A livestock and poultry breeding odor inhibitor and preparation method thereof

Abstract

The invention discloses a livestock and poultry breeding odor inhibitor and a preparation method thereof, and specifically relates to the field of odor inhibitors. The livestock and poultry breeding odor inhibitor is composed of porous polymer particles, peppermint oil, tea polyphenols, nano titanium dioxide and nano iron oxide. The livestock and poultry breeding odor inhibitor prepared by the invention has a highly efficient deodorizing effect and a long-lasting deodorizing effect.

Description

Technical Field

[0001] The invention relates to the technical field of odor inhibitors, and in particular to an odor inhibitor for livestock and poultry breeding and a preparation method thereof. Background Art

[0002] In livestock farms, the main source of odorous gases is the decomposition of waste such as animal excrement and wasted feed. The odorous gases produced during the degradation of these wastes mainly include sulfides, nitrogen compounds, aliphatic compounds, carbon dioxide and methane. These odorous substances not only have a negative impact on the growth and development of livestock and poultry, but also pose a serious threat to the health of the surrounding people.

[0003] In the prior art, deodorants are mainly divided into two categories: chemical deodorants and biological agent deodorants. Chemical deodorants can completely decompose odor molecules into harmless substances such as water and ammonia by chemically reacting with odor molecules in the air. The advantage of this type of deodorant is its effectiveness, but its main disadvantage is that it cannot be reused, that is, it needs to be replaced with a new deodorant after use, resulting in high use costs and waste of resources.

[0004] Biological deodorants use beneficial bacteria such as Bacillus subtilis and Aspergillus, as well as biological enzymes such as protease, lipase, and cellulase, which can effectively digest and degrade feces and fermented excrement, thereby reducing the generation of odor. Although this method has a certain deodorizing effect, its production cost is high, and in actual application, the activity of biological agents is difficult to maintain for a long time, so there are certain limitations in large-scale application. Summary of the invention

[0005] In view of the shortcomings of the prior art, the object of the present invention is to provide a livestock and poultry breeding odor inhibitor and a preparation method thereof.

[0006] The above object of the present invention is achieved through the following technical solutions:

[0007] A livestock and poultry breeding odor inhibitor, comprising the following components in parts by weight:

[0008] 30-40 parts of porous polymer particles;

[0009] 5-10 parts of peppermint oil;

[0010] Tea polyphenols 5-10 parts;

[0011] The polymer is polysulfone.

[0012] By adopting the above technical scheme, the porous polymer particles are mainly based on polysulfone, which has high chemical stability, thermal stability and mechanical strength. In the odor inhibitor, the porous structure of the polysulfone material provides a large surface area and abundant pores, which can effectively adsorb malodorous gases such as ammonia and hydrogen sulfide generated in the livestock and poultry breeding process. This physical adsorption mechanism greatly improves the deodorization efficiency of the odor inhibitor. At the same time, its chemical corrosion resistance and heat resistance enable the inhibitor to work stably for a long time in the breeding environment, and will not fail or degrade due to the harsh conditions of the environment (such as high temperature, high humidity or acidity and alkalinity). Peppermint oil and tea polyphenols are both natural deodorizing and antibacterial ingredients with strong volatility and antibacterial properties. The active ingredients such as menthol and menthone in peppermint oil have a fresh smell, which can cover and neutralize the smell of malodorous gases. At the same time, peppermint oil also has a certain antibacterial effect, which can inhibit the growth of anaerobic bacteria and reduce the reproduction of harmful bacteria in livestock and poultry feces and urine, thereby reducing the generation of odor from the source.

[0013] Tea polyphenols are a strong antioxidant that can inhibit oxidation reactions, thereby reducing the oxidation process of malodorous gases. In addition, tea polyphenols have strong antibacterial ability and can effectively inhibit the odorous volatiles produced by bacterial metabolism. In the present invention, peppermint oil and tea polyphenols work together to not only mask the malodor from the smell, but also reduce the generation of malodorous substances from the biochemical level, achieving a multi-level odor suppression effect.

[0014] Secondly, peppermint oil and tea polyphenols can penetrate into the pores of porous polymer particles to form a stable loading structure, which prolongs the release period of peppermint oil and tea polyphenols and makes the deodorizing effect of the inhibitor more lasting.

