JP2017023206A - Livestock farming environment maintenance equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide livestock farming environment maintenance equipment flexibly corresponding with a generation scale of malodorous substances in a livestock barn whose opening is sealed, keeping at a low cost a sanitary state in the livestock barn by carrying out malodorous substances from the livestock barn and ventilating the livestock barn while preventing odor from diffusing to the outside, and capable of performing maintenance and management of the equipment at a low cost.SOLUTION: Livestock farming environment management equipment 10 includes: a malodorous substance processing device 13 which carries out malodorous substances of domestic animal origin, generated in a livestock barn 11 whose opening is sealed, to the outside of the livestock barn 11 while preventing odor from diffusing, and pools the substances; a circulation type air cleaning device 15 which takes out a part of inside air in the livestock barn 11 to the outside of the livestock barn 11, and performs deodorization treatment using a first photocatalyst 14 activated by sunlight to return to the livestock barn 11 as purified air; and a ventilation device 17 which takes out a different part of inside air in the livestock barn 11 while sucking open air taken out from the outside of the livestock barn 11 into the livestock barn 11, and performs deodorization treatment using a second photocatalyst 16 activated by sunlight so as to discharge to the outside of the livestock barn 11.SELECTED DRAWING: Figure 2

Description

The present invention is efficient at low cost while preventing the spread of malodorous substances such as manure from the ventilation and ventilation of a livestock barn (for example, windowless barn) with a sealed opening, while preventing the spread of malodors outside the barn. It relates to livestock environment conservation equipment.

As the residential area of residents expands to the suburbs and housing and barns are mixed, and the scale of the barns grows, preserving the livestock environment for residents, such as measures against bad odors around the barns, It is an urgent issue. Therefore, for example, a windowless barn that has a structure in which malodorous components derived from barns are difficult to diffuse outside the barn has attracted attention as one of the measures against malodors.
On the other hand, odors generated from malodorous substances such as manure in the windowless barn stay in the structure, so animals such as treatment of malodorous substances generated in the windowless barn, ventilation in the windowless barn, maintenance and improvement of hygienic conditions in the windowless barn Conservation of livestock environment is important from the viewpoint of improving productivity by maintaining animal health (preventing disease).

Therefore, as a device for ventilating the windowless barn without diffusing bad odors around the surrounding area, for example, in Patent Document 1, a deodorizing chamber installed adjacent to the outside of the windowless barn and a deodorizing chamber are disposed. Exhaust deodorization of a foul odor generating facility comprising a dust removing device that removes dust and the like contained in exhaust exhausted from a ventilation fan of a windowless barn and a deodorizing material layer that is disposed inside the deodorizing chamber and deodorizes the exhausted dust. An apparatus is disclosed. Here, the dust removing device is disposed on the downstream side of the ventilation fan and has a dust removing main body portion having a large number of ventilation holes through which the exhaust discharged from the ventilation fan passes, and the dust removing main body portion disposed between the dust removal main body portion and the ventilation fan. A first watering device that uniformly sprinkles water on the side surface of the water and a water storage tank that is provided at a position below the dust removing main body, collects the water sprayed, and stores it as water for the first watering device. ing. The deodorizing material layer is formed by laminating deodorizing materials including non-heat-treated coconut chip to which organic matter and microorganisms are added.

JP 2007-190534 A

However, the exhaust deodorization apparatus described in Patent Document 1 has a problem that dust accumulates in the water storage tank when it is operated for a long period of time, and a problem that deodorizing material is reduced due to aging of the coconut chip. For this reason, regular maintenance (removal of dust in the water storage tank, replacement of coconut chip) must be performed, and the burden of maintenance and management of the exhaust deodorization device is necessary to operate the exhaust deodorization device stably. There is a problem that becomes larger.

The present invention has been made in view of such circumstances, and responds flexibly to the generation scale of malodorous substances in a barn with the opening sealed, and prevents malodors from spreading inside the barn while preventing the spread of malodors outside the barn. The purpose of this project is to provide animal husbandry environment conservation equipment that can carry out goods and ventilate the barn to maintain the hygienic condition of the barn at a low cost and can maintain and manage the equipment at a low cost. .

The livestock environment preservation equipment according to the present invention that meets the above-mentioned object is a malodorous substance that stores malodorous substances originating in a livestock barn that has been sealed in an opening, outside the barn while preventing the spread of malodorous substances. A processing device;
A part of the internal air in the barn is taken out of the barn, and the first photocatalyst activated by sunlight is used to perform a first deodorization treatment and return to the barn as purified air. Equipment,
A second deodorizing process using a second photocatalyst activated by sunlight, taking out another part of the internal air in the barn while blowing outside air taken from outside the barn into the barn And a ventilator for discharging to the outside of the barn.

