EP3870340A1

EP3870340A1 - Method and device for treating stable outlet air

Info

Publication number: EP3870340A1
Application number: EP19798188.9A
Authority: EP
Inventors: Florian Weiss; Michael Abeln; Markus Von Der Assen
Original assignee: Lubing Maschinenfabrik Ludwig Bening GmbH and Co KG
Current assignee: Lubing Maschinenfabrik Ludwig Bening GmbH and Co KG
Priority date: 2018-10-23
Filing date: 2019-10-23
Publication date: 2021-09-01
Also published as: WO2020083991A1; CN112912159A; DE102018008363A1

Abstract

In the past, outlet air from stables has been treated with outlet air treatment devices individually adapted to the size of the particular stable and/or the maximum number of animals accommodated therein. This requires devices that are tailored individually to each stable and for which series production is not possible. According to the invention, the devices for treating stable outlet air are formed in a modular manner from a corresponding number of standardized first treatment modules (12) and second treatment modules (18). Thus, only a single type of first treatment modules (12) and second treatment modules (18) is required. By juxtaposing a corresponding number of first treatment modules (12) and second treatment modules (18), a device is produced in which the stable outlet air throughput per unit of time is adapted to the particular specifications.

Description

Method and device for treating house air

description

8. The invention relates to a method for treating stall air according to the preamble of claim 1 and 8. Furthermore, the invention relates to a device for treating stall air according to the preamble of claim 10.

In livestock housing, in particular pig and poultry farming, exhaust air from the livestock stalls, which is chemically contaminated, in particular with ammonia, odors and possibly dust. Increasingly stricter environmental regulations make it necessary to treat the house exhaust air before discharge into the open, in particular to free it from chemical components, odors and dust, if necessary, so that the legally prescribed limit values are not reached.

Various methods for treating house air are known. Devices used for this purpose are individually adapted to the size of the respective barn and / or the maximum number of animals in the respective barn. This requires devices that are individually tailored to the respective barn and do not allow series production. Such devices are therefore quite expensive.

The invention has for its object to provide a method for treating stall air and a corresponding device that allow inexpensive series production. A method for solving this problem has the measures of claim 1. Accordingly, the first treatment device by at least one first treatment module and the second Treatment device formed by at least one second treatment module. Depending on the volume flow of the house exhaust air, i.e. the amount of house exhaust air or the house exhaust air per unit time, the treatment of the house exhaust air is carried out by only a first treatment module or a corresponding number of first treatment modules and / or a second treatment module and / or a corresponding number of second treatment modules. Each treatment facility can thus be constructed or assembled in a modular manner from a number of standardized treatment modules that meet the requirements. Depending on the amount of air from the barn, the second treatment device is preferably also formed from a second treatment module or a plurality of second treatment modules. In particular, it is provided that the number of first and second treatment modules is the same.

The method according to the invention makes it possible to work with only a single first and second treatment module in small stables or small herds of animals. In the case of larger stables or stalls which become larger and / or larger herds of animals, the method works with a plurality of, preferably assembled, first treatment modules and / or second treatment modules.

The method according to the invention enables the treatment device to be individually adapted by using a corresponding number of first and / or second treatment modules. The first treatment modules and / or the second treatment modules are preferably of the same design. In particular, all of the first treatment modules and / or all of the second treatment modules, apart from minor deviations through adaptations, for example in the case of external treatment modules, are of identical design. This enables rational, cost-effective series production of the first treatment modules and / or the second treatment modules.

In an advantageous embodiment of the method, it is provided that the individual first treatment modules and / or second treatment modules are connected to form at least one or at least one row of successive first treatment modules and / or second treatment modules. The first treatment modules and / or the second treatment modules preferably have the same or approximately the same size housing. The at least one row of first and / or second treatment modules is then created by connecting the same-sized or the same housing to one another.

The row of first treatment modules preferably forms the first treatment device and / or the row of second treatment modules forms the second treatment device.

According to another advantageous embodiment of the method, the respective first treatment module is combined with a second treatment module to form a unit. The respectively assembled first and second treatment modules are thus connected to form a unit that can be handled as a whole.

