Pig house deodorization system device and pig house deodorization system method

Abstract

The invention relates to a hog house deodorization system device and a hog house deodorization system method, in particular to the technical field of odor purification treatment in the breeding industry, and the hog house deodorization system device comprises a fresh air unit and a first odor collection unit which are arranged in a hog house activity area and a second odor collection unit arranged in a hog house manure area; a gas outlet of the first odor collecting 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; air outlets of the cyclone equipment and the adsorption-oxidation equipment are sequentially connected with dust removal equipment and exhaust equipment; and a liquid phase outlet of the cyclone equipment is connected with wastewater ozonization removal treatment equipment. According to the device provided by the invention, 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 present invention relates to the technical field of odor purification and treatment in the breeding industry, and in particular to a pig house deodorization system device and a pig house deodorization system method. Background Art

[0002] At present, the prevention and control measures for odor pollutants in pig farms can be mainly divided into the following types, namely biological method, chemical method, physical method and management method, etc., and the treatment work is carried out according to the time difference of the generation of odorous gases. Among the odorous pollutants produced by pig manure and urine, most of them 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 high temperature and hot environment can easily cause heat stress reactions in pigs, causing diseases and affecting the growth of pigs. Therefore, lowering the temperature inside the pig house is the key to controlling humidity. Mechanical ventilation is the main form of ventilation in closed pig houses. Fresh air is replaced by mechanical ventilation to replace the air in the closed pig house, so as to reduce the odorous environment in the pig house and replace the odor discharged outside. Using the purification effect of nature to eliminate odors has aggravated the deterioration of the surrounding living environment.

[0003] CN116371138A discloses a deodorizing device for a pig farm and a method of using the same. A plurality of pig pens are arranged in a pig house. Air 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. By setting up a gas purification box, the odor from the exhaust fan set 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] It can be seen that at present, the odor in the pig house is replaced by a fan and treated by a deodorization device to achieve odor emission standards. The ventilation method directly collects the odor emitted by various odor sources in the pig house, which will cause the odor components to be complex and the odor volume to be large, which will cause a huge load on the back-end deodorization treatment.

[0006] Although CN112973407A discloses a deodorization system and process for efficient absorption of waste gas and coordinated free radical oxidation, the odor in the pig house enters the deodorization equipment through the gas collection pipe network under the action of the fan induced wind. In the deodorization equipment, the odor first enters the pickling system and is washed and dusted by sulfuric acid mist. The odor after dust removal enters the free radical oxidation system and is oxidized by the atomized oxidant and oxidized by the free radicals. The oxidized odor enters the alkaline absorption system and is absorbed by the atomized absorbent to remove the inorganic oxides produced by oxidation, and then leaves the deodorization equipment and is finally discharged through the fan and exhaust pipe. However, in this scheme, the ventilation of the pig house is collected through the manure area, and a large amount of waste gas enters the manure area, which makes the odor source in the manure area emit more intense odor. Therefore, the subsequent deodorization treatment series process is more complicated and more difficult to handle.

[0007] Therefore, how to improve the foul odor inside and around the farm, the stench that cannot be dissipated in time, the damage to the human and animal bodies in the stench environment, the complicated stench treatment facilities, and the huge amount of stench waste gas treatment are the problems that the present invention needs to solve. Summary of the invention

[0008] In view of the problems existing in the prior art, the purpose of the present invention is to provide a pig house deodorization system device and a pig house deodorization system method to solve the current problems of complex odor treatment process and poor odor treatment effect in the pig house odor treatment process.

[0009] To achieve this object, the present invention adopts the following technical solutions:

[0010] In a first aspect, the present invention provides a pig house deodorization system device, the pig house deodorization system device comprising a fresh air unit and a first odor collection unit arranged in a pig activity area in the pig house, and a second odor collection unit arranged in a manure area in the pig house;

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

[0012] The gas outlet of the second odor collecting unit is connected to the adsorption-oxidation device;

[0013] The gas outlets of the cyclone device and the adsorption-oxidation device are connected to the dust removal device and the exhaust device in sequence;

[0014] The liquid phase outlet of the cyclone device is connected to a wastewater deodorization oxidation treatment device.