[0015] Furthermore, the porous polymer particles are prepared by comprising the following components in parts by weight: 30-42 parts of polysulfone, 20-25 parts of N,N-dimethylacetamide, and 30-35 parts of diethylene glycol.

[0016] Furthermore, the preparation method of the porous polymer particles is as follows:

[0017] Step A1: polysulfone, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0018] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0019] Step A3: crushing the washed meltblown nonwoven fabric into particles with an average particle size of 0.5-2 mm;

[0020] Melt-blown nonwoven fabrics are prepared by melt-blowing equipment. A mixture of polysulfone, N,N-dimethylacetamide and diethylene glycol is used to ensure that the polysulfone is uniformly melted and forms fibers through the spinneret. The nonwoven fabric formed by this process has a stable pore structure. The melt-blowing process can accurately control the diameter and porosity of the fibers, thereby ensuring that the porous polymer particles formed have a consistent pore size distribution (50-100μm). This uniform pore structure lays the foundation for subsequent applications such as adsorption, catalysis or odor removal, and improves the functionality and adsorption efficiency of the particles. In addition, in the melt-blowing process, polysulfone, N,N-dimethylacetamide and diethylene glycol will not only melt into filaments, but also cause phase separation on the surface of polysulfone, thereby forming a rough porous structure on the surface and increasing the specific surface area of ​​the polysulfone particles. The use of 50% mass concentration of ethanol and deionized water can effectively remove residual solvents and impurities in the nonwoven fabric, such as N,N-dimethylacetamide and diethylene glycol. This step ensures the purity of the particles and eliminates the adverse effects of potential solvent residues on performance.

[0021] Furthermore, the porous polymer particles also include 3-5 parts by weight of nano titanium dioxide.

[0022] Furthermore, the D50 particle size of the nano titanium dioxide is 30-50 nm.

[0023] Nano titanium dioxide (TiO2) as a photocatalyst can generate photogenerated electrons and holes under light conditions, thereby stimulating oxidation reactions and decomposing volatile organic compounds (VOCs) and malodorous gases such as hydrogen sulfide. Although the light conditions in livestock and poultry breeding environments may not be sufficient, nano titanium dioxide can still provide a certain catalytic activity even under weak light, which enables the inhibitor to work effectively under various lighting conditions. Furthermore, deodorants containing nano titanium dioxide can be recycled by flushing and exposure. Although the deodorizing ability of the recycled deodorant is reduced to a certain extent, it can effectively reduce the cost of deodorization. The porous structure of the deodorant itself can still be used to improve the deodorizing effect with other deodorizing agents or sprays in the farm.

[0024] Furthermore, the average pore size of the porous polymer particles is 50-100 μm.

[0025] Furthermore, the porous polymer particles also include 1-2 parts by weight of nano iron oxide particles.

[0026] Furthermore, the average particle size of the nano iron oxide particles is 50-100 nm.

[0027] Furthermore, the method for preparing the porous polymer microparticles added with nano iron oxide particles comprises the following steps:

[0028] Step A1: polysulfone, nano iron oxide particles, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0029] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0030] Step A3: crushing the cleaned meltblown nonwoven fabric into particles with an average particle size of 0.5-2 mm.

[0031] Nano iron oxide particles can catalyze hydrogen sulfide and other sulfur-containing odorous gases into harmless sulfur through redox reactions, thereby effectively removing hydrogen sulfide odor. The particle size of nano iron oxide is 50-100nm, with a large specific surface area and good catalytic performance. Combined with the porous structure of polysulfone particles, nano iron oxide is evenly distributed on the surface of the material, greatly increasing its contact area with odor molecules and improving the odor removal efficiency.

[0032] A preparation method of livestock and poultry breeding odor inhibitor:

[0033] S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles;

[0034] S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

[0035] The preparation method provided by the present invention is simple and easy to operate. In particular, in step S1, the peppermint oil and tea polyphenols are heated and volatilized at 50° C., and the volatilized gas is circulated into a container containing porous polymer particles, so that the peppermint oil and tea polyphenols can be uniformly adsorbed. This treatment method can allow the peppermint oil and tea polyphenols to penetrate into the pores of the porous polymer particles to form a stable loading structure, prolong the release cycle of the peppermint oil and tea polyphenols, and make the deodorizing effect of the inhibitor more durable.

