A method for purifying pigsty air through plant-derived microecological fermentation

Abstract

This invention discloses a method for purifying pigsty air through plant-derived microecological fermentation, belonging to the field of agricultural technology. This invention utilizes the liquid obtained from the two-phase fermentation of pine needles and citrus fruit peels as a base material, combined with chitin and wood vinegar. This not only purifies the air in pigsties, removing ammonia and hydrogen sulfide, and improving the microenvironment for pig growth, but also promotes the utilization of biomass resources, reduces the use of chemical disinfectants, saves breeding costs, and improves animal welfare. Furthermore, this invention features a simple preparation method, rapid effectiveness, and environmental friendliness. The prepared deodorizer has good water solubility and can be used in atomization, meeting the requirements of welfare-oriented farming and reducing environmental pollution.

Description

Technical Field

[0001] This invention relates to the field of agricultural technology, and more specifically to a method for purifying the air in pigsties through plant-derived microecological fermentation. Background Technology

[0002] In modern large-scale pig farming, high stocking densities and the frequent use of water flushing or soaking to treat manure result in poor air quality in pigsties. While this can be improved through mechanical forced ventilation, it requires significant production investment and equipment management. Chemical deodorization can also be used, but it causes secondary pollution and poses certain health risks to pigs and management personnel. Therefore, a multi-functional purifier that combines sterilization, disinfection, and deodorization is essential for achieving intensive pig farming.

[0003] Biological deodorizers are environmentally friendly. Existing methods utilize earthworm castings fermentation to prepare biological deodorizers, but this requires earthworm farming, which is technically challenging. The biological disinfectant disclosed in patent CN 202310177574.5 is designed for deodorizing and preserving fishpond sludge, but it is difficult to effectively treat sludge in pig farming.

[0004] Therefore, how to provide a facility environmental purification method that has a wide range of raw material sources, low production costs, quick results, and multiple functions is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides a method for purifying the air in pigsties through plant-based microecological fermentation. Using pine needles and citrus fruit peels as raw materials not only achieves waste reduction and high-value utilization, but also improves the microenvironment for pig growth and promotes the scale and progress of welfare-oriented pig farming.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A method for purifying air in a pigsty through plant-derived microecological fermentation, the method comprising spraying a liquid purifier into the pigsty and in-situ fermentation purification using a solid fermentation bed; specifically including the following steps:

[0008] (1) After mixing pine needles and citrus fruit peels evenly, a fermentation substrate is obtained;

[0009] (2) Add molasses and water to the fermentation substrate and stir until the molasses is completely dissolved to obtain fermentation mixture A;

[0010] (3) Place the fermentation mixture A at room temperature for aerobic fermentation for 30 days to obtain aerobic fermentation product B;

[0011] (4) Place the aerobic fermentation product B in a sealed container and seal it for 60-90 days to obtain the anaerobic fermentation product C;

[0012] (5) The anaerobic fermentation product C was allowed to settle naturally to obtain supernatant D and solid residue E;

[0013] (6) Dissolve chitin in wood vinegar to obtain solution F;

[0014] (7) Mix and dilute solutions D, F and wood vinegar in equal proportions for use; store each liquid separately in a container, and prepare the solution as needed to obtain the liquid purifier.

[0015] (8) Mix the solid residue E and the puffed straw and place them on the fermentation bed in the house for in-situ fermentation.

[0016] Optionally, the citrus fruit peel is orange peel, grapefruit peel, tangerine peel, or lemon peel, and the citrus fruit peel accounts for 5-10% of the total weight.

[0017] Furthermore, the pine needles are cut to a length of 1-2 cm, and the citrus fruit peels are selected from those that are free from rot and mold, and cut into 1-2 cm pieces. 2 .

[0018] Beneficial effects achieved: The properties of fermentation liquid obtained after fermentation of different organic raw materials vary greatly. Fermentation liquid produced using pine needles and citrus peels as substrates not only has deodorizing function, but also has a special aroma, which enhances its purification function.

[0019] Optionally, in step (2), the mass ratio of fermentation substrate, molasses and water is 3:1:10.