The respective first treatment module and the second treatment module are preferably also connected to one another in such a way that air can flow from the first to the second treatment module. It is conceivable that the air from at least one air-permeable side of the respective first treatment module flows out of the same through a permeable, preferably long side of the adjacent, second treatment module. This enables an air exchange between the first and second treatment modules in the direction of the second treatment module.

It is conceivable that the respective treatment module is formed from two treatment module parts, in particular treatment module halves, which are assigned to opposite sides, in particular long sides, of the respective first treatment module. Then the respective first treatment module is located in the middle between the two parts of the second treatment module. This arrangement creates large flow cross sections for the air coming from the first treatment module into the second treatment module. The method preferably provides for at least one liquid, in particular a treatment liquid and / or water, to be applied to the house exhaust air in the respective first treatment module. The stable exhaust air is preferably sprayed or sprayed with liquid in the respective first treatment module. As a result, the exhaust air from the barn is washed in the respective first treatment module. Following the application of at least one liquid to the house exhaust air, the house exhaust air is additionally passed through at least one air-permeable mass transfer column in the respective first treatment module, preferably after the application of at least one liquid, and is treated in a second step in the respective first treatment module. The mass transfer column has a three-dimensional structure that is permeable to air and / or liquid. These are preferably trickling filters and / or packing. The at least one air-permeable mass transfer column is arranged on at least one side of the respective first treatment module. As a result, the respective mass transfer column still belongs to the first treatment module.

The respective air-permeable and / or liquid-permeable mass transfer column is preferably assigned to such a side, preferably the long side, of the respective first treatment module on which the second treatment module or a part thereof is provided. Then the stable exhaust air flowing out of the respective mass transfer column of the first treatment module and already treated in the first treatment module, which is also referred to below only as "air", reaches the adjoining second treatment module and / or second treatment module part via at least one air-permeable side of the first treatment module.

In the case of the second treatment module formed from two sub-modules and the parts of the second treatment module assigned to different sides of the first treatment module, the respective first treatment module has preferably the same and the same size of settlement body on both opposite outer sides, which are preferably outer longitudinal sides. Then, in the first treatment module, liquid from the barn, which is partially cleaned and moistened but moistened, flows out of the barn in two partial flows through the opposite sides of the first Treatment module provided mass transfer columns in the subsequent second treatment module parts of the second treatment module. After the air has flowed through the parts of the second treatment module, it is released into the open as chemically and biologically cleaned air.

A further method for solving the problem mentioned at the outset, which may also be a preferred development of the method described above, has the features of claim 8. In this method, it is provided that when the first treatment device is formed from a plurality of first treatment modules and the second treatment device is also formed from a plurality of second treatment modules, at least one first treatment module is temporarily deactivated and / or at least one first treatment module does not have at least one stall air exhaust, depending on the current volume of stall air is supplied, but air continues to be supplied to all second treatment modules from the still active or supplied with stable exhaust first treatment modules. It is thus possible not only to supply air from this first treatment module to every second treatment module that is assigned to the respective still active first treatment module, but also to such second treatment modules that are assigned to at least one, preferably all, temporarily deactivated first treatment modules . As a result, irrespective of the operating mode of the first treatment modules, all second treatment modules are constantly supplied with moist air from at least one first treatment module. The air loaded with liquid by the respectively active or operated first treatment module, namely pretreated stable exhaust air, then leads to the supply of all second treatment modules with humidified or moist air. This ensures that the biology of all the second treatment modules, which are preferably designed as biological treatment modules, remains unaffected if one or more first treatment modules are temporarily deactivated due to a lower incidence of stall exhaust air, in particular are not subjected to exhaust air from the stable.

An advantageous development of the method provides that the second treatment modules assigned to all the first treatment modules are also included to allow operation of not all first treatment modules with air to flow through from the still active first treatment modules. This can be done one after the other and / or simultaneously. The same amount of air preferably flows through every second treatment module. This prevents an undersupply of the biology of individual second treatment modules in the case of the first treatment modules, which are only partially operated and are supplied with stable exhaust air.

A device for solving the above-mentioned object has the features of claim 10. In this device, at least the first treatment device is formed, if necessary, from a plurality of at least identical first treatment modules.