[0015] The device provided by the present invention can significantly reduce the dust and odor concentration in the pig house by collecting the odor from the pig activity area and the manure area respectively and treating them accordingly, thereby improving the pig house environment and the impact of the external odor on the environment. The operation process is low-noise and has little impact on the living environment of the pigs.

[0016] As a preferred technical solution of the present invention, the pig house includes 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.

[0017] Preferably, the fresh air unit includes a connected fresh air fan, a fresh air duct and a fresh air duct branch.

[0018] Preferably, 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.

[0019] Preferably, the humidified oxidation device includes a spray device and an ozone supply device.

[0020] As a preferred technical solution of the present invention, 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.

[0021] Preferably, the adsorption-oxidation device comprises an adsorption device and a catalytic oxidation device connected in sequence.

[0022] As a preferred technical solution of the present invention, the catalytic oxidation device includes a reversible electro-oxidation device;

[0023] Preferably, the reversible electro-oxidation device comprises at least one group of electrode plates arranged opposite to each other, and at least one thorn is arranged on the electrode plates in the electrode plate group.

[0024] Preferably, the spacing between adjacent electrode plate groups is 20-100 mm.

[0025] As a preferred technical solution of the present invention, the spacing between adjacent electrode plates is 20-100 mm.

[0026] Preferably, the height of the thorn is 5-10 mm.

[0027] Preferably, the spacing between adjacent thorns is 20-100 mm.

[0028] 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.

[0029] Preferably, the adsorbent collecting device is connected to the adsorbent supply port of the adsorption device.

[0030] In a second aspect, the present invention provides a pig house deodorization system method, the pig house deodorization system method comprising:

[0031] The odor collected from the pig activity area is subjected to a first deodorization treatment, and the odor collected from the manure area in the pig house is subjected to a second deodorization treatment.

[0032] As a preferred technical solution of the present invention, the first deodorization treatment includes humidification oxidation and cyclone separation performed sequentially.

[0033] As a preferred technical solution of the present invention, the humidification oxidation uses atomized liquid to humidify the odor.

[0034] Preferably, the liquid-gas ratio L / m in the humidified oxidation 3 is (0.1-1):1.

[0035] Preferably, the particle size D90 of the atomized droplets in the humidified oxidation is 10-100 μm.

[0036] Preferably, the pH value of the humidifying liquid used in the humidified oxidation is 6-8.

[0037] As a preferred technical solution of the present invention, the amount of the oxidizing medium used in the humidified oxidation is 0.1-10 mg / m 3 .

[0038] As a preferred technical solution of the present invention, the second deodorization treatment includes adsorption treatment and catalytic oxidation performed sequentially.

[0039] As a preferred technical solution of the present invention, in the adsorption treatment, a gas medium is used to spray the adsorbent into the odor.

[0040] Preferably, the amount of adsorbent used in the adsorption treatment is 0.01-0.5 g / m 3 .

[0041] As a preferred technical solution of the present invention, 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.

[0042] Preferably, 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).

[0043] Preferably, the particle size D90 of the adsorbent used in the adsorption treatment is 1-20 μm.

[0044] As a preferred technical solution of the present invention, the gas velocity of the odor passing through adjacent electrode plates during the catalytic oxidation is 1-3 m / s.

[0045] Preferably, the residence time of the odor between adjacent electrode plates during the catalytic oxidation is 0.5-3s.

[0046] As a preferred technical solution of the present invention, the electrode polarity change period of the power source in the catalytic oxidation is 0.1-3s.

[0047] Preferably, the discharge voltage of the electrode plate in the catalytic oxidation is 1-30 kV.

[0048] Preferably, the discharge current of the electrode plate in the catalytic oxidation is 10-50 mA / m 2 .

[0049] Compared with the prior art solutions, the present invention has the following beneficial effects:

[0050] (1) The present invention 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 odor characteristics. 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 suitable humidity and temperature, and the growth environment of the pigs is stable. The problem of unilateral air intake in traditional pig houses, which causes the accumulation of odor concentration as the air flows in the house, is avoided. 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 independently supplies air and collects exhaust gas. The gas in the pen flows horizontally to achieve an effect similar to that of an air curtain, covering the manure-leaking plate in the activity area to prevent odor from the manure area from escaping upward.

