of the tank 3.

FIG. 3 shows a third embodiment of the ozone deodorizing apparatus according to the present invention. In the figure, the parts denoted by the same reference numerals as those in FIGS. 1 and 2 represent the same parts.

In the ozone deodorizing apparatus shown in FIG. 3, a porous member or a filler 18 having a large surface area having air permeability and water permeability, such as a lattice member, is applied to the sprinkling pipe 4 and the inner bottom of the tank 3. It is disposed inside the tank 3 so as to be located between the stored circulating water 6.

When deodorizing a gas containing an odor component by the ozone deodorizing apparatus shown in FIG. Water 13
Is supplied to the sprinkler pipe 4 through the water pipe 10, and the ozone water 1
3 is allowed to continuously flow down from the sprinkler pipe 4 into the tank 3.

At this time, the opening of the pressure adjusting valve 15 is narrowed, and the ozone water 1 flowing from the high-pressure processing tank 14 to the
3 so that the internal pressure of the water pipe 10 is increased and the time required for the ozone water 13 to pass through a portion of the water pipe 10 upstream of the pressure regulating valve 15 in the fluid flow direction is extended. Thus, the ozone concentration of the ozone water 13 is improved.

The ozone water 13 flowing down from the sprinkler pipe 4
3 wets the filler 18 and increases the gas-liquid contact time between the ozone water 13 and ozone contained in the gas to be treated. Therefore, even in the ozone deodorizing apparatus shown in FIG. Can be efficiently removed.

Incidentally, the ozone deodorizing apparatus of the present invention is not limited to the above-described embodiment, and at least one of a flow restricting means, an atomizing nozzle and a filler is added to the ozone deodorizing apparatus shown in FIG. It is needless to say that the configuration is such that an orifice is applied in place of the flow rate regulating valve as the flow rate limiting means, and that other various changes can be made without departing from the gist of the present invention.

[0042]

As described above, according to the ozone deodorizing apparatus of the present invention, the following various excellent effects can be obtained.

(1) In any of the ozone deodorizing apparatuses according to the first to fifth aspects of the present invention, the ozone from the ozone generator and the circulating water stored in the vicinity of the inner bottom of the tank are pumped. And the ozone discharged from the pump is sprayed into the tank from the water sprinkling pipe, and the ozone water oxidizes the odor component contained in the gas supplied from the air pipe to the inside of the tank. The gas to be deodorized can be efficiently removed.

(2) In the ozone deodorizing apparatus according to the second aspect of the present invention, the ozone water flowing from the pump to the water sprinkling pipe is restricted by the flow rate restricting means, and the ozone water to be supplied from the pump to the water sprinkling pipe is formed. Water and ozone are brought into contact with each other under a high pressure for a predetermined time to improve the ozone concentration of the ozone water, and the ozone water reduces the odor component contained in the gas supplied from the air supply pipe into the tank. Because of the oxidation, the gas to be treated can be deodorized more efficiently.

(3) In the ozone deodorizing device according to the third aspect of the present invention, the ozone water flowing from the pump to the water sprinkling pipe is restricted by the flow rate restricting means, and the ozone water to be supplied from the pump to the water sprinkling pipe is formed. The water and ozone are brought into contact with each other under a high-pressure condition for a predetermined time in the high-pressure treatment tank to improve the ozone concentration of the ozone water, and the gas supplied from the air supply pipe to the inside of the tank by the ozone water is used. Since the odor component contained in the gas is oxidized, the gas to be treated can be deodorized more efficiently.

(4) In the ozone deodorizing apparatus according to the fourth aspect of the present invention, ozone water fed from the pump to the water spray pipe is sprayed from the atomizing nozzle into the tank, and ozone and fine water are sprayed. A highly active hydroxyl radical is generated from the particles, and this hydroxyl radical and ozone water
Since the odor component contained in the gas supplied from the air supply pipe to the inside of the tank is oxidized, the gas to be treated can be deodorized more efficiently.

(5) In the ozone deodorizing device according to the fifth aspect of the present invention, the filler inside the tank is wetted with the ozone water discharged from the water spray pipe into the tank, and the ozone water and the gas to be treated are used. Since the odor component is oxidized by prolonging the gas-liquid contact time with ozone contained in the gas, the gas to be treated can be deodorized more efficiently.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a first example of an embodiment of an ozone deodorizing device of the present invention.

FIG. 2 is a schematic diagram showing a second example of the embodiment of the ozone deodorizing device of the present invention.

FIG. 3 is a schematic view showing a third example of the embodiment of the ozone deodorizing device of the present invention.

FIG. 4 is a schematic view showing an example of a conventional ozone deodorizing apparatus.

FIG. 5 is a line graph showing outlet ammonia concentration associated with FIGS. 1 and 4;

FIG. 6 is a line graph showing outlet ozone concentration associated with FIGS. 1 and 4;

[Explanation of symbols]

 Reference Signs List 1 air supply pipe 2 exhaust pipe 3 tank 4 water sprinkling pipe 6 circulating water 11 vortex turbine pump (pump) 12 ozone generator 14 high-pressure processing tank 15 pressure regulating valve (flow rate limiting means) 16 atomizing nozzle 18 filler

Claims (5)

[Claims] 1. A tank having an air supply pipe on the side to which a gas containing an odor component is supplied and having an exhaust pipe above, a sprinkler pipe disposed above the inside of the tank, and an ozone generator. And a pump for sucking circulating water stored in a portion near the inner bottom of the tank and ozone discharged from the ozone generator and feeding the ozone to a sprinkling pipe. Ozone deodorizer. 2. The ozone deodorizing apparatus according to claim 1, wherein a flow rate restricting means is provided between the pump and the water sprinkling pipe. 3. The ozone deodorizing apparatus according to claim 2, wherein a high-pressure processing tank is provided between the pump and the flow rate restricting means. 4. The ozone deodorizing apparatus according to claim 1, wherein an atomizing nozzle for spraying a gas-water mixed fluid is provided on the water sprinkling pipe. 5. A filler having gas permeability and water permeability,
The ozone deodorizing device according to any one of claims 1 to 4, wherein the ozone deodorizing device is disposed inside the tank so as to be located between the water sprinkling pipe and the circulating water stored near the inner bottom of the tank.