The individual first treatment modules are preferably arranged in a row next to one another.

The individual first treatment modules are preferably connected to one another to form a coherent series of several treatment modules to form the treatment device.

The above-mentioned configurations or configuration options allow the device to be configured individually, namely in a modular manner to the required treatment output, in particular the required stall exhaust air throughput per unit of time. Due to their similarity, the individual treatment modules can be mass-produced cost-effectively. The similarity of the individual first treatment modules means that they are either identical or in principle identical in that they can have slight deviations, for example in the case of end-side first treatment modules, bores or openings in the side walls are not present. The basic structure, size and functionality of all treatment modules is always the same.

In a preferred embodiment of the device, it is provided that the second treatment device, if necessary, also consists of a plurality of identical, preferably to form the same, second treatment modules. Then all treatment facilities are standardized.

It is preferably provided to assign at least one second treatment module to each first treatment module and / or not only to connect the first treatment modules to one another, but also to connect the first treatment modules to the second treatment modules assigned to them. The device can thus be assembled in a modular manner as required.

According to an advantageous embodiment of the device, it is provided that the second treatment modules are connected to one another in an air-conducting manner. As a result, air, in particular humidified air, can flow through all second treatment modules of the device equally from at least one first treatment module.

It is preferably provided that the or each first treatment module is designed as a chemical treatment module that removes at least ammonia from the air in the barn, to the extent that it falls below a prescribed limit value. Alternatively or additionally, it can be provided that the respective first treatment device also separates dust from the stable exhaust air at least to such an extent that the permissible limit values are maintained. The respective first treatment module can also remove other chemical constituents from the stable exhaust air, if necessary.

An advantageous further development possibility of the device provides for the first treatment modules to be designed for the two-stage chemical treatment of the house air.

The second treatment device, in particular its at least one second treatment module, is preferably designed as at least one biological treatment module. The second treatment module is then a biological treatment module, which is used in particular to remove odors completely or at least to a necessary extent from the air in the barn. For this purpose, every second treatment module has Settlement body or carrier or vegetation body for a biology, in particular a biomass, which is used for the biological purification of the exhaust air. In particular, the biology or the colonization or the support body serve to ensure that the exhaust air from the barn is made completely or largely odorless.

Another advantageous further development possibility of the device provides that each first treatment module is connected at least in an air-conducting manner to the or each second treatment module. As a result, the stable exhaust air chemically pretreated in the respective first treatment module can get directly into the only or into all of the second treatment modules, because the treatment modules are virtually interrelated. Long flow paths and flow losses between the individual treatment modules, in particular the first and second treatment modules, are thereby avoided. A preferred embodiment of the invention is explained below with reference to the drawing. In this show:

1 is a schematic representation of a multi-stall with a device assigned to it,

2 is a perspective view of the device of FIG. 1,

3 is a side view of the device of FIG. 2,

4 is a plan view of the device of FIGS. 2 and 3,

5 is an end view of the (left) side of the device of FIGS. 2 to 4,

Fig. 6 is a perspective view of a first treatment module of the

1 to 5 with the front side not closed, and

Fig. 7 is a view of the unlocked face of the first

Treatment module of FIG. 6. Outside the cattle barn schematically shown in FIG. 1, a device for treating the exhaust air from the barn is arranged. The device is composed of a first treatment device and a second treatment device and a technology module 11.

In the exemplary embodiment shown, the first treatment device is used for the chemical treatment of the air in the barn. At least the first chemical treatment device removes ammonia from the house exhaust air at least to such an extent that the ammonia content is below a legally prescribed limit value. If necessary, the first chemical treatment device can also be used to completely or partially remove further first chemical constituents from the house exhaust air. At the same time, the chemical treatment device is preferably used to remove dust from the stable exhaust air to such an extent that the dust content is below the prescribed limit values.

In the exemplary embodiment shown, the second treatment device is designed as a biological treatment device which serves to additionally remove odors from the stable exhaust air chemically treated in the first treatment device at least to the extent that the legal requirements are met.