[0051] (2) The main sources of odor in the pig activity area are the debris of feed during the pigs' eating process, the dust from the hair generated by the pigs' activities, and the waste gas generated by their breathing. These debris, hair and other particulate matter adsorb odor-causing substances, so 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, odor-causing substances and other 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 to enter 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, and the clear liquid is recycled and atomized for utilization, and the gas generated by aeration enters the cyclone and is not discharged to affect the surrounding environment.

[0052] (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, mercaptan and other substances. In the treatment of odor in the manure area, the 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, so that the odor-causing substances, soluble ammonia, hydrogen sulfide, etc. are agglomerated. The odor then enters the catalytic oxidation device, where the oxidation device discharges and generates electrons. Under the action of water molecules and adsorbents with catalytic effects, 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), fat-soluble indoles, sulfides, carbonyls and alcohols in the odor are oxidized and decomposed into odorless inorganic substances, thereby improving the deodorization efficiency.

[0053] (4) The catalytic oxidation device is configured to be in a reversible discharge mode. When the odor 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 residence time of the adsorbent in the electric field. When the catalytic oxidation device is reversed, the anode adsorbed with the adsorbent is switched to the cathode, and the released electrons bombard the adsorbent with high intensity, decomposing the odor-causing substances and achieving the effect of deodorizing the odor. After frequent 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 circulation of the adsorbent.

[0054] (5) The odor from the pig house activity area passes through the cyclone and enters the adsorbent recycling process of the manure area deodorization device for centralized emission. The ozone escaping from the pig house activity area is degraded by active substances such as manganese and iron in the adsorbent. At the same time, the waste gas from the pig house 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 pig house at a lower level. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a schematic diagram of a fresh air unit, a first odor collecting unit, and a second odor collecting unit in a pig house deodorization system device in an embodiment of the present invention;

[0056] Figure 2 is a schematic diagram of an odor treatment device in an embodiment of the present invention;

[0057] Figure 3 is a schematic diagram of a fresh air unit and a second odor collecting unit in a pig pen in a pig house according to an embodiment of the present invention;

[0058] Figure 4 is a schematic diagram of a pig activity area and a manure area in a pig house according to an embodiment of the present invention;

[0059] Figure 5 is a schematic diagram of a new subunit in an embodiment of the present invention;

[0060] Figure 6 Schematic diagram of a reversible electro-oxidation device used in an adsorption-oxidation device in an embodiment of the present invention;

[0061] Figure 7 is a schematic diagram of the configuration of the electrode plates used in the adsorption-oxidation device in an embodiment of the present invention;

[0062] Figure 8 Schematic diagram of fixing the electrode plate used in the adsorption-oxidation device in the embodiment of the present invention.

[0063] 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 ground, 8-pig house roof, 9-manure area, 10-manure area air collecting pipe, 11-manure area induced draft fan, 12-humidification oxidation equipment, 13-cyclone equipment, 14-sedimentation chamber, 15-ozone generating equipment , 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 part, 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;

[0064] I- is fresh air, II- is the first odor, III- is the second odor;

[0065] A-cathode or anode, B-anode or cathode, A and B have opposite polarities.

[0066] The present invention is further described in detail below. However, the following examples are only 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

[0067] 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:

[0068] 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;

[0069] The gas outlet of the first odor collecting unit is connected to the humidification oxidation device 12 and the cyclone device 13 in sequence;

[0070] The gas outlet of the second odor collecting unit is connected to the adsorption-oxidation device 20;

[0071] The gas 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;

[0072] The liquid phase outlet of the cyclone device 13 is connected to a wastewater deodorization oxidation treatment device.

[0073] Exemplarily, the independence of the pig house 1 in the present invention includes arranging a manure area 9, a second odor collection unit, a pig activity ground and a fresh air unit in order from bottom to top based on the bottom of the pig house 1.

