Hog house deodorization system device

Abstract

The utility model relates to a pigsty deodorization system device, in particular to the technical field of odor purification treatment in the breeding industry, and the pigsty deodorization system device comprises a fresh air unit and a first odor collection unit which are arranged in a pig activity area in a pigsty, and a second odor collection unit arranged in an excrement area in the pigsty, a gas outlet of the first odor collection unit is sequentially connected with humidifying oxidation equipment and cyclone equipment; a gas outlet of the second odor collecting unit is connected with the adsorption-oxidation equipment; and air outlets of the cyclone equipment and the adsorption-oxidation equipment are sequentially connected with dust removal equipment and exhaust equipment. According to the device provided by the utility model, the stink of the pig activity area and the stink of the manure area are respectively collected and correspondingly treated, so that the dust and stink concentration of the pig house can be obviously reduced, the environment of the pig house and the influence of the discharged stink on the environment are improved, the operation process is low in noise, and the influence on the pig living environment is small.

Description

Technical Field

[0001] The utility model relates to the technical field of odor purification and treatment in the breeding industry, and in particular to a piggery deodorization system device. Background Art

[0002] Currently, prevention and control measures for odorous pollutants in pig farms can be mainly divided into the following categories: biological, chemical, physical, and management methods, which address the time differences in the generation of odorous gases. Most of the odorous pollutants produced by pig manure and urine are volatile pollutants. Therefore, as the temperature rises, the volatility of odorous pollutants in pig manure and urine increases, and the amount of odorous gases entering the air increases. The hot and humid environment can easily cause heat stress in pigs, leading to illness and affecting their growth. Therefore, lowering the temperature inside the pig house is key to controlling humidity. Mechanical ventilation is the main form of ventilation in closed pig houses. It replaces the air in the closed pig house with fresh air, thereby reducing the odorous environment in the pig house and replacing the odor discharged. Using nature's purification function to eliminate odors has exacerbated the deterioration of the surrounding living environment.

[0003] CN116371138A discloses a deodorizing device for a pig farm and a method for using the same. Several pig pens are arranged in a pig house, and suction pipes and transmission pipes are arranged in the walls around the pig pens. The odor generated in the pig house is transported to the deodorizing mechanism through an exhaust mechanism for absorption and treatment to obtain clean air.

[0004] CN109042347A discloses a ventilation and deodorization system and a deodorization device for a pig farm. Through the gas purification box, the odor from the exhaust fan installed above the pig house body can be extracted through the pig house body to the gas purification box for filtration and purification before being discharged, thereby facilitating deodorization of the pig house body.

[0005] Currently, odors from piggeries are replaced by fans and then treated with deodorization equipment to achieve emission standards. This ventilation method directly collects odors from various odor sources within the piggery, resulting in complex odor components and high odor volume, placing a significant burden on the back-end deodorization process.

[0006] Although CN112973407A discloses a waste gas efficient absorption and free radical oxidation deodorization system and process, under the action of the fan, the pig house odor enters the deodorization equipment through the gas collecting pipe network, in the deodorization equipment, the odor first enters the acid pickling system and is washed by sulfuric acid mist to remove dust, the deodorized odor enters the free radical oxidation system and is oxidized by the atomized oxidant once and is oxidized by the free radicals twice, the oxidized odor enters the alkali absorption system and is absorbed by the atomized absorbent to remove the inorganic oxides generated by oxidation, and finally is discharged through the fan and the exhaust pipe. However, in the scheme, the pig house ventilation is collected through the manure area, and a large amount of waste gas enters the manure area, so that the odor source of the manure area emits odor more strongly, and therefore the subsequent deodorization process is more complex and the treatment difficulty is greater.

[0007] Therefore, how to improve the stench inside and around the farm, the stench cannot be dispersed in time, the harm to human and livestock in the foul environment, the complicated foul odor treatment facility and the large amount of foul odor waste gas treatment is a problem to be solved by the utility model. Utility model content

[0008] In view of the problems in the prior art, the utility model aims to provide a pig house deodorization system device to solve the problems of complex odor treatment process, poor odor treatment effect and the like in the current pig house odor treatment process.

[0009] To achieve this purpose, the utility model adopts the following technical scheme:

[0010] The utility model provides a pig house deodorization system device, the pig house deodorization system device includes a fresh air unit and a first odor collecting unit arranged in the piglet activity area of the pig house and a second odor collecting unit arranged in the manure area of the pig house.

[0011] The gas outlet of the first odor collecting unit is connected with a humidification oxidation equipment and a cyclone equipment in sequence;

[0012] The gas outlet of the second odor collecting unit is connected with an adsorption-oxidation equipment;

[0013] The gas outlets of the cyclone equipment and the adsorption-oxidation equipment are connected with a dust removal equipment and an exhaust equipment in sequence.

