JPH11262340A - Livestock manure deodorizer - Google Patents

Abstract

(57) [Problem] To provide a deodorizing device for deodorizing malodor from manure of livestock, which is small in size, easy to manage, and does not require much maintenance cost. SOLUTION: A plurality of adsorbing plate-like bodies 5 each formed by filling an adsorbent obtained by supporting a photocatalyst on a porous granular base material between mesh-like plates are spaced apart in a container 2 in parallel in a vertical direction. Place,
An ultraviolet lamp 6 is disposed between the adsorbing plate-shaped members, and the gas to be treated is passed as an upward flow or a downward flow, thereby performing a deodorizing treatment.

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 a barn or a building for composting livestock manure.

[0002]

2. Description of the Related Art In order to prevent bad odors in cattle, pigs, chickens, and other livestock pens, for example, the air containing a bad odor component is washed with water and then the soil is deodorized. Washing is to deodorize by sending air containing malodorous components from below into a washing tower in which water is supplied in a shower form from above.
Soil deodorization takes place on land about two tennis courts wide.
It digs about a centimeter, fills it with stones, and introduces the air coming out of the washing tower from the bottom side to deodorize.

[0003]

However, in such a method, a large blower is required to send air containing a malodorous component, and a large area is required for deodorizing the soil. Furthermore, in soil deodorization, malodorous components gradually adhere to stones and accumulate, which itself becomes a source of malodor. In the case of soil deodorization, when rain falls due to the open air, the flow of air deteriorates and the deodorization efficiency decreases.

An object of the present invention is to provide a deodorizing apparatus for deodorizing malodors from manure of livestock, which is small in size, easy to manage, and requires little maintenance cost.

[0005]

According to the present invention, there is provided a deodorizing apparatus for livestock manure, comprising a plurality of adsorbing plate-like members each formed by filling an adsorbent obtained by supporting a photocatalyst on a porous granular base material between mesh plates. Are disposed in parallel in the container in an up-down direction at intervals, and an ultraviolet lamp is arranged between the adsorbing plate-shaped members to perform the deodorization treatment by passing the gas to be treated as an upward flow or a downward flow. Features.

[0006] Further, the adsorbing plate has a diameter of 0.3 mm or more.
It is characterized in that it is formed by packing titanium dioxide supported on 8.0 mm activated carbon with a thickness of 5 mm to 30 mm between mesh plates.

Further, the suction plate is detachably mounted in the container.

[0008] Further, the invention is characterized in that the ultraviolet lamps arranged between the adsorbing plate-like members are arranged so that the amount of ultraviolet rays decreases from the introduction side of the gas to be treated toward the exhaust side.

Further, the invention is characterized in that a plurality of deodorizing devices are connected and arranged in series or in parallel.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a deodorizing apparatus 1 according to the present invention comprises a box 2, which is a container. An inlet 3 is provided below the front of the box 2, and an exhaust 4 is provided above the front. Is provided. As shown in FIG. 2, a plurality of suction plate-like members 5 are arranged in parallel in a vertical direction at intervals in the box 2, and an ultraviolet lamp 6 is arranged between the suction plate-like members 5. A door 2a is provided for maintenance and inspection and replacement of the suction plate 5 and the ultraviolet lamp 6 in the box 2.

As shown in FIG. 3, the adsorbing plate 5 is provided with an adsorbent layer 7.
Is sandwiched between mesh-shaped or honeycomb-shaped metal mesh plates 8 and 9 so that the mesh plates 8 and 9 and the entire adsorbent layer 7 can be pulled out of the box 2 (to be detachable).
Although the cartridge type is used as described above, it may be fixed to a box.

The adsorbent layer 7 is made of an adsorbent in which a photocatalyst is supported on a granular porous material which is a porous granular substrate. Examples of the porous material include activated carbon, zeolite, alumina oxide, silica gel and the like. Can be used. As the photocatalyst, titanium dioxide and zinc oxide are preferable.

The diameter of the granular porous material is from 0.3 mm to 8.
When the diameter is less than 0.3 mm, the ventilation resistance is large, and when the diameter is 8.0 mm or more, the surface area is small, which is not preferred. On the other hand, the diameter of the photocatalyst is 1
When the diameter is less than 1 nm, the porous body is closed, and when the diameter is 10 nm or more, it cannot adhere to the porous body, which is not preferable.