[0074] Among them, the fresh air unit is used to cooperate with the first odor collection unit to realize the collection and ventilation of odor in the pig activity area. Exemplarily, the fresh air unit includes a connected fresh air fan 2, a fresh air duct 3 and a fresh air duct branch 3.1 for realizing a reasonable configuration of fresh air. The fresh air fan 2 transports the fresh air to the fresh air duct branch 3.1 through the fresh air duct 3 to provide fresh air to the pig house; the first odor collection unit includes a pig activity area air collecting pipe 4, a pig activity area air collecting branch for collecting each pig pen 6, and a pig activity area induced draft fan 5 for transmitting the first odor, wherein the relevant pipelines of the first odor collection unit can be located at the top of the pig house, that is, the roof 8 of the pig house or the bottom of the pig house, and further, other equipment for realizing airflow transmission can also be designed to ensure the collection of odor in the pig activity area, such as Figure 3 , Figure 4 and Figure 5 shown.

[0075] In the present invention, fresh air I is fed into the pig pen 6 in the pig house 1 through the fresh air unit for air replacement, and then collected by the first odor collection unit to obtain the first odor II, which is then fed into the humidification oxidation equipment 12 for treatment through the induced draft fan 5 in the pig activity area.

[0076] In the present invention, illustratively, the second odor collection unit includes 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 equipment for realizing air flow transmission can also be designed to ensure the collection of odor in the manure area 9.

[0077] In the present invention, the second odor II collected by the second odor collecting unit is fed into the adsorption-oxidation device 20 through the manure area induced draft fan 11 for treatment.

[0078] In the present invention, the cyclone device 13 is also connected to a wastewater deodorization oxidation treatment device for treating the liquid obtained by humidification separation. The wastewater deodorization oxidation treatment device includes a sedimentation chamber 14, an ozone aeration pipe 17, a circulation pump 18 and a mud pump 16. The sedimentation chamber 14 is used for the sedimentation of the solid phase in the wastewater. During the process, the wastewater is deodorized through the ozone aeration pipe 17. The circulation pump 18 returns the settled water to the spray device 19 for secondary utilization. The mud pump 16 is used to transport the sludge obtained by the sedimentation.

[0079] In the present invention, the humidifying oxidation device 12 and the cyclone device 13 can be designed as independent devices without affecting each other, and can also be designed as an integral device, that is, the humidifying oxidation device 12 and the cyclone device 13 are integrated.

[0080] In the present invention, the second odor collection unit provided in the manure area 9 collects the odor in the manure area 9 so that the manure area 9 is in a state of slight negative pressure, further reducing and preventing the waste gas in the manure area 9 from being emitted to the pig activity area, realizing the independent collection of the odor in the manure area 9 and the odor in the pig activity area, 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. This makes the subsequent odor treatment process simpler and reduces the difficulty of treatment.

[0081] In the present invention, when the odor collecting air pipe is arranged under the active ground of the pig house 1 and above the manure pit, 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 air collecting pipe, and the fresh and clean air flows downward from the roof through the pig active ground and is directly discharged to the outside of the pig house 1 through the air collecting pipe. The air flows from top to bottom, reducing horizontal interference. The dust and odor caused by other activities such as pigs eating and excreting enter the air 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.

[0082] The humidification oxidation device 12 includes a spray device 19 and an ozone supply device.

[0083] 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.

[0084] The adsorption-oxidation device 20 includes an adsorption device and a catalytic oxidation device connected in sequence.

[0085] 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 performed after adsorption by the adsorbent.

[0086] Wherein, the catalytic oxidation device includes a reversible electro-oxidation device 21 .

[0087] 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 arranged on the electrode plate 21.1 of the electrode plate group. Figure 6 , Figure 7 and Figure 8 shown.

[0088] In the present invention, the thorns 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 thorns or raised thorns to ensure that discharge and oxidation can be achieved.

[0089] 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, but is not limited to the listed values, and other unlisted values ​​within the range also meet the requirements.

[0090] The spacing between adjacent electrode plate groups is based on the top of the thorn, that is, the spacing between adjacent thorn tops between adjacent electrode plate groups.

[0091] 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, but is not limited to the listed values, and other unlisted values ​​within the range also meet the requirements.

[0092] 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, but is not limited to the listed values. Other values ​​not listed in this range also meet the requirements.

[0093] Among them, the spacing between adjacent thorns 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, but is not limited to the listed values, and other values ​​not listed within this range also meet the requirements.

