JP6727766B2 - Livestock environment conservation equipment - Google Patents

Description

INDUSTRIAL APPLICABILITY The present invention efficiently ventilates and discharges malodorous substances such as manure and urine from the inside of a livestock house with a closed opening (eg, a windowless livestock house) while preventing the malodorous substances from spreading outside the livestock house. Concerning livestock environment conservation equipment to be carried out.

As the residential area of the inhabitants expands to the suburbs and houses and livestock stalls are mixed, and the scale of livestock is increased, the livestock environment protection for the inhabitants such as measures against offensive odors around livestock is necessary for coexistence of homes and livestock. It is an urgent issue. Therefore, for example, a windowless barn, which has a structure in which a malodorous component derived from a barn does not easily diffuse outside the barn, has been attracting attention as one of the measures against the malodor.
On the other hand, in the windowless livestock shed, the stench generated from offensive odors such as manure accumulates in the structure. Conservation of the livestock environment is important from the viewpoint of maintaining animal health (disease prevention) and improving productivity.

Therefore, as a device for ventilating the inside of a windowless barn without diffusing a foul odor into the surroundings, for example, in Patent Document 1, a deodorizing room installed adjacent to the outside of the windowless barn and disposed inside the deodorizing room. Exhaust deodorization of a foul-smelling facility equipped with a dust removal device that removes dust contained in the exhaust discharged from the ventilation fan of a windowless barn and a deodorant material layer that is placed inside the deodorization chamber to deodorize the exhausted exhaust A device is disclosed. Here, the dust removing device is disposed on the downstream side of the ventilation fan and has a dust removing main body provided with a plurality of vent holes through which exhaust air discharged from the ventilation fan passes, and a dust removing main body provided between the dust removing main body and the ventilation fan. Has a first sprinkler device for uniformly sprinkling water on its side surface, and a water tank provided below the dust removing main body for collecting the sprinkled water and storing it as water for the first sprinkler device. ing. The deodorizing material layer is formed by laminating deodorizing materials including non-heat-treated coconut husk chips to which organic substances and microorganisms have been added.

JP-A-2007-190534

However, the exhaust deodorizing device described in Patent Document 1 has a problem that dust accumulates in the water storage tank when it continues to operate for a long period of time, and a problem that deodorizing material decreases due to aging of coconut husk chips. For this reason, regular maintenance (removal of dust in the water tank, replacement of coconut husk chips) must be performed, and the maintenance and management of the exhaust deodorization device is a burden for stable operation of the exhaust deodorization device. There is a problem that becomes large.

The present invention has been made in view of the above circumstances, and flexibly responds to the scale of offensive odors generated in a livestock house with an opening closed, while preventing the malodor from spreading outside the livestock house. The purpose of the present invention is to provide a livestock environment conservation facility that can carry out goods and ventilate the livestock house to maintain the sanitary condition inside the livestock house at low cost and to maintain and manage the equipment at low cost. ..

The livestock environment conservation equipment according to the present invention in accordance with the above-mentioned object, a malodorous substance originating from livestock, which is generated in a livestock house with an opening closed, is carried out to the outside of the livestock store while preventing the spread of the malodorous food product and stored. A processing device,
A part of the internal air in the livestock house is taken out to the outside of the livestock house, and the first granular processed material that adsorbs a malodorous substance in the internal air is irradiated with sunlight, so that the surface of the first granular processed material is exposed. first by a photocatalyst, by performing the sterilization process while the first deodorizing decompose the adsorbed malodorous substance, and circulating air cleaning device back into該畜the house as clean air which is carried on,
While blowing the outside air taken in from the outside of the livestock shed into the livestock shed, another part of the internal air in the livestock shed is taken out and the second granular treatment material for capturing the malodorous substances in the internal air is used as the sun. light is irradiated, the second photocatalyst carried on the surface of the second granular treatment material, by performing a sterilization process while the second deodorizing decomposing the captured malodorous substances, the該畜sha It has a ventilating device that discharges to the outside.

In the livestock environment conservation facility according to the present invention, since the opening of the livestock building is closed, even if a bad smell is present in the livestock building, it is possible to prevent the bad smell from spreading (leaching) to the surroundings. Then, the malodorous substance processing device can carry out the malodorous substance from the inside of the barn and store the malodorous substance outside the barn while preventing the malodorous substance from being diffused. It is possible to suppress the bad smell of. In addition, the circulation type air purifier can reduce the malodorous substances contained in the air inside the livestock house and prevent the generation and multiplication of bacteria, maintain the sanitary condition inside the livestock house, and prevent the infection of pathogens by air. It becomes possible to prevent the onset of disease. Furthermore, since the ventilator allows the outside air to be taken into the livestock shed and a part of the internal air inside the livestock shed can be exhausted, the state of the internal air inside the livestock shed (for example, carbon dioxide concentration) can be made similar to the outside air. It becomes possible to maintain.
Here, the first deodorizing treatment by the circulating air cleaning device uses the first photocatalyst activated by sunlight, and the second deodorizing treatment by the ventilation device uses the second photocatalyst activated by sunlight. Therefore, the running cost of the equipment can be reduced. Further, the malodorous substance is decomposed through the catalyst, and the decomposed product is mixed into the internal air and discharged to the outside of the livestock house and does not remain inside the livestock house, so that the maintenance cost and management cost of the facility can be reduced.