[0036] In addition, during the preparation process, the steps of adding nano iron oxide particles and nano titanium dioxide particles also help improve the adsorption and catalytic properties of the material. By evenly dispersing the nanoparticles in the porous polymer matrix, it can ensure that these nanomaterials are fully in contact with gas molecules during the odorous gas treatment process, maximizing the gas removal efficiency.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The livestock and poultry breeding odor inhibitor of the present invention exhibits excellent deodorizing, antibacterial and malodorous gas decomposition performance by combining the synergistic effects of porous polymer particles, peppermint oil, tea polyphenols and nanomaterials (nano titanium dioxide, nano iron oxide).

[0039] First, porous polymer particles have high chemical stability, thermal stability and mechanical strength, and can maintain structural stability for a long time in high temperature, high humidity and acid-base environments. Its porous structure provides abundant pores and a large specific surface area, which can effectively absorb malodorous gases such as ammonia and hydrogen sulfide generated during livestock and poultry breeding, thereby significantly improving the deodorization efficiency.

[0040] Secondly, peppermint oil and tea polyphenols, as natural deodorizing and antibacterial ingredients, can mask bad odors and inhibit bacterial growth. Menthol and menthone in peppermint oil give a fresh smell while inhibiting anaerobic bacteria and reducing the source of odor. Tea polyphenols have strong antioxidant and antibacterial effects, can reduce the oxidation of odors, and effectively inhibit the production of odorous volatiles during bacterial metabolism.

[0041] As a photocatalyst, nano-titanium dioxide can decompose volatile organic compounds (VOCs) and malodorous gases such as hydrogen sulfide under light conditions, improving the odor removal effect. Even under weak light conditions, nano-titanium dioxide still has a certain catalytic activity, ensuring that the inhibitor works effectively in different environments. Nano-iron oxide catalyzes hydrogen sulfide and other sulfur-containing malodorous gases into harmless sulfur through redox reactions, thereby further enhancing the removal efficiency of hydrogen sulfide.

[0042] The preparation process adopted by the present invention is simple and easy to operate. The porous polymer particles are efficiently prepared through melt-blowing molding, solvent cleaning and crushing, and the release cycle of peppermint oil and tea polyphenols is extended by heating volatilization and adsorption, thereby ensuring the lasting deodorizing effect of the inhibitor. DETAILED DESCRIPTION

[0043] The present invention is described in detail below in conjunction with embodiments.

[0044] Example 1

[0045] A livestock and poultry breeding odor inhibitor, comprising the following components in parts by weight:

[0046] 30 parts of porous polymer particles;

[0047] 5 parts of peppermint oil;

[0048] Tea polyphenols 5 parts;

[0049] The porous polymer particles are prepared by including the following components in parts by weight: 30 parts of polysulfone, 20 parts of N,N-dimethylacetamide, and 30 parts of diethylene glycol.

[0050] The preparation method of porous polymer microparticles is as follows:

[0051] Step A1: polysulfone, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0052] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0053] Step A3: crushing the washed meltblown nonwoven fabric into particles with an average particle size of 1 mm;

[0054] The average pore size of the porous polymer microparticles was 50 μm.

[0055] Preparation method of livestock and poultry breeding odor inhibitor:

[0056] S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles;

[0057] S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

[0058] Example 2

[0059] A livestock and poultry breeding odor inhibitor, comprising the following components in parts by weight:

[0060] 40 parts of porous polymer particles;

[0061] 10 parts of peppermint oil;

[0062] Tea polyphenols 10 parts;

[0063] The porous polymer particles are prepared by including the following components in parts by weight: 42 parts of polysulfone, 25 parts of N,N-dimethylacetamide, and 35 parts of diethylene glycol.

[0064] The preparation method of porous polymer microparticles is as follows:

[0065] Step A1: polysulfone, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0066] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0067] Step A3: The cleaned meltblown nonwoven fabric is crushed into particles with an average particle size of 1 mm.

[0068] The average pore size of the porous polymer microparticles was 50 μm.

[0069] Preparation method of livestock and poultry breeding odor inhibitor:

[0070] S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles;

[0071] S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

[0072] Example 3

[0073] A livestock and poultry breeding odor inhibitor, comprising the following components in parts by weight:

[0074] 35 parts of porous polymer particles;

[0075] 7 parts of peppermint oil;

[0076] Tea polyphenols 7 parts;

[0077] The porous polymer particles are prepared by including the following components in parts by weight: 36 parts of polysulfone, 23 parts of N,N-dimethylacetamide, and 32 parts of diethylene glycol.