The photocatalyst is supported on the surface of the granular porous body in a weight ratio of 10% to 80%. 10%
If it is less than 80%, the amount of the photocatalyst is small, and if it exceeds 80%, the porous body is covered, which is not preferable.

The thickness of the adsorbent layer 7 is such that the ultraviolet light from the ultraviolet lamp reaches the inside of the layer, does not give a large resistance to the gas to be processed passing therethrough, and secures a necessary amount of adsorption. Required thickness. Therefore, the thickness of the adsorbent layer 7 is 5 mm to 3 mm depending on the diameter of the porous body.
0 mm is preferred.

The ultraviolet lamps 6 are arranged every other stage between the adsorbing plate-like members 5 arranged in multiple stages, and irradiate the adsorbing plate-like members 5 above and below the adsorbing plate-like members 5. It may be arranged between each step of the body 5.

As the ultraviolet lamp 6, for example, a low-pressure ultraviolet lamp or a high-pressure ultraviolet lamp is used, and the amount of ultraviolet light emitted is preferably 1 mW per 1 cm ² of the porous body. The amount of ultraviolet rays may be the same in each of the arranged stages, or may be large at the intake port 3 side and reduced toward the exhaust port 4 side as shown in FIG. Therefore, the number of ultraviolet lamps may be reduced toward the exhaust port side, or a lamp with a smaller amount of radiated ultraviolet rays may be used toward the exhaust port side.

The deodorizing apparatus 1 has a blower 10 therein, and a gas to be treated (odorous gas) is sucked from an intake port 3.
After passing through each adsorption plate-like body 5 in a direction perpendicular to its surface as an upward flow and being deodorized, the deodorized gas is discharged from the exhaust port 4. The flow of the gas to be treated may be taken in from above, become a downward flow, and be discharged from below.

Odorous substances (bad odor components) in the gas to be treated are adsorbed on the porous body. On the other hand, when the photocatalyst carried on the surface of the porous body is irradiated with ultraviolet rays from an ultraviolet lamp, OH radicals are generated, which decompose the odorous substance adsorbed on the porous body. Therefore, the porous body is constantly regenerated and the amount of the odorous substance adsorbed is hard to reach a saturated state, that is, a breakthrough state. When replacement is necessary, all or some of the suction plates may be pulled out and replaced.

It should be noted that the plurality of adsorbing plate-like members arranged in multiple stages do not need to be all the same, and some of the plurality of stages differ from other adsorbing plate-like members depending on the odorous substance of the gas to be treated. It may be made of a porous granular substrate and / or a photocatalyst. Further, partially different granular base materials or photocatalysts may be used in one adsorption plate-like body 5.

The deodorizing device 1 of the present invention may use other shapes such as a cylindrical container in addition to a box-shaped container.
The positions and shapes of the intake and exhaust ports can be changed accordingly. Also, depending on the amount of the gas to be treated, the deodorizing device 1
As a unit, several units may be used, and these may be connected in series or in parallel for processing. Furthermore, the deodorizing device 1 of the present invention may be installed outside the livestock bar, not only inside the livestock bar (FIG. 5).

The deodorizing device 1 of the present invention can be installed for deodorizing a composting building 12 for composting livestock manure as shown in FIG. In FIG. 6, a plurality of units (three units in FIG. 6) of the deodorizing device 1 are provided outside the composting building 12.
a to 1c are installed, and the odorous gas is supplied to each deodorizing device 1a to 1c.
Are supplied and processed in parallel. Note that the deodorizing device may be installed inside the composting building 12, or a plurality of deodorizing devices may be connected in series.

The deodorizing device of the present invention may be used together with other types of deodorizing devices such as a washing tower.

[0024]

EXAMPLES <Example 1> rectangular parallelepiped closed type barn consisting building as shown in FIG. 5 accommodates the 10 pigs (the vertical 10 m, horizontal 20 m, height 3m, volume 600 meters ³⁾ inside, manure minute The animals were taken out of the barn without releasing, and the floor was washed with water. One deodorizing device 1 of the present invention (one unit) was disposed in such a barn. In the deodorizer 1, an adsorbent layer (thickness: 15 mm) in which activated carbon having an average diameter of 2 mm and titanium dioxide having an average diameter of 7 nm are supported on the surface at a weight ratio of 20% to a thickness of 1 m is provided.
adsorbed plate-shaped body (length 627 mm, width 420 mm, adsorption area 5 m) sandwiched between two stainless steel mesh plates
² ) were arranged in nine steps at intervals of 100 mm.

