JP3083732B2 - Deodorizing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing apparatus for removing malodors generated during fermentation of organic matter such as garbage, livestock dung, human waste, and production of compost.

[0002]

2. Description of the Related Art For example, as a means of treating garbage generated from general households, inns, hotels, and other various facilities, such garbage is supplied to a fermentation tank, and the garbage is stirred and fermented in the fermentation tank for a predetermined period. Composting has been done. Such a gas generated when fermenting garbage in a fermenter is accompanied by a bad odor and impairs environmental health.

[0003] In order to remove such bad smell,
2. Description of the Related Art Gas with a bad odor generated in a fermenter is led to a deodorizing device, and deodorizing is performed in the deodorizing device.
Conventionally, there are various types of deodorizing devices, but as a device capable of economically deodorizing a large amount of gas, soil is used as a deodorizing agent, and odor components such as ammonia (N
An apparatus for deodorizing by adsorbing N in H ₃ ) to soil is known.

FIG. 2 is a schematic vertical sectional view showing an example of a conventional deodorizing device. As shown in FIG.
A deodorizing tank 1 made of concrete, a main pipe 2 provided at a lower portion of the deodorizing tank 1 and extending in the longitudinal direction of the deodorizing tank 1 for guiding odor gas generated from the fermentation tank 6 into the tank, and a deodorizing tank from the main pipe 2 1, a plurality of gas ejection pipes 3 having a large number of gas ejection ports 3a, which are branched in the width direction, and a lower portion thereof, that is, on a bottom surface of the deodorization tank 1 and the main pipe 2 so as to support the main pipe 2 and the gas ejection pipes 3. A crushed stone layer 4 spread over the gas ejection pipe 3 with a predetermined thickness, and a black clay layer 5 having a predetermined thickness formed above the crushed stone layer 4.

The odor gas generated from the fermentation tank 6 is guided by a blower 7 through a conduit 8 to a main pipe 2 and a gas ejection pipe 3 provided at a lower portion of the deodorization tank 1, through a gas ejection port 3 a of the ejection pipe 3. It is squirted into the crushed stone layer 4. The odor gas ejected into the crushed stone layer 4 rises up the black soil layer 5 and is exhausted from the upper part thereof, while the odor component in the gas is adsorbed by the black soil layer 5. The adsorbed odor component is treated as a nutrient source for microorganisms present in the soil.

[0006]

The above-mentioned conventional deodorizer has the following problems. The odor gas generated from the fermenter 6 contains a large amount of water vapor due to heat generated in the fermentation process of garbage. Therefore, the lower part of the black clay layer 5 absorbs the water vapor in the odor gas containing a large amount of water vapor, which is blown into the black clay layer 5 through the crushed stone layer 4,
It becomes moist with a large amount of water. As a result, the lower part of the black soil layer 5 is deteriorated in air permeability, and becomes in an anaerobic state in which the habitat of microorganisms in the soil is poor.

[0007] In the soil deodorization, it is necessary to control the soil to a moisture permeability of about 30% with good air permeability in order to perform efficient deodorization. However, in the conventional apparatus, as described above, the lower part of the black soil layer 5 is in a wet state containing a large amount of water, and the upper part of the deodorization tank 1 is open, so that soil moisture is reduced due to rainfall. Become excessive,
On the other hand, soil management is not easy, for example, when the weather is fine, the water evaporates and the soil moisture becomes insufficient. Therefore, it was necessary to perform the stirring operation of the soil several times a year.

[0008] The microorganisms in the soil require a period of acclimation of about 1 to 3 weeks until their habitat is prepared, and during this acclimation period, no deodorizing effect can be expected. Therefore, the soil is required to have a capacity to adsorb a sufficient odor, an environment where microorganisms can inhabit, and a backup for deodorization during the acclimation period of microorganisms.

Accordingly, an object of the present invention is to solve the above-mentioned problems, and to have a sufficient adsorption capacity when adsorbing an odor component in a gas to a deodorant, and to have an excellent microorganism habitat. It is an object of the present invention to provide an apparatus capable of backing up deodorization during a period of acclimation of microorganisms and performing deodorization efficiently and economically.

[0010]

The deodorizing device according to the present invention comprises:
A deodorization tank whose upper end is closed by a top wall, and a plurality of vertical partition walls that divide the inside of the deodorization tank into a plurality of chambers in the left-right direction,
A plurality of deodorization chambers formed in the deodorization tank in the left-right direction by the plurality of partition walls, a perforated plate provided at a lower portion of the deodorization chamber at a predetermined interval from a bottom wall thereof, and A deodorizing layer formed at a predetermined distance from the top wall, a gas inlet provided in the one-side deodorizing tank, and a gas discharge path provided adjacent to the other-side deodorizing chamber. Before
The deodorizing layer is formed of bark or soil.
At the end of the deodorizing room or at the lower part of the gas exhaust passage,
On either side, an activated carbon layer consisting of activated carbon is formed
Cage, the lower portion of the partition walls forming the one end deodorization chamber, wherein are lower is opened from a perforated plate, the upper portion of the partition walls forming the deodorization chamber adjacent said one end deodorization chamber, from the surface of the deodorizing layer The upper part is open, and thereafter the lower or upper part of the partition is alternately opened for each deodorizing chamber to form a gas passage, and the gas passage communicates with the gas discharge passage, and the gas passage is formed from the gas inlet. The odor gas blown into the one-side deodorizing chamber is removed of its excess moisture while passing downward through the deodorizing layer, and is deodorized while passing through the deodorizing layer of the next deodorizing chamber. It is characterized in that the gas is discharged from the deodorizing chamber to the atmosphere through a gas discharge passage provided adjacent to the deodorizing chamber.