[0078] The preparation method of porous polymer microparticles is as follows:

[0079] Step A1: polysulfone, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0080] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0081] Step A3: The cleaned meltblown nonwoven fabric is crushed into particles with an average particle size of 1 mm.

[0082] The average pore size of the porous polymer microparticles was 50 μm.

[0083] Preparation method of livestock and poultry breeding odor inhibitor:

[0084] S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles;

[0085] S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

[0086] Example 4

[0087] A livestock and poultry breeding odor inhibitor, comprising the following components in parts by weight:

[0088] 30 parts of porous polymer particles;

[0089] 5 parts of peppermint oil;

[0090] Tea polyphenols 5 parts;

[0091] The porous polymer particles are prepared by including the following components in parts by weight: 42 parts of polysulfone, 25 parts of N,N-dimethylacetamide, and 35 parts of diethylene glycol.

[0092] The preparation method of porous polymer microparticles is as follows:

[0093] Step A1: polysulfone, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0094] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0095] Step A3: The cleaned meltblown nonwoven fabric is crushed into particles with an average particle size of 1 mm.

[0096] The average pore size of the porous polymer microparticles was 50 μm.

[0097] Preparation method of livestock and poultry breeding odor inhibitor:

[0098] S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles;

[0099] S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

[0100] Example 5

[0101] A livestock and poultry breeding odor inhibitor, comprising the following components in parts by weight:

[0102] 40 parts of porous polymer particles;

[0103] 10 parts of peppermint oil;

[0104] Tea polyphenols 10 parts;

[0105] The porous polymer particles are prepared by including the following components in parts by weight: 30 parts of polysulfone, 20 parts of N,N-dimethylacetamide, and 30 parts of diethylene glycol.

[0106] The preparation method of porous polymer microparticles is as follows:

[0107] Step A1: polysulfone, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0108] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0109] Step A3: The cleaned meltblown nonwoven fabric is crushed into particles with an average particle size of 1 mm.

[0110] The average pore size of the porous polymer microparticles was 50 μm.

[0111] Preparation method of livestock and poultry breeding odor inhibitor:

[0112] S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles;

[0113] S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

[0114] Example 6

[0115] A livestock and poultry breeding odor inhibitor, comprising the following components in parts by weight:

[0116] 40 parts of porous polymer particles;

[0117] 10 parts of peppermint oil;

[0118] Tea polyphenols 10 parts;

[0119] The porous polymer particles are prepared by including the following components in parts by weight: 30 parts of polysulfone, 20 parts of N,N-dimethylacetamide, 30 parts of diethylene glycol, and 3 parts of nano titanium dioxide, wherein the D50 particle size of the nano titanium dioxide is 30 nm.

[0120] The preparation method of porous polymer microparticles is as follows:

[0121] Step A1: polysulfone, nano-titanium dioxide, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0122] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0123] Step A3: The cleaned meltblown nonwoven fabric is crushed into particles with an average particle size of 1 mm.

[0124] The average pore size of the porous polymer microparticles was 50 μm.

[0125] Preparation method of livestock and poultry breeding odor inhibitor:

[0126] S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles;

[0127] S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

[0128] Example 7

[0129] A livestock and poultry breeding odor inhibitor, comprising the following components in parts by weight:

[0130] 40 parts of porous polymer particles;

[0131] 10 parts of peppermint oil;

[0132] Tea polyphenols 10 parts;

[0133] The porous polymer particles are prepared by including the following components in parts by weight: 30 parts of polysulfone, 20 parts of N,N-dimethylacetamide, 30 parts of diethylene glycol, and 5 parts of nano titanium dioxide, wherein the D50 particle size of the nano titanium dioxide is 50 nm.

[0134] The preparation method of porous polymer microparticles is as follows:

[0135] Step A1: polysulfone, nano-titanium dioxide, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0136] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0137] Step A3: The cleaned meltblown nonwoven fabric is crushed into particles with an average particle size of 1 mm.

[0138] The average pore size of the porous polymer microparticles was 50 μm.

