KR102284032B1 - Odor treatment device - Google Patents

Abstract

The present invention relates to an odor treatment device of an odor generation facility. More specifically, the present invention relates to an odor treatment device of an odor generation facility comprising a wet type treatment part and a plasma reaction part. An odor treatment device according to one aspect of the present invention has a high odor removal effect, reduces management costs by recirculating liquid used for removing odor and using the same, and suppressing generation of odor at a contaminated air generation point by recirculating purified air to the contaminated air generation point.

Description

Odor treatment device

The present invention relates to a malodor treatment apparatus for an odor generating facility, and more particularly, to a malodor treatment apparatus for a malodor generating facility including a wet treatment unit and a plasma reaction unit.

Ammonia, hydrogen sulfide, mercaptan, amines, etc., which are the main causes of odor in livestock odors, can cause discomfort and disgust even at low concentrations and can cause great damage to surrounding businesses.

Conventionally, oxidation, adsorption, biological decomposition, plasma decomposition, and the like are known as treatment methods for removing odors. Chemical oxidation, which is one of the conventional odor treatment methods, is a method of oxidizing and decomposing odor substances using chemical oxidizing agents (chlorine dioxide, hypochlorous acid, chlorite). There is a problem in that this can affect human health and that the oxidizing agent itself causes environmental pollution.

In addition, as another of the conventional odor treatment methods, in Korean Utility Model Publication No. 20-0408407 (registered on February 2, 2006), ammonia gas and butane gas in livestock houses are removed using activated carbon. The adsorption method is a method of adsorbing and removing odorous substances using an adsorbent with a large specific surface area such as activated carbon. However, in the adsorption method, since the odor-causing substance is semi-permanently adsorbed to the adsorbent, it is inconvenient to periodically replace the adsorbent, thereby increasing maintenance and repair costs.

As described above, most of the conventional odor treatment methods have various problems, such as adversely affecting human health or increasing maintenance costs.

In addition, according to the conventional malodor treatment method, the efficiency of removing the odor is low, and even if installed, it is difficult to operate and manage the facility, so that practicality is lowered. In particular, the odor of livestock is not easy to treat due to the high concentration of odor-causing substances.

Republic of Korea Registered Utility Model Publication No. 20-0408407 (2006.02.02.)

In one aspect, the present invention has a high odor removal effect, reduces management costs by recirculating and using a liquid used for odor removal, and recirculates purified air to a polluted air generating point to reduce odor generation at a polluted air generating point An object of the present invention is to provide an odor treatment device capable of suppressing odors.

The present invention, in one embodiment, a plasma reaction unit for primary purification treatment of the contaminated air introduced through the intake into plasma; a wet reaction unit for secondary purification of polluted air by spraying liquid into the air subjected to the primary purification treatment via the plasma reaction unit; a screen filter that is subjected to tertiary purification by passing through the secondary purifying air passing through the wet reaction unit; a recirculation spray nozzle for spraying the recirculated liquid used in the wet reaction unit to the screen filter; a reservoir in which the liquid sprayed from the wet reaction unit and the liquid sprayed to the screen filter are stored; a recirculation reservoir in which the liquid of the reservoir is stored via a recirculation filter; and a recirculation pump for supplying the liquid from the recirculation reservoir to the recirculation spray nozzle.

The malodor treatment apparatus according to an aspect of the present invention has a high malodor removal effect, reduces management costs by recirculating and using a liquid used for malodor removal, and recirculates purified air to a polluted air generating point to generate polluted air It is possible to suppress the occurrence of odors in the branch.

1 is a diagram schematically showing a side view of a malodor treatment apparatus according to one embodiment of one aspect of the present invention.
FIG. 2 is a cross-sectional view taken along line A-A' of FIG. 1 .
3 is a side view of the malodor treatment apparatus according to one embodiment of one aspect of the present invention, and is a view showing the plasma reaction unit 200 in more detail.
4 is a diagram schematically illustrating a perspective view of the plasma reaction unit 200 .
5 is a cross-sectional view taken along the line A-A' of FIGS. 3 and 4;

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 is a diagram schematically showing a side view of a malodor treatment apparatus according to an embodiment of an aspect of the present invention.

FIG. 2 is a cross-sectional view taken along line A-A' of FIG. 1 .