(A) is a south side view of the livestock environment conservation equipment according to one embodiment of the present invention, (B) is a north side view of the same livestock environment conservation equipment, (C) is a P-P arrow view of (A). , (D) is a Q-Q arrow view of (A). It is a block diagram of the same livestock environment conservation equipment. It is a block diagram by the side of the exhaust chamber of the same livestock environment conservation equipment. It is explanatory drawing of a deodorizing sterilization element. It is a partially expanded view of a second deodorizing filter and a malodorous adsorbent. It is a graph which shows the comparison result of the number of bacteria adhering to the floor surface in the test group and the control group of the example. It is a graph which shows the comparison result of the floating bacteria and the number of floating particles in the test group and control group of an Example. It is a graph which shows the comparison result of the odor density in the test group of an Example, and a control group. It is a graph which shows the change of the ammonia density|concentration during the breeding|raising period in the test group and control group of an Example. It is a graph which shows the change of the viable cell count of the general bacteria adhered in the windowless barn during the breeding period in the test group and the control group of the example.

Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.
As shown in FIGS. 1(A) to 1(D) and FIG. 2, a livestock environment conservation facility 10 according to an embodiment of the present invention occurs in a windowless livestock house 11, which is an example of a livestock house with an opening closed. A malodorous substance processing device 13 that carries out and stores a malodorous substance originating from livestock, for example, excrement 12 (see FIG. 3) outside the windowless livestock house 11 while preventing the diffusion of the malodorous substance from the inside into the windowless livestock house 11. , A part of the internal air inside the windowless barn 11 is taken out of the windowless barn 11 and is deodorized by the first photocatalyst 14 (see FIG. 4) that is activated by sunlight (first deodorization process). 2) and returns it to the inside of the windowless barn 11 as purified air.
Here, the deodorization of the malodorous substance contained in the internal air is carried out by activating the activated first photocatalyst 14 to oxidize active oxygen produced by reducing oxygen in the air and hydroxyl groups contained in water in the air. This is due to the oxidative decomposition of malodorous substances due to the generated hydroxyl radicals. Therefore, when bacteria or viruses are present in the internal air, the proteins constituting the bacteria or viruses are oxidatively decomposed as well as the deodorizing (oxidative decomposition) of the malodorous substance. Therefore, bacteria and viruses in the purified air are inactivated (the purified air is sterilized).

Further, the livestock environment conservation facility 10 is provided at one end side of the windowless livestock building 11 and is provided at an intake chamber 18 for taking in outside air from the outside of the windowless livestock housing 11 and at the other end side of the windowless livestock housing 11 for taking in outside air. While blowing into the windowless barn 11, another part of the internal air in the windowless barn 11 is taken out, and a deodorizing process (second deodorizing process) is performed using a second photocatalyst 16 (see FIG. 5) that is activated by sunlight. 2), the ventilation device 17 is provided with an exhaust chamber 20 that discharges the gas to the outside of the windowless barn 11 through the discharge port 19.
Here, the windowless barn 11 is provided, for example, in a region excluding both sides in the longitudinal direction of the foundation 21 constructed with the longitudinal direction oriented in the east-west direction. Further, on one end side in the longitudinal direction of the foundation 21, an intake chamber 18 whose outer peripheral side and upper surface side are closed is provided so as to be connected to one end side of the windowless livestock building 11 via a partition wall 22, and one end side of the intake chamber 18 is provided. The wall surface 43 is provided with, for example, two openings 44 and 45 for taking in outside air. On the other hand, on the other end side in the longitudinal direction of the foundation 21, an exhaust chamber 20 whose outer peripheral side and upper surface side are closed is provided via the other end side of the windowless livestock building 11 and a partition wall 23, and the other end side of the exhaust chamber 20. A plurality of discharge ports 19 are provided on the wall surface 49 of the. The details will be described below.

As shown in FIGS. 2 and 3, the offensive odor treatment device 13 is provided under the floor 24 of the windowless livestock shed 11, and stores (collects) the excreted feces and urine 12 and one end of the underfloor pit 25. From the side (intake chamber 18) to the other end (exhaust chamber 20 side) by flushing the discharged excrement 12 from the other end of the underfloor pit 25 and the underfloor pit 25. It has a closed storage tank (not shown) that collects and stores the discharged excrement 12.
Here, the floor 24 is arranged in the windowless livestock shed 11 so that the height position of the floor 24 coincides with that of the upper surface of the foundation 21, and is made of a mesh plate having dispersed openings 24a. By using the mesh plate, excreted urine can be easily accommodated in the underfloor pit 25, and excreted feces can be dropped and accommodated in the underfloor pit 25 through the opening 24a.
Further, the cleaning/discharging means 26 is provided with a cleaning water tank 27 arranged on the upper side in the intake chamber 18 and an opening/closing valve (not shown), and utilizes the head to supply the cleaning water from the cleaning water tank 27 to the underfloor pit 25. Has a water guide pipe 28 supplied to one end of the water supply pipe and a water supply pipe (not shown) provided with a water supply pump for supplying the wash water to the wash water tank 27. By moving the manure 12 together with the wash water in the underfloor pit 25, it is possible to prevent dust generation due to the cleaning and movement in the underfloor pit 25.