[0139] Preparation method of livestock and poultry breeding odor inhibitor:

[0140] S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles;

[0141] S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

[0142] Example 8

[0143] A livestock and poultry breeding odor inhibitor, comprising the following components in parts by weight:

[0144] 40 parts of porous polymer particles;

[0145] 10 parts of peppermint oil;

[0146] Tea polyphenols 10 parts;

[0147] The porous polymer particles are prepared by including the following components in parts by weight: 30 parts of polysulfone, 20 parts of N,N-dimethylacetamide, 30 parts of diethylene glycol, and 4 parts of nano titanium dioxide, wherein the D50 particle size of the nano titanium dioxide is 40 nm.

[0148] The preparation method of porous polymer microparticles is as follows:

[0149] Step A1: polysulfone, nano-titanium dioxide, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0150] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0151] Step A3: The cleaned meltblown nonwoven fabric is crushed into particles with an average particle size of 1 mm.

[0152] The average pore size of the porous polymer microparticles was 50 μm.

[0153] Preparation method of livestock and poultry breeding odor inhibitor:

[0154] S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles;

[0155] S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

[0156] Example 9

[0157] A livestock and poultry breeding odor inhibitor, comprising the following components in parts by weight:

[0158] 40 parts of porous polymer particles;

[0159] 10 parts of peppermint oil;

[0160] Tea polyphenols 10 parts;

[0161] The porous polymer particles are prepared by including the following components in parts by weight: 30 parts of polysulfone, 20 parts of N,N-dimethylacetamide, 30 parts of diethylene glycol, and 3 parts of nano titanium dioxide, wherein the D50 particle size of the nano titanium dioxide is 50 nm.

[0162] The preparation method of porous polymer microparticles is as follows:

[0163] Step A1: polysulfone, nano-titanium dioxide, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0164] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0165] Step A3: The cleaned meltblown nonwoven fabric is crushed into particles with an average particle size of 1 mm.

[0166] The average pore size of the porous polymer microparticles was 50 μm.

[0167] Preparation method of livestock and poultry breeding odor inhibitor:

[0168] S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles;

[0169] S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

[0170] Example 10

[0171] A livestock and poultry breeding odor inhibitor, comprising the following components in parts by weight:

[0172] 40 parts of porous polymer particles;

[0173] 10 parts of peppermint oil;

[0174] Tea polyphenols 10 parts;

[0175] The porous polymer particles are prepared by including the following components in parts by weight: 30 parts of polysulfone, 20 parts of N,N-dimethylacetamide, 30 parts of diethylene glycol, and 5 parts of nano titanium dioxide, wherein the D50 particle size of the nano titanium dioxide is 30 nm.

[0176] The preparation method of porous polymer microparticles is as follows:

[0177] Step A1: polysulfone, nano-titanium dioxide, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0178] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0179] Step A3: The cleaned meltblown nonwoven fabric is crushed into particles with an average particle size of 1 mm.

[0180] The average pore size of the porous polymer microparticles was 50 μm.

[0181] Preparation method of livestock and poultry breeding odor inhibitor:

[0182] S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles;

[0183] S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

[0184] Embodiment 11

[0185] A livestock and poultry breeding odor inhibitor, comprising the following components in parts by weight:

[0186] 40 parts of porous polymer particles;

[0187] 10 parts of peppermint oil;

[0188] Tea polyphenols 10 parts;

[0189] The porous polymer particles are prepared by including the following components in parts by weight: 30 parts of polysulfone, 20 parts of N,N-dimethylacetamide, 30 parts of diethylene glycol, 5 parts of nano titanium dioxide, and 1 part of nano iron oxide particles. The D50 particle size of the nano titanium dioxide is 30 nm, and the average particle size of the nano iron oxide particles is 50 nm.

[0190] The preparation method of porous polymer microparticles is as follows:

[0191] Step A1: polysulfone, nano iron oxide particles, nano titanium dioxide, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0192] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0193] Step A3: The cleaned meltblown nonwoven fabric is crushed into particles with an average particle size of 1 mm.

[0194] The average pore size of the porous polymer microparticles was 50 μm.