1 and 2, in the malodor treatment apparatus according to one embodiment of an aspect of the present invention, a plasma reaction unit ( 200), the wet reaction unit 300 for secondary purification of polluted air by spraying liquid to the air that has been subjected to the primary purification treatment via the plasma reaction unit 200, and the secondary purification via the wet reaction unit 300 The screen filter 400, which is subjected to tertiary purification by passing the treated air through, the recirculation spray nozzle 500 that is used in the wet reaction unit 300 and sprays the recirculated liquid to the screen filter 400, the wet reaction unit ( A water storage unit 600 in which the liquid sprayed from 300 and the liquid sprayed to the screen filter 400 is stored, a recirculation reservoir 700 in which the liquid of the water storage unit 600 is stored via the recirculation filter 650, and a recirculation pump 800 for supplying the liquid from the recirculation reservoir 700 to the recirculation spray nozzle 500 .

The curved arrows in FIG. 1 schematically show the flow of polluted air.

The malodor treatment apparatus according to one embodiment of one aspect of the present invention may include a plasma reaction unit 200 .

The plasma reaction unit 200 may perform a primary purification treatment with plasma of the contaminated air introduced through the intake unit 100 . In FIGS. 1 and 2 , the plasma reaction unit 200 is shown as a portion indicated by a dotted rectangle.

Meanwhile, the intake unit 100 may be configured to introduce polluted air into the malodor treatment apparatus from a polluted air generating point. An intake fan 101 may be installed in the intake unit 100 to introduce contaminated air into the malodor treatment apparatus from a point where the contaminated air is generated.

3 is a side view of a malodor treatment apparatus according to an embodiment of an aspect of the present invention, and is a view showing the plasma reaction unit 200 in more detail.

4 is a diagram schematically illustrating a perspective view of the plasma reaction unit 200 .

5 is a cross-sectional view taken along the line A-A' of FIGS. 3 and 4;

In the malodor treatment apparatus according to one embodiment of an aspect of the present invention, the plasma reaction unit 200 includes the partition walls 210 of a multi-layer structure spaced apart from each other, and between the partition walls 210 of the multi-layer structure spaced apart from each other. A plasma discharge tube 220 may be disposed. The polluted air introduced through the intake unit 100 passes through the zigzag flow path between the barrier ribs 210 of the multi-layer structure spaced apart from each other in the plasma reaction unit 200 while passing through the plasma discharge tube 220 . The odor can be removed by discharge. The curved arrow in FIG. 3 schematically shows the flow of polluted air.

3 to 5, in the malodor treatment apparatus according to an embodiment of an aspect of the present invention, the plasma reaction unit 200 includes a partition wall 210 having a multilayer structure spaced apart from each other. can do.

Referring to FIG. 4 , the partition walls 210 having a multilayer structure spaced apart from each other are, for example, the first partition wall 211 , the second partition wall 212 , the third partition wall 213 , the fourth partition wall 214 , and the fifth partition wall 214 . The partition wall 215 and the sixth partition wall 216 may be configured, but are not limited thereto.

Here, the intake unit 100 may be installed, for example, on the outer surface of any one of the four side surfaces of the odor treatment apparatus. Therefore, the inner surface of the malodor treatment apparatus in contact with the outer surface of the malodor treatment apparatus on which the intake unit 100 is installed is referred to as a first inner surface, and the second inner surface, the third inner surface, and the fourth inner surface in a clockwise direction, respectively. it is said

In one embodiment of the present invention, the first partition wall 211 is disposed at the uppermost portion and spaced apart from the upper surface of the odor treatment device, so that the polluted air introduced through the intake unit 100 is transferred to the first partition wall 211 . A polluted air flow path (hereinafter referred to as a 'first flow path') may be formed to pass between the and the upper surface of the malodor treatment device.

Meanwhile, the first partition wall 211 may be attached to the first inner surface, the second inner surface, and the fourth inner surface of the malodor treatment device, and may be disposed to be spaced apart from the third inner surface. Accordingly, the polluted air introduced through the intake unit 100 does not directly descend as it flows into the plasma reaction unit 200, and is formed between the first partition wall 211 and the upper surface of the odor treatment device (that is, the first flow path). After moving horizontally to the third inner surface of the malodor treatment device along

Meanwhile, the second partition wall 212 is spaced apart from the first partition wall 211 to form a flow path (hereinafter referred to as a 'second flow path') formed between the first partition wall 211 and the second partition wall 212 . can do.