In the livestock environment maintenance facility according to the present invention, since the opening of the barn is sealed, it is possible to prevent malodor from diffusing (leaking out) to the surroundings even if malodorous substances are present in the barn. And, since the malodorous substance treatment apparatus can carry out and store the malodorous substance from the inside of the barn while preventing the spread of the bad smell, the period of bad odor generation in the barn can be shortened. It becomes possible to suppress the bad odor. In addition, the circulation type air purifier can reduce malodorous substances contained in the air inside the barn, prevent the generation and growth of bacteria, maintain hygienic conditions in the barn, and cause airborne pathogens It becomes possible to prevent disease. Furthermore, since the outside air can be taken into the barn by the ventilator and a part of the internal air inside the barn can be exhausted, the state of the internal air inside the barn (for example, carbon dioxide concentration) is almost the same as the outside air. It becomes possible to maintain.
Here, the 1st deodorizing process by a circulation type air purifier uses the 1st photocatalyst activated by sunlight, and the 2nd deodorizing process by a ventilator uses the 2nd photocatalyst activated by sunlight. Therefore, the running cost of the equipment can be reduced. In addition, the malodorous substance is decomposed via the catalyst, and the decomposed product is mixed in the internal air and discharged outside the barn, so that it does not remain in the barn, so that the maintenance cost and management cost of the equipment can be reduced.

(A) is a south side view of the livestock environmental conservation facility according to one embodiment of the present invention, (B) is a north side view of the livestock environmental conservation facility, and (C) is a view taken along the line PP in (A). (D) is a QQ arrow view of (A). It is a block diagram of the same livestock environmental conservation equipment. It is a block diagram by the side of the exhaust room of the same livestock environmental protection equipment. It is explanatory drawing of a deodorizing sterilization element. It is the elements on larger scale of a 2nd deodorizing filter and a malodor adsorption material. It is a graph which shows the comparison result of the floor surface adhesion microbe in the test group of an Example, and a control group. It is a graph which shows the comparison result of the airborne microbe and the number of airborne particles in the test group of an Example, and a control group. It is a graph which shows the comparison result of the odor density | concentration in the test group of an Example, and a control group. It is a graph which shows the change of the ammonia concentration during the breeding period in the test group of an Example, and a control group. It is a graph which shows the change of the viable count of the general bacteria adhering in the windowless barn during the breeding period in the test group of an Example, and a control group.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIGS. 1 (A) to 1 (D) and FIG. 2, livestock environment conservation equipment 10 according to an embodiment of the present invention is generated in a windowless barn 11 that is an example of a barn with an opening sealed. The malodorous material processing apparatus 13 which carries out and stores the malodorous substance derived from livestock, for example, excrement 12 (refer FIG. 3) outside the windowless barn 11 while preventing the spread of the malodor from the windowless barn 11 to the outside, Then, a part of the air inside the windowless barn 11 is taken out of the windowless barn 11 and deodorized by the first photocatalyst 14 (see FIG. 4) activated by sunlight (first deodorized process). ) And return to the windowless barn 11 as purified air.
Here, the deodorization of the malodorous substance contained in the internal air is performed by oxidizing the active oxygen generated by reducing the oxygen in the air and the hydroxyl group contained in the moisture in the air by the activated first photocatalyst 14. This is due to the oxidative decomposition of malodorous substances by the generated hydroxyl radicals. Therefore, when bacteria and viruses are present in the internal air, the proteins constituting the bacteria and viruses are oxidatively decomposed together with the deodorization (oxidative decomposition) of malodorous substances. For this reason, bacteria and viruses in the purified air are inactivated (purified air is sterilized).

Further, the livestock environment conservation facility 10 is provided on one end side of the windowless barn 11, provided in the intake chamber 18 for taking outside air from the outside of the windowless barn 11, and provided on the other end side of the windowless barn 11, Deodorizing treatment (second deodorizing treatment) using the second photocatalyst 16 (see FIG. 5) activated by sunlight, taking out another part of the internal air inside the windowless housing 11 while blowing into the windowless housing 11 ), And a ventilator 17 having an exhaust chamber 20 that discharges to the outside of the windowless barn 11 through the discharge port 19.
Here, the windowless barn 11 is provided in the area | region except the longitudinal direction both sides of the foundation 21 constructed | assembled, for example with the longitudinal direction turned to the east-west direction. In addition, 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 connected to one end side of the windowless barn 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 barn 11 and the partition wall 23, and the other end side of the exhaust chamber 20. The wall surface 49 is provided with a plurality of discharge ports 19. Details will be described below.

