WO2020040244A1 - Animal pen, odor reduction system for animal pen, deodorization device, and ventilation system for animal pen - Google Patents

Abstract

Provided are an animal pen, an odor reduction system therefor, etc., with which manufacturing costs and installation costs can be reduced. The odor reduction system (1) comprises: an animal pen (2) having a floor (3) through which the excreta of livestock can drop, and a water storage part (4) which is formed under the floor and stores water used to reduce the odor of the received excreta that has dropped; an aeration tank (21) which aerates water mixed with excreta discharged from the water storage part (4); a precipitation tank (31) in which aeration-treated sludge that has been aerated in the aeration tank (21) is separated by precipitation; and a ring flow passage (41) for circulating the supernatant from the precipitation tank (31) to the water storage part (4).

Description

Livestock barn, livestock barn odor reduction system and deodorizing device, and livestock barn ventilation system

The present invention relates to a livestock barn, a livestock barn odor reduction system, a deodorizing device, and a livestock barn ventilation system.

豚 In general, pig houses are provided with a sloping floor so that the manure of pigs can be dropped directly under the floor. As a conventional pig barn structure, a mechanical scraper is installed in the underfloor pit of the floor, and urine is mainly discharged through a urine groove or a urine groove pipe, and feces are scraped out with a scraper to separate feces and urine. is there. However, this structure has the following problems.

(1) Cold air enters from the place where feces are discharged from the scraper pit, such as in winter. There is a method of closing with curtains or damper shutters, but it is difficult to completely shut off the air due to the large number of operations and the structure of the facility. The incoming air contains odors and ammonia and can cause piglet disease.

(2) Since the manure reservoir structure under the floor is made of concrete, there is a problem that manure tends to remain on the fine irregularities on the concrete surface at the time of scraping out, leaving an odor and propagation of various germs. Since concrete is easily corroded by manure, if the surface irregularities become rough due to corrosion, it becomes more and more difficult to scrape manure that has entered the irregularities. Dirt stuck on the concrete surface should be cleaned with a high pressure washer. High pressure water wears concrete because it cannot be removed unless the pressure is high.

On the other hand, Patent Literature 1 describes a technique in which a methane fermentation tank is arranged under the floor and manure is supplied to the methane fermentation tank. Further, Patent Literature 2 discloses a technique in which an activated sludge purifying tank is disposed under a floor, and manure is dropped into the activated sludge purifying tank. A device using a fixed filter is known as a device for deodorizing the odor exhausted from the barn.

On the other hand, Patent Literature 3 discloses an invention relating to a deodorizing device for deodorizing odors discharged from a barn or the like. According to the invention, the odor is taken in from one opening of the housing, passed through a deodorizing material (filter medium) provided inside while water is sprinkled from the upper part, and the deodorized air is exhausted from the other opening. Things.

JP-A-62-2524 JP-A-2002-84908 JP 2011-56339 A

However, arranging a methane fermentation tank or an activated sludge purifying tank under the floor increases production costs and installation costs, and increases the size of the piggery itself.

向上 In order to improve the odor reduction efficiency, it is conceivable to increase the filter medium in the height direction of the housing and set the contact distance between the filter medium and the odor to be long. However, when the filter medium is filled in the height direction, the height of the deodorizing device becomes large, and there is a problem that it is difficult to secure an installation place and to transport and perform the deodorizing device.

配置 In addition, arranging a methane fermentation tank or an activated sludge purifying tank under the floor increases production costs and installation costs, and causes a problem that the pig house itself becomes large. In addition, the conventional livestock barn is insufficiently provided with measures against infectious diseases from outside wild birds and beasts, and requires a ventilation system having excellent hermeticity. Further, the deodorizing function of the conventional deodorizing device is insufficient, and a device using a fixed filter has a problem that maintenance work such as cleaning of the filter is troublesome.

An object of the present invention is to provide a livestock barn capable of reducing manufacturing costs and installation costs, and an odor reduction system therefor.
It is another object of the present invention to provide a deodorizing apparatus and a system for reducing odor in livestock pens, which can reduce the height of the apparatus while increasing the odor reducing efficiency.
Another object of the present invention is to provide a livestock barn excellent in ventilation function and economy and its ventilation system.

In order to solve the problem, the present invention is characterized by comprising a floor on which manure of livestock can fall, and a water storage part formed under the floor and storing water for reducing odor to receive the dropped manure. And shelter.

ADVANTAGE OF THE INVENTION According to this invention, since the water storage part which only stores water only needs to be arrange | positioned under a floor, installation cost can be reduced. For example, by installing a water reservoir made of FRP, it is possible to shut off outdoor air. Therefore, unlike the conventional system in which a mechanical scraper is installed, no air is blown from under the floor blown from the pit, so that the temperature can be easily controlled and the piglets can grow well.
By exhausting the odor under the floor using an overflow pipe or the like, the pig on the floor of the pig house becomes comfortable for the pig. At the time of cleaning, drain the overflow pipe and flush or wash all wastewater. For example, a water reservoir made of FRP can easily remove dirt, so that dirt can be removed even with low-pressure cleaning water, and there is no risk of wear deterioration due to cleaning. Also, there are few residual bacteria after washing. Then, after disinfecting and drying, a new water reservoir is filled with water and used again.

Further, according to the present invention, the water storage part has a substantially semicircular shape having an opening at an upper part in a side sectional view viewed from one direction, and is installed in a groove recessed in a building frame, and at least the water storage part is provided. In a state before being installed in the groove, the pair of side plates of the opening is formed in a substantially inverted C shape so as to increase the distance upward.

According to the present invention, the water reservoir can be manufactured economically, and the water reservoir can be easily installed irrespective of the construction error of the groove of the building frame.

In addition, the present invention is characterized in that a gap covering member that covers a gap between the groove and the side plate portion is provided below the floor.

According to the present invention, it is possible to reliably prevent manure from entering the groove from the gap between the groove and the side plate.

Further, in the present invention, the water storage portion has a pair of vertical side plate portions facing each other and a bottom plate portion formed in a V-shape in a side sectional view viewed from one direction. Has an open shape.

According to the present invention, the structure of the water storage section can be simplified.

Further, in the present invention, the water storage portion is configured to be divided in the one direction, and the divided portion is fastened by overlapping the stepped edge portions bulging outward, and then the sealing material is provided inside. It is characterized by being filled.

According to the present invention, when the length of the water storage portion is large, the water storage portion can be divided and configured with a simple structure.

距離 Further, it is desirable that the distance between the floor and the water surface in the water storage part is set to 50 cm or more.

Further, the present invention provides a livestock barracks comprising: a floor on which manure of livestock can fall; a water storage section formed under the floor to store odor-reducing water for receiving the dropped manure; and a water discharge section from the water storage section. An aeration tank for aerating the mixed manure mixed water, a sedimentation tank for sedimenting and separating the aerated sludge aerated in the aeration tank, and a circulation channel for recirculating the supernatant water of the sedimentation tank to the water storage part. The odor reduction system for livestock pens was characterized by this.

According to the present invention, since manure is diluted by the water in the water reservoir, the odor in the livestock barn is reduced. In addition, the manure mixed water is aerated in an aeration tank, and the supernatant water of the precipitation tank is returned to the water storage part, whereby the water can be reused as almost free of ammonia odor. Therefore, there is almost no need to use new tap water or the like, and the system is excellent in economic efficiency.

Further, the present invention is interposed between the water storage section and the aeration tank, deodorizes the manure mixed water discharged from the water storage section by spraying water, exhausts the odor to the atmosphere, and discharges the water treated water. It is characterized by comprising a deodorizing device for flowing into the aeration tank.

According to the present invention, the odor contained in the manure mixed water is provided by providing a deodorizing device for deodorizing the odor of the manure mixed water discharged from the water storage unit by spraying water, exhausting the odor to the atmosphere, and flowing the water sprayed to the aeration tank. Odor can be deodorized more efficiently.

The present invention is also characterized in that the supernatant water of the sedimentation tank is supplied as water for watering the deodorizing device.

According to the present invention, the supernatant water of the precipitation tank can be reused for the deodorizing device.

Further, the odor discharged from the animal barn is supplied to the aeration tank as air for aeration.

According to the present invention, odor can be effectively used as air for aeration, and odor reduction efficiency can be further improved.

を Further, there is provided a deodorizing device which deodorizes odor discharged from the barn by watering and supplies it to the aeration tank as air for aeration.

According to the present invention, the deodorizing efficiency can be further improved.

Further, the livestock barn is a tubular housing that is installed horizontally, a discharge pit that is swelled on the side surface of the housing and has an open / close lid for maintenance, and is provided in the discharge pit, and is configured to supply manure mixed water. An overflow pipe for overflowing, and an odor pipe for discharging odors from the barn, which is connected to a side of the housing between the floor and the water surface at a position away from the discharge pit. It is characterized by doing.

Further, the livestock barn is a tubular housing that is installed horizontally, a discharge pit that is swelled on the side surface of the housing and has an open / close lid for maintenance, and is provided in the discharge pit, and is configured to supply manure mixed water. A non-fixed livestock barn having an overflow pipe for overflowing, a discharge path for discharging the manure mixed water overflowing from the overflow pipe, and a sealed pump tank connected to the discharge path and for sucking the internal odor. And a drain trap is formed around the discharge port of the discharge path inside the closed pump tank so that a part of the manure mixed water accumulates.

(4) The odor of the aeration tank is subjected to soil deodorization treatment.