As shown in FIGS. 1(A), 1(B), and 2, a plurality of circulation type air cleaning devices 15 are arranged at intervals along the longitudinal direction of the windowless barn 11, for example.
Then, as shown in FIG. 3, the circulation-type air cleaning device 15 includes a hooded fan 29 (an example of a first exhaust means) that takes out a part of the internal air inside the windowless livestock shed 11 to the outside of the windowless livestock shed 11. A dust removal filter 30 for removing dust in the internal air taken out by the fan 29 with a hood, and a dust removal filter 30 which is provided outside the windowless livestock shed 11, for example, on the roof 31 of the windowless livestock shed 11, and taken out. A first deodorizing filter 32 that performs deodorizing and sterilizing the internal air to convert it into purified air, and a purified air introduction pipe 33 that returns the purified air discharged from the first deodorizing filter 32 into the windowless livestock shed 11 (purified air blowing And an example of a means). Reference numeral 34 is an internal air lead-out pipe that allows the internal air that has passed through the dust removal filter 30 to flow into the first deodorizing filter 32.

The first deodorizing filter 32 includes a plurality of deodorizing and sterilizing elements 37 including an upstream processing unit 35 and a downstream processing unit 36 that are bent at the center and are inclined with respect to the flow direction of the internal air, and a plurality of deodorizing filters. It has a box 38 that houses the sterilization element 37.
Here, the upstream processing section 35 and the downstream processing section 36 of the deodorization sterilization element 37 have the same width, and when the deodorization sterilization element 37 is housed in the box 38, the deodorization sterilization adjacent to each other along the flow direction of the internal air is performed. The ends of the element 37 are in contact with (connected to) each other. The box body 38 is installed on the south side surface of the roof 31 of the windowless livestock building 11 with the longitudinal direction oriented in the east-west direction, and the connection ports for the purified air introduction pipe 33 and the internal air derivation pipe 34 are provided on both longitudinal end faces, respectively. Has been formed. Further, the upper surface and the south side surface of the box body 38 are made of transparent members that allow sunlight to efficiently pass therethrough. Then, when the upstream processing unit 35 (downstream processing unit 36) is inserted into the box body 38, between the inner surface of the box body 38 and the outer peripheral surface of the upstream processing unit 35 (downstream processing unit 36). The width of the upstream processing unit 35 (downstream processing unit 36) is adjusted with respect to the inner width of the box body 38 so that a small gap is formed, and the deodorizing sterilization element is adjusted with respect to the inner height of the box body 38. By adjusting the height between the central portion of 37 and the upstream end portion (downstream end portion), between the inner surface of the box body 38 and the outer peripheral portion of the upstream processing portion 35 and the inner surface of the box body 38. A gas seal member (not shown) can be inserted between each of these and the outer peripheral portion of the downstream processing unit 36. With such a configuration, the internal air introduced into the box body 38 can surely sequentially pass through the deodorizing and sterilizing element 37.

As shown in FIG. 4, the upstream processing unit 35 (similarly to the downstream processing unit 36) includes a first flat plate-like breathable container 39 arranged so as to intersect with the flow direction of the internal air, and a first flat plate. And a first granular processing material 40 which is housed in the air-permeable container 39 and which adsorbs a malodorous substance contained in the internal air passing therethrough and decomposes it by the first photocatalyst 14 carried on the surface. .. Therefore, the gas seal member is inserted between the outer peripheral surface of the first flat plate-like breathable container 39 and the inner surface of the box body 38.
The first granular processing material 40 is an adsorbent having pores (not shown) communicating with the inside thereof, for example, activated carbon, zeolite, sepiolite, silica gel powder, each having a predetermined shape (for example, a diameter of 0.5 to 4 mm). , A columnar shape having a length of 1.5 to 6 mm, or a granular shape having an outer diameter of 0.5 to 4 mm), any one or a combination of two or more of activated carbon pellets, zeolite pellets, sepiolite pellets, and silica gel pellets. Composed of. Then, by spraying the first photocatalyst 14 (for example, anatase type titanium dioxide) onto the first granular treatment material 40, the first photocatalyst 14 is supported on the surface of the first granular treatment material 40. ing.
Here, the particle size is adjusted (the particle size is adjusted) so that the size of the first granular material 40 falls within a certain range, so that the first granular material 40 is transferred to the first flat plate-like breathable container 39. When stored (filled) inside, a gap can be efficiently formed between the first granular processing materials 40.

The first flat plate-like breathable container 39 can be formed of, for example, aluminum or an aluminum alloy, and the surface of the first flat plate-like breathable container 39 is subjected to an alumite treatment or a boehmite treatment. preferable. Thereby, even if the malodorous substance has a corrosive property, it is possible to prevent the first flat plate-like breathable container 39 from being damaged. In addition, a mesh plate-shaped partition wall 41 is provided vertically and horizontally in the first flat plate air-permeable container 39, and is divided into a plurality of sections in a plan view. By dividing the inside of the first flat plate-like air permeable container 39 by the partition wall 41, the stored first granular treatment material 40 moves downward even if the first flat plate-like air permeable container 39 is tilted. Therefore, the first granular processing material 40 can be uniformly stored in the first flat plate-like air permeable container 39.

The mesh spacing of the first flat plate-like breathable container 39 depends on the size of the first granular treatment material 40 (to prevent the first granular treatment material 40 from flowing out of the first flat sheet breathable container 39). ) Set. Further, the mesh spacing of the partition wall 41 is also set so that the first granular processing material 40 does not pass through the partition wall 41. The amount of internal air (permeability) passing through the upstream processing section 35 is determined by the cross-sectional area of the gap formed between the first granular treatment materials 40 in the first flat plate-like permeable container 39 (first The filling factor of the first granular treatment material 40), the opening ratio of the mesh of the first flat plate-like air-permeable container 39 is freely set within the range not lower than the air permeability of the filling layer of the first granular treatment material 40. Can be set to.