[0014] The device provided by the utility model can significantly reduce the dust and odor concentration of the pig house, improve the pig house environment and the influence of the external exhaust odor on the environment, and has low noise during operation and little influence on the pig living environment.

[0015] As a preferred technical scheme of the utility model, the pig house comprises a manure area, a second odor collecting unit, a piglet activity ground and a fresh air unit arranged in sequence from bottom to top with the bottom of the pig house as the reference.

[0016] Preferably, the fresh air unit includes a connected fresh air fan, a fresh air duct and a fresh air duct branch.

[0017] As a preferred technical solution of the present invention, the first odor collection unit includes a pig activity area gas collecting pipe, a pig activity area gas collecting branch pipe for collecting gas from each pig pen, and a pig activity area induced draft fan for transmitting the first odor.

[0018] Preferably, the humidified oxidation device includes a spray device and an ozone supply device.

[0019] As a preferred technical solution of the present invention, the second odor collection unit includes a manure area gas collecting pipe arranged in the manure area, and a manure area induced draft fan for realizing odor transmission.

[0020] Preferably, the adsorption-oxidation device comprises an adsorption device and a catalytic oxidation device connected in sequence.

[0021] As a preferred technical solution of the present invention, the catalytic oxidation device includes a reversible electro-oxidation device.

[0022] As a preferred technical solution of the present invention, the reversible electro-oxidation device comprises at least one set of electrode plates arranged opposite to each other, and at least one thorn is provided on the electrode plates in the electrode plate set.

[0023] As a preferred technical solution of the present invention, the spacing between adjacent electrode plate groups is 20-100 mm.

[0024] As a preferred technical solution of the present invention, the spacing between adjacent electrode plates is 20-100 mm.

[0025] As a preferred technical solution of the present invention, the height of the thorns is 5-10 mm.

[0026] Preferably, the distance between adjacent thorns is 20-100 mm.

[0027] As a preferred technical solution of the present invention, the solid material outlet of the dust removal equipment is connected to an adsorbent collection device.

[0028] Preferably, the adsorbent collecting device is connected to the adsorbent supply port of the adsorption device.

[0029] Compared with the existing technical solutions, the present invention has the following beneficial effects:

[0030] (1) The utility model manages and controls the source of odor release in the pig house, collects odor from the pig activity area and the manure area respectively, and adopts different odor treatment processes according to the characteristics of the odor. A fresh air duct and an odor collecting duct for the activity area are set in each pig pen. The fresh air duct ensures that each pen has fresh air with appropriate humidity and temperature, and the pig growth environment is stable. It avoids the problem of odor concentration accumulation caused by the flow of air in the house due to the single-sided air intake of traditional pig houses. An odor collecting duct is set on the opposite side of the fresh air duct in each pen to collect odor from the pig activity area. Each activity area of ​​the pen has independent air supply and independent exhaust gas collection. The gas in the pen flows horizontally, achieving an effect similar to an air curtain, covering the manure slats in the activity area, and preventing odor from the manure area from escaping upward.

[0031] (2) The main sources of odor in the pig activity area are the debris of feed during the pigs' eating process, the dust generated by the pigs' activities, and the exhaust gas generated by their breathing. These debris, hair and other particulate matter adsorb odor-causing substances. Therefore, capturing these particulate matter can control and reduce the odor concentration in the activity area. In the odor humidification and oxidation dust removal process, the high-pressure atomized clear liquid reacts and combines with the particulate matter, hair, and odor-causing substances in the odor, so that the surface of the particulate matter and hair are wetted and wrapped by the droplets, and the specific gravity increases, which is more conducive to entering the subsequent cyclone and rotating and accelerating into the liquid film on the wall of the cylinder for removal. Substances such as ammonia and hydrogen sulfide in the odor dissolve in the clear liquid droplets and enter the liquid phase. The pH value of the absorbent is controlled to prevent the escape of ammonia and hydrogen sulfide; the liquid film on the cyclone falls along the wall to the collection tank for sedimentation and separation of sludge, and the supernatant is aerated with ozone to oxidize hydrogen sulfide and odor-causing substances, and the clear liquid dissolves a small amount of remaining ozone, which is then recycled and atomized for utilization, and the gas generated by aeration enters the cyclone and is not discharged to affect the surrounding environment.

[0032] (3) The odor-causing substances in the odor collected from the manure area are relatively volatile, such as indole, volatile fatty acids, propionic acid, ammonia, mercaptans and other substances. In the treatment of odor in the manure area, an adsorbent with a temperature lower than the odor temperature is sprayed and mixed with the odor. The adsorbent adsorbs the volatile substances in the odor and condenses the water vapor in the odor, causing the odor-causing substances, soluble ammonia, hydrogen sulfide and the like to agglomerate. The odor then enters the catalytic oxidation device, where discharge generates electrons. Under the action of water molecules and the adsorbent with catalytic effect, the generated free radicals directly act on the adsorbed odor-causing substances, forming a strong oxidizing atmosphere, further opening up the odor-causing substances and radicals, oxidizing the odor-causing substances, and oxidizing the odor-causing alcohols, phenols, volatile fatty acids (VFA) and fat-soluble indoles, sulfides, carbonyls and alcohols in the odor to be oxidized and decomposed into odorless inorganic substances, thereby improving the deodorization efficiency.