Further, in order to solve the above problem, the present invention is a deodorizing apparatus configured to juxtapose a plurality of odor filtration units side by side, to reduce the odor discharged from the barn, wherein the odor filtration unit is placed horizontally A first filtration chamber and a second filtration chamber provided in the housing and partitioned by a partition perpendicular to the axial direction of the housing; and the first filtration chamber. A water sprinkling section provided at an upper part of each of the first and second filtration chambers; a filter medium provided at a middle part of each of the first and second filtration chambers; and a first and second filtration chambers A communication part provided at a lower part of the first communication chamber and communicating with the second filtration chamber; an air supply part provided at one end of the housing; and a communication part provided at the other end of the housing. And an exhaust part, and the odor flowing from the air supply part falls from the water sprinkling part. And filtering through the filter medium and exhausting from the exhaust unit, and passing the odor that has passed through the filter medium of the first filtration chamber into the filter medium of the second filtration chamber via the communication unit. It is characterized by.

According to such a configuration, the filter media are provided in the first filtration chamber and the second filtration chamber arranged side by side in the axial direction of the housing, and the odor is passed through the communication section to the first filtration chamber and the second filtration chamber, respectively. Thus, the odor reduction efficiency can be increased while suppressing the height of the housing. Further, by arranging the odor filtering units in the axial direction of the housing, the deodorizing reduction efficiency can be further improved.

A filter medium washing air diffuser for supplying air for washing the filter medium to the filter medium, and a normal water level between the bottom of the housing and the partition wall so as to form the communication portion during normal deodorization; It is preferable to set a washing water level at a position where the filter medium is flooded when the filter medium is washed, and to wash the filter medium with air supplied from the filter medium washing diffuser.

According to this configuration, the filter medium can be easily washed.

ろ In addition, it is preferable that the filter medium cleaning air diffuser is provided with a forked portion that opens from a lower end side of the partition wall toward each of the filter media in the first filtration chamber and the second filtration chamber.

According to this configuration, the filter medium can be efficiently cleaned with a small number of parts.

In addition, a deodorizing device according to claim 15, a livestock bark comprising a floor on which manure of the livestock can fall, and a water storage portion formed under the floor and storing water for reducing odor to receive the dropped manure, An aeration tank for aerating the manure mixed water discharged from the water storage unit, a sedimentation tank for sedimenting the aerated sludge aerated in the aeration tank, and refluxing the supernatant water of the sedimentation tank to the water storage unit. An annular flow path, wherein the deodorizing device is interposed between the water storage unit and the aeration tank, and sprays the odor of the manure mixed water discharged from the water storage unit from the water spray unit. And exhausted to the atmosphere, and the sprinkling treated water flows into the aeration tank.

According to this configuration, since the manure is diluted by the water in the water reservoir, the odor in the barn is reduced. In addition, the manure mixed water is aerated in an aeration tank, and the supernatant water of the precipitation tank is returned to the water storage part, whereby the water can be reused as almost free of ammonia odor. Therefore, there is almost no need to use new tap water or the like, and the system is excellent in economic efficiency. In addition, the odor contained in the manure mixed water can be more efficiently reduced by deodorizing the odor of the manure mixed water discharged from the water reservoir by spraying water, exhausting the odor to the atmosphere, and flowing the sprinkled water to the aeration tank. It can be deodorized.

It is preferable that the deodorizing device deodorizes the odor discharged from the livestock barn by watering and supplies the odor to the aeration tank as air for aeration.

According to this configuration, the odor can be effectively used as air for aeration, and the odor reduction efficiency can be further improved.

Further, in order to solve the problem, the present invention is a ventilation system for a barn provided with a deodorizing device communicating with the inside of the barn, wherein the deodorizing device has a water sprinkling unit for watering the air flowing from the air supply port. A filter medium which is fixedly filled so as to filter air sprinkled in the water sprinkling section, and a filter medium which is provided below the filter medium and is jetted with air to the filter medium immersed in water to stir the filter medium. And a diffuser.

According to the present invention, since the filter medium to be filled without being fixed is agitated and washed in the air diffuser, clogging and replacement of the filter medium do not occur, and a simple and excellent deodorizing efficiency ventilation system for livestock pens is provided.

ADVANTAGE OF THE INVENTION According to this invention, it becomes the livestock barn which can reduce a manufacturing cost and installation cost, and its odor reduction system.
Further, according to the present invention, there is provided a deodorizing apparatus and an odor reducing system capable of reducing the height of the apparatus while increasing the odor reducing efficiency.
Further, according to the present invention, a livestock barn excellent in ventilation function and economy and a ventilation system thereof are provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram of the odor reduction system of the livestock barn which concerns on this invention. It is the external appearance perspective view which looked up at the water storage part from the lower part. It is sectional drawing around the division part of a water storage part. It is sectional drawing of a water storage part. It is a front view of an emergency ventilation device. It is an external appearance perspective view around a discharge path. It is sectional drawing of the modification of a water storage part. It is the external appearance perspective view which looked up the modification of the water storage part from below. It is sectional drawing of the simple substance of the modification of a water storage part. It is sectional drawing around the division part of the modification of a water storage part. It is a lineblock diagram of a deodorizing device. It is an appearance perspective view of a livestock barn. It is a lineblock diagram of an odor reduction system of a livestock barn concerning a 2nd embodiment. It is a top view of a supernatant water storage chamber. It is a lineblock diagram of an odor reduction system of a livestock barn concerning a 3rd embodiment. It is explanatory drawing of the drain trap of the discharge path provided in the inside of the closed pump tank. It is a lineblock diagram of an odor reduction system of a livestock barn concerning a 4th embodiment. It is a lineblock diagram of an odor reduction system of a livestock barn concerning a 5th embodiment. It is a schematic side view which shows the deodorizing device of the odor reduction system of the livestock barn concerning 6th Embodiment. It is a schematic plan view which shows the deodorizing device of the odor reduction system of the livestock barn concerning 6th Embodiment. FIG. 21 is a sectional view taken along line AA of FIG. 20. FIG. 21 is a sectional view taken along line BB of FIG. 20. It is a lineblock diagram of an odor reduction system of a livestock barn concerning a 7th embodiment. It is explanatory drawing of the deodorizing apparatus which concerns on 8th Embodiment, (a) and (b) are a top view and side sectional drawing, respectively. It is a sectional side view of a deodorizing device concerning an 8th embodiment, and shows a state where a filter medium is being stirred and washed. It is a lineblock diagram of a ventilation system concerning an 8th embodiment, (a) shows the case where exhaust from a livestock house is processed by a deodorizing device, and (b) shows the case where air processed by a deodorizing device is supplied to a livestock barn. It is sectional drawing of the livestock barn concerning 8th Embodiment. It is an appearance perspective view of a livestock barn concerning an 8th embodiment. It is sectional drawing of the modification of the livestock barn concerning 8th Embodiment.

In FIG. 1, the odor reduction system 1 for a barn according to the present invention includes a barn 2, an aeration tank 21, a sedimentation tank 31, and a circulation channel 41. The livestock barn 2 is, for example, a pig barn. The building type of the barn 2 may be a fixed barn that is a fixed building such as a steel bar, a wooden structure, a prefabricated building, or a non-fixed barn that can be installed by being moved to an arbitrary ground.

"Fixed stable 2A"
The fixed animal house 2A includes a floor 3 on which manure of livestock can fall, and a water storage section 4 formed under the floor and made of FRP for storing odor reducing water for receiving the dropped manure. The floor 3 is, for example, a snowboard or a punched wire mesh, and the excrement falls under the floor through the slits and the mesh.

As shown in FIG. 4, the water storage section 4 has a pair of vertical side plate sections 5 opposed to each other and a bottom plate section 6 formed in a V-shape when viewed in a side sectional view viewed from one direction. And has an open top. The fallen manure is diluted in the water accumulated in the water storage part 4, and accumulates in the water storage part 4 as manure mixed water with reduced odor. At the end of the bottom plate portion 6, a discharge pit 7 (FIG. 2) for discharging manure mixed water is bulged downward. An overflow pipe 8 for flowing the manure mixed water is provided in the water storage section 4.

場合 When the water storage unit 4 has a long dimension in one direction, the water storage unit 4 may be divided into the one direction as shown in FIG. As shown in FIG. 3, the stepped edge portions 9 bulging outward overlap with each other and are fastened by riveting or the like, and then the sealing material 10 is filled inside. As the sealing material 10, FRP can be used. With the above-described shape, the manufacturing process and the installation process can be simplified while taking into account the height restrictions in the road regulations in transporting by truck or trailer. Although the water storage section 4 is made of FRP in this embodiment, it may be formed of another material such as another resin or metal.

"Modified example of fixed barn"
With reference to FIGS. 7 to 10, a modified example of the fixed livestock barn will be described. The fixed livestock barn 2C also includes a floor 3 on which the excrement of livestock can fall, and a water storage section 4 made of FRP formed under the floor. The water storage part 4 of the fixed livestock house 2C includes a tank housing 40 having a substantially semicircular shape having an opening at an upper part in a side sectional view viewed from one direction. The tank housing 40 having such a shape can be easily manufactured by, for example, halving a substantially cylindrical (elliptical) FRP housing formed by a filament winding method. As shown in FIG. 7, the tank housing 40 is installed, for example, in a groove 46 formed in a building frame. The groove 46 is, for example, recessed in a rectangular section on the floor F of a pig house and is cured with concrete.

As can be seen from FIG. 9, the tank housing 40 includes a bottom plate portion 40A formed in an arc-shaped cross section, and a pair of linear side plate portions 40B formed at both ends of the bottom plate portion 40B. The bottom plate portion 40A and the side plate portion 40B are integrally formed by the filament winding method or the like as described above. As shown in FIG. 8, a discharge pit 42 for discharging the manure mixed water is swelled downward at the bottom of the tank housing 40. An overflow pipe (not shown) for overflowing the manure mixed water is provided in the tank housing 40, and the manure mixed water is discharged to a predetermined outside through the discharge pit. Further, a support pedestal 43 that is in contact with the bottom surface of the groove 46 is provided at the bottom of the tank housing 40.