In addition, the second partition wall 212 may be attached to the second inner surface, the third inner surface, and the fourth inner surface of the malodor treatment device, and may be disposed to be spaced apart from the first inner surface. Accordingly, after horizontal movement along the first flow path, the polluted air descending from the portion where the first partition wall 211 and the third inner surface are spaced apart from each other horizontally moves along the second flow path to the first inner surface of the malodor treatment device. The second partition wall 212 and the first inner surface descend from the spaced portion to move to a third flow path to be described later.

Similarly, the third barrier rib 213 , the fourth barrier rib 214 , the fifth barrier rib 215 , and the sixth barrier rib 216 may be disposed to be spaced apart from each other in order in the lower direction of the plasma reaction unit 200 .

The third partition wall 213 and the fifth partition wall 215 are attached to the first inner surface, the second inner surface, and the fourth inner surface of the malodor treatment device in the same manner as the first partition wall 211 , and the third inner surface It may be spaced apart from

Meanwhile, the fourth partition wall 214 and the sixth partition wall 216 are attached to the second inner surface, the third inner surface, and the fourth inner surface of the malodor treatment device in the same manner as the second partition wall 212, and the first inner surface It may be spaced apart from the surface.

With this configuration, the first flow path between the first partition wall 211 and the second partition wall 212 , the second flow path between the second partition wall 212 and the third partition wall 213 , and the third partition wall 213 and A third flow path between the fourth partition walls 214 , a fourth flow path between the fourth partition wall 214 and the fifth partition wall 215 , and a fifth flow path between the fifth partition wall 215 and the sixth partition wall 216 . can form.

Due to the configuration of the barrier ribs in the plasma reaction unit 200 , the polluted air introduced through the intake unit 100 passes between the barrier ribs 210 having a multilayer structure existing in the plasma reaction unit 200 along a zigzag flow path. moving while passing. In more detail, as indicated by the curved arrow in FIG. 4 , the polluted air introduced through the intake unit 100 has a first flow path, a second flow path, a third flow path, a fourth flow path, and a fifth flow path. The odor may be removed by plasma discharge generated in the plasma discharge tube 220, which will be described later, while moving in a zigzag shape.

Meanwhile, a plasma discharge tube 220 may be disposed between the barrier ribs 210 having a multilayer structure. Specifically, the plasma discharge tube 220 is formed between the first and second barrier ribs 211 and 212 , between the second and third barrier ribs 212 and 213 , and between the third and fourth barrier ribs 213 and 214 . ), between the fourth partition wall 214 and the fifth partition wall 215 , and between the fifth partition wall 215 and the sixth partition wall 216 .

The plasma discharge tube 220 may include a ground electrode and a discharge electrode. The plasma discharge tube 220 may be directly fixed inside the odor treatment device, but may be fixed by a holder made of a material with high heat resistance, and since a high-voltage current is transmitted to the ground electrode and the discharge electrode by the power supply unit, the fixing unit Similarly, an ethylene resin such as Teflon having good heat resistance and insulation may be used. A power supply unit (not shown) is provided to apply power for discharging at different voltages to either one or both of the ground electrode and the discharge electrode, and when power is supplied to the ground electrode and the discharge electrode through the power supply unit, the ground electrode and discharge A corona discharge is generated between the electrodes. When corona discharge occurs between the ground electrode and the discharge electrode, various chemically active specie may be generated between the ground electrode and the discharge electrode. For example, oxidatively active species may be formed, and odor-causing substances passing through the corona discharge space may be removed by the oxidatively active species.

Accordingly, the polluted air introduced through the intake unit 100 passes through the zigzag flow path between the multi-layered barrier ribs 210 existing in the plasma reaction unit 200 and the plasma discharge generated in the plasma discharge tube 220 . odors can be removed. Contaminated air introduced through the intake unit 100 passes through the multi-layered barrier ribs 210 existing in the plasma reaction unit 200 along a zigzag flow path with the plasma discharge tube 220 disposed therebetween. By making the contact area as large as possible, odor removal of polluted air by plasma discharge can be performed as efficiently as possible.

The malodor treatment apparatus according to one embodiment of one aspect of the present invention may also include a wet reaction unit 300 .