According to the invention, the device is modular or modular. This means that it can be individually formed or assembled from standardized modules depending on the maximum expected air from the stable. The stall exhaust air flow is the stall exhaust air flow, i.e. the volume of stall exhaust air generated per unit of time. The device is configured in such a way that it is able to treat the maximum stable exhaust air flow, namely to eliminate, filter out and / or neutralize the desired components of the stable exhaust air to such an extent that all legally prescribed limit values are reliably complied with.

As a result of the modularity, the device can be adapted to the respective requirements from standardized modules. The stall exhaust air flow can fluctuate seasonally. For example, the stable exhaust air flow is lower in cold seasons than in warm seasons. The maximum stall exhaust air flow is therefore predominantly at high temperatures.

The maximum stall exhaust air flow or the maximum amount of stall exhaust air per unit of time or the maximum volume of stall exhaust air per unit of time depends on the size of the cattle house 10, in particular the number and size of the farm animals kept therein.

In Fig. 1 the device is assigned to a single cattle stable 10. It is also conceivable to assign a device to a number of cattle houses 10. The design of the device is carried out in exactly the same way as described above in connection with a single cattle barn 10.

The modular or modular construction of the device according to the invention is achieved in that at least the first treatment device is formed from a corresponding number of first treatment modules 12. In the case of a small cattle barn 10 with a small number of animals, a single first treatment module 12 can be sufficient. As the size of the cattle house 10 increases, in particular the number and size of the farm animals kept therein, the first treatment device is formed from more than one first treatment module 12. In the exemplary embodiment shown, to which the invention is not restricted, however, three first treatment modules 12 are provided.

The first treatment modules 12 are arranged in a row next to one another and connected to one another in a coherent manner. The facing end walls 13 of adjacent first treatment modules 12 adjoin each other. The first treatment modules 12 are connected to one another, preferably screwed, by the end walls 13.

The first treatment modules 12 are of the same design. This means that the first treatment modules 12 of the respective device are ideally the same or even identical. However, it is also conceivable for the first treatment modules 12 to differ in some details from one another without their basic structure, their function and mode of operation and above all their dimensions change. For example, a housing 14 of the first treatment modules 12 can have slight adjustments or changes. These can consist in that the outer end walls 13 of the housings 14 of the first treatment modules 12 lying on the outside are completely closed and do not yet have any bores for screwing with further first treatment modules 12 of the respective row.

In the exemplary embodiment shown, a top wall 15 of the housing 14 of each first treatment module 12 has an inlet air opening 16 for the house air with a connection for a house air pipe 17. A separate stall exhaust pipe 17 is led from the cattle house 10 to each first treatment module 12. These stable exhaust air pipes 17 preferably have a cross section of the same size, because the first treatment modules 12 are of the same or at least the same design and therefore have the same treatment capacity of the stable exhaust air. The house exhaust pipes 17 can originate from different regions of the cattle house 10, but can also be brought together in the cattle house 10 to form a central house air intake point.

The house exhaust air is fed from the cattle house 10 to the first treatment modules 12 through the house exhaust pipes 17 by at least one air flow generator, in particular a fan. In the exemplary embodiment shown, this is located in the cattle shed 10. It is conceivable to assign at least one fan to each stall exhaust pipe 17 or to supply all the stall exhaust pipes 17 with stall exhaust air from a single fan. At least one fan can also be provided in the course of the respective house exhaust pipe 17. The exhaust air from the cattle house 10 is transported by a single or several fans to the device, namely to the respective first treatment module 12. In addition, from the at least one fan, the house exhaust air is not only guided to the respective first treatment module 12, but also through the latter and the adjacent second treatment device.

In the device shown in the figures, the second treatment device is also constructed modularly or in a modular manner by using has a single second treatment module 18 or, in the case of larger quantities of exhaust air from the stable, a plurality of second treatment modules 18.

The device preferably has the same number of first treatment modules 12 and second treatment modules 18. In the embodiment shown with three first treatment modules 12, three second treatment modules 18 are therefore also provided. However, it is also conceivable that the number of first treatment modules 12 deviates from the number of second treatment modules 18, since the number of second treatment modules 18 of the device can preferably be less than the number of first treatment modules 12 of the device.