に As shown in FIG. 9, at least in a state before being installed in the groove 46, the pair of side plate portions 40B are formed in a substantially inverted C shape so that the interval increases as going upward. By forming the pair of side plate portions 40B in a substantially inverted C shape as described above, even if there is a construction error in the width dimension of the groove 46, as shown in FIG. In addition, the side plate portion 40B can be elastically deformed inward as indicated by the arrow by the groove wall of the groove 46 and can be installed. Thereby, regardless of the construction error of the groove 46, the side plate portion 40 </ b> B is brought into close contact with the side wall of the groove 46, and the tank housing 40 can be set in the groove 46 with good fit. Therefore, it is possible to prevent manure from entering the groove 46 from the gap between the side wall of the groove 46 and the side plate portion 40B.

Further, if a gap covering member 44 is provided below the floor 3 to cover the gap between the groove wall of the groove 46 and the side plate portion 40B, excreta enters the groove 46 from the gap between the side wall of the groove 46 and the side plate portion 40B. Intrusion can be reliably prevented. An appropriate material such as a metal material, a resin material, and a cloth material can be selected as the material of the gap covering member 44.

In the case where the size of the tank housing 40 in one direction is long, the tank housing 40 is divided into two parts. As shown in FIG. Fill 10 In addition, as the fixed livestock house 2C, as shown in FIG. 12, a plurality of water storage units 4 may be arranged in one pig house. The same applies to the fixed pens 2A.

As described above, according to the present invention, the water storage section 4 for storing water can be simply arranged below the floor 3, so that the installation cost can be reduced. By installing the water reservoir 4 made of FRP, it can be shielded from outdoor air. Therefore, unlike the conventional system in which a mechanical scraper is installed, no air is blown from under the floor blown from the pit, so that the temperature can be easily controlled and the piglets can grow well. Further, since the water reservoir 4 made of FRP is easy to remove dirt, the dirt is removed even with low-pressure cleaning water, and there is no fear of wear deterioration due to cleaning. Also, there are few residual bacteria after washing. Then, after disinfecting and drying, the water is newly filled in the water storage unit 4 and used again.

"Non-fixed barn 2B"
In FIG. 1, the non-fixed stable 2B includes a tubular housing 11 made of FRP and installed horizontally. The applicant of the present invention has already applied for a structure having this type of housing 11 in Japanese Patent Application Laid-Open No. 2008-79599. The non-fixed barn 2B also has a floor 3 on which manure of livestock can fall, and water can be stored under the floor as a water storage unit 4. A discharge pit 12 for discharging the manure mixed water is swelled on one side surface of the housing 11. As shown in FIG. 6, in the discharge pit 12, an overflow pipe 13 for overflowing the manure mixed water is provided. Although the housing 11 is made of FRP in this embodiment, it may be formed of another material such as another resin or metal. The housing 11 may be made of reinforced concrete (RC) when a large-scale facility or a large capacity is used.

In the fixed pens 2A and 2C and the non-fixed pens 2B, it is preferable that the distance H (see FIG. 7) between the floor 3 and the water surface in the water storage unit 4 be set to 50 cm or more. When the distance H is less than 50 cm, the livestock is easily cooled by cold air from the surface of the water, and the odor easily reaches the floor 3 to affect the livestock.

"Aeration tank 21, sedimentation tank 31"
The aeration tank 21 and the precipitation tank 31 of the present embodiment are both set on the ground. In FIG. 1, the manure mixed water discharged from the discharge pit 7 of the fixed pens 2A and the discharge pit 12 of the non-fixed pens 2B is sent to the aeration tank 21 via the discharge path 14. FIG. 1 shows an embodiment in which the aeration tank 21 is divided into a first aeration tank 21A and a second aeration tank 21B. The manure mixed water from the discharge path 14 is first sent to the first aeration tank 21A. The first aeration tank 21A is a tank dedicated to aeration. The manure mixed water is agitated by the air injected from the air injector 22 and aerated, and the ammonia odor is reduced by aerobic decomposition.

処理 The treated sludge that has been aerated in the first aeration tank 21A is sent to the second aeration tank 21B and is again aerated. Thereby, the ammonia smell is further reduced. The treated sludge that has been aerated in the second aeration tank 21B is sent to a settling tank 31, and the sludge settled in the settling tank 31 is sent to a sludge storage tank 32. The sludge discharged from the sludge storage tank 32 is subjected to dehydration treatment by, for example, a dehydrator 33 and used for compost or the like. On the other hand, the supernatant water in the sedimentation tank 31 is supplied to the water storage section 4 of the fixed livestock house 2A or the non-fixed livestock house 2B via the circulation channel 41.

In the present embodiment, the second aeration tank 21B, the sedimentation tank 31, and the sludge storage tank 32 have a structure defined by a partition plate in one housing, but may have a structure including separate housings. Good. Further, only one aeration tank 21 may be provided.

According to the odor reduction system 1 having the above configuration, since the excrement is diluted by the water in the water storage unit 4, the odor in the barn 2 is reduced. In addition, the manure mixed water is aerated in the aeration tank 21 and the supernatant water of the sedimentation tank 31 is returned to the water storage section 4, so that the water can be reused as almost free of ammonia odor. Therefore, there is almost no need to use new tap water or the like, and the system is excellent in economic efficiency.

"Deodorizing device 70"
The deodorizing device 70 will be described with reference to FIG. The deodorizing device 70 is interposed between the water reservoir 4 and the aeration tank 21 (see FIG. 1). The deodorizing device 70 is a device for deodorizing the odor of the manure mixed water discharged from the water storage unit 4 by spraying water, exhausting the odor to the atmosphere, and flowing the water sprayed water to the aeration tank 21.

糞 The manure mixed water in the water storage section 4 of the fixed pens 2C and the non-fixed pens 2B flows from the overflow pipe 13 to the discharge path 14. The pipe constituting the discharge path 14 is buried in the ground, for example. One end of an odor pipe 83 extending upward and extending to the ground is connected to a middle of the discharge path 14. One end of the exhaust pipe 71 faces below the floor 3 of the fixed barn 2C or the non-fixed barn 2B. The other end of the exhaust pipe 71 is connected in the middle of the odor pipe 83. The other end of the odor tube 83 is connected to a deodorizing device 70 installed on the ground.

は In the deodorizing device 70, the inside of the housing 84 is defined in two spaces by a vertical partition plate 85. The two spaces communicate below the partition plate 85. A filter medium 74 is filled in the middle of one space in the vertical direction. The other end of the odor tube 83 faces the space above the filter medium 74, and a watering nozzle 73 is arranged. The watering nozzle 73 is attached to the water supply pipe 72 connected to the annular flow path 41 or a separate fresh water source. The watering nozzle 73 is disposed downward so as to spray water toward the lower filter medium 74. The nozzle shape, arrangement shape, number, and the like of the watering nozzles 73 are not particularly limited.

Below the filter medium 74, a filter medium cleaning air diffuser 75 for cleaning the filter medium 74 is disposed. The filter medium cleaning air diffuser 75 has a plurality of air injection holes opening upward, and air is injected from the air injection holes toward the filter medium 74 to wash the filter medium. The filter medium washing and diffuser 75 is connected to an air compressor (not shown) or the like.

排 気 At the top of the other space, an exhaust device 80 such as a ventilation fan or an axial fan is attached. On the other space side, one end of a discharge pipe 77 provided with an on-off valve 76 faces downward, and one end of an overflow pipe 79 provided with an on-off valve 78 faces upward. The opening / closing valve 76 is in an open state during normal operation, and is in a closed state when cleaning the filter medium 74. The other end of the overflow pipe 79 is connected to the discharge pipe 77. The other end of the discharge pipe 77 is connected to a sealed pump tank 81. The end of the discharge path 14 is also connected to the sealed pump tank 81. The sealed pump tank 81 and the aeration tank 21 (see FIG. 1) are connected by a discharge pipe 82.

As described above, the odor generated from the manure mixed water flowing through the discharge passage 14 flows through the odor pipe 83 into the housing 84 of the deodorizing device 70. The odor below the floor 3 also flows through the exhaust pipe 71 and the odor pipe 83 into the housing 84 of the deodorizing device 70. In the housing 84, the odor passes through the atmosphere sprayed by the watering nozzle 73 and is efficiently deodorized by passing through the filter medium 74, and is exhausted to the atmosphere by the exhaust device 80. The sprinkling water dropped from the filter medium 74 is discharged to the closed pump tank 81 via the discharge pipe 77 and flows to the aeration tank 21 (see FIG. 1) via the discharge pipe 82.

As described above, the odor of the manure mixed water discharged from the water reservoir 4 is interposed between the water reservoir 4 and the aeration tank 21, deodorized by spraying water, exhausted to the atmosphere, and aerated with the water sprayed water. With the configuration provided with the deodorizing device 70 that flows into the tank 21, the odor contained in the manure mixed water can be more efficiently deodorized. Further, if the supernatant water of the precipitation tank 31 is supplied as water for sprinkling the deodorizing device 70 through the annular channel 41, the supernatant water of the precipitation tank 31 can be reused for the deodorizing device, which is economical.

"Emergency ventilation device 51"
Next, the emergency ventilation device will be described. In recent years, pig houses have a substantially closed structure so that odors do not leak to the outside except for a ventilation part. Ventilation is performed almost always, and outside air is taken into the house by, for example, a ventilation fan and exhausted from a predetermined exhaust unit. However, if the ventilation fan stops due to a power failure, the pigs die due to lack of oxygen due to the hermetically sealed interior. For this reason, in a piggery, an emergency ventilation device that performs an emergency ventilation function such as a power failure is provided separately from a normal ventilation device. Hereinafter, a form in which the emergency ventilation device is attached to the non-fixed stable 2B will be described.