[0020] Furthermore, in step (3), the container should be stirred every 2-3 days to prevent gas from damaging it, and plastic containers should be used as much as possible.

[0021] The beneficial effects achieved include: enabling the fermentation substrate to ferment completely, fully releasing active substances, and dissolving them in the fermentation broth.

[0022] Optionally, in step (6), the chitin has a mass concentration of 0.5-1% and is dissolved in refined wood vinegar.

[0023] Beneficial effects achieved: The above solvent can reduce production costs, improve the solubility of chitin, has a moderate viscosity at this concentration, is easy to operate, enhances gas adsorption, and improves purification effect.

[0024] Furthermore, the wood vinegar in step (7) is commercially available refined wood vinegar, which ensures its solubility and prevents clogging of the spraying equipment.

[0025] Optionally, the supernatant D, solution F, and wood vinegar are diluted 20-40 times before use.

[0026] It should be noted that the superior effects of the technical solution described in this invention compared to the prior art are as follows:

[0027] (1) Ordinary biological deodorants are made by either using plant extracts or by special microbial strains through special cultivation. They require microbial resources and professional skills to operate. However, using pine needles and citrus peels can save the above complicated operations.

[0028] (2) Usually, biological deodorizers have a single function. In addition to deodorizing, the method of the present invention also has the functions of sterilization and disinfection.

[0029] (3) Traditional pig farming has a low manure conversion rate and is difficult to treat. Using fermentation residue and puffed straw as mixed bedding can not only improve the degradation rate of manure, but also reduce the generation of odor and decompose and transform it quickly from the source, improve the welfare of pigs, and realize healthy and ecological pig farming.

[0030] In addition, the present invention uses fermentation residue and straw as raw materials to prepare fermentation mattress material, and places it in situ for fermentation in the shed.

[0031] Beneficial effects achieved: The fermentation residue contains a variety of microorganisms and enzymes, which can not only enhance the rich microbial community of the fermentation bed and improve the in-situ rapid degradation and transformation of manure, but also expand the straw to regulate the moisture of the material, improve the properties of the fermentation bed, and achieve multiple benefits such as air purification, manure transformation and resource utilization.

[0032] As can be seen from the above technical solution, compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0033] 1) This invention provides a method for purifying the air in pigsties through plant-derived microecological fermentation, using pine needles and citrus fruit peels as raw materials for air purification. This not only enables the high-value utilization of forestry waste, but also promotes the rapid development of waste reduction and facilitates the sustainability and welfare of pig farming.

[0034] 2) The method for purifying air in pigsties disclosed in this invention is characterized by being natural, environmentally friendly, and simple to operate. The fermentation liquid in the deodorizer of this invention contains acidic substances such as lactic acid, acetic acid, and malic acid, a complex enzyme system composed of amylase and lipase, bioactive polysaccharides, and various microorganisms such as lactic acid bacteria, yeast, and Bacillus. The wood vinegar contains a high content of acetic acid, and chitin is a polysaccharide with high viscosity. Therefore, the liquid purifier of this invention, when sprayed in the pigsty and combined with in-situ fermentation purification on a solid fermentation bed, can not only remove odors from the pigsty but also has bactericidal and disinfecting effects.

[0035] 3) Fermentation residue and puffed straw are used as fermentation bedding materials. Because they are rich in microorganisms and the flexible straw can improve the properties of the bedding and achieve rapid conversion and decomposition of manure, the pig farming and environmental protection can be taken into account. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0037] Figure 1 The attached figure is a process flow diagram disclosed in this invention. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] The reagents required for this invention were purchased from commercially available channels; the experimental methods not mentioned are conventional experimental methods and will not be described in detail here.

[0040] Example 1

[0041] A method for purifying pigsty air through plant-derived microecological fermentation, the specific steps of which are as follows:

[0042] (1) After washing and removing dust from the pine needles and citrus peels, cut them into 1-2cm pieces. The citrus peels should account for 10% of the weight. Mix them evenly and set aside.