In the exemplary embodiment described here, every second treatment module 18 consists of two preferably identical second treatment module parts 19. The second treatment module parts 19 of each treatment module 18 are arranged distributed on opposite sides 20, in particular long sides, of the respective first treatment module 12 (FIG. 2).

Not only are the first treatment modules 12 connected to one another, but also the second treatment modules 18 are connected to the first treatment module 12 to which they are assigned. In the second treatment module 18 divided here, each second treatment module part 19 is connected to the respective first treatment module 12 on opposite sides 20.

Without being absolutely necessary, the second treatment modules 18, in particular their second treatment module parts 19, can also be connected to one another at their mutually facing end faces 21. The mutually facing end faces 21 of the second treatment module parts 19 are open over their entire surface, in that they are formed only by an outer frame 22 and, if appropriate, adjacent frame modules 19 adjacent to neighboring frames 22 are connected to one another, preferably screwed together. Outer end faces 23 of outer second treatment module parts 19 are closed over their entire surface by a End wall, which can be provided with a door (Fig. 2). Such a door need only be provided in one of the closed end walls 13 of the second treatment module part 19 arranged in series in the exemplary embodiment shown.

The technology module 11 is assigned to the end wall 13 of an external first treatment module 12. The technology module 11 is preferably connected to the relevant end wall 13 of the first treatment module 12. In the exemplary embodiment shown, the technology module 11 has a cross section that corresponds to that of the end wall 13 of the first treatment module 12. In addition, the device described here provides that a housing 24 of the technology module 11 has the same dimensions as the housing 14 of the respective first treatment module 12.

Regardless of the number of first treatment modules 12 used to form the same, the device has only a single technology module 11. Because the size, in particular dimensions, of the technology module 11 matches a first treatment module 12, there is sufficient space in the technology module 11 for the technology of all of the first Treatment modules 12 and also second treatment modules 18 or their second treatment module parts 19. If the device is successively expanded or enlarged by adding one or more first treatment modules 12 and / or second treatment modules 18, in order to treat a larger amount of exhaust air per unit of time in the case of an enlarged cattle shed technology module 11 need not be enlarged. It is therefore not absolutely necessary to add additional technology modules 11. At most, further electrical or electronic components for controlling the added first treatment modules 12 and / or second treatment modules 18 are subsequently installed in the technology module 11.

6 and 7 show a first treatment module, specifically an end-side first treatment module 12 which not only has an end wall 13 on the outer end side 23, but also and on the opposite inner end side 23 an end wall not shown in the figures mentioned 13 and is thus completely closed. At this inside the end wall 13, the preferably identical end wall 13 of the subsequent adjacent first treatment module 12 is attached and the adjacent first treatment modules 12 are connected with their end walls 13 lying together.

In the central interior of the first treatment module 12, a plurality of horizontally and vertically extending pipe sections 25 are preferably provided, starting from the top wall 15 having the supply air opening 16. At least the vertical pipe sections 25 are each assigned a plurality of nozzles 26, in particular at regular intervals. As a result, there are a plurality of nozzles 26 distributed over this interior space in the interior of the first treatment module 12. The majority of the nozzles 26, which are preferably of identical design, form a liquid spray or spray cone, which means that the interior of the first treatment module 12 largely over the interior, in particular in the central space uniform liquid mist is generated.

The liquid can be pure water, but also water provided with chemical additives to support the treatment.

The house air to be treated passes through the respective house air pipe 17 and the supply air opening 16 into the interior of the housing 14 of the first treatment module 12. The house air to be treated comes into contact with the liquid mist generated in the interior of the first treatment module 12. Stable exhaust air washing takes place in which at least the ammonia is sufficiently washed out of the stable exhaust air. At the same time, dust is also removed from the house exhaust air by washing it. The above-described liquid washing of the house exhaust air represents a first chemical treatment stage in the respective first treatment module.