In FIG. 5, the emergency ventilation device 51 includes a housing 52 attached to the outside of one side surface 2C of the non-fixed stable 2B. An electromagnetic solenoid 53 is provided in the housing 52 so that a rod 53A extends downward. In the electromagnetic solenoid 53, the rod 53A contracts when energized, and the rod 53A extends when non-energized. An upper end of a wire 56 is connected to a lower end of the rod 53A via a connecting member 54 and a coil spring 55. The wire 56 extends further downward from the bottom of the housing 52, and a weight 57 is attached to the lower end. A vertically extending locking bar 58 is attached around the lower portion of the wire 56.

矩形 A rectangular emergency ventilation window is formed on the side surface 2C of the non-fixed stable 2B, and an emergency ventilation door 59 is attached to normally close the emergency ventilation window. The emergency ventilation door 59 is attached to the side surface 2C so as to be opened and closed by a spring-biased hinge 60, and the locking bar portion 58 is normally attached to the locked hole 61 of the emergency ventilation door 59. Inserted from below.

FIG. 5 shows a normal state, in which the rod 53 </ b> A of the electromagnetic solenoid 53 contracts due to energization, and the locking rod 58 is inserted into the locked hole 61 of the emergency ventilation door 59 from below. It is in the inserted state. Then, when the electromagnetic solenoid 53 is de-energized due to a power failure or the like, the rod 53A extends downward, the wire 56 tensioned by the weight 57 is lowered, and the locking rod 58 is pulled out of the locked hole 61. Thereby, the emergency ventilation door 59 is opened by the spring urging force of the hinge 60, and the emergency ventilation window is opened.

According to the emergency ventilation device 51 described above, emergency ventilation can be reliably performed with a simple configuration by using the electromagnetic solenoid 53. In addition, the emergency ventilation device 51 can also be attached to the fixed livestock house 2A.

"T-type pipe joint 17"
When a plurality of non-fixed livestock stalls 2B are arranged side by side, it is preferable that the manure mixed water discharged from each discharge pit 12 be collected in a continuous drain pipe. On the other hand, the place where the piggery is installed is not limited to a flat ground, but is often a field having unevenness. In this case, if there is a deviation in the height direction between the adjacent pig houses, there is a problem that it takes time to connect the drainage pipes.

に 対 し To solve this problem, as shown in FIG. 6, the discharge passage 14 is provided with a T-shaped pipe joint 17. The lower end of the overflow pipe 13 has a protruding portion 15 that protrudes horizontally from the side surface of the discharge pit 12 to the outside. A T-shaped pipe joint 17 is connected to the protrusion 15 via an elbow pipe 16. Assuming that two of the three connection ports of the T-shaped fitting are linearly connected to each other at 17A and 17B and the other connection port orthogonal to these is 17C, the elbow pipe 16 has a connection port 17C. Are linked. As a result, the connection ports 17A and 17B are in a state in which the connection ports 17A and 17B can be adjusted to rotate about a substantially horizontal axis about the connection port 17C, and even if there is a displacement in the height direction between adjacent non-fixed stables 2B, The T-shaped pipe joints 17 can be easily connected to each other by the pipe 18.

"Second embodiment"
A second embodiment will be described with reference to FIG. The second embodiment relates to an odor reduction system for the non-fixed stable 2B. The manure mixed water collected at the bottom of the non-fixed stable 2B flows from the overflow pipe 13 to the discharge path 14. The downstream end of the discharge path 14 is connected to a sealed pump tank 81 as in FIG. The sealed pump tank 81 is connected to the first aeration tank 21A via a discharge pipe 82.

In FIG. 11, one end of the odor tube 83 is connected in the middle of the discharge path 14, and the other end of the odor tube 83 is connected to the deodorizing device 70. In this configuration, when the exhaust device 80 of the deodorizing device 70 operates, the inside of the odor pipe 83 and the exhaust path 14 is sucked, and a negative pressure is generated at the opening of the overflow pipe 13. As shown in FIG. 6, the overflow pipe 13 is arranged in the discharge pit 12, and an openable lid member for maintenance is provided above the discharge pit 12. Therefore, when a negative pressure is generated in the opening of the overflow pipe 13, outside air is sucked into the non-fixed stable 2B from the gap between the main body of the discharge pit 12 and the lid member. Since piglets are particularly vulnerable to cold, it is a problem that cold air in winter flows into the non-fixed stable 2B.

To solve this problem, in the second embodiment, as shown in FIG. 13, one end of the odor tube 83 is connected to the non-fixed livestock barn 2B between the floor 3 (FIG. 1) and the water surface at a position away from the discharge pit 12. Connected to the side. The other end of the odor tube 83 is connected to the deodorizing device 70A. A valve 83A is provided in the middle of the odor tube 83.

The basic configuration of the deodorizing device 70A is the same as that of the deodorizing device 70 shown in FIG. 11, and the inside of the housing 84 is divided into two spaces by a vertical partition plate 85. The two spaces communicate below the partition plate 85. A filter medium 74 is filled in the middle of one space in the vertical direction. The other end of the odor tube 83 faces the space above the filter medium 74, and a watering nozzle 73 is arranged. The watering nozzle 73 is disposed downward so as to spray water toward the lower filter medium 74. The nozzle shape, arrangement shape, number, and the like of the watering nozzles 73 are not particularly limited. In FIG. 11, the watering nozzle 73 is attached to the water supply pipe 72 of the return channel 41, but may be attached to a pipe 86 that circulates water collected at the bottom of the housing 84 by a pump as shown in FIG. 13.

Below the filter medium 74, a filter medium cleaning air diffuser 75 for cleaning the filter medium 74 is disposed. The filter medium cleaning air diffuser 75 has a plurality of air injection holes opening upward, and air is injected from the air injection holes toward the filter medium 74 to wash the filter medium. The filter medium cleaning air diffuser 75 is connected to a blower 87.

最 上 The uppermost part on the other space side is connected to the aeration tank 21 via the exhaust pipe 88. The exhaust pipe 88 is provided with a mist separator 89 and a roots blower 90 in order from the side near the deodorizing device 70A. Further, on the other space side of the deodorizing device 70A, a makeup water pipe 91 and a back washing pipe 92 are connected. A drain pipe 93 is connected to the bottom of the housing 84.

構成 The structure of the aeration tank 21 is the same as that shown in FIG. 1, and is divided into a first aeration tank 21A and a second aeration tank 21B. The first aeration tank 21A may be a single tank, a plurality of tanks communicated as shown in FIG. 13, or a plurality of tank chambers defined by a partition plate in one housing as shown in FIG. May be provided. The second aeration tank 21B is arranged in one housing together with a settling tank 31 and a sludge storage tank 32 defined by a partition plate.

The odor sucked into the exhaust pipe 88 from the deodorizer 70A by the operation of the roots blower 90 is supplied to the aeration tank 21 as aeration air after mist (fine water droplets) is removed by the mist separator 89. The manure mixed water is agitated by the aeration air and subjected to aeration treatment, and the aerobic decomposition reduces the ammonia odor. The aeration tank 21 to be supplied may be both the first aeration tank 21A and the second aeration tank 21B, or may be supplied to either one by selecting a valve, for example. Absent.

処理 The treated sludge aerated in the second aeration tank 21B is sent to the settling tank 31, and the sludge settled in the settling tank 31 is sent to the sludge storage tank 32. The sludge discharged from the sludge storage tank 32 is subjected to dehydration treatment by, for example, a dehydrator 33 and used for compost or the like. On the other hand, the supernatant water in the settling tank 31 is stored in the supernatant water storage chamber 94. As shown in FIG. 14, the supernatant water storage chamber 94 is divided into a first storage chamber 94A communicating with the settling tank 31 by a partition plate 95, and a second storage chamber 94B communicating with the first storage chamber 94A via a valve 96. And a third storage chamber 94C that communicates with the first storage chamber 94A via a valve 97. The water in the first storage chamber 94A selectively flows into the second storage chamber 94B and the third storage chamber 94C by opening and closing the valves 96 and 97.

The supernatant water that has flowed into the second storage chamber 94B is supplied to the water storage section 4 of the non-fixed stable 2B by the pump 98 via the return channel 41. The supernatant water flowing into the third storage chamber 94C is used as, for example, a liquid fertilizer via a drain pipe 99 or sent to an existing septic tank. Thereby, the supernatant water can be effectively used according to the situation.
In addition, the blower 87 supplies air to the filter medium cleaning air diffuser 75 of the deodorizing device 70A via the air supply pipe 100, and supplies air for aeration to the first storage chamber 94A via the air supply pipe 101. I have. Thereby, the supernatant water can be further purified.

As described above, if the odor discharged from the barn 2 is supplied to the aeration tank 21 as air for aeration, the odor can be effectively used as air for aeration, and the efficiency of odor reduction can be increased. it can. Further, by providing the deodorizing device 70A, the odor reduction efficiency can be further enhanced.

Further, in the present embodiment, the livestock barn 2 includes an FRP tubular housing 11 installed horizontally, a discharge pit 12 swelled on the side surface of the housing 11 and having a maintenance opening / closing lid, and a discharge pit. 12 and an overflow pipe 13 for overflowing the manure mixed water, the odor pipe 83 discharging the odor from the non-fixed pens 2B. , Between the floor 3 and the water surface. Thus, for example, even if a negative pressure is generated in the odor tube 83 through the deodorizing device 70A by the operation of the roots blower 90 as in the present embodiment, the odor tube 83 is attached at a position away from the discharge pit 12. Due to the influence of the negative pressure, there is no problem that outside air is sucked into the non-fixed stable 2B through the gap between the main body of the discharge pit 12 and the lid member. Therefore, the cold air in winter does not flow into the non-fixed stable 2B and does not affect the piglets.