[0011]

According to the present invention, the odorous gas blown from the gas inlet into the deodorizing chamber on one end side is removed of excess moisture while passing downward through the deodorizing layer made of bark, and then, While passing through each deodorizing chamber, it is deodorized by a deodorizing layer composed of bark and then released into the atmosphere. As described above, the odorous gas first passes downward in the deodorizing layer of the one-side deodorizing chamber, and passes therethrough in a downward flow, so that excess moisture in the odorous gas is easily adsorbed by the bark forming the deodorizing layer. In addition, the anaerobic state due to the increase in water in the soil is eliminated, and the habitat of microorganisms is prepared.

[0012]

Next, the present invention will be described with reference to the drawings. FIG. 1 is a schematic vertical sectional view showing a first embodiment of the device of the present invention. As shown in the drawing, the upper end of the deodorization tank 1 is closed by a top wall 8. In the deodorization tank 1,
A plurality of vertical partition walls 10 for dividing the inside of the tank into a plurality of chambers in the left-right direction are attached, and a plurality of deodorization chambers 11a, 11b, 11c are formed in the deodorization tank 1 in the left-right direction by the partition walls 10. Is formed. At the lower part of the deodorizing chambers 11a, 11b, 11c, a perforated plate 12 is attached at a predetermined interval from the bottom wall 9 thereof.

A top wall 8 is provided on the perforated plate 12 of the deodorizing chambers 11a and 11b.
With a predetermined interval between them, the deodorizing layer 13a, 1
A deodorizing layer made of activated carbon is formed on the perforated plate 12 of the deodorizing chamber 11c at a predetermined interval from the top wall 8.
13c is formed. The deodorized layers 13a and 13b are formed by the bark of a hardwood that has been crushed to about 30 mm and sufficiently fermented. In addition, you may form with soil like black soil instead of bark.

A gas inlet 14 is provided in the upper part of the side wall of the one end side deodorizing chamber 11a.
Is connected, and the odor gas generated from the fermentation tank 6 is supplied into the deodorization tank 1 through the gas inlet 14 by the blower 7 through the conduit 15. A gas discharge path 16 is provided adjacent to the other end side deodorizing chamber 11c.

The upper end of the partition wall 10 forming the one end side deodorizing chamber 11a is fixed to the top wall 8, and the lower end thereof is located on the perforated plate 12, so that the partition wall 10 is opened below the perforated plate 12. The lower end of the partition wall 10 forming the deodorizing chamber 11b adjacent to the one end side deodorizing chamber 11a is fixed to the bottom wall 9, and the upper side of the deodorizing layer 13 is open. The upper end of the partition wall 10 forming the other end side deodorizing chamber 11c adjacent to the deodorizing chamber 11b is fixed to the top wall 8, and the lower end is located on the perforated plate 12, so that the partition wall 10 is opened below the perforated plate 12. I have. In this manner, the lower or upper part of the partition 10 is opened alternately for each deodorizing chamber 11, whereby the lower gas passages 17a, 17b
And an upper gas passage 18 is formed. Deodorizing room at the other end
The lower gas passage 17b of 11c communicates with the gas discharge passage 16.

The odor gas blown from the gas inlet 14 into the deodorizing chamber 11a on one end side passes downward through the deodorizing layer 13a made of bark in the deodorizing chamber 11a, while excess moisture in the odor gas is removed. Removed. The odor gas from which excess moisture has been removed in this way is guided from the lower gas passage 17a to the next adjacent deodorizing chamber 11b, and passes upward through the deodorizing layer 13b made of bark in the deodorizing chamber 11b. Then, odors such as ammonia are removed. At this time, the deodorizing layer 13b made of bark in the deodorizing chamber 11b is maintained in a stable environment where microorganisms can easily inhabit, because the moisture in the odor gas passing therethrough is constant.

Next, the odor gas is guided from the upper gas passage 18 to the other end side deodorizing chamber 11c, and passes downward through the deodorizing layer 13c made of activated carbon in the deodorizing chamber 11c during the period of acclimatization of microorganisms. Variations in the deodorizing effect are eliminated. The gas which has been completely deodorized in this way is supplied to the lower gas passage 17b.
From the atmosphere through a gas discharge path 16 adjacent to the air. The deodorizing layer 13c made of activated carbon in the deodorizing chamber 11c
Deodorizing layers 13a and 13b made of bark in deodorizing rooms 11a and 11b
However, considering that the deodorizing effect cannot be obtained due to the acclimatization period, it is provided as a backup for safety. Also, the provision of the deodorizing layer 13c made of activated carbon is effective in areas where odor emission standards are stricter or when the frequency of bark replacement is minimized.