The wet reaction unit 300 may perform a secondary purification treatment of polluted air by injecting a liquid into the air subjected to the primary purification treatment via the plasma reaction unit 200 . 1 and 2, the wet reaction unit 300 is shown as a portion indicated by a dotted rectangle.

1 and 2 , in one embodiment of the present invention, the wet reaction unit 300 may be disposed below the plasma reaction unit 200 .

The wet reaction unit 300 may include a liquid spray nozzle 301 for spraying the liquid supplied from the outside of the odor treatment device into the air subjected to the primary purification treatment. The liquid spray nozzle 301 may be installed on the inner wall of the odor treatment device, and may be configured to spray the liquid into the air that has been subjected to the primary purification process via the plasma reaction unit 200 .

The liquid may be supplied to the liquid spray nozzle 301 by a liquid supply pump 302 installed outside the malodor treatment apparatus.

Water can be used as the liquid, and chemicals for removing odors, such as sodium hypochlorite (NaOCl), caustic soda (NaOH), hydrogen peroxide (H2O2), hydrogen dioxide, ammonia, chlorine dioxide (ClO2), hypochlorous acid (HOCl) , water to which chlorine dioxide has been added can be used.

On the other hand, the lower bottom surface of the wet reaction unit 300 is configured to be inclined toward the water storage unit 600 to be described later, so that the liquid sprayed from the liquid spray nozzle 301 flows into the water storage unit 600 .

The malodor treatment apparatus according to one embodiment of one aspect of the present invention may also include a screen filter 400 .

The screen filter 400 may be configured to undergo a tertiary purification process by passing the air that has been subjected to the secondary purification process through the wet reaction unit 300 to pass therethrough.

The screen filter 400 may be made of a fine mesh or non-woven fabric. Preferably, it is composed of a multi-layered micro-network or multi-layered non-woven fabric, and a filler may be filled between the micro-network or the non-woven fabric. As the filler, activated carbon or the like may be used.

As will be described later, the screen filter 400 is sprayed with the recirculated liquid used in the wet reaction unit 300 by the recirculation spray nozzle 500, and thus the liquid is sprayed on the filler. Therefore, the secondary purification process air passing through the wet reaction unit 300 can be purified once again while passing through the screen filter 400 (tertiary purification process).

In the case of the wet reaction unit 300 described above, since the liquid is sprayed in the atmosphere with respect to the polluted air, the contact rate between the liquid and the polluted air is low, and thus the purification rate of the polluted air may be low.

However, in the case of the screen filter 400, since the liquid is sprayed on the filler in the screen filter 400 and the contaminated air moves while passing between the fillers, the contact rate between the contaminated air and the liquid is high, thereby maximizing the purification rate of the contaminated air.

The malodor treatment apparatus according to one embodiment of one aspect of the present invention may also include a recirculation spray nozzle 500 , a water reservoir 600 , a recirculation reservoir 700 , and a recirculation pump 800 .

The recirculation spray nozzle 500 may be configured to spray the recirculated liquid to the screen filter 400 used in the wet reaction unit 300 .

The reservoir 600 may be configured to store the liquid sprayed from the wet reaction unit 300 and the liquid sprayed to the screen filter 400 . As described above, the lower bottom surface of the wet reaction unit 300 is configured to be inclined toward the water storage unit 600 , so that the liquid sprayed from the liquid spray nozzle 301 flows into the water storage unit 600 and is stored in the water storage unit 600 . can be Meanwhile, the liquid sprayed from the recirculation spray nozzle 500 to the screen filter 400 may naturally fall and be stored in the water storage unit 600 .

The recirculation reservoir 700 may be configured such that the liquid of the reservoir 600 is stored via the recirculation filter 650 . That is, when the odor treatment device is initially operated, the liquid sprayed from the liquid spray nozzle 301 is stored in the water storage unit 600 . Therefore, the liquid stored in the water storage unit 600 may contain contaminants such as dust or dust contained in the polluted air. Thereafter, the liquid stored in the water storage unit 600 moves to the recirculation water storage unit 700 via the recirculation filter 650 and is stored. When the liquid stored in the water storage unit 600 moves through the recirculation filter 650 , most of the contaminants contained in the liquid may be filtered.

