JP7322312B1 - Deodorizing equipment and deodorizing system - Google Patents

Abstract

An object of the present invention is to prevent problems such as clogging even when a liquid deodorant is activated sludge. A deodorizing device (20) is provided with a gas-liquid introduction part (21) into which an odorous gas and a liquid deodorant are introduced, and a disk (12) with blades that rotates and is connected to the lower end of the gas-liquid introduction part (21). The liquid deodorant falling from the gas-liquid introduction portion is sprayed against the odorous gas flowing in from the gas-liquid introduction portion 21 by the rotation of the disk 12 with blades and mixed with the odorous gas, thereby producing a gas-liquid gas. and the liquid deodorant that adsorbs odorous components from the gas-liquid gas and the treated gas from which the odorous components have been removed. and a gas-liquid separation section 23 provided with a cyclone 4 for separating into two. [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present invention relates to a deodorizing device and a deodorizing system for purifying odorous gas containing odorous components by spraying a liquid deodorant.

2. Description of the Related Art Conventionally, a deodorizing apparatus has been developed for cleaning the environmental atmosphere of facilities such as sludge composting facilities and industrial waste treatment facilities, where dust and offensive odors tend to occur at the same time, by collecting dust and deodorizing.
For example, dust and odorous gas containing odorous components are introduced from an introduction duct, the dust is separated by the centrifugal force of the rotating cylinder and dropped downward, and the odorous gas from which the dust is separated is guided upward, and the contact filling material There is a device that deodorizes with a shower and a shower (Patent Document 1).
As a deodorizing device for odorous gas containing odorous components, there is also a device that sprays a liquid deodorant such as acidic water or alkaline water from a spray nozzle to bring it into contact with the gas and liquid, and separates the deodorized gas by a swirling flow ( Patent document 2).
There is also a device that sprays a liquid deodorant (surfactant) from a spray nozzle onto an odorous gas containing odorous components to bring the gas into contact with the gas and liquid, and separates the gas deodorized by a cyclone (Patent Document 3).

JP 2004-313904 A JP 2006-25914 A JP 2010-234335 A

It is known that in addition to chemicals such as acidic water and alkaline water, activated sludge generated in wastewater treatment can be used as deodorants that capture odorous components.
Since activated sludge is generally discarded, if activated sludge can be used as a deodorant, a deodorizing apparatus with low operating costs can be obtained.
However, even if the activated sludge is liquid, it is viscous and contains solids such as organic components. Therefore, when activated sludge is used in the devices of Patent Documents 1 to 3, there is a risk of clogging of the contact filler and the spray nozzle. is high.

Therefore, in the present invention, even if the liquid deodorant is activated sludge, the gas containing the odorous component and the liquid deodorant are brought into gas-liquid contact to remove the odorous component from the gas without causing problems such as clogging. To provide a deodorizing device that removes and a deodorizing system using the device.

The deodorizing apparatus of the present invention includes a gas-liquid introduction section into which an odorous gas and a liquid deodorant are introduced; The gas-liquid contact portion generates gas-liquid gas by spraying the liquid deodorant falling from the gas-liquid introduction portion against the odorous gas flowing in from the rotation of the bladed disk and mixing with the odorous gas. and a gas-liquid separator provided with a cyclone connected to the lower end of the gas-liquid contact portion for separating the liquid deodorant adsorbing the odorous component from the gas-liquid gas and the treated gas from which the odorous component has been removed. The gas - liquid introduction part has a cylindrical outer cylinder whose center axis is arranged in the vertical direction, and is arranged above the side surface of the outer cylinder, and the odor gas is introduced into the outer cylinder. an odorous gas inlet introduced from the outside and supplied downward while swirling the inner surface of the outer cylinder; a liquid deodorant inlet for supplying upward while swirling the inner surface of the liquid deodorant; a Venturi tube having a lower end penetrating from the bottom surface of the outer cylinder to the upper surface of the gas-liquid contact portion, wherein the liquid deodorant supplied upward from the liquid deodorant inlet is the venturi tube and flows downward on the inner wall surface of the venturi tube, the odorous gas supplied downward from the odor gas inlet flows downward through the venturi tube, and the gas-liquid contact portion is located at the center and a casing having a conical inner wall surface with a diameter increasing upward from a horizontal position of the bladed disk rotating about an axis, and the sprayed liquid deodorant. The malodorous gas that has flowed into the gas-liquid contact portion bounces upward on the inner wall surface of the casing and bounces downward on the upper surface of the casing to form a circulating flow to generate the gas-liquid gas.

According to the deodorizing apparatus of the present invention, since the gas-liquid contact portion provided with the rotating disk with blades is provided, the rotation of the disk with blades can spray the liquid deodorant in the form of mist. Since contact fillers and spray nozzles that may be clogged with activated sludge are not used, even if the liquid deodorant is activated sludge, the deodorizing apparatus can continue to operate without malfunction. As a result, a deodorizing device with low operating costs is obtained.
In addition, the gas-liquid contact portion does not use a contact filler or spray nozzle, which may clog depending on the type of liquid deodorant, so maintenance is easy.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram which shows the deodorizing apparatus which concerns on embodiment. 3 is a schematic configuration diagram showing a gas-liquid introducing section according to the embodiment; FIG. FIG. 3 is a schematic configuration diagram of the gas-liquid introduction part of FIG. 2 viewed from above; 3 is a perspective half-split view of the gas-liquid introduction part of FIG. 2. FIG. It is a schematic block diagram which shows the gas-liquid contact part which concerns on embodiment. 1 is a schematic configuration diagram of an atomizer; FIG. 6 is a perspective half-split view of the gas-liquid contact portion of FIG. 5. FIG. FIG. 6 is an explanatory diagram of the gas-liquid gas flow in the gas-liquid contact portion of FIG. 5 ; It is an explanatory view for supplementary explanation of the rise of the gas-liquid gas. It is a schematic block diagram which shows the gas-liquid separation part which concerns on embodiment. FIG. 11 is a perspective half-split view of the gas-liquid separator of FIG. 10; (A) to (D) are schematic configuration diagrams showing modifications of the atomizer. It is a schematic block diagram which shows the modification of the gas-liquid contact part which concerns on embodiment. It is a schematic block diagram which shows the 1st modification of the deodorizing apparatus which concerns on embodiment. It is a schematic block diagram which shows the 2nd modification of the deodorizing apparatus which concerns on embodiment. It is a schematic block diagram which shows the 3rd modification of the deodorizing apparatus which concerns on embodiment. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram which shows the deodorizing system which concerns on embodiment. It is a schematic block diagram which shows the modification of the deodorizing system which concerns on embodiment.