[0033] (4) The catalytic oxidation device is configured to be capable of reverse polarity discharge. When the odorous gas with evenly dispersed adsorbent enters the catalytic oxidation device, the adsorbent moves in a directional manner and is captured by the anode plate on the catalyst. The adsorbent is continuously bombarded by electrons on the anode plate, which increases the adsorbent's residence time in the electric field. When the catalytic oxidation device undergoes polarity reversal, the anode that has adsorbed the adsorbent switches to the cathode, and the released electrons bombard the adsorbent with high intensity, decomposing the odor-causing substances and achieving the effect of odor deodorization. After frequent polarity reversals, the adsorbent leaves the catalytic oxidation device in the direction of the odorous gas flow. It is then captured by the subsequent dust removal device to achieve the adsorbent cycle.

[0034] (5) Odors from the piggery activity area pass through the cyclone and enter the adsorbent recycling process of the manure area deodorization device for centralized emission. The active substances such as manganese and iron in the adsorbent degrade the ozone escaping from the piggery activity area. At the same time, the waste gas from the piggery activity area with lower odor concentration after purification dilutes the odor from the manure area with higher odor concentration after purification, ultimately maintaining the total odor concentration of the waste gas emitted from the piggery at a lower level. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the fresh air unit, the first odor collecting unit and the second odor collecting unit in the pig house deodorization system device in an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of an odor treatment device in an embodiment of the present utility model;

[0037] Figure 3 This is a schematic diagram of a fresh air unit and a second odor collection unit in a pig pen in a pig house according to an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the pig activity area and manure area in a pig house according to an embodiment of the present invention;

[0039] Figure 5 It is a schematic diagram of a new subunit in an embodiment of the present utility model;

[0040] Figure 6 This is a schematic diagram of a reversible electro-oxidation device used in an adsorption-oxidation device according to an embodiment of the present invention;

[0041] Figure 7 Schematic diagram of the configuration of the electrode plates used in the adsorption-oxidation device in the embodiment of the present utility model;

[0042] Figure 8 It is a schematic diagram of fixing the electrode plates used in the adsorption-oxidation device in the embodiment of the present utility model.

[0043] In the figure: 1-pig house, 2-fresh air fan, 3-fresh air duct, 3.1-fresh air duct branch, 4-pig activity area air collecting pipe, 4.1-pig activity area air collecting branch, 5-pig activity area induced draft fan, 6-pig stalls, 7-pig activity floor, 8-pig house roof, 9-manure area, 10-manure area air collecting pipe, 11-manure area induced draft fan, 12-humidification and oxidation equipment, 13-cyclone equipment, 14-sedimentation chamber, 15-ozone generator , 16-mud pump, 17-ozone aeration pipe, 18-circulation pump, 19-spraying equipment, 20-adsorption-oxidation equipment, 21-reversible electro-oxidation equipment, 21.1-electrode plate, 21.2-thorn, 21.3-fixing parts, 22-power supply, 23-dust removal equipment, 24-adsorbent collection equipment, 25-adsorbent supply equipment, 26-adsorbent cooling equipment, 27-adsorbent dispersion and mixing equipment, 28-exhaust equipment;

[0044] I- is fresh air, II- is the first odor, III- is the second odor;

[0045] A-cathode or anode, B-anode or cathode, A and B have opposite polarities.

[0046] The following is a further detailed description of the present invention. However, the following examples are merely simplified examples of the present invention and do not represent or limit the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims. DETAILED DESCRIPTION

[0047] In order to better illustrate the present invention and facilitate understanding of the technical solution of the present invention, typical but non-limiting embodiments of the present invention are as follows:

[0048] This embodiment provides a pig house deodorization system device, such as Figure 1 and Figure 2 As shown, the pig house deodorization system device includes a fresh air unit and a first odor collecting unit arranged in the pig activity area of ​​the pig house 1 and a second odor collecting unit arranged in the manure area 9 of the pig house 1;

[0049] The gas outlet of the first odor collecting unit is connected to the humidification oxidation device 12 and the cyclone device 13 in sequence;

[0050] The gas outlet of the second odor collecting unit is connected to the adsorption-oxidation device 20;

[0051] The air outlets of the cyclone device 13 and the adsorption-oxidation device 20 are connected to the dust removal device 23 and the exhaust device 28 in sequence.

