A method and application of preparing organic fertilizer by coupling persulfate with molecular membrane

Abstract

The present invention discloses a method and application of preparing organic fertilizer by coupling persulfate with a molecular membrane, and belongs to the field of agricultural technology. The method of preparing organic fertilizer by coupling persulfate with a molecular membrane provided by the present invention comprises the following steps: mixing organic waste with persulfate to form a pile, an aeration device is arranged below the pile, a molecular membrane is arranged above the pile, the aeration device and the molecular membrane form a closed environment, the aeration device is started for aeration, and the organic fertilizer is obtained after aerobic composting. The present invention uses the micro-positive pressure formed by the molecular membrane micropores blocking part of the gas from escaping to increase the oxygen penetration rate, and couples the persulfate oxidant to effectively reduce the greenhouse gases and odors generated in the aerobic composting process without reducing the aerobic composting temperature, composting efficiency, and humification process, thereby achieving good organic waste treatment and greenhouse gas emission reduction effects.

Description

Technical Field

[0001] The invention belongs to the technical field of agriculture, and in particular relates to a method for preparing organic fertilizer by coupling persulfate with a molecular membrane and application thereof. Background Art

[0002] In recent years, with the growth of animal protein production, the amount of livestock and poultry manure produced has also been very huge, up to 4 billion tons / year. High-temperature aerobic composting technology is an important technology for achieving harmless treatment of livestock and poultry manure, converting it into organic fertilizer, and realizing agricultural and animal husbandry cycles. However, aerobic composting technology often forms anaerobic blocks in the pile due to insufficient oxygen penetration, which drives the activity of anaerobic microorganisms and produces a large amount of greenhouse gases and odors such as nitrous oxide and methane. How to carry out the aerobic composting conversion process with quality and quantity while reducing greenhouse gas emissions is an important technical problem that needs to be solved at present. Summary of the invention

[0003] In order to overcome the problems existing in the above-mentioned prior art, one of the objects of the present invention is to provide a method for preparing organic fertilizer by coupling persulfate with a molecular membrane, which can effectively reduce the greenhouse gases and odors generated in the aerobic composting process without reducing the aerobic composting temperature, composting efficiency and humification process.

[0004] A second object of the present invention is to provide an organic fertilizer obtained by the above method.

[0005] The third object of the present invention is to provide an application of the above method in organic waste treatment and greenhouse gas emission reduction.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] The first aspect of the present invention provides a method for preparing organic fertilizer by coupling molecular membrane with persulfate, comprising the following steps: mixing organic waste with persulfate to form a pile, providing an aeration device under the pile, providing a molecular membrane above the pile, the aeration device and the molecular membrane forming a closed environment, starting the aeration device for aeration, and obtaining the organic fertilizer after aerobic composting.

[0008] Preferably, in the method, the content of the persulfate in the pile is 0.1-1 wt %; more preferably 0.3-0.8 wt %; and even more preferably 0.4-0.6 wt %.

[0009] Preferably, in the method, the carbon-nitrogen ratio of the pile is (18-28):1; more preferably (20-25):1.

[0010] Preferably, in the method, the moisture content of the pile is 45-65wt%; more preferably, 50-60wt%.

[0011] Preferably, in the method, the organic waste includes livestock and poultry manure and agricultural and forestry waste.

[0012] Preferably, in the organic waste, the carbon-nitrogen ratio of the livestock and poultry manure is (10-20):1; more preferably (12-16):1.

[0013] Preferably, in the organic waste, the water content of the livestock and poultry manure is 60 to 95 wt %; more preferably, it is 70 to 90 wt %.

[0014] Preferably, among the organic waste, the carbon-nitrogen ratio of the agricultural and forestry waste is (25-35):1; more preferably, it is (27-32):1.

[0015] Preferably, among the organic wastes, the agricultural and forestry wastes include at least one of straw, rice husk, edible fungus matrix, scraps, firewood, bark or peanut shells; further preferably, the agricultural and forestry wastes include at least one of straw, rice husk or edible fungus matrix; further preferably, the agricultural and forestry wastes are selected from edible fungus matrix. In a specific embodiment of the present invention, the agricultural and forestry wastes are selected from mushroom residues.