As shown in FIGS. 2 and 3, the malodorous substance treatment apparatus 13 is provided under the floor 24 of the windowless barn 11 and accommodates (collects) excreted excreta 12, and one end of the underfloor pit 25. Cleaning and discharging means 26 for discharging manure 12 accommodated by flowing cleaning water from the side (intake chamber 18 side) toward the other end side (exhaust chamber 20 side); A closed storage tank (not shown) for collecting and storing the excreted urine 12 is provided.
Here, the floor 24 is arranged in the windowless barn 11 with the upper surface of the foundation 21 being coincident with the height position, and is made of a net-like plate formed by dispersing the 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 from the opening 24a.
Further, the cleaning and discharging means 26 includes a cleaning water tank 27 disposed on the upper side in the intake chamber 18 and an opening / closing valve (not shown), and the cleaning water is discharged from the cleaning water tank 27 by using a head. And a water supply pipe (not shown) provided with a water supply pump for supplying cleaning water to the cleaning water tank 27. By moving the manure 12 together with the washing water in the underfloor pit 25, it becomes possible to prevent dust generation associated with the washing and movement in the underfloor pit 25.

As shown in FIGS. 1A, 1 </ b> B, and 2, a plurality of circulation type air purifiers 15 are arranged at intervals along the longitudinal direction of the windowless barn 11, for example.
And as shown in FIG. 3, the circulation type air purifying device 15 includes a fan 29 with a hood (an example of a first exhaust unit) that takes out part of the internal air in the windowless barn 11 to the outside of the windowless barn 11; A dust removal filter 30 that removes dust in the internal air taken out by the fan 29 with the hood, and passed through the dust removal filter 30 and provided outside the windowless barn 11, for example, on the roof 31 of the windowless barn 11, and removed. A first deodorizing filter 32 that converts the internal air into deodorized and sterilized processing and purified air introduced from the first deodorizing filter 32 into the windowless barn 11 (purified air blowing An example of means). Reference numeral 34 denotes an internal air outlet pipe through which the internal air that has passed through the dust removal filter 30 flows into the first deodorizing filter 32.

The first deodorizing filter 32 includes a plurality of deodorizing and sterilizing elements 37 each 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 box 38 that houses the sterilizing element 37.
Here, the widths of the upstream processing unit 35 and the downstream processing unit 36 of the deodorizing and sterilizing element 37 are equal, and when the deodorizing and sterilizing element 37 is housed in the box 38, the deodorizing and sterilization adjacent to each other along the flow direction of the internal air. The ends of the element 37 are in contact (connected). The box 38 is installed on the south side of the roof 31 of the windowless barn 11 with the longitudinal direction facing the east-west direction, and the connection ports of the purified air introduction pipe 33 and the internal air outlet pipe 34 are respectively provided at both end faces in the longitudinal direction. Is formed. Moreover, the upper surface of the box 38 and the south side surface are comprised with the transparent member which permeate | transmits sunlight efficiently. When the upstream processing unit 35 (downstream processing unit 36) is inserted into the box 38, the gap between the inner surface of the box 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 38 so that a slight gap is formed, and the deodorizing and sterilizing element is adjusted with respect to the inner height of the box 38. 37 by adjusting the height between the central portion 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. And a gas seal member (not shown) can be inserted between the outer periphery of the downstream processing unit 36 and the outer periphery of the downstream processing unit 36, respectively. By setting it as such a structure, the internal air introduce | transduced in the box 38 can pass the deodorizing sterilization element 37 sequentially reliably.

As shown in FIG. 4, the upstream processing unit 35 (the same applies to the downstream processing unit 36) includes a first flat plate-like air-permeable container 39 disposed so as to intersect the flow direction of the internal air, and a first flat plate. And a first granular treatment material 40 that is accommodated in the air-permeable container 39 and that adsorbs malodorous substances contained in the passing internal air and decomposes by the first photocatalyst 14 carried on the surface. . Therefore, a 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 38.
The first granular treatment material 40 is made of an adsorbent having pores (not shown) communicating with the inside thereof, for example, activated carbon, zeolite, sepiolite, and silica gel powders each having a predetermined shape (for example, a diameter of 0.5 to 4 mm). Any one or more of activated carbon pellets, zeolite pellets, sepiolite pellets, and silica gel pellets formed into a cylindrical shape with a length of 1.5 to 6 mm, or granular with an outer diameter of 0.5 to 4 mm) Consists of Then, the first photocatalyst 14 (for example, anatase-type titanium dioxide) is sprayed onto the first granular treatment material 40 to support the first photocatalyst 14 on the surface of the first granular treatment material 40. ing.
Here, by adjusting the particle size so that the size of the first granular processing material 40 falls within a certain range (aligning the particle size), the first granular processing material 40 is converted into the first flat air-permeable container 39. When stored (filled) inside, a gap can be efficiently formed between the first granular processing materials 40.