[0094] 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, that is, 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.

[0095] Wherein, the solid material outlet of the dust removal device 23 is connected to an adsorbent collection device 24 .

[0096] The adsorbent collecting device 24 is connected to the adsorbent supply port of the adsorption device.

[0097] In the present invention, an adsorbent supply device 25, an adsorbent cooling device 26, and an adsorbent dispersion and mixing device 27 are optionally provided between the adsorbent collection device 24 and the adsorbent inlet to ensure the secondary utilization effect of the recovered adsorbent.

[0098] Furthermore, the present invention provides a pig house 1 deodorization system method, and the pig house 1 deodorization system method comprises:

[0099] 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;

[0100] The first deodorization process includes humidification oxidation and cyclone separation performed in sequence.

[0101] Wherein, the humidification oxidation adopts the form of atomized liquid to humidify the odor.

[0102] Wherein, the liquid-gas ratio in the humidified oxidation is L / m 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, and other unlisted values ​​within the range also meet the requirements.

[0103] Among them, the particle size D90 of the atomized droplets in the humidified oxidation is 10-100μm, for example, it can be 10μm, 20μm, 30μm, 40μm, 50μm, 60μm, 70μm, 80μm, 90μm or 100μm, but is not limited to the listed values, and other unlisted values ​​within this range also meet the requirements.

[0104] 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, and other unlisted values ​​within the range also meet the requirements.

[0105] 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 / m 3 , 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 above values. Other values ​​not listed in the above values ​​also meet the requirements.

[0106] The second deodorization treatment includes adsorption treatment and catalytic oxidation performed in sequence.

[0107] Wherein, in the adsorption treatment, the adsorbent is sprayed into the odor using a gas medium.

[0108] 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.

[0109] 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 above values. Other values ​​not listed in the above values ​​also meet the requirements.

[0110] 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.

[0111] Wherein, 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).

[0112] Among them, the particle size D90 of the adsorbent used in the adsorption treatment is 1-20μm, for example, it can be 1μm, 2μm, 4μm, 6μm, 8μm, 10μm, 12μm, 14μm, 16μm, 18μm or 20μm, etc., but is not limited to the listed values, and other unlisted values ​​within this range also meet the requirements.

[0113] Among them, the gas velocity of 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, but is not limited to the listed values, and other values ​​not listed in this range also meet the requirements.

[0114] Among them, the residence time of odor between adjacent electrode plates 21.1 in 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, but is not limited to the listed values, and other unlisted values ​​within the range also meet the requirements.

[0115] Among them, the electrode polarity change period of the power source 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, and other unlisted values ​​within the range also meet the requirements.

[0116] 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, but is not limited to the listed values, and other unlisted values ​​within the range also meet the requirements.

[0117] The discharge current of the electrode plate 21.1 in the catalytic oxidation 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 above values. Other values ​​not listed in the above values ​​also meet the requirements.

[0118] Furthermore, in order to illustrate the deodorization effect that can be achieved by the pig house deodorization system device and method provided by the present invention, actual examples are used for illustration, as follows:

[0119] In the following examples, the odor concentration is measured according to GB / T 14675-1993 "Determination of air quality odor - Three-point comparison odor bag method".

[0120] Example 1

[0121] 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-mentioned embodiment are used to treat odor.

[0122] The fresh air supply volume per pig in each pen of the pig house 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 is 1.0L / m 3 The atomization particle size D90 of the humidified atomized liquid is 10 μm, and the amount of ozone used in the humidified atomization is 10 mg / m3 ; The pH value of the humidified atomized liquid is controlled at 7.

[0123] The air volume collected by the air collecting pipe in each pig manure area is 5m 3 / h. The amount of adsorbent sprayed into the odor in the manure area is 0.50g / m 3 ; The adsorbent is manganese dioxide, iron oxide and titanium dioxide, with a mass ratio of 1.0:0.2:0.2; the particle size D90 is 5μm; the adsorbent temperature is 10℃.

[0124] The gas velocity between the plates in the catalytic oxidation generating device 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 the longitudinally adjacent catalytic oxidation generating devices 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 .