[0016] Preferably, among the organic waste, the moisture content of the agricultural and forestry waste is 15 to 35 wt %, and more preferably 20 to 30 wt %.

[0017] Preferably, in the method, the aeration is intermittent aeration; the frequency of aeration is once every 2 to 6 hours; more preferably, once every 3 to 5 hours.

[0018] Preferably, in the method, the aeration time for each time is 10 to 30 minutes; more preferably, it is 15 to 25 minutes.

[0019] Preferably, in the method, during aeration, the aeration rate per kilogram of the pile is 0.1 to 0.5 L / min; more preferably, it is 0.2 to 0.3 L / min.

[0020] Preferably, in the method, the aerobic composting time is 15 to 40 days; more preferably 17 to 35 days; and even more preferably 18 to 30 days.

[0021] Preferably, in the method, the aerobic composting includes a temperature rising stage and a high temperature stage; the temperature of the temperature rising stage is ≤60°C, and the temperature of the high temperature stage is >60°C; the time of the temperature rising stage is 1 to 5 days, and the time of the high temperature stage is 14 to 35 days; further preferably, the time of the temperature rising stage is 1 to 3 days, and the time of the high temperature stage is 16 to 32 days; further preferably, the time of the temperature rising stage is 1 to 3 days, and the time of the high temperature stage is 17 to 27 days.

[0022] In a specific embodiment of the present invention, in the method, the compost is not turned during the aerobic composting process.

[0023] In a specific embodiment of the present invention, in the method, no bacterial agent is added during the aerobic composting process.

[0024] The second aspect of the present invention provides an organic fertilizer prepared by the method described in the first aspect of the present invention.

[0025] Preferably, the moisture content of the organic fertilizer is ≤30wt%; more preferably, it is 25-30wt%.

[0026] Preferably, the pH value of the organic fertilizer is 7 to 8.5; more preferably 7.2 to 8; and even more preferably 7.4 to 7.8.

[0027] Preferably, the electrical conductivity of the organic fertilizer is 1.5 to 2.5 mS / cm; more preferably, it is 1.7 to 2.4 mS / cm; and even more preferably, it is 1.8 to 2.2 mS / cm.

[0028] Preferably, the total content of phosphorus, nitrogen and potassium in the organic fertilizer is ≥ 4wt%; more preferably 4-5wt%; further preferably 4.2-4.5wt%.

[0029] Preferably, the organic matter content of the organic fertilizer is ≥30wt%; more preferably, it is 35-60wt%; and even more preferably, it is 40-50wt%.

[0030] Preferably, the sulfate ion content of the organic fertilizer is 3 to 6 g / kg; more preferably 3.5 to 5.5 g / kg; and even more preferably 4 to 5 g / kg.

[0031] Preferably, the humus content of the organic fertilizer is 50-100 g / kg; more preferably, 60-90 g / kg; and even more preferably, 70-80 g / kg.

[0032] Preferably, the seed germination index of the organic fertilizer is ≥70%; more preferably, it is 80-100%; and even more preferably, it is 90-100%.

[0033] The third aspect of the present invention provides an application of the method described in the first aspect of the present invention in organic waste treatment or greenhouse gas emission reduction.

[0034] The beneficial effects of the present invention are as follows: the present invention forms a micro-positive pressure by blocking part of the gas from escaping through the molecular membrane micropores, thereby improving the oxygen penetration rate, coupling the persulfate oxidant, and maximally reducing the anaerobic plates in the pile, thereby promoting the decomposition and conversion activities of aerobic microorganisms, weakening the gas production of anaerobic microorganisms, and effectively reducing the greenhouse gases and odors generated in the aerobic composting process without reducing the aerobic composting temperature, composting efficiency, and humification process, thereby achieving good organic waste treatment and greenhouse gas emission reduction effects.