1 to 16, a deodorizing device according to an embodiment of the present invention or a modification thereof will be described, and then a deodorizing system having this deodorizing device will be described with reference to FIGS. 17 and 18. FIG. The configurations and the like shown below are merely examples, and are not intended to exclude various modifications and application of techniques that are not explicitly stated. Each configuration shown in the embodiments and modifications can be modified in various ways without departing from the scope of the invention. In addition, each configuration can be selected or combined as necessary, except for the essential constituent elements of the present invention.
In the figure, an orthogonal coordinate system consisting of X, Y and Z axes is illustrated and explained. The X-axis is the horizontal direction, the Z-axis is the vertical direction (height direction), and the Y-axis is the direction orthogonal to both the X-axis and the Z-axis. Note that the arrow direction of the Z-axis is the vertical direction and the upward direction.

FIG. 1 is a schematic configuration diagram of a deodorizing device 20 of the present invention.
The deodorizing device 20 is a device that sprays a liquid deodorant into odorous gas containing odorous components and dust, and discharges the purified gas after treatment. It is used to collect dust and deodorize from the environmental atmosphere in facilities where dust and odor tend to be generated at the same time.
As shown in FIG. 1, the deodorizing device 20 includes, in order from the top along the vertical axis Z, a gas-liquid introduction portion 21, a gas-liquid contact portion 22 connected to the lower end of the gas-liquid introduction portion 21, and a gas-liquid contact portion. and a gas-liquid separation section 23 connected to the lower end of the section 22 .

The gas-liquid introduction part 21 introduces the malodorous gas and the liquid deodorant into the deodorizing device 20 and supplies them to the gas-liquid contact part 22 below. The gas-liquid contact portion 22 is disposed below the gas-liquid introduction portion 21, and receives a gas-liquid mixture of the malodorous gas and the liquid deodorant supplied from the gas-liquid introduction portion 21 (hereinafter referred to as "gas-liquid gas"). ) is generated and supplied to the gas-liquid separation unit 23 . The gas-liquid separation unit 23 is arranged below the gas-liquid contact unit 22, and separates the gas-liquid gas supplied from the gas-liquid contact unit 22 into a treated gas from which odor components and dust have been removed, and a Separate the used liquid deodorant that adsorbs the dust and discharge it.

The odorous gas is a gas containing odorous components, and may contain dust in addition to the odorous components. An example of odorous gas is the environmental atmosphere of facilities such as sludge composting facilities and industrial waste treatment facilities where dust and odor tend to be generated at the same time.
Also, the liquid deodorant is a liquid that is brought into gas-liquid contact with the malodorous gas. The liquid deodorant used in the deodorizing apparatus 20 of FIG. 1 can be appropriately selected depending on the type of odor component to be removed, and specific examples include water, acidic water, alkaline water, or activated sludge.

First, the gas-liquid introducing portion 21 will be described with reference to FIGS. 1 to 4. FIG.
As shown in FIGS. 1 and 2, the gas-liquid introduction part 21 has a central axis arranged on the vertical axis Z, and has the same shape as the cylindrical outer cylinder 1 with the upper and lower surfaces closed. A Venturi tube 2 arranged with the axis Z of is provided as a central axis.
The outer cylinder 1 forms a wall surface that forms the periphery of the gas-liquid introducing portion 21, and odorous gas and a liquid deodorant, which will be described later, are introduced into the space surrounded by the outer cylinder 1. As shown in FIG. Above the upper surface of the outer cylinder 1, a driving device 10 for driving an atomizer 12, which will be described later, is installed. A through hole 10A is provided through. This through hole 10A has a sealing structure to prevent air leakage as necessary.

The Venturi tube 2 is a funnel-shaped tubular body in which the upper diameter D2 (see FIG. 2) is larger than the lower diameter D3 (see FIG. 2). It has an upper opening 2A. Further, as shown in FIG. 1, the lower portion (lower end portion) of the venturi tube 2 penetrates the lower surface (bottom surface) of the outer cylinder 1 and protrudes into the gas-liquid contact portion 22 (see FIG. 1). 2B is arranged in the gas-liquid contact portion 22 .
As shown in FIG. 2, the central points of the upper diameter D1 of the outer cylinder 1, the upper diameter D2 of the venturi tube 2, and the lower diameter D3 of the venturi tube 2 are arranged on the same axis Z. As shown in FIG. Also, the dimension of the upper diameter D1 of the outer cylinder 1 is larger than the upper diameter D2 and the lower diameter D3 of the venturi tube 2 .
The magnitude relationship among the diameters D1, D2 and D3 is represented by the following inequality.
D1>D2>D3

The outer cylinder 1 is provided with an odor gas inlet 6 for introducing malodorous gas into the outer cylinder 1 from the outside on the upper side of the outer cylinder 1, and introducing a liquid deodorant into the outer cylinder 1 from the outside on the lower side of the outer cylinder 1. A liquid deodorant inlet 7 is provided for.
Specifically, the odorous gas inlet 6 is arranged at a position higher than the upper opening 2A of the venturi tube 2 . The liquid deodorant inlet 7 is located above the lower surface of the outer cylinder 1 and below the upper opening 2A of the venturi tube 2 .
The diameter D4 of the odorous gas inlet 6 and the diameter D5 of the liquid deodorant inlet 7 are set smaller than half the upper diameter D1 of the outer cylinder 1 .
The size relationship between the diameter D1 and D4 and D5 is represented by the following inequality.
D1>2×D4, D1>2×D5

The malodorous gas inlet 6 is configured to introduce the malodorous gas into the outer cylinder 1 and continuously supply the odorous gas downward while rotating the inner surface of the outer cylinder 1 in a predetermined rotational direction.
Specifically, the odorous gas inlet 6 includes an opening 6A penetrating through the side surface of the outer cylinder 1 and a conduit 6B communicating with the opening 6A. As shown in FIG. 3, the pipeline 6B extends along a tangential direction (indicated by a broken line in FIG. 3) on the circumference of the outer cylinder 1 viewed from above. Therefore, the malodorous gas introduced from the introduction port 6C of the pipe line 6B becomes a swirling flow swirling in the rotation direction about the axis Z along the inner peripheral surface of the outer cylinder 1 inside the outer cylinder 1 . In this embodiment, the malodorous gas is introduced along the tangential direction (X-axis direction) from left to right in FIG. 3, and a clockwise swirling flow is generated.