The first flat plate-shaped breathable container 39 can be made of, for example, aluminum or an aluminum alloy, and the surface of the first flat plate-shaped breathable container 39 is subjected to alumite treatment or boehmite treatment. preferable. Thereby, even if the malodorous substance is corrosive, damage to the first flat air-permeable container 39 can be prevented. Further, a net-plate-like partition wall 41 is provided vertically and horizontally in the first flat plate-like air-permeable container 39, and is divided into a plurality of sections in plan view. By dividing the inside of the first flat plate-shaped air-permeable container 39 by the partition wall 41, the first granular processing material 40 accommodated moves downward even when the first flat-plate type air-permeable container 39 is tilted. And the first granular processing material 40 can be uniformly stored in the first flat plate-shaped breathable container 39.

The interval between the meshes of the first flat plate-shaped breathable container 39 depends on the size of the first granular processing material 40 (so that the first granular processing material 40 does not flow out of the first flat plate-shaped breathable container 39. ) Set. In addition, the mesh interval of the partition wall 41 is also set so that the first granular processing material 40 does not pass through the partition wall 41. Note that the amount of internal air (air permeability) passing through the upstream processing unit 35 is the cross-sectional area of the gap formed between the first granular processing materials 40 in the first flat plate-shaped air-permeable container 39 (first). Therefore, the opening ratio of the mesh of the first flat-plate breathable container 39 can be freely set within a range not lower than the breathability of the packed layer of the first granular treatment material 40. Can be set.

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 malodorous substance is decomposed, the inner height of the upstream processing section 35 (first flat breathable container 39) (the thickness of the packed layer of the first granular processing material 40 in the flat mesh container 35) ) 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 section 35, the first granular processing material 40 is used. The thickness of the filling layer is preferably 5 to 10 mm, for example.

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

As shown in FIGS. 1A to 1C and FIG. 2, the ventilator 17 includes an intake chamber 18 for taking outside air from the outside of the windowless barn 11, and a longitudinal direction of the windowless barn 11 above the windowless barn 11. A duct 42 (an example of outside air introduction means) that is arranged along the direction and guides outside air taken into the intake chamber 18 into the windowless barn 11 through a plurality of outlets (not shown), and the inside of the windowless barn 11 An exhaust chamber 20 that discharges air from the discharge port 19 is provided.
Here, curtains 47, 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, 45 formed in the wall surface 43 on one end side of the intake chamber 18. Yes. Further, as shown in FIGS. 1D and 2, the exhaust chamber 20 is attached to the discharge port 19 from the inside of the windowless barn 11 through the opening 24 a of the floor 24 and 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 second exhaust means) having different exhaust capabilities, and the internal air A second deodorizing filter 52 is provided for performing a deodorizing process when the air is discharged to the outside (before the internal air flows into the discharge port 19).

As shown in FIGS. 3 and 5, in the second deodorizing filter 52, the internal air flowing into the exhaust chamber 20 through the underfloor pit 25 provided in the windowless barn 11 moves toward the discharge port 19. The second flat air-permeable container 53 disposed in the exhaust chamber 20 so as to intersect the flow direction of the internal air at the time, and the malodorous substance in the internal air housed in the second flat air-permeable container 53 And a second granular processing material 54 that is adsorbed (captured) and decomposed by the second photocatalyst 16 supported on the surface. A mesh case 55 is disposed on the upstream side of the second deodorizing filter 52 (that is, the second flat plate-like air-permeable container 53) so as to intersect the flow direction of the internal air in the exhaust chamber 20, and the mesh case. 55 is housed (filled) with a blocky malodor adsorbing material 56 that adsorbs malodorous substances contained in the internal air. A part of the roof 57 of the exhaust chamber 20 is configured by using a transparent member 58 that efficiently transmits sunlight, so that sunlight can enter the exhaust chamber 20.
Here, since 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, if bacteria and viruses exist in the internal air flowing into the exhaust chamber 20, In addition, bacteria and viruses are inactivated together with deodorization (oxidative decomposition) of malodorous substances, and the deodorized and sterilized internal air is released to the outside.

The second flat plate-like air-permeable container 53 and the net-like case 55 are disposed in close contact with the inner peripheral surface of the exhaust chamber 20 via a gas seal member via an attachment member (not shown). By setting it as such a structure, only the internal air which passed the clearance gap between the malodorous adsorbents 56 (packing layer of the malodorous adsorbent 56) can be made to reach the upstream of the 2nd deodorizing filter 52, Furthermore, Only the internal air that has passed through the second deodorizing filter 52 (that is, that has passed through the gap between the second granular treatment materials 54) can be discharged to the outside from the discharge port 19.
As shown in FIG. 3, a gap is provided between the second flat plate-like breathable container 53 and the net-like case 55, but the second flat plate-like breathable container 53 and the net-like case 55 are brought into contact with each other. May be arranged.