[0052] Illustratively, the independence of the pig house 1 in the present invention includes setting up the manure area 9, the second odor collection unit, the pig activity ground and the fresh air unit in sequence from bottom to top based on the bottom of the pig house 1.

[0053] The fresh air unit is used in cooperation with the first odor collecting unit to realize the collection and ventilation of the odor in the pig activity area.

[0054] Exemplarily, the fresh air unit comprises a connected fresh air fan 2, a fresh air pipeline 3 and a fresh air pipeline branch pipe 3.1 for realizing reasonable allocation of fresh air, the fresh air fan 2 delivers fresh air to the fresh air pipeline branch pipe 3.1 through the fresh air pipeline 3 to provide fresh air for the pig house; the first odor collecting unit comprises a pig activity area gas collecting pipe 4, pig activity area gas collecting branch pipes of each pig stall 6 and a pig activity area induced draft fan 5 for transmitting the first odor, wherein the related pipelines of the first odor collecting unit can be located at the top of the pig house, i.e. the roof 8 of the pig house or the bottom of the pig house and the like, further, other devices for realizing airflow transmission can also be designed to ensure the collection of the odor in the pig activity area. Figure 3 、 Figure 4 and Figure 5 .

[0055] In the utility model, the fresh air I is delivered into the pig stall 6 in the pig house 1 through the fresh air unit to realize air replacement, then is collected through the first odor collecting unit to obtain the first odor II, and then is delivered into the humidification oxidation equipment 12 through the pig activity area induced draft fan 5 to be treated.

[0056] In the utility model, exemplarily, the second odor collecting unit comprises a manure area gas collecting pipe 10 arranged in the manure area 9 and a manure area induced draft fan 11 for realizing odor transmission, further, other devices for realizing airflow transmission can also be designed to ensure the collection of the odor in the manure area 9.

[0057] In the utility model, the second odor II collected by the second odor collecting unit is delivered into the adsorption-oxidation equipment 20 through the manure area induced draft fan 11 to be treated.

[0058] In the utility model, the cyclone equipment 13 is further connected with a wastewater deodorization oxidation treatment equipment for treating the liquid obtained through humidification separation, the wastewater deodorization oxidation treatment equipment comprises a sedimentation chamber 14, an ozone aeration pipe 17, a circulating pump 18, a mud pump 16 and the like.

[0059] In the utility model, the humidification oxidation equipment 12 and the cyclone equipment 13 can be designed as independent devices or as integral devices, i.e. the humidification oxidation equipment 12 and the cyclone equipment 13 are integrated.

[0060] In the present invention, the second odor collection unit provided in the manure area 9 collects odor from the manure area 9, placing the manure area 9 in a slightly negative pressure state, further reducing the amount of waste gas from the manure area 9 from being emitted into the pig activity area. This allows for independent collection of odor from the manure area 9 and the pig activity area, improving the environment of the pig house 1 and making it easier to maintain the overall stability of the pig house 1. This simplifies the subsequent odor treatment process and reduces the difficulty of treatment.

[0061] In the present invention, when the odor collecting air pipe is arranged under the movable floor of the pig house 1 and above the manure pit, and the air inlet of the pig house 1 is arranged on the roof, when the air is changed, the odor emitted from the manure pit flows upward through the gas collecting pipe, and the fresh and clean air flows down from the roof through the pig movable floor and is directly discharged to the outside of the pig house 1 through the gas collecting pipe. The air flow direction is from top to bottom, which reduces horizontal interference. The dust and odor caused by other activities of the pigs such as eating and excretion enter the gas collecting pipe network under the floor, reducing the impact on the surroundings, improving the environment of the pig house 1, and making it easier to maintain the stability of the overall environment of the pig house 1.

[0062] The humidification oxidation device 12 includes a spray device 19 and an ozone supply device.

[0063] In the present invention, the ozone supply device can be selected as an ozone direct supply device or an ozone generating device 15 to supply ozone.

[0064] The adsorption-oxidation device 20 includes an adsorption device and a catalytic oxidation device connected in sequence.

[0065] In the present invention, the adsorption device and the catalytic oxidation device can be designed as independent devices without affecting each other, or can be designed as an integral device, that is, an integrated design, to ensure that oxidation is carried out after adsorption by the adsorbent.

[0066] Wherein, the catalytic oxidation device includes a reversible electro-oxidation device 21 .

[0067] The reversible electro-oxidation device 21 comprises at least one set of electrode plates arranged opposite to each other, wherein at least one thorn 21.2 is provided on the electrode plate 21.1 of the electrode plate group. Figure 6 、 Figure 7 and Figure 8 shown.

[0068] In the present invention, the burrs 21.2 on the electrode plate 21.1 are used to achieve discharge and capture particles while providing electrons to oxidize odorous substances in the odor. They can be set on the surface and / or side of the electrode plate, and can be selected as needle-shaped burrs, or raised burrs and other structures to ensure that discharge and oxidation can be achieved.