The liquid deodorant inlet 7 is configured to supply the liquid deodorant upward while swirling the inner surface of the outer cylinder 1 in the same rotational direction as the swirling direction of the malodorous gas.
Specifically, the liquid deodorant inlet 7 includes an opening 7A penetrating the outer cylinder 1 on the side opposite to the opening 6A of the odor gas inlet 6 with respect to the axis Z, and a conduit 7B communicating with the opening 7A. including.
The conduit 7B is arranged in the same tangential direction as the rotating direction of the swirling flow of the odorous gas, that is, along the tangential direction (X-axis direction) from right to left in FIG. Therefore, the liquid deodorant introduced from the inlet 7C of the conduit 7B flows into the outer cylinder 1 from right to left in FIG. It becomes a clockwise swirling flow similar to odorous gas.

As shown in FIG. 4, the odorous gas that has flowed into the outer cylinder 1 moves in the tangential direction of the inner surface of the outer cylinder 1 (the direction of rotation about the axis Z) by utilizing the inflow speed of the odorous gas flowing in from the odorous gas inlet 6. 4), descends while rotating inside the outer cylinder 1, and is guided into the venturi tube 2 from the upper opening 2A of the venturi tube 2. As shown in FIG.
The liquid deodorant that has flowed into the outer cylinder 1 uses the inflow speed of the liquid deodorant that flows in from the liquid deodorant inlet 7 to turn in the same rotational direction as the odor gas (two-dot chain line in FIG. 4). , it rises from the vicinity of the lower surface of the outer cylinder 1 while rotating around the outer periphery of the venturi tube 2 and overflows from the outside to the inside of the venturi tube 2 at the upper opening 2A (horizontal uppermost surface) of the venturi tube 2 . Then, the liquid deodorant turns into a swirling flow that covers the inner surface of the venturi tube 2 and flows downward. That is, the swirling flow of the liquid deodorant forms a water film covering the inner surface of the venturi tube 2 . The water film also means a state in which the malodorous gas is covered with the liquid deodorant, or a state in which the malodorous gas and the liquid deodorant are mixed.

As described above, since the diameter of the venturi tube 2 is narrower at the bottom than at the top, the odorous gas and the liquid deodorant flowing into the venturi tube 2 are swirled in the same direction and flow through the venturi tube 2 due to the venturi effect. It is accelerated and dropped and supplied from the lower opening 2B to the gas-liquid contact portion 22 (see FIG. 1).
Inside the venturi tube 2, the odorous gas is accelerated as described above to increase the centrifugal force, and swirls downward while colliding with the inner surface of the venturi tube 2. As shown in FIG. As a result, the odorous gas travels down the inner surface of the venturi tube 2 covered with the water film of the liquid deodorant, forming a high-speed swirling flow with the liquid deodorant while coming into contact with the surface. is taken into the liquid deodorant and removed.

That is, the gas-liquid introduction part 21 of the present embodiment supplies the liquid deodorant to the upper opening 2A so that it overflows (overflows) from the outside to the inside of the venturi tube 2 in a swirling upward flow state, thereby deodorizing the liquid. The agent forms a uniform water film on the inner surface of the upper opening 2A of the venturi tube 2.
In this way, a venturi structure is formed in which the inner surface of the venturi tube 2, which serves as a flow path for the odorous gas containing dust, is covered with a water film of the liquid deodorant, and the inner surface of the venturi tube 2 is constantly washed away. Both the removal of dust from the inside and the prevention of blockage of the venturi tube 2 are achieved.

Next, the gas-liquid contact portion 22 will be described with reference to FIGS. 5 to 9. FIG.
As shown in FIG. 5, the gas-liquid contact portion 22 includes an atomizer casing 3 that forms a wall surface surrounding the internal space of the gas-liquid contact portion 22, and a venturi tube 2 inside the atomizer casing 3 below the venturi tube 2 (indicated by a broken line in FIG. 5). and a disk-shaped atomizer 12 with blades rotatably installed in the body.
In the gas-liquid contact portion 22, the odorous gas and the liquid deodorant are supplied from the venturi tube 2 into the space surrounded by the atomizer casing 3, and the rotation of the atomizer 12 sprays the liquid deodorant onto the odorous gas. A liquid gas is produced.

As shown in FIG. 5, the atomizer casing 3 is formed of a cylindrical member arranged with the same axis Z as the venturi tube 2 as its central axis. and a truncated conical lower portion 3B having a lower surface diameter smaller than that of the upper surface side.
A through hole 3E is provided through the center of the upper surface of the atomizer casing 3, and the lower end of the venturi tube 2 is inserted into the atomizer casing 3 through the through hole 3E. Further, the upper end of the cyclone 4 (part of the gas-liquid separating section 23 indicated by the dashed line in FIG. 5) is connected to the lower surface of the atomizer casing 3 . The bottom surface of the atomizer casing 3 is open and communicates with the top opening of the cyclone 4 .

An atomizer 12 is arranged below the venturi tube 2 in the atomizer casing 3 . The atomizer 12 has a disk 12A centered on the axis Z and blades 12B erected on the upper surface of the disk 12A.
The lower end of the drive shaft 11 extending along the axis Z is connected to the center of the disk 12A (atomizer 12). The drive shaft 11 passes through the gas-liquid introduction portion 21 from the lower end of the venturi tube 2, protrudes upward from the through hole 10A (FIGS. 1 and 2) in the upper surface of the outer cylinder 1, and extends to the drive device 10 (FIGS. 1 and 2) at its upper end. 1).
The rotational force of the drive device 10 is transmitted to the atomizer 12 via the drive shaft 11, and the atomizer 12 rotates about the axis Z in a predetermined rotational direction. The rotating direction of the atomizer 12 is set to be the same as the rotating direction of the swirling flow of the malodorous gas and the liquid deodorant generated in the gas-liquid introducing section 21 .

FIG. 6 is a perspective view illustrating the basic configuration of the atomizer 12. FIG. As shown in FIG. 6, the disk 12A is a circular plate member arranged perpendicular to the axis Z (surfaces along the X-axis and Y-axis directions). blades 12B are radially attached from the center of the disk 12A toward the circumference (end). In FIG. 6, two blades 12B are arranged symmetrically with respect to the Z axis. Each blade 12B is a rectangular flat plate piece extending in a plane perpendicular to the upper surface of the disk 12A.