The recirculation pump 800 may be configured to supply liquid from the recirculation reservoir 700 to the recirculation spray nozzle 500 . That is, the recirculation pump 800 is installed outside the odor treatment device to supply the liquid stored in the recirculation reservoir 700 to the recirculation spray nozzle 500 . Accordingly, the liquid is supplied from the recirculation reservoir 700 to the recirculation spray nozzle 500 by the recirculation pump 800, and then is sprayed from the recirculation spray nozzle 500 to the screen filter 400, and the sprayed liquid is It may be stored in the storage unit 600 again.

Due to this configuration, the liquid initially sprayed from the liquid spray nozzle 301 is stored in the water storage unit 600, and then stored in the recirculation water storage unit 700 via the recirculation filter 650, and in the recirculation pump 800. After being supplied to the recirculation spray nozzle 500 by the spraying on the screen filter 400, it may be stored in the water storage unit 600 again.

In another embodiment of the present invention, the recirculation spray nozzle 500 may be disposed above the screen filter 400 . Accordingly, the liquid is supplied from the recirculation reservoir 700 to the recirculation spray nozzle 500 by the recirculation pump 800, and then is sprayed from the recirculation spray nozzle 500 to the screen filter 400, and the sprayed liquid is It may fall naturally and be stored in the water storage unit 600 again.

In the malodor treatment apparatus according to another embodiment of one aspect of the present invention, the wet reaction unit 300 is disposed below the plasma reaction unit 200 , and the recirculation spray nozzle 500 is above the screen filter 400 . can be placed in In this case, between the entire plasma reaction unit 200 and a part of the wet reaction unit 300 and the recirculation spray nozzle 500 and the screen filter 400, an intermediate wall 250 blocking the flow of polluted air may be installed. can Preferably, the intermediate wall 250 may be installed to extend downwardly from the upper surface of the odor treatment apparatus to extend to the entire plasma reaction unit 200 and a part of the wet reaction unit 300 . Accordingly, the air that has been first purified through the plasma reaction unit 200 does not move directly in the horizontal direction in the wet reaction unit 300 , but moves to the lower part of the wet reaction unit 300 and then to the screen filter 400 . Since it moves, the liquid in the wet reaction unit 300 can be sufficiently sprayed into the air that has been subjected to the primary purification process.

The malodor treatment apparatus according to another embodiment of one aspect of the present invention may further include a drain valve 702 having a ball top 701 connected thereto for maintaining the water level of the recirculation reservoir 700 .

In the malodor treatment apparatus according to another embodiment of an aspect of the present invention, the intake unit 100 may be configured to introduce contaminated air into the malodor treatment apparatus from a point where the contaminated air is generated.

Also, the malodor treatment apparatus according to another embodiment of one aspect of the present invention may further include an exhaust unit 900 . The exhaust unit 900 may include an exhaust fan 901 for discharging the tertiary purified air to the outside of the odor treatment device.

The exhaust unit 900 may be configured to discharge the tertiary purified air that has passed through the screen filter 400 to the outside of the odor treatment device and at the same time recirculate it to the polluted air generating point. That is, by connecting an exhaust duct or the like to the exhaust unit 900 , the tertiary purified air discharged from the odor treatment device can be recirculated back to the polluted air generating point.

Since the tertiary purified air contains a liquid containing decontamination materials, etc., the air pollution level at the polluted air generating point can be reduced by recirculating the tertiary purified air by the odor treatment device back to the polluted air generating point. there is.

The polluted air generation point may be a livestock barn, a plastic house, a machine assembly plant, a toilet, a smoking room, a seafood processing plant, a livestock product processing plant, etc. that generate a lot of odor.

Hereinafter, various embodiments of the present invention will be described.

(1) a plasma reaction unit for primary purification treatment of the contaminated air introduced through the intake unit into plasma; a wet reaction unit for secondary purification of polluted air by spraying liquid into the air subjected to the primary purification treatment via the plasma reaction unit; a screen filter that is subjected to tertiary purification by passing through the secondary purifying air passing through the wet reaction unit; a recirculation spray nozzle for spraying the recirculated liquid used in the wet reaction unit to the screen filter; a reservoir in which the liquid sprayed from the wet reaction unit and the liquid sprayed to the screen filter are stored; a recirculation reservoir in which the liquid of the reservoir is stored via a recirculation filter; and a recirculation pump for supplying the liquid from the recirculation reservoir to the recirculation spray nozzle.