[0043] (2) Weigh out the molasses and add it to the water. After it is completely dissolved, add the mixture of pine needles and fruit peels. The ratio of the mixture of pine needles and fruit peels to molasses to water is 3:1:10 to obtain fermentation mixture A.

[0044] (3) Place liquid A at room temperature for aerobic fermentation for 30 days, stirring and opening the lid every 2 days to obtain aerobic fermentation product B;

[0045] (4) Place B in a sealed container and leave it at room temperature for more than 60 days to obtain anaerobic fermentation product C;

[0046] (5) Remove the supernatant from C to obtain solution D and solid residue E;

[0047] (6) Weigh out chitin and dissolve it in refined wood vinegar to obtain solution F with a mass concentration of 0.5%.

[0048] Table 1 Comparison of properties of fermented mattress materials after 30 days

[0049]

[0050] The bedding material in the treatment group consisted of straw with added fermentation residue, while the bedding material in the control group consisted of only straw. As shown in Table 1, the organic matter content in the bedding material containing fermentation residue was lower than that in the control group, indicating that the fermentation residue in the treatment group played a role in the degradation of organic matter. Furthermore, the carbon-nitrogen ratio is an important indicator of decomposition, and the carbon-nitrogen ratio in the treatment group was lower than that in the control group, indicating a higher degree of decomposition.

[0051] Solution D, solution F, and refined wood vinegar were mixed in a 1:1:1 ratio and then added to water. The mixture was diluted 20, 40, 60, and 100 times, respectively. After spraying the solution onto the pigsty, the levels of ammonia, hydrogen sulfide, and total bacteria were measured. The results are shown in Table 2.

[0052] Table 2. Effects of different dilution ratios on the indoor environment.

[0053]

[0054] As can be seen from Table 2, the purification effect is best when the dilution ratio is 20 times.

[0055] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for purifying pigsty air through plant-derived microecological fermentation, characterized in that, The method includes spraying a liquid purifying agent inside the facility and in-situ fermentation purification using a solid fermentation bed; specifically, it includes the following steps: (1) Mix pine needles and citrus fruit peels evenly to obtain a fermentation substrate, and set aside; (2) Add molasses and water to the fermentation substrate and stir to obtain fermentation mixture A; (3) The fermentation mixture A was aerobically fermented at room temperature for 30 days to obtain aerobic fermentation product B; (4) Seal the aerobic fermentation product B for 60-90 days to obtain the anaerobic fermentation product C; (5) The anaerobic fermentation product C settles naturally to obtain supernatant D and solid residue E; (6) Dissolve chitin in wood vinegar to obtain solution F; (7) The supernatant D, solution F and wood vinegar are mixed and diluted to obtain the liquid purifying agent; (8) After mixing the solid residue E and the puffed straw, place them on the fermentation bed in the house for in-situ fermentation.

2. The method for purifying pigsty air through plant-derived microecological fermentation as described in claim 1, characterized in that, The citrus fruit peel is orange peel, grapefruit peel, tangerine peel, or lemon peel, and the citrus fruit peel accounts for 5-10% of the total weight.

3. A method for purifying pigsty air through plant-derived microecological fermentation as described in claim 1 or 2, characterized in that, In step (1), the pine needles are cut to a length of 1-2 cm, and the citrus peels are selected from those that are free from rot and mold, and cut into 1-2 cm pieces. 2 .

4. The method for purifying pigsty air through plant-derived microecological fermentation as described in claim 1, characterized in that, In step (2), the mass ratio of fermentation substrate, molasses and water is 3:1:

10.

5. The method for purifying pigsty air through plant-derived microecological fermentation as described in claim 1, characterized in that, In step (6), the mass concentration of chitin is 0.5% to 1%.

6. The method for purifying pigsty air through plant-derived microecological fermentation as described in claim 1, characterized in that, The wood vinegar is commercially available refined wood vinegar.

7. The method for purifying pigsty air through plant-derived microecological fermentation as described in claim 1, characterized in that, The supernatant D, solution F, and wood vinegar are mixed in equal proportions and diluted 20-40 times before use.

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