[0195] Preparation method of livestock and poultry breeding odor inhibitor:

[0196] S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles;

[0197] S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

[0198] Example 12

[0199] A livestock and poultry breeding odor inhibitor, comprising the following components in parts by weight:

[0200] 40 parts of porous polymer particles;

[0201] 10 parts of peppermint oil;

[0202] Tea polyphenols 10 parts;

[0203] The porous polymer particles are prepared by including the following components in parts by weight: 30 parts of polysulfone, 20 parts of N,N-dimethylacetamide, 30 parts of diethylene glycol, 5 parts of nano titanium dioxide, and 2 parts of nano iron oxide particles, wherein the D50 particle size of the nano titanium dioxide is 30 nm, and the average particle size of the nano iron oxide particles is 100 nm.

[0204] The preparation method of porous polymer microparticles is as follows:

[0205] Step A1: polysulfone, nano iron oxide particles, nano titanium dioxide, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0206] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0207] Step A3: The cleaned meltblown nonwoven fabric is crushed into particles with an average particle size of 1 mm.

[0208] The average pore size of the porous polymer microparticles was 50 μm.

[0209] Preparation method of livestock and poultry breeding odor inhibitor:

[0210] S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles;

[0211] S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

[0212] Embodiment 13

[0213] A livestock and poultry breeding odor inhibitor, comprising the following components in parts by weight:

[0214] 40 parts of porous polymer particles;

[0215] 10 parts of peppermint oil;

[0216] Tea polyphenols 10 parts;

[0217] The porous polymer particles are prepared by including the following components in parts by weight: 30 parts of polysulfone, 20 parts of N,N-dimethylacetamide, 30 parts of diethylene glycol, 5 parts of nano titanium dioxide, and 1.5 parts of nano iron oxide particles, wherein the D50 particle size of the nano titanium dioxide is 30 nm, and the average particle size of the nano iron oxide particles is 80 nm.

[0218] The preparation method of porous polymer microparticles is as follows:

[0219] Step A1: polysulfone, nano iron oxide particles, nano titanium dioxide, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0220] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0221] Step A3: The cleaned meltblown nonwoven fabric is crushed into particles with an average particle size of 1 mm.

[0222] The average pore size of the porous polymer microparticles was 50 μm.

[0223] Preparation method of livestock and poultry breeding odor inhibitor:

[0224] S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles;

[0225] S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

[0226] Embodiment 14

[0227] A livestock and poultry breeding odor inhibitor, comprising the following components in parts by weight:

[0228] 40 parts of porous polymer particles;

[0229] 10 parts of peppermint oil;

[0230] Tea polyphenols 10 parts;

[0231] The porous polymer particles are prepared by including the following components in parts by weight: 30 parts of polysulfone, 20 parts of N,N-dimethylacetamide, 30 parts of diethylene glycol, 5 parts of nano titanium dioxide, and 1 part of nano iron oxide particles. The D50 particle size of the nano titanium dioxide is 30 nm, and the average particle size of the nano iron oxide particles is 100 nm.

[0232] The preparation method of porous polymer microparticles is as follows:

[0233] Step A1: polysulfone, nano iron oxide particles, nano titanium dioxide, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0234] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0235] Step A3: The cleaned meltblown nonwoven fabric is crushed into particles with an average particle size of 1 mm.

[0236] The average pore size of the porous polymer microparticles was 50 μm.

[0237] Preparation method of livestock and poultry breeding odor inhibitor:

[0238] S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles;

[0239] S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

[0240] Embodiment 15

[0241] A livestock and poultry breeding odor inhibitor, comprising the following components in parts by weight:

[0242] 40 parts of porous polymer particles;

[0243] 10 parts of peppermint oil;

[0244] Tea polyphenols 10 parts;

[0245] The porous polymer particles are prepared by including the following components in parts by weight: 30 parts of polysulfone, 20 parts of N,N-dimethylacetamide, 30 parts of diethylene glycol, 5 parts of nano titanium dioxide, and 2 parts of nano iron oxide particles, wherein the D50 particle size of the nano titanium dioxide is 30 nm, and the average particle size of the nano iron oxide particles is 50 nm.

[0246] The preparation method of porous polymer microparticles is as follows:

[0247] Step A1: polysulfone, nano iron oxide particles, nano titanium dioxide, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric;

[0248] Step A2: The meltblown nonwoven fabric was washed with 50% mass concentration ethanol and deionized water in sequence, and dried at room temperature.