[0035] Specifically, compared with the prior art, the present invention has the following advantages:

[0036] 1. The present invention mainly utilizes the strong oxidizing property of persulfate and the nitrogen-sulfur interaction mechanism in aerobic composting to regulate and reduce the production of greenhouse gases such as methane, nitrous oxide, carbon dioxide, and odors such as methyl mercaptan and hydrogen sulfide. The dual reduction of greenhouse gases and odors in aerobic composting piles is mainly a process of electron transfer balance. The decomposition of compost organic matter releases electrons. When there is sufficient oxygen, oxygen can serve as an electron acceptor; when the oxygen is consumed, nitrates, sulfates, etc. in the pile will replace oxygen as electron acceptors, thereby producing nitrous oxide and hydrogen sulfide odors. The present invention first uses a molecular membrane to form a micro-positive pressure oxygen penetration layer on the surface to increase the oxygen-rich area on the surface. At the same time, by adding high positive persulfate, the target electron acceptor in the pile is increased, thereby reducing the formation of nitrous oxide and hydrogen sulfide and reducing the loss of nitrate in the pile.

[0037] 2. The present invention utilizes a molecular membrane coupled with persulfate for aerobic composting. Compared with the method without covering the molecular membrane, the high temperature period can be significantly prolonged by 1 to 2 days, the pH of the compost can be effectively reduced, and the compost nitrification process can be effectively improved, so that nitrate nitrogen and nitrite nitrogen are maintained at a high level at the end; at the same time, the aerobic composting technical indicators are effectively maintained to mature.

[0038] 3. The present invention effectively reduces the emission of greenhouse gases and odors while ensuring that the aerobic composting conversion rate is not reduced. In addition, the present invention can reach the high temperature period within 3 days by optimizing specific preparation parameters without adding fermentation agents. The organic fertilizer prepared by the method of the present invention has good composting efficiency, humification degree, high nutrient content, and can meet the agricultural industry standard of the People's Republic of China (NY525-2021). BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 The emission of carbon dioxide gas in Example 1 and Comparative Examples 1 to 3.

[0040] Figure 2 The emission of methane gas in Example 1 and Comparative Examples 1 to 3.

[0041] Figure 3 The emission of nitrous oxide gas in Example 1 and Comparative Examples 1-3.

[0042] Figure 4 The emission of dimethyl disulfide gas in Example 1 and Comparative Examples 1 to 3.

[0043] Figure 5 The emission conditions of methyl mercaptan gas in Example 1 and Comparative Examples 1 to 3 are shown.

[0044] Figure 6 The emission conditions of methyl sulfide gas in Example 1 and Comparative Examples 1 to 3 are shown.

[0045] Figure 7 The emission of hydrogen sulfide gas in Example 1 and Comparative Examples 1 to 3.

[0046] Figure 8 The temperature changes of the stack in Example 1 and Comparative Examples 1-3 are shown.

[0047] Fig. 9 The changes in moisture content in Example 1 and Comparative Examples 1 to 3 are shown.

[0048] Fig.10 The changes in pH in Example 1 and Comparative Examples 1-3 are shown.

[0049] Fig.11 The changes of the electrical conductivity EC in Example 1 and Comparative Examples 1-3 are shown.

[0050] Fig.12 The changes of ammonium nitrogen in Example 1 and Comparative Examples 1-3 are shown.

[0051] Fig.13 The changes of nitrate nitrogen in Example 1 and Comparative Examples 1-3 are shown.

[0052] Fig.14 The changes of nitrite nitrogen in Example 1 and Comparative Examples 1-3 are shown.

[0053] Fig.15 The emission of ammonia in Example 1 and Comparative Examples 1 to 3.

[0054] Fig.16 The changes of total potassium in Example 1 and Comparative Examples 1-3 are shown.

[0055] Fig.17 The changes of total phosphorus in Example 1 and Comparative Examples 1-3 are shown.

[0056] Fig.18 The changes of total nitrogen in Example 1 and Comparative Examples 1-3 are shown.

[0057] Fig.19 The changes in organic matter content in Example 1 and Comparative Examples 1 to 3 are shown.

[0058] Fig. 20 The changes of sulfate ions in Example 1 and Comparative Examples 1-3 are shown.

[0059] Fig.21 The changes of humus in Example 1 and Comparative Examples 1-3 are shown.