The shape of the atomizer 12 (that is, the shape, the number of blades 12B, the mounting position, the mounting angle, etc.) and the number of revolutions depend on the flow rate of the odorous gas, the liquid amount of the liquid deodorant, and the liquid deodorant to be obtained by rotation. It is arbitrarily set according to the particle size of the droplets, the peripheral speed of the atomizer 12, and the air volume and air pressure to be obtained by rotation. That is, the shape and rotation speed of the atomizer 12 can be arbitrarily changed as needed.
Further, a shear member may be further attached on the disk 12A to enhance the dispersibility of the liquid deodorant.

As shown in FIG. 5, the atomizer 12 is spaced downward by a predetermined distance S from the lower end of the venturi tube 2 . The space S is the space between the lower end of the venturi tube 2 and the upper edge of the vane of the atomizer 12, and is set to an appropriate dimension so that the lower end of the venturi tube 2 and the upper edge of the vane of the atomizer 12 do not interfere with each other.
The lower end of the disk 12A of the atomizer 12 is arranged above the lower end of the lower portion 3B of the atomizer casing 3 and below the lower end of the upper portion 3A. That is, the vertical position of the disk 12A of the atomizer 12 is set between the upper end and the lower end of the lower portion 3B of the atomizer casing 3. As shown in FIG.
The lower portion 3B of the atomizer casing 3 is formed as a truncated cone whose diameter increases upward from the vertical position of the disk 12A. has a conical inner wall surface that narrows.

As shown in FIG. 5, the large diameter side of the lower portion 3B of the atomizer casing 3 is set to have the same dimension as the diameter D6 of the upper portion 3A. The smaller diameter side of the lower portion 3B is set smaller than the diameter D6 and equal to the diameter D7 of the upper end side of the cyclone 4. As shown in FIG. Further, the diameter D8 of the atomizer 12 is set smaller than the diameter D7 and larger than the outer diameter of the lower portion of the venturi tube 2 (diameter D3 in FIG. 2).
The magnitude relationship among the diameters D6, D7, D8 and D3 (see FIG. 2) is represented by the following inequality.
D6>D7>D8>D3
Further, the diameter of the through hole 3E provided in the upper surface of the atomizer casing 3 is set substantially equal to the diameter D3 (see FIG. 2), and the upper surface of the atomizer casing 3 is closed except for the area where the through hole 3E is provided. ing.

As shown in FIG. 7, in the gas-liquid contact portion 22, the odorous gas flowing from the lower opening 2B of the venturi tube 2 (one-dot chain line in FIG. 7) and the liquid deodorant falling from the lower opening 2B (second dashed line) collides with the disk 12A of the atomizer 12 rotating below the lower opening 2B, and is accelerated by the centrifugal force of the blades 12B accompanying the rotation of the atomizer 12, and scatters in the centrifugal direction of the axis Z to form a dispersed mist. be done. As a result, a gas-liquid gas in which the malodorous gas and the liquid deodorant are in a gas-liquid mixed state is generated. Here, the liquid deodorant supplied from the venturi tube 2 is sheared into fine particle diameters by collision and rotation with the atomizer 12 and becomes atomized. The contact area between the dust in the gas and the odor component increases. Therefore, the dust and odorous components in the odorous gas are likely to be adsorbed by the atomized liquid deodorant.

As shown in FIG. 8, when the atomized gas-liquid gas (indicated by black circles in FIG. 8) scatters in the centrifugal direction (in the plane above the X-axis and the Y-axis), collides with the inner wall surface 3C of the lower portion 3B of the atomizer casing 3 arranged in the rim, and is bounced back.
As shown in FIGS. 7 and 8, since the inner wall surface 3C of the lower portion 3B forms an inclined surface that is inclined at the inclination angle α, the vapor-liquid gas is caused by the centrifugal force generated by the inclination angle α to cause the inner wall surface 3C of the lower portion 3B to It becomes an upward current that rolls up along the

A supplementary explanation will be given of the kinetic energy of the gas-liquid gas that forms an upward flow as described above.
The kinetic energy of the gas-liquid gas radially ejected by the centrifugal force of the atomizer 12 collides with the inner wall surface 3C, is reflected, and is converted into a swirling flow within the casing 3. FIG. 9 is an explanatory diagram of the kinetic energy of gas-liquid gas. A right triangle in FIG. 9 schematically represents an inner wall surface 3C having an inclination angle α. Assuming that the kinetic energy of the gas-liquid gas radially ejected from the atomizer 12 is F, and the input angle at the time of collision with the inclined surface of the atomizer casing 3 is α, the kinetic energy of the gas-liquid gas collides with the inner wall surface 3C and bounces back. The direction of F' forms the same angle .alpha. as the input angle .alpha. The reflection angle is dispersed between F' and Fa due to the force component Fa, the weight due to the difference in particle size, viscosity, surface tension, etc., and both are converted into upward kinetic energy.

Returning to FIGS. 7 and 8, the gas-liquid gas rising along the inner wall surface 3C collides with the upper surface 3D of the atomizer casing 3, rebounds downward, and becomes a downward flow along the lower outer surface of the venturi tube 2. . Then, the gas-liquid gas that has become a downward flow collides with the disk 12B of the atomizer 12 again, becomes a doughnut-shaped swirling flow (circulating flow) that repeats the movement accelerated by the atomizer 12, and repeats gas-liquid contact.

Thus, in the gas-liquid contact portion 22, the liquid deodorant sprayed by the atomizer 12 and the odorous gas flowing into the atomizer casing 3 from the venturi tube 2 rebound upward on the inner wall surface 3C of the lower portion 3B of the atomizer casing 3, and , bounces downward on the upper surface 3D to form a circulating flow and generate gas-liquid gas. The donut-shaped swirling flow itself of the swirling flow also continues to largely rotate in the same direction as the rotation direction of the atomizer 12 .
The gas-liquid contact portion 22 is continuously supplied with the odorous gas and the liquid deodorant from the venturi tube 2, and the gas-liquid gas is continuously generated. Part of the gas flows downward from the atomizer casing 3 in a swirling flow through the gap between the atomizer 12 and the atomizer casing 3 and flows into the gas-liquid separator 23 .

In the gas-liquid contact portion 22 configured as described above, the gas-liquid gas generated by the rotation of the atomizer 12 turns into an upward flow in the atomizer casing 3 by converting the centrifugal force into an upward force, forming a doughnut-shaped swirling flow. , so that the liquid deodorant in the gas-liquid gas and the dust and odorous components in the odor gas come into contact with each other, increasing the removal rate.
In addition, since the atomizer 12 is arranged coaxially below the venturi tube 2, the odorous gas flowing from the venturi tube 2 always passes through the upper surface of the disk 12A of the atomizer 12 (rotating surface). Therefore, the odorous gas flowing from the venturi tube 2 can be reliably circulated in the gas-liquid contact portion 22, and the odorous gas does not circulate in the gas-liquid contact portion 22, and the gas-liquid separation portion of the next step can be used. A "short pass" that moves to 23 is unlikely to occur.