In the upstream processing unit 35 (the same applies to the downstream processing unit 36), the first granular processing material 40 existing on the front side irradiated with sunlight is adsorbed by the first photocatalyst 14 fixed to the surface thereof. Since the bad odorous substance is decomposed, the inner height of the upstream processing unit 35 (the first flat plate-like breathable container 39) (the first granular processing material 40 in the first flat plate-like breathable container 39) is increased. The thickness of the filling layer does not directly affect the ability to decompose malodorous substances, but in order to stably form a continuous surface layer irradiated with sunlight in the upstream processing unit 35, The thickness of the filling layer of the granular treatment material 40 is preferably, for example, 5 to 10 mm.

The type of pellets forming the first granular processing material 40 is preferably selected according to the composition of the malodorous substance contained in the internal air. When a plurality of malodorous substances are contained, the threshold of the odor intensity is low ( The first granular treatment material 40 is formed by combining pellets made of an adsorbent having a particularly excellent adsorbability for malodorous substances and pellets made of an adsorbent having an excellent adsorbability for a wide range of malodorous substances. It is preferable. In the case of the internal air containing a large amount of ammonia odorous substance, it is effective to use, as the adsorbent, for example, the first granular treatment material 40 including pellets using zeolite or sepiolite, and contains a large amount of aldehyde odorous substances. In the case of the internal air, it is effective to use, as the adsorbent, for example, the first granular treatment material 40 containing pellets using sepiolite. Further, in the case of the internal air containing a large amount of sulfide odor substance, it is effective to use, as the adsorbent, for example, the first granular treatment material 40 including pellets using activated carbon.

As shown in FIGS. 1(A) to 1(C) and FIG. 2, the ventilation device 17 includes an intake chamber 18 for taking in outside air from the outside of the windowless livestock house 11, and a longitudinal direction of the windowless livestock house 11 above the windowless livestock house 11. A duct 42 (an example of outside air introducing means) that is arranged along the direction and guides the outside air taken into the intake chamber 18 into the windowless livestock shed 11 through a plurality of outlets (not shown), and the inside of the windowless livestock shed 11 It has the exhaust chamber 20 which discharges air from the discharge port 19.
Curtains 47 and 48 that move up and down in conjunction with the operation of the lifter 46 attached to the wall surface 43 are attached to the openings 44 and 45 formed in the wall surface 43 on one end side of the intake chamber 18, respectively. There is. Further, as shown in FIGS. 1(D) and 2, the exhaust chamber 20 is attached to the discharge port 19 respectively, and from inside the windowless livestock house 11 via the opening 24a of the floor 24 and via the underfloor pit 25. The internal air flowing into the exhaust chamber 20 passes through the exhaust chamber 20 and is discharged from the discharge port 19, for example, two types of exhaust fans 50 and 51 (an example of the second exhaust means) having different exhaust capacities, and the internal air. A second deodorizing filter 52 that performs a deodorizing process when the air is discharged to the outside (before the internal air flows into the discharge port 19) is provided.

As shown in FIGS. 3 and 5, in the second deodorizing filter 52, the internal air that has flowed into the exhaust chamber 20 via the inside of the underfloor pit 25 provided in the windowless barn 11 moves toward the discharge port 19. A second flat plate-like breathable container 53 arranged in the exhaust chamber 20 so as to intersect with the flow direction of the internal air at that time, and a malodorous substance in the internal air contained in the second flat plate-like breathable container 53. And a second granular processing material 54 that adsorbs (captures) and decomposes by the second photocatalyst 16 carried on the surface. A mesh case 55 is arranged on the upstream side of the second deodorizing filter 52 (that is, the second flat plate-like breathable container 53) so as to intersect with the flow direction of the internal air in the exhaust chamber 20. A blocky malodorous adsorbent 56 that adsorbs malodorous substances contained in the internal air is housed (filled) in 55. In addition, a part of the roof 57 of the exhaust chamber 20 is configured by using a transparent member 58 that efficiently transmits sunlight, and the sunlight can enter the exhaust chamber 20.
Here, the deodorization of the malodorous substance by the second photocatalyst 16 is due to the same oxidative decomposition as the deodorization of the malodorous substance by the first photocatalyst 14, so that bacteria or viruses are present in the internal air flowing into the exhaust chamber 20. The bacteria and viruses are deactivated together with the deodorization (oxidative decomposition) of the malodorous substance, and the deodorized and sterilized internal air is released to the outside.

The second flat plate-like breathable container 53 and the mesh case 55 are arranged in close contact with the inner peripheral surface of the exhaust chamber 20 via a gas seal member via a mounting member (not shown). With such a configuration, only the internal air that has passed through the gap between the malodorous adsorbents 56 (the filling layer of the malodorous adsorbents 56) can reach the upstream side of the second deodorizing filter 52. Only the internal air that has passed through the second deodorizing filter 52 (that is, has passed through the gap between the second granular processing materials 54) can be discharged from the discharge port 19 to the outside.
Although a gap is provided between the second flat plate-like breathable container 53 and the mesh case 55 as shown in FIG. 3, the second flat plate-like breathable container 53 and the mesh case 55 are brought into contact with each other. You may arrange it.