[0069] Preferably, the spacing between adjacent electrode plate groups is 20-100 mm, for example, it can be 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, 55 mm, 60 mm, 65 mm, 70 mm, 75 mm, 80 mm, 85 mm, 90 mm, 95 mm or 100 mm, etc., but is not limited to the listed values. Other values ​​not listed within this range also meet the requirements.

[0070] The spacing between adjacent electrode plate groups is based on the top of the burr, that is, the spacing between adjacent burr tops between adjacent electrode plate groups.

[0071] Among them, the spacing between adjacent electrode plates 21.1 is 20-100mm, for example, it can be 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm or 100mm, etc., but is not limited to the listed values. Other values ​​not listed within this range also meet the requirements.

[0072] Among them, the height of the thorn 21.2 is 5-10mm, for example, it can be 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm or 10mm, etc., but is not limited to the listed values. Other values ​​not listed in this range also meet the requirements.

[0073] Among them, the spacing between adjacent burrs 21.2 is 20-100mm, for example, it can be 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm or 100mm, etc., but is not limited to the listed values. Other values ​​not listed within this range also meet the requirements.

[0074] In the present invention, the electrode plate 21.1 can be optionally fixed by a fixing member 21.3, and the fixing member 21.3 can be a bolt or the like to fix the electrode plate 21.1, or can be fixed by welding or the like; further, the electrode plate 21.1 is provided with a power supply 22, which is a reversible power supply 22, i.e., the polarity of the power supply 22 is reversed, thereby achieving the self-cleaning effect of the electrode plate 21.1 in the present invention.

[0075] The solid material outlet of the dust removal device 23 is connected to an adsorbent collection device 24 .

[0076] The adsorbent collecting device 24 is connected to the adsorbent supply port of the adsorption device.

[0077] In the present invention, an adsorbent supply device 25, an adsorbent cooling device 26, and an adsorbent dispersing and mixing device 27 are optionally provided between the adsorbent collecting device 24 and the adsorbent inlet to ensure the secondary utilization of the recovered adsorbent.

[0078] Furthermore, the present invention provides the aforementioned pig house deodorization system method, which comprises:

[0079] The odor collected from the pig activity area is subjected to a first deodorization treatment, and the odor collected from the manure area 9 in the pig house 1 is subjected to a second deodorization treatment;

[0080] The first deodorization process includes humidified oxidation and cyclone separation performed in sequence.

[0081] Wherein, the humidification oxidation adopts the form of atomized liquid to humidify the odor.

[0082] Wherein, the liquid-gas ratio L / m in the humidified oxidation is 3 The ratio is (0.1-1):1, for example, it can be 0.1:1, 0.2:1, 0.3:1, 0.4:1, 0.5:1, 0.6:1, 0.7:1, 0.8:1, 0.9:1 or 1:1, but is not limited to the listed values. Other values ​​not listed within the range also meet the requirements.

[0083] Among them, the particle size D90 of the atomized droplets in the humidified oxidation is 10-100 μm, for example, it can be 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm or 100 μm, but is not limited to the listed values. Other values ​​not listed within this range also meet the requirements.

[0084] Among them, the pH value of the humidifying liquid used in the humidified oxidation is 6-8, for example, it can be 6, 6.2, 6.4, 6.6, 6.8, 7, 7.2, 7.4, 7.6, 7.8 or 8, but is not limited to the listed values. Other values ​​not listed within this range also meet the requirements.

[0085] The amount of the oxidizing medium used in the humidified oxidation is 0.1-10 mg / m 3 , for example, it can be 0.1 mg / m 3 , 0.2mg / m 3 , 0.3mg / m 3 , 0.4mg / m 3 , 0.5mg / m 3 , 0.6mg / m 3 , 0.7mg / m 3 , 0.8mg / m3 , 0.9mg / m 3 , 1mg / m 3 , 2mg / m 3 , 3mg / m 3 , 4mg / m 3 , 5mg / m 3 , 6mg / m 3 , 7mg / m 3 , 8mg / m 3 , 9mg / m 3 or 10 mg / m 3 The above values ​​are not limited to the listed values, and other values ​​not listed in the range also meet the requirements.

[0086] The second deodorization treatment includes adsorption treatment and catalytic oxidation performed in sequence.

[0087] Wherein, in the adsorption treatment, a gas medium is used to spray the adsorbent into the odor.

[0088] In the present invention, the gas medium used in the adsorption treatment includes nitrogen, air, helium, neon and other commonly used carrier gases in the art.