In addition, since the liquid deodorant is continuously (always) dropped from the venturi tube 2, the inner surface of the atomizer casing 3 is washed by the swirling flow of the newly supplied liquid deodorant spray. Therefore, the inner surface of the atomizer casing 3 is less likely to be clogged with dust or the like.
Furthermore, the gas-liquid contact portion 22 of the present embodiment exhibits a blowing function with the atomizer 12 as an impeller, the atomizer casing 3 as a fan casing (impeller casing), and the venturi tube 2 as a suction port. Pressure loss in the present deodorizing device 20 can be reduced.

The gas-liquid separator 23 will be described with reference to FIGS. 10 and 11. FIG.
As shown in FIG. 10, the gas-liquid separation section 23 is connected to the lower end of the atomizer casing 3 (gas-liquid contact section 22), and separates the gas-liquid gas flowing from the atomizer casing 3 into the liquid deodorant and the processing gas. It has a cyclone 4 for liquid separation and discharge.
The cyclone 4 is arranged with the same axis Z as that of the atomizer casing 3 as a center axis, and is formed of a tubular member with both upper and lower ends open. ) 4A and a truncated conical funnel (conical portion) 4B connected to the lower end of the straight body portion 4A and having a diameter that narrows downward from the lower end.

A water sealing tube 13 extending downward along the axis Z is connected to the opening at the lower end of the cyclone 4 (funnel portion 4B). The water seal tube 13 is contained in a water seal tank 5 arranged below the cyclone 4 . The water-sealed pipe 13 forms a flow path for flowing the liquid deodorant separated from gas and liquid by the cyclone 4 into the water-sealed tank 5 .
The water-sealing tank 5 is formed of a cylindrical member with its upper and lower ends arranged with the axis Z as its central axis. It is closed with a liquid deodorant. A drain port 9 is provided on the upper side of the side surface of the water sealing tank 5 to communicate the inside of the water sealing pipe 13 with the outside. The position of the drain port 9 is above the lower end of the water seal tube 13 and is set based on the liquid surface height (water seal height) of the liquid deodorant sealed in the water seal tank 5 . Specifically, a predetermined water seal height is set at the lower end position of the drain port 9 . As a result, the liquid deodorant that has flowed above the height of the water seal is drained to the outside through the drain port 9 .

The cyclone 4 is provided with a processing gas outlet 8 for discharging the processing gas to the outside. The processing gas outlet 8 is formed by a pipeline that communicates the inside and the outside of the cyclone 4. One end of the pipeline provided inside the cyclone 4 serves as an intake port 8A for the processing gas, and the other end is provided inside the cyclone 4. forms the processing gas outlet 8B.
Specifically, the processing gas outlet 8 is arranged on the axis Z (near the center of the straight body portion 4A) and is connected to a standpipe portion 8C extending upward from below along the axis Z and the upper end of the standpipe portion 8C. It is formed of a curved pipe including a lateral pipe portion 8D which extends radially outward and protrudes outward through the wall surface of the straight body portion 4A. An intake port 8A that opens downward is provided at the lower end of the standpipe portion 8C. A discharge port 8B is provided at the tip of the lateral tube portion 8D protruding from the side wall of the straight body portion 4A.

The upper diameter D7 of the cyclone 4 is set to be the same as the diameter of the lower end of the upper atomizer casing 3, and is set larger than the lower diameter D10 of the cyclone 4. The diameter of the water seal tube 13 is set to be the same as the lower diameter D10 of the cyclone 4 .
The diameter D13 of the water sealing tank 5 is larger than the diameter D10 of the water sealing pipe 13 (lower diameter of the cyclone 4). Also, the vertical dimension (length) L4 of the water seal tank 5 is larger than the sum of the required water seal height Hs and the diameter D12 of the drain port 9 . That is, L4>Hs+D12.

The shape of the cyclone 4 is set according to the desired gas-liquid separation efficiency.
Specifically, the vertical dimension (length) of the straight body portion 4A of the cyclone 4 is L1, the vertical dimension (length) of the funnel portion 4B is L2, and the processing gas outlet 8 is measured from the upper end of the funnel portion 4B. Assuming that the dimension up to the inlet 8A (the height of the processed gas outlet 8) is L3, the ratio between L1 and L2 and the height of L3 are determined by the gas-liquid separation efficiency to be obtained by the cyclone 4. .

The gas-liquid gas flows into the gas-liquid separation section 23 configured as described above from the lower portion of the gas-liquid contact section 22 (indicated by the dashed line in FIG. 11) disposed above.
As shown in FIG. 11, the gas-liquid gas (indicated by the dashed-dotted line and the dashed-double-dotted line in FIG. 11) supplied from the atomizer casing 3 (gas-liquid contact portion 22) passes through the cyclone 4 while maintaining the swirling flow and swirling speed. along the inner surface of the cyclone 4 and flows downward along the inner surface of the cyclone 4 while swirling around the axis Z.
While flowing through the cyclone 4, the gas-liquid gas is accelerated in the funnel portion 4B whose diameter is narrowed downward and is given a large centrifugal force, and is separated into droplets of the treated gas and the liquid deodorant. . The droplets of the liquid deodorant are droplets of the liquid deodorant that have adsorbed odorous components from the gas-liquid gas. The treated gas (also referred to as treated gas) is gas-liquid gas from which odorous components have been removed.

The gas-liquid-separated treated gas reverses its flow direction below the cyclone 4 and rises in the anti-gravity direction. In the cyclone 4, the central axis Z is the position where the dynamic pressure due to centrifugal force is not generated and the pressure is the lowest. , and is discharged to the outside of the cyclone 4 from the discharge port 8B of the processing gas outlet 8 .

The droplets of the liquid deodorant separated from gas and liquid in the cyclone 4 gather on the inner surface of the cyclone 4 by centrifugal force and surface tension to become liquid. The liquid deodorant returned to the liquid state on the inner surface of the cyclone 4 flows downward along the inner surface of the cyclone 4 due to gravity, and is discharged to the water-sealed tank 5 through the water-sealed pipe 13 connected to the bottom of the cyclone 4. be done.
In the water seal tank 5, the liquid deodorant that has flowed through the water seal tube 13 is stored up to the height of the water seal. It overflows from the drain port 9 provided on the upper side wall of the water seal tank 5 and is drained (discharged).