FIG. 2 is a schematic vertical sectional view showing a second embodiment of the apparatus of the present invention. As shown in FIG. 2, in the apparatus of the second embodiment, the deodorizing layer in the other end side deodorizing chamber 11c is provided.
The device of the first embodiment is different from the device of the first embodiment in that a bar 13c is also made of bark, and a deodorizing layer 13d made of activated carbon is provided below the gas discharge passage 16.

In the apparatus according to the second embodiment, the odor gas blown into the deodorizing chamber 11a from the gas inlet 14 into the one-end deodorizing chamber 11a while passing downward through the deodorizing layer 13a made of bark in the deodorizing chamber 11a. The excess moisture in the odor gas is removed, and then the deodorizing layers 13b and 13c composed of bark in the deodorizing chambers 11b and 11c.
While passing through the deodorizing layer 13d made of activated carbon provided at the lower part of the gas discharge path 16, the dispersion of the deodorizing effect during the microorganism acclimation period is eliminated. The gas which has been completely deodorized in this way is released to the atmosphere through the gas discharge passage 16.

For example, the thickness of the deodorizing layers 13a and 13b made of bark in the deodorizing chambers 11a and 11b is set to 1 m, and the thickness of the deodorizing layer 13c made of activated carbon in the deodorizing chamber 11c is set to 300 mm. As a result of operating at a gas wind speed of 0.2 m / s or less, regulated odor components such as ammonia could be efficiently removed from the odor gas.

Since the upper end of the deodorizing tank 1 is closed by the top wall 8, the soil moisture becomes excessive due to rainfall,
In addition, the amount of water does not evaporate during the fine weather, so that the amount does not become too small. Therefore, it is not necessary to perform the work of stirring the soil, and the management thereof is easy.

[0022]

As described above, according to the present invention,
The odorous gas blown into the one-side deodorizing chamber 11a from the gas inlet 14 passes through the deodorizing layer 13a made of bark in the deodorizing chamber 11a downward, and excess moisture in the odorous gas is removed. Efficient deodorization can be performed. Therefore, the bark or soil as a deodorant can be easily controlled to a moisture content with good air permeability, and therefore, deodorization can be performed efficiently and economically without the necessity of stirring the deodorant. And an industrially useful effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic vertical sectional view showing a first embodiment of the device of the present invention.

FIG. 2 is a schematic vertical sectional view showing a second embodiment of the device of the present invention.

FIG. 3 is a schematic vertical sectional view showing an example of a conventional soil deodorizing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Deodorizing tank 2 Main pipe 3 Gas ejection pipe 4 Crushed stone layer 5 Black soil layer 6 Fermentation tank 7 Blower 8 Top wall 9 Bottom wall 10 Partition wall 11a Deodorizing room 11b Deodorizing room 11c Deodorizing room 12 Perforated plate 13a Deodorizing layer 13b Deodorizing layer 13c Deodorizing layer 13d Deodorizing layer 14 Gas inlet 15 Conduit 16 Gas outlet 17a Lower gas passage 17b Lower gas passage 18 Upper gas passage

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B01D 53/38 B01D 53/34 B01D 53/81

Claims (1)

(57) [Claims] 1. A deodorizing tank having an upper end closed by a top wall, a plurality of vertical partition walls dividing the inside of the deodorizing tank into a plurality of chambers in a left-right direction, and a left and right inside of the deodorizing tank by the plurality of partition walls. A plurality of deodorizing chambers formed in the direction, a perforated plate provided at a predetermined distance from the bottom wall at a lower portion of the deodorizing chamber, and a predetermined distance between the top wall on the perforated plate. The formed deodorizing layer, a gas introduction port provided in one end side deodorizing tank, and a gas exhaust passage provided adjacent to the other end side deodorizing chamber, the deodorizing layer is formed of bark or soil. And said
In the deodorizing room at the other end or below the gas exhaust passage
An activated carbon layer consisting of activated carbon is formed on either one
And, the lower portion of the partition walls forming the one end deodorization chamber, wherein are lower is opened from a perforated plate, the upper portion of the partition walls forming the deodorization chamber adjacent said one end deodorization chamber, the surface of the deodorizing layer The upper portion is opened, and thereafter the lower or upper portion of the partition is alternately opened for each deodorizing chamber to form a gas passage, and the gas passage communicates with the gas discharge passage, and The odor gas blown into the one-side deodorizing chamber is removed of excess moisture while passing downward through the deodorizing layer, and is deodorized while passing through the deodorizing layer of the next deodorizing chamber. A deodorizing device characterized in that the gas is discharged from the side deodorizing chamber to the atmosphere through a gas discharge passage provided adjacent to the side deodorizing chamber.