[0089] The amount of adsorbent used in the adsorption treatment is 0.01-0.5 g / m 3 , for example, it can be 0.01g / m 3 , 0.02g / m 3 , 0.04g / m 3 , 0.06g / m 3 , 0.08g / m 3 , 0.1g / m 3 , 0.15g / m 3 , 0.2g / m 3 , 0.25g / m 3 , 0.3g / m 3 , 0.35g / m 3 , 0.4g / m 3 , 0.45g / m 3 or 0.5g / m 3 The above values ​​are not limited to the listed values, and other values ​​not listed in the range also meet the requirements.

[0090] The adsorbent used in the adsorption treatment includes one or a combination of at least two of manganese dioxide powder, iron oxide powder or titanium dioxide powder.

[0091] The adsorbent used in the adsorption treatment is manganese dioxide, iron oxide and titanium dioxide in a mass ratio of 1.0:(0-0.2):(0-0.2).

[0092] Among them, the particle size D90 of the adsorbent used in the adsorption treatment is 1-20 μm, for example, it can be 1 μm, 2 μm, 4 μm, 6 μm, 8 μm, 10 μm, 12 μm, 14 μm, 16 μm, 18 μm or 20 μm, etc., but is not limited to the listed values. Other values ​​not listed within this range also meet the requirements.

[0093] Among them, the gas velocity of the odor in the catalytic oxidation passing through adjacent electrode plates 21.1 is 1-3m / s, for example, it can be 1m / s, 1.2m / s, 1.4m / s, 1.6m / s, 1.8m / s, 2m / s, 2.2m / s, 2.4m / s, 2.6m / s, 2.8m / s or 3m / s, etc., but is not limited to the listed values. Other values ​​not listed in this range also meet the requirements.

[0094] Among them, the residence time of the odor between adjacent electrode plates 21.1 during the catalytic oxidation is 0.5-3s, for example, it can be 0.5s, 0.6s, 0.8s, 1s, 1.2s, 1.4s, 1.6s, 1.8s, 2s, 2.2s, 2.4s, 2.6s, 2.8s or 3s, etc., but is not limited to the listed values. Other values ​​not listed within this range also meet the requirements.

[0095] Among them, the electrode polarity change period of the power supply 22 in the catalytic oxidation is 0.1-3s, for example, it can be 0.1s, 0.2s, 0.4s, 0.6s, 0.8s, 1s, 1.2s, 1.4s, 1.6s, 1.8s, 2s, 2.2s, 2.4s, 2.6s, 2.8s or 3s, but is not limited to the listed values. Other values ​​not listed in this range also meet the requirements.

[0096] Among them, the discharge voltage of the electrode plate 21.1 in the catalytic oxidation is 1-30kV, for example, it can be 1kV, 2kV, 4kV, 6kV, 8kV, 10kV, 12kV, 14kV, 16kV, 18kV, 20kV, 22kV, 24kV, 26kV, 28kV or 30kV, etc., but is not limited to the listed values. Other values ​​not listed in this range also meet the requirements.

[0097] The discharge current of the electrode plate 21.1 in the catalytic oxidation process is 10-50 mA / m 2 , for example, it can be 10mA / m 2 , 15mA / m 2 , 20mA / m 2 , 25mA / m 2 、30mA / m 2 、35mA / m 2 , 40mA / m 2, 45mA / m 2 or 50mA / m 2 The above values ​​are not limited to the listed values, and other values ​​not listed in the range also meet the requirements.

[0098] Furthermore, in order to illustrate the deodorization effect that can be achieved by the pig house deodorization system and method provided by the present invention, actual examples are used for illustration, as follows:

[0099] In the following examples, odor concentrations were measured according to GB / T 14675-1993 “Air quality — Determination of odor — Three-point comparison odor bag method”.

[0100] Example 1

[0101] The pig farm targeted by this embodiment is a fully sealed sow room with a stock of 1,000 sows and a pig house area of ​​3,000 m 2 Mechanical ventilation is used, and the NH3 concentration in the odor emitted outside the house is 3mg / m 3 , H2S concentration is 0.2mg / m 3 , odor concentration (dimensionless) is 340, dust concentration is 2.3mg / m 3 , the waste gas deodorization system and process of the above embodiment are used to treat odor.

[0102] The fresh air supply volume per pig in each pen is 100m 3 / h, the air volume collected by the air collecting pipe in each pig activity area is 100m 3 / h. The atomization liquid-gas ratio in the pig activity area for odor collection, humidification, oxidation and dust removal is 1.0L / m 3 The atomized liquid of humidification has a particle size D90 of 10 μm and the amount of ozone used in the humidification atomization is 10 mg / m 3 ; The pH value of the humidified atomized liquid is controlled at 7.

[0103] The air volume collected by the air collecting pipe in the manure area of ​​each pig pen is 5m 3 / h. The amount of adsorbent sprayed into the odor in the manure area is 0.50g / m 3 The adsorbents were manganese dioxide, iron oxide, and titanium dioxide in a mass ratio of 1.0:0.2:0.2; the particle size D90 was 5 μm; and the adsorbent temperature was 10°C.