The liquid mist formed in the interior of the first treatment module 12 during washing of the stall air settles over time in a lower pan 27 of the housing 14 of the respective first treatment module 12. This is where the liquid used to treat the house air is collected. In the exemplary embodiment shown here (FIGS. 6 and 7), a circumferential collar of the liquid-tight tub 27 is provided on the inner end face 23 with a cutout 28 reaching to the bottom of the tub 27. As a result, the tubs 27 of adjacent first treatment modules 12 are connected in a liquid-conducting manner, so that a common, communicating liquid collection takes place in all tubs 27 of the adjacent first treatment modules 12. The used liquid collecting in the tubs 27 can be reused several times. The liquid is preferably processed or at least filtered before reuse. The liquid collecting in the tubs 27 is drained off and disposed of at regular intervals. This process can also be carried out continuously by continuously draining a small part of the liquid from the tubs 27 and replacing it with fresh liquid.

In the first treatment modules 12 shown here, the cutouts 28 between the troughs 27 are provided with a slide 29 or the like and can thereby be completely or partially closed. For example, the cutout 28 can be closed on the outer end faces 23 of outer first treatment modules 12. The cutout 28 can be opened again when another is added to the relevant outer first treatment module 12

Treatment module 12 is flanged to increase the treatment or cleaning capacity of the device. After the first treatment stage in the respective first treatment module 12, a second treatment stage follows. In the exemplary embodiment of the respective first treatment module 12 described here, these preferably also chemically treat the house exhaust air. For this purpose, opposite longitudinal sides 30 of the respective first treatment module 12 are preferably assigned the same mass transfer columns 31. Each

Mass transfer column 31 is formed from a plurality of elongated mass transfer bodies 32 stacked one above the other. The mass transfer bodies 32 are completely permeable to air and liquid, so that the chemically and mechanically cleaned stable exhaust air in the first stage enters the second chemical treatment stage forming mass transfer columns 31 undergo a final chemical treatment, in particular cleaning.

The preferably identical mass transfer bodies 32 are preferably made of plastic, cardboard or the like. They are formed from a large number of layered, profiled plates or foils. These plates or foils are perforated or mesh-like or grid-like. This creates large contact areas of the stable exhaust air to be chemically cleaned in the second treatment stage of the first treatment modules 12 and the liquid particles or droplets carried by them from the air wash of the first chemical cleaning stage in the center of the respective first treatment module 12.

The opposite longitudinal sides 30 of the housing 14 of each first treatment module 12 are (unlike shown in FIG. 6) either open over the entire surface or provided with a mesh or grid-like wall or a perforated wall. As a result, the opposite longitudinal sides 30 of each first treatment module 12 are preferably permeable to the entire surface of air and / or liquid for the outlet of the two-stage chemically treated stable exhaust air from the two opposite longitudinal sides 30 of the respective first treatment module 12 in the respective first treatment module 12.

The two second treatment module parts 19 of the respective second treatment module 18 assigned to a first treatment module 12 are assigned to the opposite open long sides 30 of the respective first treatment module 12 or distributed over the two long sides 30. The housings 24 of each second treatment module part 19 are only provided with closed top and bottom walls, but are otherwise preferably completely or partially air-permeable over the entire surface. Only outer, free end faces 23 of end-side second treatment module parts 29 are closed air-impermeably by a full-surface wall. The air-permeable inner end faces 21 and the opposite side faces 33 of the second treatment module parts 19 are preferably formed over the entire surface in a grid or mesh-like manner. The end faces 21 between Successive second treatment module parts 13 can be designed as a simple frame 22. The same also applies to the side surface 33 of the respective second treatment module part 19 adjoining the respective first treatment module 12. In particular, this is only frame-like if the long sides 30 of the respective first treatment module 12 are already provided with perforated or grid-like or net-like walls.

The entire interior of each second treatment module part 19 is filled with one or more contact bodies or contact body beds not shown in the figures. These are preferably made of plastic. However, it is also conceivable to form the contact body fill from chopped biological material, for example from wood chips. The biological lawn that settles on the outer surfaces of the contact bodies is used for the biological treatment of the house exhaust air chemically treated in the respective first treatment module 12 in the second treatment module 18. In particular, there is complete or at least sufficient biological removal of odors from the chemically treated house exhaust air in the respective second treatment module 18th

After the biological treatment in the second treatment module parts 19 of the second treatment modules 18, the stable exhaust air, which is at least largely biologically free of odors, is passed outside as safe air through the free outer side surfaces 33 of the second treatment modules 18, in particular their second treatment module parts 19.