As shown in FIG. 5, the second granular treatment material 54 is made of adsorbent having pores (not shown) communicating with the interior thereof, for example, activated carbon, zeolite, sepiolite, and silica gel powders in predetermined shapes (for example, Any of activated carbon pellets, zeolite pellets, sepiolite pellets, and silica gel pellets formed into a cylindrical shape with a diameter of 0.5-4 mm and a length of 1.5-6 mm, or a granule with an outer diameter of 0.5-4 mm It is composed of one or a combination of two or more. Then, the second photocatalyst 16 (for example, anatase-type titanium dioxide) is sprayed onto the second granular treatment material 54 to support the second photocatalyst 16 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 (aligning the particle size), the second granular processing material 54 is placed in the second flat air-permeable container 53. When stored (filled), a gap can be efficiently formed between the second granular processing materials 54.

The second flat breathable container 53 can be formed of, for example, aluminum or an aluminum alloy, and the surface of the second flat breathable container 53 is subjected to alumite treatment or boehmite treatment. preferable. Thereby, even if the malodorous substance is corrosive, damage to the second flat plate-like breathable container 53 can be prevented. Further, a net-plate-like partition wall 59 is provided in the second flat plate-like breathable container 53 in the vertical and horizontal directions, and is divided into a plurality of sections in plan view. By dividing the inside of the second flat plate-like breathable container 53 by the partition wall 59, the second granular processing material 54 accommodated moves downward even when the second flat plate-like breathable container 53 is tilted. The second granular processing material 54 can be uniformly accommodated in the second flat breathable container 53.

The shape and size of the second flat plate-shaped air permeable container 53 can be arbitrarily set according to the use situation in the exhaust chamber 20, and the interval between the meshes of the second flat plate-shaped air permeable container 53 is the second granular processing material. It is set according to the size of 54 (so that the second granular processing material 54 does not flow out of the second flat plate-shaped air-permeable container 53). The interval between the meshes of the partition wall 59 is also set so that the second granular processing material 54 does not pass through the partition wall 59. Note that the internal air amount (air permeability) passing through the second deodorizing filter 52 is the cross-sectional area of the gap formed between the second granular processing materials 54 in the second flat plate-like air-permeable container 53 ( Therefore, the opening ratio of the mesh of the second flat plate-like air-permeable container 53 is within a range that does not fall below the air permeability of the packed layer of the second granular treatment material 54. Can be set freely.

Since sunlight enters the exhaust chamber 20, the upper surface side of the second deodorizing filter 52 is irradiated with sunlight. For this reason, in the 2nd granular processing material 54 which exists in the upper surface side of the 2nd deodorizing filter 52, the adsorbed malodorous substance is decomposed | disassembled by the 2nd photocatalyst 16 adhering to the surface. Note that the thickness of the second deodorizing filter 52 (the thickness of the packed layer of the second granular treatment material 54 in the second flat 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 packed layer of the second granular treatment material 54 is, for example, 5 to 10 mm. It is good to do.

The kind of pellets constituting the second granular processing material 54 is preferably selected according to the composition of malodorous substances 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 processing material 54 is constituted by combining pellets made of an adsorbent particularly excellent in adsorbability with respect to the pellets made of adsorbent excellent in adsorbability for a wide range of malodorous substances.
In the case of internal air containing a lot of ammonia odor substances, it is effective to use the second granular processing material 54 containing pellets using zeolite as an adsorbent, and in the case of internal air containing a lot of aldehyde odor substances. It is effective to use, for example, the second granular processing material 54 including pellets using sepiolite as the adsorbent. Further, in the case of internal air containing a large amount of sulfide odor substance, it is effective to use, for example, the second granular processing material 54 including pellets using activated carbon as an adsorbent.

The malodorous adsorbing material 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 adsorbing material 56 is the second granular processing material 54. 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 malodor 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 packed layer of the second granular processing material 54) The cross-sectional area of the gap formed between the malodorous adsorbents 56 (the air permeability of the packed layer of the malodorous adsorbents 56) can be increased. Thereby, even if the malodor adsorbing material 56 is arranged on the upstream side of the second deodorizing filter 52, the air permeability of the internal air in the second deodorizing filter 52 can be prevented from being affected.