"Third embodiment"
A third embodiment will be described with reference to FIG. The odor reduction system according to the third embodiment includes a plurality of non-fixed pens 2B and fixed pens 2C. The manure mixed water discharged from the overflow pipe 13 of each fixed livestock barn 2C is collected in the discharge path 14 and sent to the sealed pump tank 81. The sealed pump tank 81 is connected to the first aeration tank 21A via a discharge pipe 82. An odor tube 102 is connected below each floor 3 of the non-fixed barn 2B, and an odor tube 103 is connected below each floor 3 of the fixed barn 2C. The downstream ends of the odor tubes 102 and 103 are connected to the discharge path 14. As a result, when the inside of the sealed pump tank 81 is sucked in, as will be described later, a negative pressure is generated in the discharge passage 14, and the odor under the floor of each barn is sucked into the odor tubes 102 and 103 and flows into the discharge passage 14. Flows. Negative pressure is also generated in the opening of the overflow pipe 13 in the fixed barn 2C, but unlike the case of the non-fixed barn 2B, there is no problem that outside air flows in under the influence of the negative pressure. Each odor tube 102, 103 is provided with a valve 104 as necessary.

On the other hand, each overflow pipe 13 of the non-fixed stable 2B is connected to the sealed pump tank 81 via a discharge path 105 provided separately from the discharge path 14. As shown in FIG. 16 in an enlarged manner, around the discharge port 105A of the discharge path 105, a drain trap 106 is disposed inside the closed pump tank 81 so that a part of the mixed water of manure is stored. The figure shows a case where the drain trap is a U-shaped trap. By providing the drain trap 106, a part of the manure mixed water always stays around the discharge port 105A. Therefore, even if the inside of the sealed pump tank 81 is sucked, no negative pressure is generated in the discharge path 105. . Therefore, there is no problem that a negative pressure is generated in the opening of the overflow pipe 13 and the outside air is sucked into the non-fixed stable 2B through the gap between the main body of the discharge pit 12 and the lid member.

内部 The inside of the sealed pump tank 81 is connected to the aeration tank 21 via the exhaust pipe 107. The exhaust pipe 107 is provided with a mist separator 89 and a roots blower 90 in this order from near the sealed pump tank 81. The odor sucked into the exhaust pipe 107 from the sealed pump tank 81 by the operation of the roots blower 90 is supplied to the aeration tank 21 as aeration air after the mist (fine water droplets) is removed by the mist separator 89.

(4) The structures of the aeration tank 21 and the precipitation tank 31 are the same as those of the second embodiment, and thus the description thereof is omitted. In addition, the treated water treated by the dehydrator 33 may be returned to the closed pump tank 81 through the pipe 108. Further, the water in the circulation channel 41 may be returned to the closed pump tank 81 through the pipe 109.

"Fourth embodiment"
A fourth embodiment will be described with reference to FIG. The fourth embodiment is different from the third embodiment in that the odor is exhausted from the inside of the aeration tank 21 and the soil is deodorized. The other configuration is the same as that of the third embodiment.

一端 One end of the exhaust pipe 110 is connected to the first aeration tank 21A. The other end of the exhaust pipe 110 is connected to a mist separator 111, and the mist separator 111 is connected to a roots blower 112. A buried pipe 113 buried in the soil is connected to the roots blower 112. As described above, the odor sucked into the exhaust pipe 110 from the first aeration tank 21A by the operation of the roots blower 112 is exhausted from the buried pipe 113 to the soil after the mist (fine water droplets) is removed by the mist separator 111, The soil is deodorized. Thereby, the odor reduction efficiency can be further enhanced.

"Fifth embodiment"
A fifth embodiment will be described with reference to FIG. The fifth embodiment is different from the fourth embodiment in that a deodorizing device 70A is provided between a sealed pump tank 81 and a mist separator 89. The other configuration is the same as that of the fourth embodiment.

構成 The configuration of the deodorizing device 70A is the same as that shown in FIG. According to the present embodiment, the odor sucked into the exhaust pipe 107 from the sealed pump tank 81 by the operation of the roots blower 90 is deodorized by the deodorizing device 70A, and then the mist (fine water droplets) is removed by the mist separator 89. The air is supplied to the aeration tank 21 as aeration air. Thereby, the odor reduction efficiency can be further enhanced.

"Sixth embodiment"
With reference to FIGS. 19 to 22, a deodorizing device 201 of an odor reduction system for a livestock barn according to a sixth embodiment will be described. As shown in FIG. 19, the deodorizing device 201 is a device that reduces the odor discharged from the barn. The deodorizing device 201 is installed horizontally on the ground.

As shown in FIG. 19, the deodorizing device 201 includes a first odor filtration unit UT1, a second odor filtration unit UT2, a third odor filtration unit UT3, and a fourth odor filtration unit UT4. The deodorizing device 201 is formed symmetrically with respect to a center line X1 vertically passing through the middle in the longitudinal direction. That is, the first odor filtration unit UT1 and the third odor filtration unit UT3 have the same structure, and the second odor filtration unit UT2 and the fourth odor filtration unit UT4 have the same structure. Therefore, the first odor filtration unit UT1 and the second odor filtration unit UT2 on the left side of the center line X1 will be described.

The first odor filtration unit UT1 includes a housing 211, a first filtration chamber 213, a second filtration chamber 214, filter media 215 and 215, a communication unit 217, a water sprinkling unit 218, and a filter media cleaning and air diffusion unit 219. It is mainly configured to include. The housing 211 has a cylindrical portion 211a and side walls 211b and 211c formed at both ends in the axial direction (axial direction). The cylindrical portion 211a is common to the entire axial direction of the deodorizing device 201 and has a cylindrical shape. The material of the cylindrical portion 211a is not particularly limited, but is formed of, for example, FRP (Fiber Reinforced Plastic). The housing 211 may be made of reinforced concrete (RC) when a large-scale facility or a large capacity is used.

The side wall 211b is a disk-shaped wall that covers one end side of the cylindrical portion 211a. The side wall 211b is provided with an air supply unit 220 that takes in the odor of the barn into the housing 211. In the present embodiment, the odor pipe 83 whose end is attached to the barn is connected to the air supply unit 220. A fan or the like for taking in odor may be attached to the air supply unit 220 or a part of the odor pipe 83.

循環 A lower portion of the side wall 211b has a circulating water drain pipe 221, a replenishing water tank 222, an on-off valve 223, and a cleaning drain pipe 224, as shown in FIGS. Two circulating water drain pipes 221 are provided at the same height below the side wall 211b. The circulating water drain pipe 221 is a pipe vertically penetrating the side wall 211b. The circulating water drain pipe 221 is a pipe that maintains water stored in a storage part 225 (see FIG. 19) provided at the bottom of the housing 211 at a constant water level (normal water level WL1). That is, the water flowing down from the water sprinkling section 218 is stored in the storage section 225, and the water exceeding the normal water level WL1 is discharged from the circulating water drain pipe 221 to the outside. The normal water level WL1 is appropriately set between the bottom of the housing 211 and the partition 212 so that the communication portion 217 is not blocked.

The replenishment water tank 222 is a tank for supplying water to the storage part 225 of the housing 211 by opening the on-off valve 223 when the stored water W1 decreases. As the water in the replenishment water tank 222, tap water may be used, or circulating water may be used by connecting to a circulation channel or the like.

The first filtration chamber 213 and the second filtration chamber 214 are partitioned via a partition 212 perpendicular to the axial direction. A communication part 217 is formed at a lower portion of the partition 212 so that air flows from the first filtration chamber 213 to the second filtration chamber 214. Each of the first filtration chamber 213 and the second filtration chamber 214 is a cylindrical hollow portion. Filter media 215 and 215 are installed near the middle (in the middle) in the height direction of the first filtration chamber 213 and the second filtration chamber 214, respectively. As the filter medium 215, a known filter medium can be used. As the filter medium 215, for example, a tube-shaped, net-shaped, or clogged filter medium having a specific gravity lighter than water, a filter medium obtained by cutting a filter, or the like can be used.

散 A sprinkler 218 for sprinkling water inside is provided at the upper part of the housing 211. The water sprinkling section 218 includes a water sprinkling pipe 232, a water sprinkling valve 233, and a water sprinkling gutter 234. The water sprinkling pipe 232 is a pipe through which water flows. The water sprinkling pipe 232 is provided over the entire housing 211 in the axial direction. As the water to be sprinkled, fresh water may be supplied from the outside, or water in the intake reservoir 272 (see FIG. 19) may be circulated as described later. Alternatively, the water to be sprinkled may be circulated by providing a circulation pump tank (not shown) around the housing 211 or in the ground around the housing 211. For example, the circulation pump tank can receive the water discharged from the circulation water drain pipe 221, pump the water to the water sprinkling pipe 232 by a pump and piping, and circulate the water.

水 The watering valve 233 is a valve that adjusts the amount of water that drops the water flowing through the watering pipe 232. The watering valve 233 is provided for each of the first filtration chamber 213 and the second filtration chamber 214. The watering gutter 234 is provided immediately below the watering valve 233, and is a member that temporarily stores the water flowing from the watering valve 233. The sprinkler gutter 234 is attached to each of the first filtration chamber 213 and the second filtration chamber 214 via an angle material. The watering gutter 234 may be set in any direction, but is installed in parallel with the axial direction in the present embodiment. The water that overflows from the sprinkler gutter 234 falls.

(4) The partition wall 212 is provided with a filter medium cleaning air diffuser 219 for supplying air for cleaning the filter medium 215. As shown in FIGS. 19 and 20, the filter medium cleaning / spreading part 219 is a pipe through which air flows, and is composed of a horizontal part 242, a vertical part 243, and a forked part 244. The horizontal portion 242 is provided on the upper part of the housing 211 in parallel with the axial direction. The horizontal portion 242 is provided over the entire body 211 in the axial direction.