The at least one fan for transporting the house air to be treated is not used to transport the house air out of the cattle barn 10 through the house exhaust pipes 17, but also to transport the house air to be treated through the first treatment modules 12 and the second treatment modules 18 and to inflate the treated Stall exhaust air from the device, namely from the second treatment modules 18, into the open. The method according to the invention is explained below in connection with the device described above:

The method according to the invention makes it possible to create a device which is adapted to the amount of exhaust air generated per unit of time. For this purpose, the device is configured in a modular manner from one or more first treatment modules 12 and second treatment modules 18. The decisive factor here is the maximum volume of stall exhaust air generated per time unit in the cattle barn concerned. As a result, the performance of the device required for the cattle barn 10 in question is determined, in particular calculated. The size, in particular the volume, of the cattle house 10 and / or the maximum number and size of the farm animals kept in the cattle house 10 are included in this calculation.

In the case of smaller cattle houses 10, in which fewer livestock are generally kept, it may be sufficient to form the device from only a single first treatment module 12 and a single second treatment module 18. When the cattle barn 10 and / or the livestock herd increases, the device has a larger number of first treatment modules 12 and second treatment modules 18, for example, according to the exemplary embodiment shown, three first treatment modules 12 and two second treatment modules 18. In the case of even larger livestock houses 10 and even larger livestock herds For example, the device can be composed of an even larger number of first treatment modules 12 and second treatment modules 18, so that the larger stable exhaust air flow can be adequately treated with the device.

As a result of the minor deviations required for adaptation purposes, all first treatment modules 12 and all second treatment modules 18 are of identical design. Thereby, the treatment modules 12 and 18 can be efficiently produced in series and also prefabricated. The prefabricated treatment modules 12 and 18 can then be put together individually as required. This compilation takes place depending on the size of the planned cattle house 10, the maximum number of animals to be kept therein and the type or size thereof arithmetically determined maximum stall exhaust air volume, in particular the maximum stall exhaust air flow.

In addition, the method provides for not using all of the first treatment modules 12 of the device during this reduced stall exhaust air flow, for example in winter, or if the cattle barn 10 is not fully occupied, if the maximum treatment output of the device is not required, during this reduced stall exhaust air discharge. Then, temporarily or temporarily, one or, if necessary, also a plurality of first treatment modules 12 are not involved in the stale exhaust air which then arises in a smaller amount, but only a part of the first treatment modules 12. However, only a part is provided for the active use of the first treatment modules 12 to continue to operate all the second treatment modules 18 and also all the second treatment module parts 19. This is done for the purpose of maintaining the biology, in particular the biological lawn, on the contact bodies and / or filling materials in the second treatment modules 18, in particular second treatment module parts 19. Then, even during the use of only a part of the first treatment modules 12, all of the second treatment modules become 18 with chemically pretreated, humidified stable exhaust air flows through the active first treatment modules 12 and is thereby moistened, thereby ensuring maintenance of the biology or the biological lawn in the second biological treatment modules 18.

In order to prevent air from the second treatment modules 18 from flowing back into the first treatment modules 12 that are not currently being operated during the active operation of only a few first treatment modules 12, it is conceivable to close the supply air opening 16 of the first treatment modules 12 that are not currently being operated during their downtimes. Alternatively, it can also be provided that the air-permeable long sides 30 of the temporarily inactive first treatment modules 12 are temporarily closed by blinds or the like.

If not all of the first treatment modules 12 of the device due to a temporary reduction in the volume of stall exhaust air generated per unit of time the treatment of the house exhaust air, it is advantageous if the delivery rate, in particular speed, of the at least one fan for transporting the house exhaust air to be treated through the device is reduced, so that the speed with which the house exhaust air the device, especially the respective first treatment module 12, is about the same as the flow velocity through each first treatment module 12 when all first treatment modules 12 are active, ie are involved in the treatment of the house air. Another alternative procedure provides that, with a small amount of stall exhaust air per unit of time, all first treatment modules 12 and also second treatment modules 18 continue to be operated, but the flow rate of the stall exhaust air through the treatment modules 12 and 18 is reduced by correspondingly corresponding to the reduced temporal stall exhaust air quantity Reduction of the delivery rate, especially the speed, of the at least one fan for transporting the exhaust air to be treated through the treatment modules 12 and 18.