The net-like case 55 can be formed of, for example, aluminum or an aluminum alloy, and the surface of the net-like case 55 is preferably subjected to alumite treatment or boehmite treatment. Thereby, even if the malodorous substance is corrosive, damage to the mesh case 55 can be prevented. In addition, a mesh plate-like partition wall 60 is provided in the mesh case 55 vertically and horizontally, and is divided into a plurality of sections in plan view. By dividing the inside of the net-like case 55 by the partition wall 60, the malodorous adsorbent 56 stored is prevented from moving downward even when the net-like case 55 is tilted. Can be stored.
The shape and dimensions of the mesh case 55 are set according to the use situation in the exhaust chamber 20, and the mesh interval of the mesh case 55 depends on the size of the malodorous adsorbent 56 ( Set so that it does not flow out. The opening ratio of the mesh of the mesh case 55 can be freely set within a range that does not fall below the air permeability of the packed layer of the malodorous adsorbent 56.

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

Then, the effect | action of the livestock environment maintenance equipment 10 which concerns on one embodiment of this invention is demonstrated.
Due to the windowless barn 11, even if the manure 12 is present in the windowless barn 11, it is possible to prevent the bad odor from being directly diffused (leaked) from the windowless barn 11 to the outside. And since the malodorous material processing apparatus 13 can carry out and store the excrement 12 from the inside of the windowless barn 11 outside the windowless barn 11 while preventing the spread of the bad smell, the generation period of the bad smell in the windowless barn 11 It becomes possible to suppress the malodor in the windowless barn 11 by shortening. Further, the circulation type air purifier 15 can reduce malodorous substances contained in the internal air in the windowless barn 11 and prevent the generation and growth of bacteria, maintain the sanitary condition in the windowless barn 11 and pathogenic bacteria. It becomes possible to prevent the disease caused by air infection. Therefore, it is possible to prevent the generation of bad odor in the windowless barn 11 and maintain the sanitary state, and to prevent the livestock from being caused by air infection of pathogenic bacteria. Furthermore, since the outside air can be taken into the windowless barn 11 by the ventilator 17 and a part of the internal air in the windowless barn 11 can be exhausted, the state of the internal air in the windowless barn 11 (for example, the 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, bad odors, bacteria and viruses do not diffuse around the windowless barn 11.
Here, the deodorizing process and the sterilizing process by the circulation type air purifying device 15 use the first photocatalyst 14 activated by sunlight, and the deodorizing process and the sterilizing process by the ventilation apparatus 17 are activated by the sunlight. Since it performs using the photocatalyst 16, respectively, the running cost of a deodorizing process can be reduced. Further, the malodorous substance is decomposed via the catalyst, and the decomposed product is mixed in the internal air and discharged outside the windowless barn 11 and does not remain in the windowless barn 11. Management costs can be reduced.

In the 1st deodorizing filter 32 of the circulation type air purifier 15, since the deodorizing sterilization element 37 is irradiated with sunlight, the 1st photocatalyst 14 of the 1st granular processing material 40 which exists in the sunlight irradiation side is The activated state is maintained, and the regeneration processing is automatically performed on the first granular processing material 40 existing on the sunlight irradiation side. And if content of the malodorous substance contained in internal air falls, the density | concentration of malodorous substance will fall in the sunlight irradiation side of the deodorizing sterilization element 37. FIG. As a result, a concentration gradient of the malodorous substance is generated between the sunlight irradiation side of the deodorizing and sterilizing element 37 and the other area, 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. Thereby, also in the deodorizing sterilization element 37, a regeneration process is performed automatically.
If the malodorous substance is not decomposed due to nighttime or weather conditions, the malodorous substance is adsorbed by the first granular processing material 40, so that the deodorized purified air is returned into the windowless barn 11. .

In the ventilator 17, when there are many malodorous substances contained in the internal air exhausted from the windowless barn 11, some of the malodorous substances are adsorbed on the malodorous adsorbent 56 (the malodorous adsorbent 56 of the malodorous substance contained in the internal air). The amount of malodorous substances adsorbed by the malodorous adsorbent 56 is larger than the amount of desorption of the malodorous substance adsorbed by the malodorous adsorbent 56 and mixed into the internal air), and the content of malodorous substances 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 in the internal air (the malodorous substance adsorbed on the malodorous adsorbent 56 is removed from the malodorous adsorbent 56. The amount of detachment that is separated and mixed into the internal air is greater than the amount of odorous substances contained in the internal air adsorbed to the odor adsorbent 56), so that it has passed through the odor adsorbent 56. Therefore, the second deodorizing filter 52 The content variation of malodorous substances contained within the air flowing is suppressed.

Therefore, the malodorous substance contained in the internal air flowing into the second deodorizing filter 52 by combining the adsorption capacity of the malodorous substance by the malodorous adsorbing material 56 and the adsorption / dissolving ability of the malodorous substance by the second deodorizing filter 52. By setting the content of the second deodorizing filter 52 to a value within the decomposition capacity range of the second deodorizing filter 52, the second deodorizing filter 52 is not enlarged, and the internal air is temporarily stored in a tank or the like. Without this, it becomes possible to perform stable decomposition and removal of malodorous substances continuously in response to fluctuations in the amount of malodorous substances generated. Further, in the malodorous adsorbent 56, when the content of malodorous substances contained in the internal air is reduced, some of the malodorous substances adsorbed on the malodorous adsorbing material 56 are separated and mixed into the internal air. The regeneration process of the adsorbent 56 is automatically performed.