In the gas-liquid separation section 23 configured as described above, the swirling flow velocity generated by the rotation of the atomizer 12 in the gas-liquid contact section 22 arranged above is used as it is to generate the gas-liquid separation effect in the cyclone 4. It can be used as a speed.
In addition, since the reverted liquid deodorant always flows on the inner surface of the cyclone 4, even when activated sludge is used as the liquid deodorant, the adhesion of the activated sludge to the inner surface of the cyclone 4 is suppressed. and prevent occlusion.

12A to 12D are modifications of the atomizer 12. FIG.
An atomizer 120A according to Modification 1 shown in FIG. 12A differs from the above-described atomizer 12 in that the number of blades 12B is three (two or more), and other points are the same. The three blades 12B are arranged radially at regular intervals on the upper surface of the disk 12A.
As for the number of blades 12B, when the diameter and number of revolutions of the disk 12A are the same, the blowing efficiency changes as the number of blades 12B changes. In general, there is a tendency that the greater the number of blades 12B, the higher the blowing efficiency. Although there is an upper limit to the improvement in efficiency due to an increase in the number of blades, the atomizer 120A according to Modification 1 can increase the blowing efficiency compared to a configuration in which two blades 12B are provided.
Further, when activated sludge is used as the liquid deodorant, the greater the number of blades 12B, the more effectively the activated sludge can be dispersed by shearing.

An atomizer 120B according to Modification 2 shown in FIG. 12B is different from atomizer 120A of Modification 1 in that each blade 12B has a curved shape. The vane 12B has a curved shape curved toward the side opposite to the rotation direction of the atomizer 120B with respect to a ray passing through the axis Z (indicated by a dashed line in the figure). The more streamlined the blade shape of the atomizer 12, the higher the blowing efficiency. Therefore, the atomizer 120B according to Modification 2 can improve the air blowing efficiency as compared with the configuration in which the blades 12B are linear along the radial line.

An atomizer 120C according to Modification 3 shown in FIG. 12C differs from the atomizer 120B according to Modification 2 in that a plurality of protrusions 12C are provided on the upper surface of a disc 12A. The plurality of protrusions 12C are arranged at equal intervals along the circumferential direction on the outer peripheral portion of the upper surface of the disk 12A. The shape of the protrusion 12C may be freely set.
When a plurality of projections 12C are provided on the disc 12A like the atomizer 120C, when activated sludge is used as the liquid deodorant, the activated sludge collides with the projections 12C and is sheared, increasing the dispersion efficiency of the activated sludge. The greater the number of projections 12C, the higher the dispersion efficiency.

An atomizer 120D according to Modification 4 shown in FIG. 12D differs from the atomizer 120B of Modification 2 in that blades 12B' are provided on the lower surface of disk 12A. In the atomizer 120D shown in FIG. 12(D), three curved blades 12B' curved in the direction opposite to the rotation direction of the atomizer 120B are arranged on the rear side of the blades 12B on the upper surface of the disk 12A. is provided in the same shape as
By providing the blades 12B' on the lower surface of the disc 12A, the peripheral speed of the gas-liquid gas at the inlet of the cyclone 4 arranged below the atomizer 120D can be increased. Therefore, the gas-liquid separation performance of the cyclone 4 is improved.

FIG. 13 is an explanatory diagram of a first modified example of the deodorizing device 20. As shown in FIG. The deodorizing device 20A is obtained by modifying the gas-liquid contact portion 22 of the deodorizing device 20, and has a plurality of gas-liquid contact portions 22U and 22D continuously arranged in the vertical direction.
Specifically, a connecting pipe 3X is connected to the lower portion of the atomizer casing 3U of the gas-liquid contact portion 22U on the upstream side, and the atomizer casing 3D of the gas-liquid contact portion 22D on the downstream side is connected via this connecting pipe 3X. It is Atomizers 12U and 12D are provided in the respective atomizer casings 3U and 3D, and the atomizers 12U and 12D of the respective atomizer casings 3U and 3D are driven using the same drive device 10 and drive shaft 11. As shown in FIG.
In this way, when the gas-liquid contact portions 22U and 22D are configured in multiple stages, the more stages there are, the more chances of gas-liquid contact. In the case of the multi-stage structure, although the volume of air to be processed does not change, the greater the number of stages, the greater the blowing pressure generated by the atomizers 12U and 12D.

FIG. 14 is an explanatory diagram of a second modification of the deodorizing device 20. As shown in FIG. It is a configuration in which two or more devices having the same configuration as the deodorizing device 20 are connected in series. Here, for the sake of simplicity of explanation, an example in which two deodorizing devices 20B and 20B' are connected in series and the treatment process by each deodorizing device 20B and 20B' is repeated in two stages is shown. Specifically, as shown in FIG. 14, the processed gas outlet 8 of the upstream deodorizing device 20B is connected to the odor gas inlet 6' of the downstream deodorizing device 20B', and the downstream deodorizing device 20B' is connected. deodorizes the treated gas from the upstream deodorizing device 20B.
By repeating the treatment process by the deodorizing device in two or more stages in series, odorous components and dust can be more reliably removed from the odorous gas. Also, the greater the number of stages, the greater the chance of gas-liquid contact, and the greater the efficiency of dust removal and deodorization.

FIG. 15 is an explanatory diagram of a third modification of the deodorizing device 20. As shown in FIG. Two devices having the same configuration as the deodorizing device 20, that is, deodorizing devices 20C and 20C' are connected in series. The deodorizing device 20C further includes a circulation path 15 connecting the lower part of the water sealing tank 5 and the liquid deodorant inlet 7, and a water pump 14 provided on the circulation path 15. ' and the liquid deodorant inlet 7', and a water pump 14' provided on the circulation path 15'.
A part of the liquid deodorant that has flowed into the water seal tank 5 is returned to the liquid deodorant inlet 7 through the circulation path 15 by the water pump 14 and supplied to the gas-liquid introduction section 21 again. Also, part of the liquid deodorant that has flowed into the water seal tank 5' is returned to the liquid deodorant inlet 7' through the circulation path 15' by the water pump 14', and is again supplied to the gas/liquid introduction portion 21'.
In FIG. 15, the upstream deodorizing device 20C uses acidic water as the liquid deodorant, and the downstream deodorizing device 20C' uses alkaline water as the liquid deodorant. Sulfuric acid or hydrochloric acid can be used as acid water. Alkaline water can be sodium hydroxide, sodium hypochlorite, or the like.
Concentration meters such as pH (hydrogen ion concentration), ORP (oxidation-reduction potential), and CL (chlorine ion) of the liquid deodorant circulating in the circulation paths 15 and 15' are installed to automatically measure the concentration of the circulating liquid, Injection of acid water or alkaline water can be automatically controlled.
Either one of the upstream deodorizing device 20C and the downstream deodorizing device 20C' can be operated independently. Also, although the two-stage configuration of the deodorizing devices 20C and 20C' has been described here, additional deodorizing devices may be added in the same connection relationship to form a configuration of three or more stages.
In addition, supplementary water can be supplied from the outside to the water seal tanks 5 and 5' and mixed with acidic water or alkaline water. Alternatively, activated sludge may be supplied to the water sealing tanks 5, 5' instead of the supplementary water, and the activated sludge may be mixed with acidic water or alkaline water.