As shown in FIG. 5, the second granular treatment material 54 is an adsorbent having pores (not shown) communicating with the inside thereof, for example, activated carbon, zeolite, sepiolite, or silica gel powder, each having a predetermined shape (for example, Any of activated carbon pellets, zeolite pellets, sepiolite pellets, and silica gel pellets molded into a cylindrical shape having a diameter of 0.5 to 4 mm and a length of 1.5 to 6 mm, or an outer diameter of 0.5 to 4 mm. It is composed of one or more combinations. Then, the second photocatalyst 16 (for example, anatase type titanium dioxide) is sprayed onto the second granular treatment material 54, so that the second photocatalyst 16 is supported on the surface of the second granular treatment material 54. ing. In addition, by adjusting the particle size so that the size of the second granular processing material 54 is within a certain range (adjusting the particle size), the second granular processing material 54 is placed in the second flat plate-like breathable container 53. When stored (filled) in, the gap can be efficiently formed between the second granular processing materials 54.

The second flat plate-like breathable container 53 can be formed of, for example, aluminum or an aluminum alloy, and the surface of the second flat plate-like breathable container 53 is subjected to alumite treatment or boehmite treatment. preferable. Thereby, even if the malodorous substance is corrosive, it is possible to prevent the second flat plate-like breathable container 53 from being damaged. A mesh plate-shaped partition wall 59 is provided vertically and horizontally in the second flat plate-like air permeable container 53, and is divided into a plurality of sections in a plan view. By dividing the inside of the second flat plate-like air permeable container 53 by the partition wall 59, the stored second granular processing material 54 moves downward even when the second flat plate-like air permeable container 53 is tilted. The second granular processing material 54 can be uniformly stored in the second flat plate-like air-permeable container 53.

The shape and size of the second flat plate-like air permeable container 53 can be arbitrarily set according to the usage condition in the exhaust chamber 20, and the mesh spacing of the second flat plate-like air permeable container 53 is the second granular treatment material. It is set according to the size of 54 (so that the second granular treatment material 54 does not flow out from the inside of the second flat plate permeable container 53). Further, the mesh spacing of the partition wall 59 is also set so that the second granular processing material 54 does not pass through the partition wall 59. The internal air amount (breathability) that passes through the second deodorizing filter 52 is determined by the cross-sectional area of the gap formed between the second granular processing materials 54 in the second flat plate-like breathable container 53 ( (Fillability of the second granular treatment material 54), the opening ratio of the mesh of the second flat plate-like air-permeable container 53 is within a range not lower than the air permeability of the filling layer of the second granular treatment material 54. It can be set freely.

Since sunlight enters the exhaust chamber 20, the upper surface of the second deodorizing filter 52 is exposed to sunlight. Therefore, in the second granular treatment material 54 existing on the upper surface side of the second deodorizing filter 52, the adsorbed malodorous substance is decomposed by the second photocatalyst 16 fixed to the surface thereof. Note that the thickness of the second deodorizing filter 52 (the thickness of the filling layer of the second granular processing material 54 in the second flat plate-like breathable container 53) does not directly affect the ability to decompose malodorous substances. However, in order for the continuous surface layer irradiated with sunlight to be stably formed in the second deodorizing filter 52, the thickness of the filling layer of the second granular treatment material 54 is, for example, 5 to 10 mm. It is good to say

The type of pellets forming the second granular processing material 54 is preferably selected according to the composition of the malodorous substance contained in the internal air. When a plurality of malodorous substances are contained, the malodorous substance having a low threshold of odor intensity is included. It is preferable that the second granular treatment material 54 is configured by combining pellets made of an adsorbent having a particularly excellent adsorbability with respect to the above and pellets made of an adsorbent having an excellent adsorbability for a wide range of malodorous substances.
In the case of internal air containing a large amount of ammonia odorous substances, it is effective to use the second granular treatment material 54 containing pellets using zeolite as an adsorbent, and in the case of internal air containing a large amount of aldehyde odorous substances. It is effective to use, as the adsorbent, for example, the second granular processing material 54 including pellets using sepiolite. Further, in the case of the internal air containing a large amount of sulfide odor substance, it is effective to use, as the adsorbent, for example, the second granular treatment material 54 containing pellets using activated carbon.

The malodorous adsorbent 56 can be composed of any one or a combination of activated carbon pellets, zeolite pellets, sepiolite pellets, and silica gel pellets, and the size of the malodorous adsorbent 56 is the second granular treatment material 54. Is larger than, for example, a cylindrical shape having a diameter of 2 to 6 mm and a length of 3 to 15 mm, or a spherical shape having an outer diameter of 3 to 5 mm. By making the size of the malodorous adsorbing material 56 larger than the size of the second granular processing material 54, the cross-sectional area of the gap formed between the second granular processing materials 54 (the filling layer of the second granular processing material 54 The air permeability of the malodorous adsorbent 56 can be made larger than that of the malodorous adsorbent 56. Thereby, even if the malodorous adsorbent 56 is arranged on the upstream side of the second deodorizing filter 52, it is possible to prevent the breathability of the internal air in the second deodorizing filter 52 from being affected.

The mesh case 55 can be formed of, for example, aluminum or an aluminum alloy, and the surface of the mesh case 55 is preferably subjected to alumite treatment or boehmite treatment. As a result, even if the foul-smelling substance has a corrosive property, it is possible to prevent the mesh case 55 from being damaged. In addition, a mesh plate-shaped partition wall 60 is provided vertically and horizontally in the mesh case 55, and is divided into a plurality of sections in a plan view. By dividing the inside of the mesh case 55 by the partition wall 60, even if the mesh case 55 is tilted, the stored malodorous adsorbent 56 is prevented from moving downward, and the malodorous adsorbent 56 is placed in the mesh case 55. Can be stored in the same way.
The shape and dimensions of the mesh case 55 are set according to the usage in the exhaust chamber 20, and the mesh spacing of the mesh case 55 depends on the size of the malodorous adsorbent 56 ( Set it so that it does not leak. The opening ratio of the mesh of the mesh case 55 can be freely set within a range not lower than the air permeability of the filling layer of the malodorous adsorbent 56.