[0125] The NH3 concentration in the odor emitted from the exhaust pipe is 0.12 mg / m 3 , H2S concentration is 0.01mg / m 3 , odor concentration is (dimensionless) 45, dust concentration is 0.2mg / m 3 .

[0126] Example 2

[0127] The pig farm in this example 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 2.7mg / m 3 , H2S concentration is 0.1mg / m 3 , odor concentration (dimensionless) is 235, dust concentration is 1.3 mg / m 3 , the waste gas deodorization system and process of the above-mentioned embodiment are used to treat odor.

[0128] The fresh air supply volume per pig in each pen of the pig house is 50m 3 / h, the air volume collected by the air collecting pipe in each pig activity area is 50m 3 / h. The atomization liquid-gas ratio in the pig activity area is 0.5L / m 3 The atomization particle size D90 of the humidified atomized liquid is 50 μm, and the amount of humidified atomized ozone is 2 mg / m 3 ; The pH value of the humidified atomized liquid is controlled at 6.

[0129] The air volume collected by the air collecting pipe in each pig manure area is 5m 3 / h. The amount of adsorbent sprayed into the odor in the manure area is 0.20g / m 3; The adsorbent is manganese dioxide and iron oxide, with a mass ratio of 1.0:0.2; the particle size D90 is 10μm; the adsorbent temperature is 20℃.

[0130] The gas velocity between the plates in the catalytic oxidation generating device is 2m / s, the residence time is 2s, the width of the plates is 100mm, the spacing between the plates is 100mm, the length of the thorns is 5mm, and the spacing between the thorns of the longitudinally adjacent catalytic oxidation generating devices is 20mm. The power supply reversal cycle is 3s, the discharge voltage is 20kV, and the discharge current per unit integrated area is 10mA / m 2 .

[0131] The NH3 concentration in the odor emitted from the exhaust pipe is 0.22 mg / m 3 , H2S concentration is 0.02mg / m 3 , odor concentration (dimensionless) is 62, dust concentration is 0.2mg / m 3 .

[0132] Example 3

[0133] 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 2.7mg / m 3 , H2S concentration is 0.2mg / m 3 , odor concentration (dimensionless) is 309, dust concentration is 1.3mg / m 3 , the waste gas deodorization system and process of the above-mentioned embodiment are used to treat odor.

[0134] The fresh air supply volume for each pig in each pen of the pig house is 10m 3 / h, the air volume collected by the air collecting pipe in each pig activity area is 10m 3 / h. The atomization liquid-gas ratio in the pig activity area is 0.1L / m 3 The atomized particle size D90 of the humidified oxidation liquid is 100 μm, and the amount of humidified oxidation ozone is 0.1 mg / m 3 ; The pH value of the humidified oxidation liquid is controlled at 8.

[0135] The air volume collected by the air collecting pipe in each pig pen is 0.5m 3 / h. The amount of adsorbent sprayed into the odor in the manure area is 0.01g / m 3 ; The adsorbent is manganese dioxide; the particle size D90 is 1 μm; the adsorbent temperature is 20°C.

[0136] The gas velocity between the plates in the catalytic oxidation generating device is 3.0m / s, the residence time is 1s, the width of the plates is 200mm, the spacing between the plates is 100mm, the length of the thorns is 5mm, and the spacing between the thorns of the longitudinally adjacent catalytic oxidation generating devices is 100mm. The power supply reversal cycle is 3s, the discharge voltage is 5kV, and the discharge current per unit integrated area is 10mA / m 2 .

[0137] The NH3 concentration in the odor emitted from the exhaust pipe is 0.7 mg / m 3 , H2S concentration is 0.03mg / m 3 , odor concentration (dimensionless) is 95, dust concentration is 0.2mg / m 3 .

[0138] Example 4

[0139] 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 3.7mg / m 3 , H2S concentration is 0.3mg / m 3 , odor concentration (dimensionless) is 355, dust concentration is 2.3mg / m 3 , the waste gas deodorization system and process of the above-mentioned embodiment are used to treat odor.

[0140] The fresh air supply volume per pig in each pen of the pig house 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 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.

[0141] The air volume collected by the air collecting pipe in each pig manure area 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, with a mass ratio of 1.0:0.1:0.1; the particle size D90 is 20μm; the adsorbent temperature is -20℃.