垂直 As shown in FIG. 21, the vertical portion 243 vertically hangs along the partition 212 to the lower end of the partition 212. The bifurcated part 244 is a bifurcated pipe whose exit side is bifurcated. As shown in FIG. 19, the bifurcated portion 244 is bifurcated at the lower end of the vertical portion 243 (partition wall 212), and each opening faces the first filtration chamber 213 and the second filtration chamber 214, respectively. That is, the air jetted from the forked portion 244 is configured to flow into the first filtration chamber 213 and the second filtration chamber 214. The filter medium washing / spreading unit 219 can adjust the flow rate of air by an adjustment valve 245.

The side wall 211c is a wall that covers the other end of the first odor filtration unit UT1, and has a substantially plate shape. The side wall 211c is a wall that separates the second filtration chamber 214 of the first odor filtration unit UT1 from the first filtration chamber 213 of the second odor filtration unit UT2. An upper opening 251 opening upward and a lower opening 252 opening lower are formed on the side wall 211c. The upper opening 251 is an exhaust unit of the first odor filtration unit UT1 (also serves as an air supply unit of the second odor filtration unit UT2). That is, the air that has passed through the second filtration chamber 214 of the first odor filtration unit UT1 flows into the first filtration chamber 213 of the second odor filtration unit UT2 via the upper opening 251.

The lower opening 252 is an opening between the side wall 211c and the bottom of the housing 211. The normal water level WL1 is set at a position where the lower opening 252 is submerged. That is, at the time of normal deodorization, the lower opening 252 is closed by the water stored in the storage part 225.

The second odor filtration unit UT2 includes a housing 211, a first filtration chamber 213, a second filtration chamber 214, filter media 215 and 215, a communication unit 217, a water sprinkling unit 218, and a filter media cleaning and air diffusion unit 219. It is mainly configured to include. Since the basic configuration of the second odor filtration unit UT2 is the same as that of the first odor filtration unit UT1, the same reference numerals are given and the description is omitted. In addition, in order to distinguish from the first odor filtration unit UT1, each part of the second odor filtration unit UT2 is also described as a first filtration chamber 213A, a second filtration chamber 214A, a filter medium 215A, and a communication part 217A.

上部 An upper opening 251 (air supply unit) for taking in air into the first filtration chamber 213 is provided on the side wall 211c of the second odor filtration unit UT2. An exhaust part 260 for discharging deodorized air is provided at an upper part of the second filtration chamber 214. The side wall 211d of the second odor filtration unit UT2 is a wall provided on the other end side in a direction perpendicular to the axial direction. The side wall 211d has a disk shape so as to cover the entire housing 211. Further, the side wall 211d is a wall that separates the second odor filtration unit UT2 and the fourth odor filtration unit UT4.

"Normal deodorization"
Next, the operation of the deodorizing device 201 according to the present embodiment will be described. The odor flowing from the air supply section 220 of the first odor filtration unit UT1 is removed from the first filtration chamber 213 → communication section 217 → second filtration chamber 214 → upper opening 251 → first filtration chamber 213A → communication section 217A → second filtration. The gas is exhausted from the chamber 214A through the exhaust part 260 (see also the white arrow in FIG. 19). At this time, the water overflowing from the sprinkler gutter 234 scatters and falls, collides with the filter media 215 and 215A, and scatters in the form of a mist. The odor is filtered each time it passes through the filter media 215 and 215A, and the odor is reduced.

水 The water that has fallen from the water sprinkling section 218 is stored in the storage section 225, and water that exceeds the normal water level WL1 is discharged from the circulating water drain pipe 221.

水 Water discharged from the circulating water drain pipe 221 flows into the water intake reservoir 272 or the like on the premises through the pipes 271 and 271 as shown in FIG. The water intake reservoir 272 is, for example, a reservoir, a reservoir, a water reservoir, an irrigation canal, or the like. The water intake 272 and the water sprinkling pipe 232 of the water sprinkling section 218 are connected by a pipe 274. The water in the intake reservoir 272 is pumped up by a pump tank 273 provided in a pipe 274, and is sprinkled from a sprinkling valve 233 through the pipe 274 and the sprinkling pipe 232. That is, the water in the water intake reservoir 272 can be circulated through the pump tank 273, the pipes 271, 274, and the like, and can be used as water sprinkled from the water sprinkling section 218.

"At the time of filter material washing"
After a predetermined period of time or when the filter medium is very dirty, the filter medium is washed. First, after closing the circulating water drain pipe 221, water flows in from the water sprinkling section 218 to store water up to the washing water level WL2 (see FIG. 1). The washing water level WL2 is set at a position where all or a part of the filter medium 215 is flooded. Thereafter, air is supplied to the filter media 215 and 215A through the filter media cleaning / spreading unit 219, and the filter media is washed with water and air pressure. When the washing of the filter medium is completed, the washing water is discharged from the washing drain pipe 224. Since the lower opening 252 that opens is formed in the lower part of the side wall 211c, the drainage on the second odor filtration unit UT2 side can also be drained from the lower opening 252.

(4) When all of the washing water flows, water is supplied from the replenishing water tank 222 to the storage unit 225, and the water is stored to the normal water level WL1.

The first and second deodorizing and filtering units UT1 and UT2, and the third and fourth odor filtering units UT3 and UT4 can be operated at the same time or individually. The configurations and operations of the third odor filtration unit UT3 and the fourth odor filtration unit UT4 are the same as those of the first deodorization and filtration unit UT1 and the second deodorization and filtration unit UT2, and therefore description thereof is omitted.

In the present embodiment, four odor filtration units are arranged in parallel, but any number of odor filtration units may be arranged as long as two or more units are used. Further, an air supply unit may be provided above the second filtration chamber 214A of the second odor filtration unit UT2, and an exhaust unit may be provided above the first filtration chamber 213 of the first odor filtration unit UT1. That is, the flow of air may be reversed from that of the above-described embodiment.

According to the deodorizing device 201 according to the present embodiment described above, the filter media 215 and 215A are provided in the first filtration chambers 213 and 213A and the second filtration chambers 214 and 214A arranged in the axial direction of the housing 211, respectively. By allowing the odor to pass through the filter media 215 and 215A through the communication portions 217 and 217A and the upper opening 251, respectively, the contact distance between the filter media 215 and 215A and the odor can be increased, and the odor reduction efficiency can be improved. it can.

ろ Furthermore, since the filter media 215 and 215A are arranged side by side in the axial direction of the housing 211, the filter media 215 and 215A can be installed horizontally, so that the height of the device can be reduced. Thereby, restrictions at the installation location, at the time of transportation, or at the time of construction can be reduced. In addition, by arranging a plurality of odor filtration units in the axial direction of the housing 211 in accordance with the degree of deodorization, the efficiency of deodorization reduction can be further improved and the degree of freedom in design can be increased.

Furthermore, the filter medium 215 can be easily washed by providing the filter medium washing and diffusion unit 219. In addition, by providing the forked portion 244 in the filter medium cleaning / spreading section 219, the filter medium 215 can be efficiently cleaned with a small number of parts.

"Seventh embodiment"
FIG. 23 is a configuration diagram of an odor reduction system for a livestock barn according to the seventh embodiment. As shown in FIG. 23, the odor reduction system 301 of the barn according to the seventh embodiment shows an example in which the deodorizing device 201 of the sixth embodiment is applied to an odor reduction system of a barn. Note that the livestock house 2, the aeration tank 21, the sealed pump tank 81, the sedimentation tank 31, and the like are almost the same as those in the above-described embodiment, and therefore, detailed description is omitted.

畜 In the odor reduction system of the livestock barn according to the seventh embodiment, the deodorizing device 201 of the sixth embodiment is provided between the water reservoir 4 (see FIG. 1) of the livestock barn 2 and the aeration tank 21. One end of the odor tube 83 is connected to the water storage unit 4 of the livestock barn 2, and the other end is connected to the air supply unit 220 of the deodorizing device 201. The air exhausted from the exhaust unit 260 is configured to flow into the aeration tank 21 (21A) via the exhaust pipe 107. Also, the blower 87 supplies air to each filter medium washing / spreading part 219 of the deodorizing device 201 via the air supply pipe 100 and supplies air for aeration to the first storage chamber 94A via the air supply pipe 101. Has become.

水 As described above, the water in the intake reservoir 272 can be circulated through the pump tank 273, the pipes 271, 274, and the like, and can be used as water sprinkled from the sprinkler 218.

According to the odor reduction system 301 of the livestock barn of the seventh embodiment, since water and air can be circulated in the system, running costs can be reduced and odor reduction efficiency can be increased. Further, according to the present embodiment, the odor discharged from the barn 2 is directly taken into the deodorizing device 201, so that the odor can be reduced at an initial stage. That is, since the odor can be reduced before the methane is gasified, the odor reduction efficiency can be further improved.

"Eighth embodiment"
"Ventilation system 151 for livestock barns"
Referring mainly to FIGS. 24 and 25, a ventilation system 151 for a livestock barn according to the present invention will be described. The ventilation system 151 includes a deodorizing device 70 </ b> B that communicates with the inside of the barn 2. The pens 2 are the fixed pens 2A and 2C, the non-fixed pens 2B, and the like, and are not particularly limited. The deodorizing device 70B is a more specific structure of the deodorizing device 70 of the first embodiment of the odor reducing system 1 and the structure of the deodorizing device 70A of the second and fifth embodiments of the odor reducing system 1. Therefore, the deodorizing device 70B is applicable to the first, second, and fifth embodiments of the odor reduction system 1. Further, the ventilation system 151 is applicable not only to pig raising but also to other facilities such as poultry raising facilities and pet breeder facilities.

"Deodorizing device 70B"
The deodorizing device 70B includes a sprinkling section 153 that sprinkles water that has flowed in from the air supply port 152, a filter medium 154 that is fixedly filled so as to filter the air sprinkled by the sprinkling section 153, and a filter medium 154. And a diffuser 155 for agitating the filter medium by injecting air into the filter medium immersed in water.