Since the second deodorizing filter 52 is irradiated with sunlight, the second photocatalyst 16 of the second granular treatment material 54 present on the sunlight irradiation side is maintained in an active state and is present on the sunlight irradiation side. Regeneration processing is automatically performed on the second granular processing material 54. And if content of the malodorous substance contained in internal air falls, the density | concentration of malodorous substance will fall in the sunlight irradiation side of the 2nd deodorizing filter 52. FIG. 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 area, and the malodorous substance moves toward the sunlight irradiation side, and the sunlight irradiation side The malodorous substance that has reached is decomposed and removed by the second photocatalyst 16. Thereby, also in the 2nd deodorizing filter 52, a reproduction | regeneration process is performed automatically.
When the malodorous substance is not decomposed due to nighttime or weather conditions, the malodorous substance is adsorbed by the malodorous adsorbent 56 and the second deodorizing filter 52. Air is released.

Prepare two windowless sheds of the same type to be used for breeding experiments. One windowless shed is equipped with a circulating air purifier (the first granular treatment material is zeolite pellets and the first photocatalyst is anatase-type titanium dioxide). It was set as a test group, and the other windowless barn was used as a control group. In the test group and the control group, pigs of the same body type were bred for the same number of animals for one month. During the breeding period, the inside of the barn was not ventilated and no excreta was discharged.
Then, after the breeding period, the number of bacteria adhered to the floor, the number of airborne bacteria and particles, and the odor concentration in the test group and the control group were measured, and the measured values were compared. Further, in the test group and the control group, the change in the ammonia concentration during the breeding period and the change in the number of viable bacteria of the general bacteria attached to the windowless barn were obtained.

As shown in FIG. 6, in the comparison of the number of bacteria adhered to the floor surface, in the test group, the general bacteria (MHA) decreased by 3.5 orders of magnitude (about 1/3000) and the intestinal bacteria group (DHL) compared to the control group. ) Decreases by 5.3 orders of magnitude (about 1/20000), Staphylococcus aureus (Mannit) reduces by 4 orders of magnitude (about 1/10000), and potato dextrose (PD) decreases by 2.5 orders of magnitude (about 1/300). ing.
As shown in FIG. 7, in the comparison of the number of airborne bacteria and the number of airborne particles, the number of airborne bacteria decreased by 29% and the number of airborne particles decreased by 53% in the test group compared to the control group.
As shown in FIG. 8, in the comparison of odor concentrations, the test group decreased by 84% for ammonia, 90% or more for acetaldehyde, and 78% for normal butyric acid, compared to the control 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 compared to 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 the test group, it was confirmed that the ammonia concentration rapidly increased when sunlight was blocked against the deodorizing and sterilizing element of the circulation type air purifier.
As shown in FIG. 10, in the test group, the number of viable bacteria gradually increases with the passage of the breeding period, but in the control group, it can be confirmed that the number of viable bacteria reaches the saturation state in a short time after starting breeding. It was. In the test group, it was confirmed that the number of viable bacteria rapidly increased when sunlight was blocked against the deodorizing and sterilizing element of the circulating air purifier.

As described above, when a piglet is raised using a windowless barn, a circulation type air cleaner is installed in the windowless barn without ventilating the inside of the windowless barn and without discharging manure from the windowless barn. By installing it, it was confirmed that the number of bacteria attached to the floor, the number of suspended bacteria and suspended particles, and the odor concentration in the windowless barn can be reduced, and the ammonia concentration and the number of viable bacteria in the windowless barn can be reduced.
Therefore, by installing a malodor treatment device and a ventilator in the windowless barn, maintaining and improving the sanitary condition in the windowless barn while protecting the livestock environment for residents such as countermeasures for bad odor around the windowless barn. It is thought that livestock environment conservation for animals can be realized.

As described above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the configuration described in the above-described embodiment, and the matters described in the scope of claims. Other embodiments and modifications conceivable within the scope are also included.
Further, the present invention also includes a combination of components included in the present embodiment and other embodiments and modifications.