[0104] The gas velocity between the plates in the catalytic oxidation generator body is 1.0m / s, the residence time is 1s, the width of the plates is 50mm, the spacing between the plates is 20mm, the length of the thorns is 5mm, and the spacing between the thorns of adjacent catalytic oxidation generators is 20mm. The power supply reversal cycle is 1s, the discharge voltage is 10kV, and the discharge current per unit integrated area is 20mA / m 2 .

[0105] NH3 concentration in the exhaust cylinder emitted odor is 0.12 mg / m 3 , H2S concentration is 0.01 mg / m 3 , odor concentration is (dimensionless) 45, and dust concentration is 0.2 mg / m 3 .

[0106] Example 2

[0107] The pig farm targeted by this example is a 1000-head full-sealing sow room, with a pig house area of 3000 m 2 Mechanical ventilation is adopted, and the NH3 concentration in the odor emitted outside the house is 2.7 mg / m 3 , H2S concentration is 0.1 mg / m 3 , odor concentration (dimensionless) is 235, and dust concentration is 1.3 mg / m 3 The above-mentioned exhaust gas deodorization system and process are used to treat the odor.

[0108] The fresh air supply volume per pig per stall in the pig house is 50 m 3 / h, and the air collection volume of the pig activity area gas collection pipe is 50 m 3 / h per pig. The atomization liquid-gas ratio in the pig activity area odor collection humidification and oxidation dust removal is 0.5 L / m 3 ; the atomization particle size D90 of the humidified atomized clear liquid is 50 μm, the humidified atomized ozone dosage is 2 mg / m 3 ; and the pH value of the humidified atomized clear liquid is controlled to 6.

[0109] The manure area gas collection pipe collects air at a volume of 5 m 3 / h per pig per stall. The dosage of the adsorbent injected in the manure area odor is 0.20 g / m 3 ; the adsorbent is manganese dioxide and iron oxide with a mass ratio of 1.0:0.2; the particle size D90 is 10 μm; and the adsorbent temperature is 20℃.

[0110] The gas velocity between the electrode plates in the catalytic oxidation generation device body is 2 m / s, the residence time is 2 s, the width of the electrode plate is 100 mm, the spacing of the electrode plate is 100 mm, the length of the thorn is 5 mm, and the spacing of the adjacent catalytic oxidation generation device thorns in the longitudinal direction is 20 mm. The power reversal cycle is 3 s, the discharge voltage is 20 kV, and the discharge current per unit integrated area is 10 mA / m 2 .

[0111] The NH3 concentration in the exhaust cylinder emitted odor is 0.22 mg / m 3 , H2S concentration is 0.02 mg / m 3 , odor concentration (dimensionless) is 62, and dust concentration is 0.2 mg / m 3 .

[0112] Example 3

[0113] The pig farm targeted by this example is a certain 1000-head full-sealing sow room, with a pig house area of 3000m 2 Mechanical ventilation is adopted, and the NH3 concentration in the odor emitted outside the house is 2.7mg / m 3 , the H2S concentration is 0.2mg / m 3 , the odor concentration (dimensionless) is 309, and the dust concentration is 1.3mg / m 3 . The odor is treated by using the above-mentioned waste gas deodorization system and process.

[0114] The fresh air supply volume per pig per stall in the pig house is 10m 3 / h, and the air collection volume of the gas collection pipe in the active area of each pig is 10m 3 / h. The atomization liquid-gas ratio in the humidification oxidation dust removal of the odor collected in the active area of the pig is 0.1L / m 3 ; the atomization particle size D90 of the humidification oxidation clear liquid is 100μm, the ozone dosage for humidification oxidation is 0.1mg / m 3 ; and the pH value of the humidification oxidation clear liquid is controlled at 8.

[0115] The air collection volume of the gas collection pipe in the manure area per pig per stall is 0.5m 3 / h. The dosage of the adsorbent sprayed in the odor in the manure area is 0.01g / m 3 ; the adsorbent is manganese dioxide; the particle size D90 is 1μm; and the adsorbent temperature is 20℃.

[0116] The gas velocity between the electrode plates in the catalytic oxidation generating device body is 3.0m / s, the residence time is 1s, the width of the electrode plate is 200mm, the spacing of the electrode plate is 100mm, the length of the thorn is 5mm, and the spacing of the adjacent catalytic oxidation generating device thorns in the longitudinal direction is 100mm. The power reversal cycle is 3s, the discharge voltage is 5kV, and the discharge current per unit integrated area is 10mA / m 2 .

[0117] The NH3 concentration in the odor emitted by the exhaust cylinder is 0.7mg / m 3 , the H2S concentration is 0.03mg / m 3 , the odor concentration (dimensionless) is 95, and the dust concentration is 0.2mg / m 3 .