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Reference list

10 cattle shed

11 technology module

12 first treatment module

13 end wall

14 housing

15 top wall

16 supply air opening

17 Barn exhaust pipe

18 second treatment module

19 second treatment module part

20 page

21 end face

22 frames

23 end face

24 housing

25 pipe section

26 nozzle

27 tub

28 cutout

29 slider

30 long side

31 mass transfer column

32 mass transfer bodies

33 side surface

Claims

1. A method for treating stall air, wherein at least one ammonia and preferably dust is removed from the stall air by at least one first treatment unit and the stall air is at least largely freed of odor by at least one second treatment device, characterized in that the first treatment device is provided with at least one first treatment module (12) and the second treatment device is formed by at least one second treatment module (18), the treatment of which is carried out by one or a corresponding number of first treatment modules (12) and / or second treatment modules (18) as a function of the volume flow of the house exhaust air .

2. The method according to claim 1, characterized in that the same or substantially the same first treatment modules (12) and / or second treatment modules (18) are used as the first treatment modules (12) and / or second treatment modules (18).

3. The method according to claim 1 or 2, characterized in that the individual first treatment modules (12) and / or second treatment modules (18) are connected at least to a series of successive first treatment modules (12) and / or second treatment modules (18).

4. The method according to any one of the preceding claims, characterized in that the respective first treatment module (12) is combined with a second treatment module (18) to form a unit, the respective second treatment module (18) preferably being arranged next to a first treatment module (12) becomes.

5. The method according to any one of the preceding claims, characterized in that from at least one side (20) of the respective first Treatment module (12) the air from the same is passed through one side of the adjacent second treatment module (18).

6. The method according to any one of the preceding claims, characterized in that in the respective first treatment module (12) the stable exhaust air is subjected to at least one liquid and then the stable exhaust air through at least one air-permeable mass transfer column (31) on at least one side of the at least one first treatment module ( 12) is conducted.

7. The method according to any one of the preceding claims, characterized in that in the case of a plurality of first treatment modules (12) and second treatment modules (18), a first treatment module (12) or optionally also a plurality of first treatment modules (at least from the first treatment module (12) with a temporarily lower stall exhaust air flow 12) is deactivated during the period of the lower stall exhaust air flow.

8. A method for treating stall air, wherein ammonia and preferably dust are removed from the stall air by at least one first treatment unit and the stall air is at least largely freed of odor by at least one second treatment unit, characterized in that the first treatment unit consists of a plurality of first treatment modules (12 ) and the second treatment unit is formed from a plurality of second treatment modules (18), with at least one first treatment module (12) being temporarily deactivated as a function of the current stall exhaust air flow, but all second treatment modules (18) still leaving the operated first treatment modules (12) Air flow.

9. The method according to claim 8, characterized in that the second treatment modules (18) assigned to all the first treatment modules (12), even when only a part of the first treatment modules (12) is operated by air from the operated or the first treatment modules (12). are flowed through, preferably successively and / or simultaneously.

10. Device for treating stall air with at least one first treatment device for removing at least ammonia and preferably dust from the stall air and a second treatment device which at least largely frees the barn air of its odor, characterized in that the first treatment device consists of a number of the same type as required first treatment modules (12) is formed.

11. The device according to claim 10, characterized in that the second treatment device is formed if necessary from a plurality of similar second treatment modules (18), wherein preferably at least one second treatment module (18) is assigned to each first treatment module (12) and / or is connected thereto.

12. The apparatus of claim 10 or 11, characterized in that the second treatment modules (18) are interconnected in an air-conducting manner.

13. Device according to one of claims 10 to 12, characterized in that each first treatment module (12) is at least air-conducting connected to a second treatment module (18).

14. Device according to one of claims 10 to 13, characterized in that the at least one first treatment module (12) is designed as a chemical treatment module (12) and / or the at least one second treatment module (18) is designed as a biological treatment module.

15. Device according to one of claims 10 to 14, characterized in that the or each first treatment module (12) has two treatment stages, in particular chemical treatment stages, which treat the house exhaust air in succession.

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