10: Livestock environment conservation equipment, 11: Windowless barn, 12: Manure, 13: Malodorous treatment device, 14: First photocatalyst, 15: Circulating air purification 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: pit under floor, 26: cleaning discharge means, 27: cleaning water Tank: 28: Water conveyance pipe, 29: Fan with hood, 30: Dust filter, 31: Roof, 32: First deodorization filter, 33: Purified air introduction pipe, 34: Internal air outlet pipe, 35: Upstream processing section , 36: downstream processing unit, 37: deodorizing and sterilizing element, 38: box, 39: first flat plate-shaped air-permeable container, 40: first granular processing material, 41: partition wall, 42: duct, 43: Wall surface, 44, 45: opening, 46: riff -, 47, 48: Curtain, 49: Wall surface, 50, 51: Exhaust fan, 52: Second deodorizing filter, 53: Second flat plate breathable container, 54: Second granular treatment material, 55: Reticulated Case, 56: Bad odor adsorbent, 57: Roof, 58: Transparent member, 59, 60: Partition wall

Claims (12)

A malodorous treatment apparatus for carrying out and storing malodorous substances originating from livestock generated in a barn with the opening sealed, to the outside of the barn while preventing the spread of malodorous,
A part of the internal air in the barn is taken out of the barn, and the first photocatalyst activated by sunlight is used to perform a first deodorization treatment and return to the barn as purified air. Equipment,
A second deodorizing process using a second photocatalyst activated by sunlight, taking out another part of the internal air in the barn while blowing outside air taken from outside the barn into the barn A livestock environment preservation facility comprising: a ventilator that performs and discharges to the outside of the barn. The livestock environment preservation facility according to claim 1, wherein the circulating air purifier performs a sterilization process while performing the first deodorization process. The livestock environment preservation facility according to claim 1 or 2, wherein the malodorous treatment device is provided under the floor of the barn and collects the malodorous material from an underfloor pit toward one end side of the underfloor pit. A cleaning and discharging means for discharging the malodorous substance collected by flowing washing water from the underfloor pit, and a sealed storage tank for collecting the malodorous substance discharged from the underfloor pit. Livestock environment conservation equipment. The livestock environment maintenance facility according to any one of claims 1 to 3, wherein the circulating air cleaning device includes a first exhaust unit that extracts part of the internal air to the outside of the barn, and the first A dust removing filter for removing dust in the internal air taken out by the exhaust means, a first deodorizing filter for converting the internal air that has passed through the dust removing filter into the purified air, and returning the purified air into the barn Livestock environment preservation equipment characterized by having purified air blowing means. 5. The livestock environment preservation facility according to claim 4, wherein the first deodorizing filter includes a plurality of upstream processing units and downstream processing units that are bent at a central portion and inclined with respect to the flow direction of the internal air. Is formed by connecting the ends of the deodorizing and sterilizing elements adjacent to each other along the flow direction of the internal air,
Each of the upstream processing section and the downstream processing section is housed in a first flat plate-like air-permeable container disposed so as to intersect the flow direction of the internal air, and in the first flat plate-shaped air-permeable container. A livestock environment conservation facility comprising: a first granular processing material that adsorbs malodorous substances in the internal air and decomposes the first photocatalyst supported on the surface. 6. The livestock environment preservation facility according to claim 5, wherein the first flat breathable container is divided into a plurality of sections in plan view. The livestock environment preservation facility according to claim 5 or 6, wherein the first granular treatment material is composed of any one or a combination of activated carbon pellets, zeolite pellets, sepiolite pellets, and silica gel pellets. Livestock environment conservation equipment. The livestock environment maintenance facility according to any one of claims 1 to 7, wherein the ventilation device includes an intake chamber that takes outside air from the outside of the barn, and outside air introduction that guides outside air from the intake chamber into the barn. And an exhaust chamber for releasing the internal air in the barn from the discharge port. The exhaust chamber allows the internal air in the barn to pass through the exhaust chamber and be discharged from the discharge port. And a second deodorizing filter that performs the second deodorizing process when the internal air is discharged to the outside. 9. The livestock environment preservation facility according to claim 8, wherein the second deodorizing filter is disposed in the exhaust chamber so as to intersect the flow direction of the internal air, and the second flat breathable container. A second granular processing material that is housed in the flat air-permeable container and that captures malodorous substances in the internal air and is decomposed by the second photocatalyst supported on the surface, and further, A livestock environment preservation facility characterized in that a massive malodor adsorbing material that adsorbs malodorous substances contained in the internal air is disposed upstream of the second flat plate-shaped breathable container. The livestock environment preservation facility according to claim 9, wherein the second flat plate-shaped breathable container is divided into a plurality of sections in plan view. The livestock environment preservation facility according to claim 9 or 10, wherein the size of the second granular treatment material is smaller than the size of the malodorous adsorbent, and the second granular treatment material and the malodorous adsorbent are activated carbon pellets, A livestock environment preservation facility comprising one or more of zeolite pellets, sepiolite pellets, and silica gel pellets. The livestock environment conservation equipment according to any one of claims 1 to 11, wherein the livestock house in which the opening is sealed is a windowless livestock house.

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