筺 The housing 156 of the deodorizing device 70B is formed of a FRP tubular body that is installed vertically. The outer diameter of the housing 156 is, for example, about 2 to 2.5 m, and the height is about 3 to 10 m. If the peripheral wall portion of the housing 156 is formed by a filament winding method, it is economically excellent. The bottom and ceiling of the housing 156 are closed by a disc-shaped member made of FRP. An air supply port mounting seat 157 for forming the air supply port 152 is attached to the outside of the peripheral wall portion near the ceiling of the housing 156. The air supply port mounting seat 157 is connected to, for example, a flexible duct or a pipe connected to a livestock barn. An exhaust port 158 that exhausts the air in the housing 156 is provided at a position facing the air supply port 152 across the center of the housing 156. An exhaust port mounting seat 159 for forming an exhaust port 158 is attached to the outside of the peripheral wall of the housing 156. An exhaust device such as a ventilation fan or an axial fan is attached to the exhaust port 158. The housing 156 may be made of a reinforced concrete structure (RC structure) or a metal material when a large-scale facility or a large capacity is used.

鉛 A vertical partition plate 162 is provided inside the housing 156 to partition the internal space into a supply space 160 on the supply port 152 side and an exhaust space 161 on the exhaust port 158 side. The air supply side space 160 and the exhaust side space 161 communicate with each other below the partition plate 162. The water sprinkling section 153, the filter medium 154, and the air diffusing section 155 are all arranged in the air supply side space 160.

ろ A filter medium placement plate 163 that extends in the lateral direction in the air supply side space 160 is attached to the lower part of the partition plate 162. The filter medium mounting plate 163 is formed of, for example, a mesh-shaped member having holes through which air and water can pass. The filter medium 154 is, for example, a porous ceramic body or the like, and its particle size, particle shape (spherical shape, ring type, etc.) is not particularly limited. The filter medium 154 is filled in the air supply side space 160 by being mounted on the filter medium mounting plate 163 in a non-fixed state in a bulk stack.

水 The water sprinkling section 153 is arranged near the ceiling of the housing 156. The water sprinkling section 153 is composed of, for example, a water spout. A watering nozzle may be used. The water spraying section 153 sprays water downward toward the air and the filter medium 154 that have flowed in from the air supply port 152. The nozzle shape, arrangement shape, number, and the like of the watering nozzles are not particularly limited. The water sprinkled by the water sprinkling section 153 can be used via a pipe 165 by pumping water collected at the bottom of the housing 156 by a pump 164. Further, as described with reference to FIG. 11, water in the circulation channel 41 may be used, or a separate fresh water source may be used.

The air diffuser 155 is provided below the filter medium mounting plate 163. The air diffuser 155 has, for example, a plurality of upwardly directed air diffusion nozzles. The nozzle shape, arrangement shape, number, and the like of the diffuser nozzles are not particularly limited. The air blown by the air diffuser 155 can use the blower 87 described with reference to FIG.

天井 A pair of inspection ports 166 and 167 communicating with the supply space 160 and the exhaust space 161 are provided on the ceiling of the housing 156, respectively. The inspection doors 166 and 167 are provided with opening and closing doors that allow people to enter and exit. On both sides of the partition plate 162, elevating ramps 168 used at the time of inspection are provided. The shape of the lifting ramp 168 is not particularly limited as long as it can be raised and lowered.

洗浄 A cleaning water pipe 169 is attached to the peripheral wall of the housing 156 on the exhaust-side space 161 side. The mounting position of the washing water pipe 169 is located above the upper part of the filter medium 154. As the water supplied by the washing water pipe 169, for example, water in a water tank 170 that stores water drawn from a river, a lake, a pond, or the like can be used. Further, a makeup water pipe 171 and a chemical pipe 172 are connected to the cleaning water pipe 169. Further, an overflow pipe 174 having an opening / closing valve 173 and a drain pipe 176 having an opening / closing valve 175 are attached to a peripheral wall portion of the housing 156.

"Action"
In a normal operation state of the deodorizing device 70B, odor components, dust, and the like contained in the air flowing into the air supply side space 160 from the air supply port 152 are first dissolved and collected in the water sprinkled from the water sprinkling section 153. Removed by Next, the filter medium 154 is deodorized by a microorganism adsorption reaction and microbial decomposition, and is then exhausted to the outside from the exhaust port 158 via the exhaust side space 161. The exhaust gas may be sent to the aeration tank side as described with reference to FIG. 13, or may be directly discharged to the atmosphere in some cases.

洗浄 When cleaning the deodorizing device 70B, the cleaning water is injected into the housing 156 from the cleaning water pipe 169. At this time, make-up water is added from the make-up water pipe 171 as needed, or a medicine is injected from the medicine pipe 172 as needed. The interior of the housing 156 can be disinfected by using liquid chlorine or the like as a chemical. By opening the open / close valve 173, the water surface becomes the height of the mounting position of the overflow pipe 174, as shown in FIG. This water surface position is a position where the entire filter medium 154 is immersed. By injecting air from the air diffuser 155 with the filter medium 154 immersed in this way, the filter medium 154 is stirred and washed in water. After the predetermined washing, the water is drained from the drain pipe 176.

As described above, the sprinkling section 153 that sprinkles the air flowing from the air supply port 152, the filter medium 154 that is non-fixedly filled so as to filter the air sprinkled by the sprinkling section 153, and the filter medium 154 below. According to the deodorizing device 70B provided with the air diffuser 155 that stirs the filter medium 154 by injecting air into the filter medium 154 in a state of being immersed in water, the ventilation system 151 of a livestock barn that is simple and excellent in deodorization efficiency is provided. Become. In the case of the fixed filter system, if dust or the like adheres to the surface, the deodorizing effect is reduced due to clogging, and it takes time to clean the filter. On the other hand, the deodorizing device 70B stirs and cleans the non-fixed filled filter medium 154 in the diffuser 155, so that there is no clogging or replacement of the filter medium, and maintenance is easy.

The deodorizing device 70B includes a vertical partition plate 162 that partitions the air supply side space 160 and the exhaust side space 161 so as to communicate below, and the water sprinkling section 153, the filter medium 154, and the air sprinkling section 155 supply air. With the configuration arranged in the side space 160, the deodorizing device 70B has a simple and compact structure.

The housing 156 of the deodorizing device 70B is a cylindrical body made of FRP which is installed vertically, and a pair of inspection ports 166 communicating with the supply side space 160 and the exhaust side space 161 are provided on the ceiling of the housing 156, respectively. , 167 are provided, and lifting ramps 168 are provided on both surfaces of the partition plate 162, so that the deodorizing device 70B has excellent maintainability.

As shown in FIG. 26A, the deodorizing device 70 </ b> B is arranged so that the odor exhausted from the fixed livestock house 2 </ b> C (or another livestock house) may be taken in from the air supply port 152. As shown in b), it is also possible to arrange so that the deodorized exhaust gas is supplied to the fixed livestock house 2C. In the case of FIG. 26A, for example, the air is exhausted from the odor releasing pipe 180 disposed below the floor of the fixed livestock house 2C and supplied to the deodorizing device 70B.

In the case of FIG. 26 (b), for example, an air supply fan 182 is provided in the middle of a connection duct 181 connecting the deodorizing device 70B and the fixed livestock house 2C, and the inside of the deodorizing device 70B is sucked and exhausted from the deodorizing device 70B, and fixed. Supply to the stall 2C. An air supply duct 183 extends from the upper part of the fixed livestock house 2C, and supplies air from the air supply duct 183.

26A and FIG. 26B may be combined to form a ventilation system in which the air flow is “deodorizing device 70B → fixed stable 2C → deodorizing device 70B”. According to such a ventilation system, the flow of air is blocked as much as possible on the supply side and the exhaust side, and in order to control infectious diseases of each animal species, the supply air can be cleaned, and contact infection such as pests and insects can be reduced as much as possible. .

In particular, if the exhaust gas from the deodorizing device 70B is supplied to the inside of the barn, the clean air filtered by the deodorizing device 70B can be supplied to the barn, so that the transmission of infectious diseases from wild birds and beasts can be reduced. Further, since the vaporizing heat generated by water spray has a cooling effect in the deodorizing device 70B, a cooling mist can be supplied into the livestock barn during a warm season such as summer. In winter, the air in the deodorizing device 70B has a higher temperature than the outside air, so if the exhaust gas from the deodorizing device 70B is supplied to the livestock barn, the cost of heating the livestock barn can be saved accordingly.

"Fixed stable 2D"
With reference to FIG. 27 and FIG. 28, the fixed livestock house 2D according to the present invention will be described. Most of the odors generated in the barn are heavier than air. Ammonia is lighter than air, but has high water solubility, and thus tends to dissolve in moisture and stay at a low position. The fixed livestock house 2D can efficiently exhaust the odor accumulated under the floor with a simple structure.

The fixed livestock barn 2D is installed on the upper part of the groove 184 recessed in the building frame, and a floor 185 on which the excrement of livestock can fall, and a substantially semicircle having an opening at the top in a side sectional view viewed from one direction. It has a shape, is provided inside the groove 184 with a gap C1 between the side surfaces 184A and 184B of the groove 184, and a water storage part 186 made of FRP for storing water for receiving the dropping manure, and upward from the water storage part 186. A gap covering member 187 that covers the gap C1 at a distant position and prevents manure from falling from the gap C1 into the groove 184, and is provided in a communication space 188 between the inside of the groove 184 below the gap C1 or the groove 184. An odor removing pipe 189.

The floor 185 is a snowboard or the like. The water storage portion 186 can be easily manufactured by, for example, halving a substantially cylindrical (elliptical) FRP housing formed by a filament winding method. The water reservoir 186 is stably installed in the groove 184 by the support pedestal 190. The groove 184 is, for example, recessed in a rectangular cross section on the floor of a pig house and is cured with concrete.