FIG. 16 is an explanatory diagram of a fourth modification of the deodorizing device 20. As shown in FIG. The gas-liquid separation unit 23 of the deodorizing device 20 is divided into a plurality of pieces to form a multi-cyclone structure.
In a deodorizing device 20D shown in FIG. 16, two gas-liquid separation sections 23A and 23B are connected in parallel to one gas-liquid contact section 22. As shown in FIG. The two gas-liquid separation sections 23A and 23B are configured in the same manner, and the gas-liquid gas supplied from the gas-liquid contact section 22 branches and flows into the two gas-liquid separation sections 23A and 23B. . The processing gas outlet 8 of each gas-liquid separation section 23A, 23B is connected to one discharge pipe 8'.
Since the separation efficiency of the cyclone 4 increases as the diameter of the cyclone 4 decreases, the gas-liquid separation efficiency increases as the number of divisions of the gas-liquid separator 23 increases. It should be noted that the processing air volume and pressure loss of the deodorizing device 20 do not change even if the number of divisions of the gas-liquid separating section 23 increases.

FIG. 17 shows a deodorizing system as an embodiment of the present invention using the deodorizing device 20 of the embodiment or its modifications (first to fourth modifications) (hereinafter collectively referred to simply as "deodorizing device"). It is a block diagram explaining an example of composition.
As shown in FIG. 17, the deodorizing system 50 includes a fermentation tank 30 for generating odorous gas to be treated, the above-described deodorizing apparatus, and wastewater treatment for supplying activated sludge used as a liquid deodorant to the deodorizing apparatus. a device 40;
The fermenter 30 is an example of an odor gas generating source that generates an odor gas, which is the gas to be treated, and is a container for fermenting the materials accommodated therein. Odorous gas generated by fermentation is supplied to the deodorizing device. The odorous gas generating source is not limited to the fermenter 30, and any source that generates malodorous gas may be used.

The wastewater treatment device 40 is a device that treats wastewater through various treatment processes and discharges the treated water, and produces activated sludge in the wastewater treatment. Specifically, the wastewater treatment apparatus 40 is equipped with a biological treatment facility that produces activated sludge as a treatment facility.
Activated sludge generated in the wastewater treatment equipment 40 is supplied to the deodorizing equipment as a liquid deodorant. Further, the liquid deodorant (deodorized waste water) discharged from the drain port 9 of the deodorizing device is circulated to the waste water treatment device 40 .

In the deodorizing system 50 of the embodiment, the deodorizing device brings the odorous gas supplied from the fermentation tank 30 into sufficient gas-liquid contact with the atomized activated sludge supplied from the wastewater treatment device 40, and the odorous gas contained in the Dust and odor components are taken into the activated sludge and removed, and the treated gas and activated sludge are separated and discharged.
The deodorizing system 50 is a so-called biological deodorizing system that utilizes the property that the activated sludge of the biological treatment facility of the wastewater treatment device 40 easily captures odor components, and deodorized waste water (activated sludge) separated and discharged by the deodorizing device is recycled. By returning to the waste water treatment device 40 and circulating, the removed dust and odor components can be recovered in the activated sludge by the action of microorganisms in the biological treatment equipment of the waste water treatment device 40 .
The deodorizing system of the present invention can be applied to simultaneous removal of dust and odor, removal of only dust, or removal of only odor.

FIG. 18 is a block diagram illustrating a modification of the deodorizing system 50 shown in FIG. 17. As shown in FIG. A deodorizing system 50' of FIG. 18 is obtained by adding a packed tower type biological deodorizing device 60 to the rear stage of the deodorizing system 50 of FIG. The packed tower type biological deodorizing device 60 is a deodorizing device in which a tower-shaped device is filled with a carrier to which microorganisms are adhered, and the treated gas discharged from the deodorizing device is supplied as the gas to be treated.
Make-up water is supplied to the packed tower type biological deodorizer 60 in order to replenish moisture necessary for the microorganisms used in biological treatment and to take in and remove odorous components adsorbed by the microorganisms. In the deodorizing system 50' of FIG. 18, activated sludge from the waste water treatment apparatus 40, which is the same liquid deodorizing material used in the deodorizing apparatus, is supplied to the packed tower biological deodorizing apparatus 60 as make-up water.

In the deodorizing system 50' of FIG. 18, the treated gas from which dust has been removed and deodorized by the deodorizing device can be supplied to the packed tower biological deodorizing device 60 for deodorizing in two stages.
In general, packed tower type biological deodorizers require a large carrier surface area and residence time due to the slow adsorption speed of odorous components by microorganisms. It has a weak point that it tends to be weak against concentration fluctuations of odorous components. In addition, when the gas to be treated contains dust, there is a drawback that the dust adheres to the carrier (filler) and clogs it, preventing the gas to be treated from flowing.
In the deodorizing system 50' of FIG. 18, the gas to be treated from which dust has been removed and deodorized by the deodorizer is supplied to the packed tower biological deodorizer 60. Therefore, the gas to be treated in the packed tower biological deodorizer 60 is , the concentration of the odorous component is small and stable, the above weaknesses and drawbacks are eliminated, and the size of the packed tower type biological deodorizing device 60 can be reduced, resulting in a highly economical system.
Instead of the activated sludge to be supplied to the deodorizing device and the packed tower type biological deodorizing device 60, fresh water, acidic or alkaline wash water, recycled water from the waste water treatment device, miscellaneous service water, etc. can be appropriately selected and used.
Further, in the deodorizing system 50' of FIG. 18, instead of the packed tower type biological deodorizing device 60, a chemical washing deodorizing device can be provided. Also in this case, the same effect as described above can be obtained.