A low-pressure mercury lamp of 20 W (ultraviolet ray amount) is provided between the first and second stages, the third and fourth stages, the fifth and sixth stages, the seventh and eighth stages of the adsorbing plate. 96W) were arranged four by four.

With a blower in the deodorizing device, 20 m ³ /
Air in the barn (gas to be treated)
All air in the barn was circulated twice a time. The velocity of the gas to be processed passing through the adsorption plate is 1.27.
m / sec.

As a result of the treatment for 3 hours, the concentrations of the malodorous components were as shown in Table 1. In Table 1, the unit is ppm, MM means methyl mercaptan, and TMA means trimethylamine.

[0028]

[Table 1]

Example 2 2000 kg of pig manure to be composted was placed in a closed composting building (capacity 400 m ³ ) as shown in FIG. 6, and the same deodorization as in Example 1 was carried out outside the composting building. Three units were arranged, and the gas to be treated from the composting building was supplied to each unit in parallel at an air flow rate of 5 m ³ / min to perform deodorization treatment.

As a result, the concentrations of the malodorous components were as shown in Table 2. In Table 2, the unit is ppm, and MM means methyl mercaptan.

[0031]

[Table 2]

From Tables 1 and 2, the deodorizing apparatus of the present invention is
It can be seen that the offensive odor component is well deodorized.

[0033]

According to the deodorizing apparatus of the present invention, it is not necessary to replace or regenerate the porous granular substrate or the number of times of the replacement is small, and therefore, the maintenance cost is not so high.

Further, since the suction plate-like body is detachably mounted in the cartridge body in a cartridge type, replacement of the porous granular base material is easy and maintenance and management are easy.

Further, since the amount of ultraviolet rays from the ultraviolet lamps disposed between the adsorbing plate members decreases from the introduction side of the processing gas toward the discharge side, more efficient deodorization processing is performed. Low power consumption is required.

Further, when a plurality of deodorizing devices are connected and arranged in series or in parallel, it becomes possible to perform deodorizing treatment in a larger livestock barn or a composting building.

[Brief description of the drawings]

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

FIG. 2 is a sectional view.

FIG. 3 is a cross-sectional view of the suction plate.

FIG. 4 is a cross-sectional view of another deodorizing device of the present invention.

FIG. 5 is a view showing a state in which the deodorizing device of the present invention is arranged in a livestock barn.

FIG. 6 is a view showing a state in which the deodorizing device of the present invention is arranged outside a composting building.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 (1a-1c) Deodorizing device 2 Box (container) 3 Inlet 4 Exhaust port 5 Adsorbing plate 6 Ultraviolet lamp 7 Adsorbent layer 8 Mesh-like plate 9 Mesh-like plate 10 Blower 11 Livestock house 12 Composting building

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI B01D 53/86 ZAB B01D 53/36 J B01J 35/02 ZABH

Claims (5)

[Claims] 1. A plurality of adsorbing plate-like bodies each formed by filling an adsorbent obtained by supporting a photocatalyst on a porous granular base material between mesh-like plates and arranged in parallel in a container at intervals in a vertical direction. A deodorizing device for livestock manure, wherein an ultraviolet lamp is arranged between the adsorbing plate-shaped members and the gas to be treated is passed as an upward flow or a downward flow to perform a deodorization treatment. 2. The adsorption plate-like body having a diameter of 0.3 mm to 8.0.
5 mm thick activated carbon with titanium dioxide supported
The deodorizing device for livestock manure according to claim 1, wherein the deodorizing device is filled between mesh plates to a size of 30 mm to 30 mm. 3. The deodorizing device for livestock manure according to claim 1, wherein the suction plate is detachably mounted in the container. 4. The method according to claim 1, wherein the ultraviolet lamps arranged between the adsorbing plates are arranged such that the amount of ultraviolet light decreases from the introduction side of the gas to be treated toward the discharge side. 2. The deodorizing device for livestock manure according to the above. 5. The deodorizer for livestock manure according to claim 1, wherein a plurality of deodorizers are connected in series or in parallel.