[0118] Example 4

[0119] The pig farm targeted by this example is a certain 1000-head full-sealing sow room, with a pig house area of 3000m 2 Mechanical ventilation is adopted, and the NH3 concentration in the odor emitted outside the house is 2.7mg / m 3, H2S concentration is 0.3mg / m 3 , the odor concentration (dimensionless) is 355, and the dust concentration is 2.3 mg / m 3 , the waste gas deodorization system and process of the above embodiment are used to treat odor.

[0120] The fresh air supply volume per pig in each pen is 80m 3 / h, the air volume collected by the air collecting pipe in each pig activity area is 80m 3 / h. The atomization liquid-gas ratio in the pig activity area for odor collection, humidification, oxidation and dust removal is 0.5L / m 3 The atomized particle size D90 of the clear liquid is 50 μm, and the ozone dosage is 5 mg / m 3 ; The pH value of the clear solution was controlled at 7.

[0121] The air volume collected by the air collecting pipe in the manure area of ​​each pig pen is 3m 3 / h. The amount of adsorbent sprayed into the odor in the manure area is 0.30g / m 3 The adsorbent is manganese dioxide, iron oxide and titanium dioxide in a mass ratio of 1.0:0.1:0.1; the particle size D90 is 20 μm; and the adsorbent temperature is -20°C.

[0122] The gas velocity between the plates in the catalytic oxidation generator is 3.0m / s, the residence time is 0.5s, the width of the plates is 50mm, the spacing between the plates is 100mm, the length of the thorns is 5mm, and the spacing between the thorns of adjacent catalytic oxidation generators is 100mm. The power reversal cycle is 0.4s, the discharge voltage is 30kV, and the discharge current per unit integrated area is 50mA / m 2 .

[0123] The NH3 concentration in the odor emitted from the exhaust pipe is 0.18 mg / m 3 , H2S concentration is 0.02mg / m 3 , odor concentration (dimensionless) is 51, dust concentration is 0.1mg / m 3 .

[0124] It is stated that the above embodiments illustrate the detailed structural features of the present invention, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must rely on the above detailed structural features to be implemented. Those skilled in the art should understand that any improvements to the present invention, equivalent replacements for selected components of the present invention, addition of auxiliary components, selection of specific methods, etc., fall within the scope of protection and disclosure of the present invention.

[0125] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0126] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0127] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A pig house deodorization system device, characterized in that: The pig house deodorization system device comprises a fresh air unit and a first odor collecting unit arranged in the pig activity area of ​​the pig house, and a second odor collecting unit arranged in the feces area of ​​the pig house; The gas outlet of the first odor collecting unit is connected to the humidification oxidation device and the cyclone device in sequence; The gas outlet of the second odor collecting unit is connected to the adsorption-oxidation device; The air outlets of the cyclone device and the adsorption-oxidation device are connected to the dust removal device and the exhaust device in sequence.

2. The pig house deodorization system according to claim 1, characterized in that: The pig house comprises a manure area, a second odor collection unit, a pig activity floor and a fresh air unit which are arranged in sequence from bottom to top based on the bottom of the pig house; The fresh air unit includes a connected fresh air fan, a fresh air duct and a fresh air duct branch.

3. The pig house deodorization system according to claim 1, characterized in that: The first odor collecting unit includes a pig activity area gas collecting pipe, a pig activity area gas collecting branch pipe for collecting gas from each pig pen, and a pig activity area induced draft fan for transmitting the first odor; The humidification oxidation device includes a spray device and an ozone supply device.

4. The pig house deodorization system according to claim 1, characterized in that: The second odor collecting unit includes a manure area gas collecting pipe arranged in the manure area, and a manure area induced draft fan for realizing odor transmission; The adsorption-oxidation device includes an adsorption device and a catalytic oxidation device connected in sequence.

5. The pig house deodorization system according to claim 4, characterized in that: The catalytic oxidation device includes a reversible electro-oxidation device.

6. The pig house deodorization system according to claim 5, characterized in that: The reversible electro-oxidation device comprises at least one set of electrode plates arranged opposite to each other, and at least one thorn is arranged on the electrode plates in the electrode plate set.

7. The pig house deodorization system according to claim 6, characterized in that: The distance between adjacent electrode plate groups is 20-100 mm.

8. The pig house deodorization system according to claim 6, characterized in that: The spacing between adjacent electrode plates in the electrode plate group is 20-100 mm.

9. The pig house deodorization system according to claim 6, characterized in that: The height of the thorn is 5-10mm; The distance between adjacent thorns is 20-100 mm.

10. The pig house deodorization system according to claim 4, characterized in that: The solid material outlet of the dust removal equipment is connected to an adsorbent collection device; The adsorbent collecting device is connected to the adsorbent supply port of the adsorption device.

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