With the above configuration, the deodorizing device and deodorizing system of the present invention have the following effects.
Since the liquid film and droplets of the liquid deodorant supplied from the top of the deodorizing device always wash away the inside of the device, there is no risk of dust and the like accumulating anywhere in the deodorizing device.
As a mechanism for increasing the contact area between the liquid deodorant and the odorous components in the gas to be treated (odorous gas), the liquid deodorant is supplied onto a rotating disc, and the liquid deodorant is deodorized by the centrifugal force and shear force caused by the rotation. An atomizer with an impeller structure is used to disperse and atomize the agent. Therefore, when activated sludge is used as a liquid deodorant, activated sludge can be atomized without using a spray device (spray nozzle) or a contact filler, which may clog with activated sludge. That is, even when activated sludge is used as the liquid deodorant, there is no clogging point such as in a spray device.

As described above, even if the liquid deodorant is activated sludge, the deodorizing apparatus and deodorizing system of the present invention can continue to operate without causing any trouble. Thus, the deodorizing apparatus and deodorizing system of the present invention have a structure suitable for using activated sludge as a liquid deodorant, and are therefore inexpensive and economical.

In addition, in the deodorizing apparatus of the present invention, the malodorous gas mixed with gas and liquid in the atomizer circulates in the atomizer casing while being stirred in a donut shape, so that the contact efficiency for dust removal and deodorization is high.
Since the impeller structure (disk and blades) of the atomizer plays a role of spraying and blowing the liquid deodorant, it is possible to reduce or eliminate the pressure loss of devices such as venturi tubes and cyclones.
Furthermore, the deodorizing device of the present invention always swirls the odorous gas containing liquid droplets in the same direction of rotation (the direction of rotation along the circumferential direction of the device) from the venturi tube on the upstream side to the atomizer, the atomizer casing and the cyclone. Therefore, the gas-liquid separation effect is large, and the inner surface of the apparatus can be cleaned due to the speed at which it collides with the inner surface of the apparatus.

1 Outer cylinder 2 Venturi tube 2A Upper opening 2B Lower opening 3 Atomizer casing 3A Upper part 3B Lower part 3C Inner wall surface 3D Upper surface 3E Through hole 4 Cyclone 4A Straight body part 4B Funnel part 5 Water sealing tank 6 Odor gas inlet 6A Opening 6B Pipe line 6C Inlet 7 Liquid deodorant inlet 7A Opening 7B Pipe line 7C Inlet 8 Treated gas outlet 8A Intake 8B Discharge port 8C Vertical pipe 8D Horizontal pipe 9 Drain 10 Drive device 10A Through hole 11 Drive shaft 12 Atomizer 12A Disk 12B Blade 12B Disk 13 Water seal tube 14 Water pump 15 Circulation channel 20 Deodorizing device 21 Gas-liquid introduction part 22 Gas-liquid contact part 23 Gas-liquid separating part 30 Fermentation tank 40 Waste water treatment device 50 Deodorizing system 60 Filled tower type biological deodorizing device

Claims (5)

a gas-liquid introduction part into which the odorous gas and the liquid deodorant are introduced;
A disc with rotating blades is connected to the lower end of the gas-liquid introduction section, and the blades are provided with the liquid deodorant dropping from the gas-liquid introduction section against the odor gas flowing in from the gas-liquid introduction section. a gas-liquid contact part that generates a gas-liquid gas by spraying and mixing with the odor gas by rotating the attached disk;
a gas-liquid separation unit connected to the lower end of the gas-liquid contact unit and provided with a cyclone for separating the liquid deodorant that has adsorbed odorous components from the gas-liquid gas and the treated gas from which the odorous components have been removed; , has
The gas-liquid introduction part is
a cylindrical outer cylinder having a central axis arranged in a vertical direction;
an odorous gas inlet disposed above the side surface of the outer cylinder, which introduces the odorous gas from the outside of the outer cylinder and supplies the odorous gas downward while swirling the inner surface of the outer cylinder;
a liquid deodorant inlet disposed below the side surface of the outer cylinder, for introducing the liquid deodorant from the outside of the outer cylinder and supplying the liquid deodorant upward while swirling the inner surface;
A lower end portion that is disposed inside the outer cylinder and has a funnel shape that narrows conically downward from the upper end and penetrates from the bottom surface of the outer cylinder to the upper surface of the gas-liquid contact portion. a venturi tube comprising
The liquid deodorant supplied upward from the liquid deodorant inlet overflows from the outside of the venturi tube, flows downward on the inner wall surface of the venturi tube, and is supplied downward from the odor gas inlet. the odorous gas to be emitted flows downwardly through the venturi tube,
The gas-liquid contact part is
the bladed disk that rotates about the central axis;
a casing having a conical inner wall surface whose diameter widens upward from the horizontal position of the disk with blades,
The malodorous gas flowing into the sprayed liquid deodorant and the gas-liquid contact portion bounces upward on the inner wall surface of the casing and bounces downward on the upper surface of the casing to form a circulating flow of the gas. A deodorizing device that generates liquid gas . The gas-liquid separator is
the cyclone having a cylindrical straight body portion connected to the lower end of the casing, and a funnel portion connected to the lower end of the straight body portion and having a diameter that conically narrows downward from the lower end;
In the cyclone, a curve having one end located near the center and downward of the straight body part, and the other end extending from the one end to the outside through a wall surface above the straight body part. having a tube and
2. A deodorizing apparatus according to claim 1 , wherein said other end serves as an outlet for said treated gas, and said liquid deodorizing agent having adsorbed said malodorous components is discharged from below said cyclone. The bladed disk is
One or more rectangular blades extending from the center to the ends of the upper or lower surface of the disk with blades;
or,
2. A single or a plurality of rectangular blades extending from the central portion of the upper or lower surface of the bladed disk to the ends thereof, the blades being curved in a direction opposite to the direction of rotation of the bladed disk. deodorizing device according to . 4. The deodorizing device according to claim 3 , wherein the disk with blades has a plurality of projections on the upper surface of the disk with blades. a fermentation tank;
A deodorizing device according to any one of claims 1 to 4 ;
a wastewater treatment device;
The liquid deodorant is activated sludge,
The odorous gas is introduced from the fermenter into the gas-liquid introduction section, and the activated sludge that has adsorbed the odorous components discharged from below the cyclone is biologically treated in the wastewater treatment apparatus. A deodorizing system in which the activated sludge from which the odorous components have been removed by treatment is introduced into the gas-liquid introduction section.

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