[0249] Step A3: The cleaned meltblown nonwoven fabric is crushed into particles with an average particle size of 1 mm.

[0250] The average pore size of the porous polymer microparticles was 50 μm.

[0251] Preparation method of livestock and poultry breeding odor inhibitor:

[0252] S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles;

[0253] S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

[0254] Comparative Example 1 uses QSLR-SS-T1020 composite bio-enzyme deodorant produced by Wuhan Qingsen Langrun Environmental Technology Co., Ltd.

[0255] The difference between Comparative Example 2 and Example 1 is that the preparation method of the livestock and poultry breeding odor inhibitor is as follows: peppermint oil, tea polyphenols and porous polymer particles are uniformly mixed.

[0256] Detection Methods

[0257] 1700 weaned piglets weighing 6.0 kg were selected and randomly allocated to 17 pig houses, which were marked as Examples 1-15 and Comparative Examples 1-2. Deodorants were placed in the pig houses, with 100 pigs in each house. Each group was fed the same corn-soybean meal basal diet every day, and had free access to food and water. The pig houses were disinfected with 1% disinfectant before use. Each pig house had an area of ​​500 m 2 , 16 pig pen ventilation windows are evenly set. The test period is 28 days. During the test, the concentrations of ammonia and hydrogen sulfide in the pig house are measured three times a day with a DragerX-am7000 portable gas detector, that is, once in the morning (6:00-7:00), noon (12:00-13:00), and evening (19:00-20:00). Three points are selected on the central axis of the pig house, 50-80cm above the ground, and the DragerX-am7000 portable gas detector is hung in the air. After the data is stable, it is recorded and averaged to calculate the concentration reduction rate of ammonia and hydrogen sulfide.

[0258] Daily concentration reduction rate (%) = (maximum daily concentration value during the test period - minimum daily concentration value during the test period) / maximum daily concentration value during the test period × 100%;

[0259] The overall concentration reduction rate (%) is the sum of the daily concentration reduction rates for 28 days divided by 28.

[0260] The test results are shown in Table 1.

[0261]

[0262] Conclusion: It can be seen from the above test results that the livestock and poultry breeding odor inhibitor prepared by the present invention has a good deodorizing and antibacterial effect, and its overall durability is also higher.

[0263] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A livestock and poultry breeding odor inhibitor, characterized in that: The composition comprises the following components in parts by weight: 30-40 parts of porous polymer particles; 5-10 parts of peppermint oil; Tea polyphenols 5-10 parts; The porous polymer particles are prepared by comprising the following components in parts by weight: 30-42 parts of polysulfone, 20-25 parts of N,N-dimethylacetamide, and 30-35 parts of diethylene glycol; The porous polymer particles also include 1-2 parts by weight of nano iron oxide particles; The method for preparing porous polymer microparticles added with nano iron oxide particles comprises the following steps: Step A1: polysulfone, nano iron oxide particles, N,N-dimethylacetamide and diethylene glycol are mixed in proportion, and then passed through a melt-blown device to obtain a melt-blown non-woven fabric; Step A2: washing the meltblown nonwoven fabric with 50% mass concentration ethanol and deionized water in sequence, and drying at room temperature; Step A3: crushing the washed meltblown nonwoven fabric into particles with an average particle size of 0.5-2 mm; The peppermint oil and tea polyphenols are heated and volatilized into gas and then infiltrated and precipitated in the porous polymer particles.

2. The livestock and poultry breeding odor suppressor according to claim 1, characterized in that: The porous polymer particles also include 3-5 parts by weight of nano titanium dioxide.

3. The livestock and poultry breeding odor suppressor according to claim 2, characterized in that: The D50 particle size of the nano titanium dioxide is 30-50nm.

4. The livestock and poultry breeding odor suppressor according to claim 1, characterized in that: The average pore size of the porous polymer particles is 50-100 μm.

5. The livestock and poultry breeding odor suppressor according to claim 1, characterized in that: The average particle size of the nano iron oxide particles is 50-100 nm.

6. A method for preparing a livestock and poultry breeding odor inhibitor according to any one of claims 1 to 5: S1: heating peppermint oil and tea polyphenols at 50°C, and circulating the heated volatilized gas into a container containing porous polymer particles; S2: After the peppermint oil and tea polyphenols are completely volatilized, the porous polymer particles are cooled.

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