The type of the adsorbent that constitutes the malodorous adsorbent 56 is preferably selected according to the composition of the malodorous substance contained in the internal air. When a plurality of malodorous substances are contained, adsorption to the malodorous substance having a low odor intensity threshold value is performed. It is preferable that the malodor adsorbent 56 is configured by combining pellets made of an adsorbent having particularly excellent properties and pellets made of an adsorbent having excellent adsorbability for a wide range of malodorous substances.
In the case of internal air containing a large amount of ammonia odorous substances, it is effective to use, for example, the malodorous adsorbent 56 using pellets using zeolite as an adsorbent, and in the case of internal air containing a large amount of aldehyde odorous substances. It is effective to use, as the adsorbent, for example, the malodorous adsorbent 56 using pellets using sepiolite. Further, in the case of internal air containing a large amount of sulfide odor substance, it is effective to use, for example, the malodor adsorbent 56 using pellets using activated carbon as the adsorbent.

Next, the operation of the livestock environment conservation facility 10 according to the embodiment of the present invention will be described.
Since the windowless barn 11 allows the manure 12 to be present in the windowless barn 11, it is possible to prevent the malodor from directly diffusing (leaking out) from the inside of the windowless barn 11 to the outside. Then, since the malodorous substance processing device 13 can carry out the excrement 12 from the windowless livestock building 11 to the outside of the windowless livestock housing 11 and store it while preventing the diffusion of the malodorous odor, the period of the malodorous production inside the windowless livestock housing 11 is possible. By shortening the length, it is possible to suppress the foul odor in the windowless barn 11. In addition, the circulation type air cleaning device 15 can reduce the malodorous substances contained in the internal air inside the windowless livestock building 11 and prevent the generation and multiplication of bacteria, maintain the sanitary condition inside the windowless livestock building 11 and cause pathogenic bacteria. It is possible to prevent the onset of the disease due to the airborne infection of. For this reason, it is possible to prevent the generation of offensive odors in the windowless barn 11 and to maintain the hygienic condition, and to prevent the disease of livestock due to the air infection of pathogenic bacteria. Furthermore, since the ventilator 17 can take in the outside air into the windowless livestock house 11 and exhaust a part of the internal air in the windowless livestock house 11, the state of the internal air in the windowless livestock house 11 (for example, carbon dioxide concentration). ) Can be maintained at the same level as the outside air. Since the internal air discharged from the windowless barn 11 is deodorized and sterilized and then released into the atmosphere, no bad odor, germs or viruses are diffused around the windowless barn 11.
Here, the deodorizing process and sterilizing process by the circulation type air cleaning device 15 uses the first photocatalyst 14 which is activated by sunlight, and the deodorizing process and the sterilizing process by the ventilation device 17 are activated by sunlight. Since the photocatalyst 16 is used for each process, the running cost of the deodorizing process can be reduced. Further, the malodorous substance is decomposed through the catalyst, and the decomposed product is mixed into the internal air and is discharged to the outside of the windowless livestock shed 11 and does not remain in the windowless livestock shed 11, so that the maintenance cost of the circulating air cleaning device 15 and The management cost can be reduced.

In the first deodorizing filter 32 of the circulation type air cleaning device 15, since the deodorizing sterilization element 37 is irradiated with sunlight, the first photocatalyst 14 of the first granular processing material 40 existing on the sunlight irradiation side is The active state is maintained, and the regeneration process is automatically performed on the first granular treatment material 40 existing on the sunlight irradiation side. Then, when the content of the malodorous substance contained in the internal air decreases, the concentration of the malodorous substance decreases on the sunlight irradiation side of the deodorization sterilization element 37. As a result, a concentration gradient of the malodorous substance is generated between the sunlight irradiation side of the deodorization sterilization element 37 and the other region, and the malodorous substance moves toward the sunlight irradiation side and reaches the sunlight irradiation side. The malodorous substance is decomposed and removed by the first photocatalyst 14. As a result, the regeneration process is automatically performed also in the deodorizing sterilization element 37.
When the malodorous substance is not decomposed due to the nighttime or the weather, the malodorous substance is adsorbed by the first granular treatment material 40, so that the deodorized purified air is returned to the windowless livestock house 11. ..

In the ventilator 17, when the malodorous substance contained in the internal air exhausted from the windowless barn 11 is large, part of the malodorous substance is adsorbed by the malodorous adsorbent 56 (the malodorous adsorbent 56 of the malodorous substance contained in the internal air. Is larger than the amount of the malodorous substance adsorbed by the malodorous adsorbent 56 separated from the malodorous adsorbent 56 and mixed into the internal air), and the content of the malodorous substance contained in the internal air is small. In this case, a part of the malodorous substance adsorbed on the malodorous adsorbent 56 is separated from the malodorous adsorbent 56 and mixed into the internal air (the malodorous substance adsorbed on the malodorous adsorbent 56 is removed from the malodorous adsorbent 56). Since the amount of the odorous substance contained in the internal air that is released is mixed with the amount of the malodorous substance contained in the internal air to the malodorous adsorbent 56, it has passed through the malodorous adsorbent 56, and thus the second deodorizing filter 52 Fluctuations in the content of malodorous substances contained in the internal air flowing into the air are suppressed.