[0142] The gas velocity between the plates in the catalytic oxidation generating device 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 the longitudinally adjacent catalytic oxidation generating devices is 100mm. The power supply reversal cycle is 0.4s, the discharge voltage is 30kV, and the discharge current per unit integrated area is 50mA / m 2 .

[0143] 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 .

[0144] It is stated that the present invention illustrates the detailed structural features of the present invention through the above embodiments, 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 improvement of the present invention, equivalent replacement of the components selected by the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

[0145] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0146] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0147] In addition, 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 in the pig house, and a second odor collecting unit arranged in the manure area in 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 gas outlets of the cyclone device and the adsorption-oxidation device are connected to the dust removal device and the exhaust device in sequence; The liquid phase outlet of the cyclone device is connected to a wastewater deodorization oxidation treatment device.

2. The pig house deodorization system device 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; Preferably, the fresh air unit comprises a connected fresh air fan, a fresh air duct and a fresh air duct branch pipe; Preferably, the first odor collecting unit comprises 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; Preferably, the humidified oxidation device includes a spray device and an ozone supply device.

3. The pig house deodorization system device according to claim 1 or 2, 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; Preferably, the adsorption-oxidation device comprises an adsorption device and a catalytic oxidation device connected in sequence.

4. The pig house deodorization system device according to claim 3, characterized in that: The catalytic oxidation device comprises a reversible electro-oxidation device; Preferably, 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; Preferably, the spacing between adjacent electrode plate groups is 20-100 mm.

5. The pig house deodorization system device according to claim 4, characterized in that: The spacing between adjacent electrode plates is 20-100 mm; Preferably, the height of the thorn is 5-10 mm; Preferably, the spacing between adjacent thorns is 20-100 mm.

6. The pig house deodorization system device according to claim 3, characterized in that: The solid material outlet of the dust removal equipment is connected to an adsorbent collection device; Preferably, the adsorbent collecting device is connected to the adsorbent supply port of the adsorption device.

7. A pig house deodorization system method, characterized in that: The pig house deodorization system method comprises: The odor collected from the pig activity area is subjected to a first deodorization treatment, and the odor collected from the manure area in the pig house is subjected to a second deodorization treatment.

8. The pig house deodorization system method according to claim 7, characterized in that: The first deodorization process includes humidification oxidation and cyclone separation performed in sequence.

9. The pig house deodorization system method according to claim 8, characterized in that: In the humidification oxidation, the odor is humidified in the form of atomized liquid; Preferably, the liquid-gas ratio in the humidified oxidation is L / m 3 is (0.1-1):1; Preferably, the particle size D90 of the atomized droplets in the humidified oxidation is 10-100 μm; Preferably, the pH value of the humidifying liquid used in the humidified oxidation is 6-8.

10. The pig house deodorization system method according to claim 8 or 9, characterized in that: The amount of the oxidizing medium used in the humidified oxidation is 0.1-10 mg / m 3 .

11. The pig house deodorization system method according to claim 7, characterized in that: The second deodorization treatment includes adsorption treatment and catalytic oxidation performed in sequence.

12. The pig house deodorization system method according to claim 11, characterized in that: In the adsorption treatment, the adsorbent is sprayed into the odor using a gas medium; Preferably, the amount of adsorbent used in the adsorption treatment is 0.01-0.5 g / m 3 .

13. The pig house deodorization system method according to claim 12, characterized in that: 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; Preferably, 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); Preferably, the particle size D90 of the adsorbent used in the adsorption treatment is 1-20 μm.

14. The pig house deodorization system method according to claim 11, characterized in that: The gas velocity of the odor passing through the adjacent electrode plates during the catalytic oxidation is 1-3 m / s; Preferably, the residence time of the odor between adjacent electrode plates during the catalytic oxidation is 0.5-3s.

15. The pig house deodorization system method according to claim 11, characterized in that: The electrode polarity change period of the power source in the catalytic oxidation is 0.1-3s; Preferably, the discharge voltage of the electrode plate in the catalytic oxidation is 1-30 kV; Preferably, the discharge current of the electrode plate in the catalytic oxidation is 10-50 mA / m 2 .

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