(2) The intake unit introduces the polluted air from the polluted air generating point into the odor treatment device, and discharges the tertiary purified air through the screen filter to the outside of the odor treatment device and at the same time recirculates the polluted air to the polluted air generating point. Further comprising, an odor treatment device.

(3) The plasma reaction unit includes barrier ribs having a multi-layer structure spaced apart from each other, a plasma discharge tube is disposed between the barrier ribs having a multi-layer structure spaced apart from each other, and polluted air introduced through the intake unit is present in the plasma reaction unit in a multi-layered space spaced apart from each other. An odor treatment device in which odors are removed by plasma discharge generated in a plasma discharge tube while passing through a zigzag flow path between partition walls of the structure.

(4) The wet reaction unit is disposed below the plasma reaction unit, the recirculation spray nozzle is disposed above the screen filter, and the liquid sprayed from the recirculation spray nozzle to the top of the screen filter naturally falls and is stored in the reservoir.

(5) Liquid is water or sodium hypochlorite (NaOCl), caustic soda (NaOH), hydrogen peroxide (H2O2), hydrogen dioxide, ammonia, chlorine dioxide (ClO2), hypochlorous acid (HOCl) Water, odor treatment device.

(6) The wet reaction unit includes a liquid spray nozzle for spraying the liquid supplied from the outside into the air that has been subjected to the primary purification treatment.

(7) Installed between the entire plasma reaction unit and a part of the wet reaction unit, the recirculation spray nozzle and the screen filter to block the flow of polluted air, but extend downward from the upper surface of the odor treatment device for the entire plasma reaction unit and the wet reaction and an intermediate wall extending to a portion of the portion.

Intake unit 100, plasma reaction unit 200, wet reaction unit 300, screen filter 400, recirculation spray nozzle 500, water storage unit 600, recirculation filter 650, recirculation reservoir 700 ), recirculation pump (800)

Claims (7)

a plasma reaction unit that first purifies the contaminated air introduced through the intake unit with plasma;
a wet reaction unit for secondary purification of polluted air by spraying liquid into the air subjected to the primary purification treatment via the plasma reaction unit;
a screen filter that is subjected to tertiary purification by passing through the secondary purifying air passing through the wet reaction unit;
a recirculation spray nozzle for spraying the recirculated liquid used in the wet reaction unit to the screen filter;
a reservoir in which the liquid sprayed from the wet reaction unit and the liquid sprayed to the screen filter are stored;
a recirculation reservoir in which the liquid of the reservoir is stored via a recirculation filter; and
a recirculation pump for supplying liquid from the recirculation reservoir to the recirculation spray nozzle;
includes,
The plasma reaction unit includes a multi-layered barrier rib spaced apart from each other,
Plasma discharge tubes are disposed between the barrier ribs of a multi-layer structure spaced apart from each other,
Contaminated air introduced through the intake unit passes through a zigzag flow path between barrier ribs having a multi-layered structure spaced apart from each other in the plasma reaction unit, and odor is removed by plasma discharge generated in the plasma discharge tube. The method according to claim 1,
The intake unit introduces the polluted air from the polluted air generating point into the inside of the odor treatment device,
The odor treatment apparatus further comprising an exhaust unit for discharging the tertiary purified air through the screen filter to the outside of the odor treatment apparatus and at the same time recirculating the air to the polluted air generating point. delete The method according to claim 1,
The wet reaction unit is disposed below the plasma reaction unit,
The recirculation spray nozzle is disposed above the screen filter,
The liquid sprayed on the top of the screen filter from the recirculation spray nozzle naturally falls and is stored in the reservoir. The method according to claim 1,
The liquid is water or water to which one or more of sodium hypochlorite (NaOCl), caustic soda (NaOH), hydrogen peroxide (H2O2), hydrogen dioxide, ammonia, chlorine dioxide (ClO2), hypochlorous acid (HOCl) and chlorite has been added, odor, processing unit. The method according to claim 1,
The wet reaction unit includes a liquid spray nozzle that sprays the liquid supplied from the outside into the air that has been subjected to the primary purification treatment. 5. The method according to claim 4,
It is installed between the entire plasma reaction unit and a part of the wet reaction unit and the recirculation spray nozzle and the screen filter to block the flow of polluted air, but extends downward from the upper surface of the odor treatment device to the entire plasma reaction unit and a part of the wet reaction unit The malodor treatment device further comprising an extended intermediate wall.

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