Therefore, by combining the ability of the malodorous adsorbent 56 to adsorb the malodorous substance and the ability of the second deodorizing filter 52 to adsorb and decompose the malodorous substance, the malodorous substance contained in the internal air flowing into the second deodorizing filter 52 is combined. The second deodorizing filter 52 is made to have a value within the decomposing ability range of the second deodorizing filter 52, and the second deodorizing filter 52 is not upsized, and the internal air is temporarily stored in a tank or the like. Without doing so, it becomes possible to rapidly respond to fluctuations in the amount of generation of malodorous substances and to continuously perform stable decomposition and removal of malodorous substances. Further, in the malodorous adsorbent 56, when the content of the malodorous substance contained in the internal air decreases, a part of the malodorous substance adsorbed to the malodorous adsorbent 56 is released and mixed into the internal air. The regeneration process of the adsorbent 56 is automatically performed.

Since the 2nd deodorization filter 52 is irradiated with sunlight, the 2nd photocatalyst 16 of the 2nd granular processing material 54 which exists in the sunlight irradiation side maintains an active state, and exists in the sunlight irradiation side. The second granular material 54 is automatically regenerated. Then, when the content of the malodorous substance contained in the internal air decreases, the concentration of the malodorous substance decreases on the solar light irradiation side of the second deodorizing filter 52. As a result, a concentration gradient of the malodorous substance is generated between the sunlight irradiation side of the second deodorizing filter 52 and the other region, and the malodorous substance moves toward the sunlight irradiation side, so that the sunlight irradiation side. The malodorous substance that has reached the point is decomposed and removed by the second photocatalyst 16. As a result, the regeneration process is automatically performed also in the second deodorizing filter 52.
When the malodorous substance is not decomposed due to the nighttime or the weather, the malodorous substance is adsorbed by the malodorous adsorbent 56 and the second deodorizing filter 52. Air is released.

Two windowless barns of the same type used for breeding experiments were prepared, and one of the windowless barns was equipped with a circulating air purifier (zeolite pellets for the first granular treatment material and anatase titanium dioxide for the first photocatalyst). The test group was attached and used as a test group, and the other windowless barn was used as a control group. Then, in the test group and the control group, the same type of piglets were bred for the same number of animals for one month. During the breeding period, the house was not ventilated and manure was not discharged.
After the breeding period, the numbers of bacteria adhering to the floor, the numbers of suspended bacteria and suspended particles, and the odor concentration in the test group and the control group were measured, and the measured values were compared. In addition, in the test group and the control group, changes in the ammonia concentration during the breeding period and changes in the viable cell count of general bacteria adhering to the windowless barn were obtained, respectively.

As shown in FIG. 6, in comparison of the number of floor-adhering bacteria, in the test group, the number of general bacteria (MHA) was decreased by 3.5 orders of magnitude (about 1/3000), and that of the intestinal bacteria group (DHL) in the test group. ) Decreased by 5.3 digits (about 1/200000), Staphylococcus aureus (Mannit) decreased by 4 digits (about 1/10000), and potato dextrose (PD) decreased by 2.5 digits (about 1/300). ing.
As shown in FIG. 7, in the comparison of the number of suspended bacteria and the number of suspended particles, the number of suspended bacteria was reduced by 29% and the number of suspended particles was reduced by 53% in the test group as compared with the control group.
As shown in FIG. 8, in the comparison of the odor concentrations, in the test group, ammonia decreased by 84%, acetaldehyde decreased by 90% or more, and normal butyric acid decreased by 78% in the test group.

As shown in FIG. 9, in the test group, the ammonia concentration gradually increases with the passage of the breeding period, but does not significantly increase even when compared with the ammonia concentration around the windowless barn. On the other hand, in the control group, the ammonia concentration greatly increased with the passage of the breeding period. In addition, in the test group, it was confirmed that when the deodorizing sterilization element of the circulation type air cleaning device was blocked from sunlight, the ammonia concentration rapidly increased.
As shown in FIG. 10, in the test group, the viable cell count gradually increased with the passage of the breeding period, but in the control group, it was confirmed that the viable cell count reached a saturated state in a short period after the breeding was started. It was In the test group, it was confirmed that when the deodorizing sterilization element of the circulation type air purifying device was shielded from sunlight, the viable cell count rapidly increased.

As described above, when raising piglets in a windowless barn, without circulating ventilation in the windowless barn and discharging manure from the windowless barn, a circulating air purifier is installed in the windowless barn. It was confirmed that the installation can reduce the number of bacteria adhering to the floor surface, the number of floating bacteria and the number of suspended particles, and the odor concentration in the windowless barn as well as the reduction of the ammonia concentration and the viable cells in the windowless barn.
Therefore, by installing an offensive odor treatment device and a ventilation device in the windowless livestock shelter, while maintaining the livestock environment for the residents such as measures against the malodorous smell around the windowless livestock shed, the maintenance and improvement of hygiene in the windowless livestock shed etc. It is considered that the livestock environment protection for animals can be realized.

Although the present invention has been described above with reference to the exemplary embodiments, the present invention is not limited to the configurations described in the above-described exemplary embodiments, and includes the matters described in the claims. It also includes other embodiments and modifications that are conceivable within the scope.
Further, the present invention also includes a combination of the constituent elements respectively included in the present embodiment and other embodiments and modifications.