The gap covering member 187 is, for example, sandwiched between a floor 185 and a concrete floor of a pig house. A gap C2 is formed between the gap covering member 187 and the water storage section 186. The odor release pipe 189 is laid on the bottom of the groove 184. A plurality of suction holes 191 are formed on the peripheral surface of the odor release pipe 189. As shown in FIG. 29, the odor release pipe 189 may be installed in a communication space 188 that communicates with the groove 184, such as a space under the floor of a passage 192 through which a person passes. As the odor removing pipe 189, a PVC pipe or the like can be used.

According to the fixed kennel 2D, by generating a negative pressure in the odor releasing pipe 189, the odor in the fixed kennel 2D passes through the gaps C2 and C1 as shown by the solid white arrow, and the odor is released from the odor releasing pipe 189 to the outside. Can be exhausted. Since the odor releasing pipe 189 can be easily installed using the groove 184 or the communication space 188 below the floor, the facility cost can be reduced. Since the gap covering member 187 is provided, the cleanliness is maintained without excretion of manure into the groove 184.

In addition, in the fixed livestock house 2D, if the disinfecting method is to disinfect the inside of the groove 184 by spraying air containing the disinfecting solution from the odor releasing pipe 189, the disinfecting solution is passed through the gaps C1 and C2 at the time of maintenance or the like. The water reservoir 186 and floor 185 can be disinfected. Thereby, pests and the like can be eliminated, and cleanliness is maintained.

The preferred embodiment of the present invention has been described above. In the soil deodorizing treatment described in the fourth embodiment of the odor reducing system 1, the ground is lightly embanked, and a sheet such as a weeding sheet is covered. A crushed stone layer is provided and passed through a perforated pipe. Put a sheet on it and fill it up. Such an installation is simple and inexpensive. According to soil deodorization, the odor is adsorbed and dissolved in particles and moisture in the soil, and is decomposed and deodorized by microorganisms in the soil.

DESCRIPTION OF SYMBOLS 1 Odor reduction system of livestock barn 2 Livestock barn 3 Floor 4 Water storage part 5 Side plate part 6 Bottom plate part 21 Aeration tank 31 Precipitation tank 41 Recirculation channel 211 Housing 213 First filtration room 214 Second filtration room 215 Filter medium 217 Communication part 218 Sprinkling part 219 Filter media washing / spreading section 220 Supply section 244 Bifurcated section 260 Exhaust section

Claims (24)

1. (4) A livestock barracks comprising: a floor on which manure of livestock can fall; and a water storage section formed under the floor and storing water for reducing odor that receives the dropped manure.
2. The water storage section has a substantially semicircular shape having an opening at an upper portion in a side sectional view viewed from one direction, and is installed in a groove recessed in a building skeleton,
   At least in a state before being installed in the groove, the pair of side plates of the opening is formed in a substantially inverted C shape so that the interval increases as going upward. Item 7. The barn according to item 1.
3. Below the floor,
   The livestock barn according to claim 2, further comprising a gap covering member that covers a gap between the groove and the side plate portion.
4. The water storage section has a pair of vertical side plate sections facing each other and a bottom plate section formed in a V-shape, and has a top-opened shape in a side sectional view viewed from one direction. The livestock barn according to claim 1, wherein
5. The water storage unit is configured to be divided in the one direction,
   5. The livestock bar according to claim 4, wherein the divided portions are fastened so that the stepped edge portions bulged outward overlap with each other and are filled with a sealing material inside. 5.
6. The livestock barn according to claim 1, wherein a distance between the floor and the water surface in the water storage part is set to 50 cm or more.
7. A livestock barn having a floor on which manure of the livestock can fall, and a water reservoir formed under the floor and storing water for odor reduction to receive the dropped manure,
   An aeration tank for aerating the manure mixed water discharged from the water reservoir,
   A sedimentation tank that sediments and separates the aerated sludge that has been aerated in the aeration tank;
   An annular flow path for recirculating the supernatant water of the sedimentation tank to the water reservoir,
   An odor reduction system for livestock barns comprising:
8. Deodorization is interposed between the water storage section and the aeration tank, deodorizes the manure mixed water discharged from the water storage section by spraying water, exhausts the odor to the atmosphere, and flows the water sprayed water to the aeration tank. The odor reduction system of a barn according to claim 7, further comprising a device.
9. The odor reduction system according to claim 8, wherein the supernatant water of the sedimentation tank is supplied as water for watering the deodorizing device.
10. The odor reduction system according to claim 7, wherein the odor discharged from the pens is supplied to the aeration tank as air for aeration.
11. The odor reduction system according to claim 10, further comprising a deodorizing device that deodorizes the odor discharged from the animal house by spraying water and supplies the odor to the aeration tank as air for aeration.
12. The livestock barn has a cylindrical housing installed horizontally, a discharge pit swelled on a side surface of the housing and having an open / close lid for maintenance, and provided in the discharge pit, and overflows the manure mixed water. A non-fixed stable with an overflow pipe
    The odor pipe for discharging odor from the barn is connected to a side surface of the housing between the floor and the water surface at a position away from the discharge pit, The odor pipe according to claim 10 or 11, wherein: The odor reduction system for livestock barns as described.
13. The livestock barn has a cylindrical housing installed horizontally, a discharge pit swelled on a side surface of the housing and having an open / close lid for maintenance, and provided in the discharge pit, and overflows the manure mixed water. A non-fixed stable with an overflow pipe
    A discharge path for discharging the manure mixed water that has overflowed from the overflow pipe,
    A hermetically-sealed pump tank connected to the discharge path and into which odor inside is sucked;
    With
    The livestock stall according to claim 7, wherein a drain trap is formed around the discharge port of the discharge passage so as to be disposed inside the closed pump tank so that a part of the manure mixed water accumulates. Odor reduction system.
14. The odor reduction system according to claim 7, wherein the odor in the aeration tank is subjected to a soil deodorization treatment.
15. A deodorizing device configured to have a plurality of odor filtration units arranged side by side and reducing odor discharged from the barn,
    The odor filtration unit,
    A housing that is arranged horizontally and has a cylindrical shape,
    A first filtration chamber and a second filtration chamber that are provided in the housing and are separated by a partition wall perpendicular to the axial direction of the housing;
    A water sprinkler provided at an upper part of each of the first filtration chamber and the second filtration chamber;
    Filter media provided respectively in the first filtration chamber and the middle part of the second filtration chamber;
    A communication portion provided below the first filtration chamber and the second filtration chamber and communicating the first filtration chamber and the second filtration chamber;
    An air supply unit provided on one end side of the housing,
    An exhaust unit provided on the other end side of the housing,
    The odor flowing from the air supply unit is filtered by the water and the filter medium falling from the water sprinkling unit and exhausted from the exhaust unit, and the odor passing through the filter medium of the first filtration chamber is removed by the communication unit. A deodorizing device characterized in that the deodorizing device is passed through the filter medium in the second filtration chamber via a filter.
16. A filter medium cleaning air diffuser for supplying air to the filter medium for cleaning the filter medium,
    During normal deodorization, a normal water level is set between the bottom of the housing and the partition so that the communication portion is formed,
    16. The deodorizing apparatus according to claim 15, wherein at the time of washing the filter medium, a water level at the time of washing is set at a position where the filter medium is flooded, and the filter medium is washed with air supplied from the filter medium washing diffuser.
17. The said filter medium washing | cleaning aeration part is provided with the forked part open | released from the lower end side of the said partition toward each of the said filter medium of the said 1st filtration chamber and the said 2nd filtration chamber, The characterized by the above-mentioned. Deodorizing equipment.
18. A deodorizing device according to claim 15,
    A livestock barn having a floor on which manure of the livestock can fall, and a water reservoir formed under the floor and storing water for odor reduction to receive the dropped manure,
    An aeration tank for aerating the manure mixed water discharged from the water reservoir,
    A sedimentation tank that sediments and separates the aerated sludge that has been aerated in the aeration tank;
    A circulation channel for recirculating the supernatant water of the precipitation tank to the water storage portion,
    The deodorizing device is interposed between the water storage unit and the aeration tank, and deodorizes and exhausts the odor of the manure mixed water discharged from the water storage unit by spraying water supplied from the spraying unit. A odor reduction system for livestock barns.
19. 20. The odor reduction system according to claim 18, wherein the deodorizing device deodorizes the odor discharged from the pens by spraying water and supplies the odor to the aeration tank as air for aeration.
20. A ventilation system for a barn provided with a deodorizing device communicating with the inside of the barn,
    The deodorizing device,
    A sprinkler that sprinkles the air that flows in from the air inlet,
    A filter medium that is fixedly filled so as to filter the air that has been subjected to water spraying in the water spray unit,
    A ventilation unit provided below the filter medium and injecting air into the filter medium immersed in water to agitate the filter medium.
21. The deodorizing device,
    A vertical partition plate that partitions the space on the air supply side and the space on the exhaust port side so as to communicate below,
    21. The ventilation system according to claim 20, wherein the water sprinkling section, the filter medium, and the air diffusing section are arranged in a space on the air supply port side.
22. The housing of the deodorizing device is a tubular body that is installed vertically,
    On the ceiling of the housing, a pair of inspection ports are provided, each communicating with the space on the air supply side and the space on the exhaust port side,
    22. The ventilation system according to claim 21, wherein a lifting ramp is provided on both sides of the partition plate.
23. 21. The ventilation system for a barn according to claim 20, wherein the exhaust gas from the deodorizing device is supplied to the inside of the barn.
24. A floor that can be installed on the upper part of the ditch recessed in the building frame to allow livestock excrement to fall,
    It has a substantially semicircular shape having an opening at the top in a side sectional view viewed from one direction, and is disposed inside the groove with a gap between both sides of the groove, and stores water for receiving fallen manure. A water reservoir,
    A gap covering member that covers the gap at a position away from the water storage part upward and that prevents manure from falling from the gap into the groove;
    And an odor-eliminating pipe installed inside the groove below the gap or in a communication space with the groove.

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