10: Livestock environment conservation equipment, 11: Windowless livestock shed, 12: Manure, 13: Malodorous treatment device, 14: First photocatalyst, 15: Circulating air cleaning device, 16: Second photocatalyst, 17: Ventilation device, 18: intake chamber, 19: discharge port, 20: exhaust chamber, 21: foundation, 22, 23: partition wall, 24: floor, 24a: opening, 25: underfloor pit, 26: cleaning discharge means, 27: cleaning water Tank, 28: Water transfer pipe, 29: Fan with hood, 30: Dust filter, 31: Roof, 32: First deodorizing filter, 33: Purified air introduction pipe, 34: Internal air derivation pipe, 35: Upstream processing unit , 36: downstream side treatment section, 37: deodorizing sterilization element, 38: box, 39: first flat plate-like breathable container, 40: first granular treatment material, 41: partition wall, 42: duct, 43: Walls, 44, 45: openings, 46: lifters, 47, 48: curtains, 49: wall surfaces, 50, 51: exhaust fan, 52: second deodorizing filter, 53: second flat air-permeable container, 54: second granular treatment material, 55: mesh case, 56: malodorous adsorbent material, 57: roof, 58: transparent member, 59, 60: partition wall

Claims (11)

An offensive odor processing device for carrying out and storing a malodorous substance originating from livestock generated inside a livestock house with an opening sealed while being carried out of the livestock house while preventing the diffusion of the malodorous,
A part of the internal air in the livestock house is taken out to the outside of the livestock house, and the first granular processed material that adsorbs a malodorous substance in the internal air is irradiated with sunlight, so that the surface of the first granular processed material is exposed. first by a photocatalyst, by performing the sterilization process while the first deodorizing decompose the adsorbed malodorous substance, and circulating air cleaning device back into該畜the house as clean air which is carried on,
While blowing the outside air taken in from the outside of the livestock shed into the livestock shed, another part of the internal air in the livestock shed is taken out and the second granular treatment material for capturing the malodorous substances in the internal air is used as the sun. light is irradiated, the second photocatalyst carried on the surface of the second granular treatment material, by performing a sterilization process while the second deodorizing decomposing the captured malodorous substances, the該畜sha A livestock environment conservation facility characterized by having a ventilation device that discharges to the outside. 2. The livestock environment conservation facility according to claim 1, wherein the malodorous substance processing device is provided under the floor of the livestock house, and has an underfloor pit for collecting the malodorous substance, and washing from one end side to the other end side of the underfloor pit. A livestock environment, comprising: a cleaning and discharging means for discharging the malodorous substances collected by flowing water from the underfloor pit, and a closed storage tank for collecting the malodorous substances discharged from the underfloor pit. Conservation equipment. 3. The livestock environment conservation equipment according to claim 1 or 2, wherein the circulation type air cleaning device takes out a part of the internal air to the outside of the livestock shed and the first exhaust means. A dust removing filter for removing dust in the internal air, a first deodorizing filter for converting the internal air that has passed through the dust removing filter into the purified air, and a purified air blowing means for returning the purified air into the barn. Livestock environment conservation equipment characterized by having. The livestock environment conservation facility according to claim 3, wherein the first deodorizing filter includes a plurality of upstream processing units and downstream processing units that are bent at a central portion and are respectively inclined with respect to the flow direction of the internal air. The deodorization sterilization element of is formed by connecting the ends of the deodorization sterilization elements adjacent to each other along the flow direction of the internal air,
The upstream side processing unit and the downstream side processing unit are respectively housed in a first flat plate-shaped breathable container arranged to intersect with the flow direction of the internal air, and in the first flat plate-shaped breathable container. And a livestock environment conservation facility having the first granular treatment material. The livestock environment conservation equipment according to claim 4, wherein the inside of the first flat plate-like breathable container is divided into a plurality of sections in plan view. The livestock environment conservation facility according to claim 4 or 5, wherein the first granular treatment material is composed of a combination of one or more of activated carbon pellets, zeolite pellets, sepiolite pellets, and silica gel pellets. Livestock environment conservation equipment to be. The livestock environment conservation facility according to any one of claims 1 to 6, wherein the ventilation device introduces an outside air from the outside of the livestock house, and an outside air introduction from the intake chamber to introduce the outside air into the livestock house. Second means for discharging the internal air in the livestock house from an outlet, the internal air in the livestock house passing through the exhaust chamber and being discharged from the outlet And a second deodorizing filter for performing the second deodorizing process when the internal air is discharged to the outside. The livestock environment conservation facility according to claim 7, wherein the second deodorizing filter is arranged in the exhaust chamber so as to intersect with a flow direction of the internal air, and a second flat air-permeable container, and the second deodorizing filter. Of the second granular treatment material housed in the flat air-permeable container of No. 3, and further adsorbs a malodorous substance contained in the internal air on the upstream side of the second flat air-permeable container. A livestock environment conservation facility, in which a lumpy malodorous adsorbent is placed. The livestock environment conservation equipment according to claim 8, wherein the inside of the second flat plate-like breathable container is divided into a plurality of sections in a plan view. The livestock environment conservation facility according to claim 8 or 9, wherein the size of the second granular treatment material is smaller than the size of the malodor adsorbent, and the second granular treatment material and the malodor adsorbent are respectively activated carbon pellets, A livestock environment conservation facility comprising one or a combination of at least two of zeolite pellets, sepiolite pellets, and silica gel pellets. The livestock environment conservation equipment according to any one of claims 1 to 10, wherein the livestock house having the opening closed is a windowless livestock farm.

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