[0060] Fig. 22 The figure shows the changes of seed germination index in Example 1 and Comparative Examples 1 to 3. DETAILED DESCRIPTION

[0061] The content of the present invention is further described in detail below through specific examples. It should also be understood that the following examples are only used to further illustrate the present invention and cannot be construed as limiting the scope of protection of the present invention. Some non-essential improvements and adjustments made by those skilled in the art based on the principles set forth in the present invention all belong to the scope of protection of the present invention. The specific process parameters and the like in the following examples are also only examples within a suitable range, that is, those skilled in the art can make a selection within a suitable range through the description herein, and are not limited to the specific data exemplified below. The raw materials, reagents or devices used in the following examples and comparative examples, unless otherwise specified, can all be obtained from conventional commercial sources, or can be obtained by existing known methods.

[0062] Example 1

[0063] A method for preparing organic fertilizer by coupling persulfate with a molecular membrane (film coating + potassium persulfate, MCAC + K2S2O8), comprising the following steps:

[0064] Mix fresh chicken manure / pig manure (main material, raw material particle size not exceeding 5cm, carbon-nitrogen ratio of about 14:1, moisture content of about 75wt%) and mushroom residue (auxiliary material, particle size not exceeding 5cm, carbon-nitrogen ratio of about 29:1, moisture content of about 20wt%) in proportion, fix the amount of manure, and adjust the amount of auxiliary material mushroom residue to make the final C / N ratio of 25:1 and moisture content of 55wt%. After mixing evenly, add potassium persulfate powder at a ratio of 0.5wt% (dry weight), turn the pile and mix evenly, and pile it above the aeration pipe to form a pile with a height-to-width ratio of (3:5-3:4). Cover with molecular film to confirm that the edge of the pile is covered and sealed completely. Start composting with mechanical aeration, open it once every 4 hours for 20 minutes each time, so that the pile is fully aerobic. The temperature of the pile needs to be monitored every day during the composting process. The heating period is 2 days, and the high temperature period (the pile temperature exceeds 60°C) is 12 days. When the temperature drops to 40°C, the moisture is reduced to 30% and the seed germination index reaches at least 70%, the molecular membrane coupled persulfate oxidant aerobic composting is completed. No turning is required during the process and no additional bacterial agent needs to be added.

[0065] The molecular membrane in this example is a general polytetrafluoroethylene membrane molecular membrane, and its specific performance parameters are as follows:

[0066] Table 1 Molecular film performance parameters of Example 1

[0067]

[0068] The aeration pipe in this example is connected to an external blower, which is achieved by fixed or movable pipe layout. The aeration volume of the aeration hole is set according to the size of the pile, and the aeration volume per kilogram of material is 0.20-0.30L / min.

[0069] Comparative Example 1

[0070] A method for preparing organic fertilizer, which differs from Example 1 in that this example does not cover the molecular film and does not add potassium persulfate, and this method is recorded as non-film-covered (AC); other raw materials and preparation methods are the same as those in Example 1.

[0071] Comparative Example 2

[0072] A method for preparing organic fertilizer, which differs from Example 1 in that potassium persulfate is not added and a molecular film is covered in this example, and this method is recorded as film covering (MCAC); other raw materials and preparation methods are the same as in Example 1.

[0073] Comparative Example 3

[0074] A method for preparing organic fertilizer, which differs from Example 1 in that this example does not cover the molecular film and adds potassium persulfate. The method is recorded as no film covering + potassium persulfate (AC+K2S2O8). Other raw materials and preparation methods are the same as those in Example 1.

[0075] Performance Testing

[0076] 1. Greenhouse gas emission reduction effect: The emissions of three greenhouse gases, carbon dioxide, methane and nitrous oxide, in Example 1 and Comparative Examples 1 to 3 were tested. The results are as follows: Figures 1 to 3 As shown, Figure 1 The emission of carbon dioxide gas in Example 1 and Comparative Examples 1 to 3 is shown in FIG. Figure 2 The emission of methane gas in Example 1 and Comparative Examples 1 to 3 is shown in FIG. Figure 3 The emission of nitrous oxide gas in Example 1 and Comparative Examples 1-3.

[0077] from Figures 1 to 3 It can be seen that covering the molecular membrane alone has different degrees of effect on the reduction of carbon dioxide, methane and nitrous oxide emissions. The application of potassium persulfate alone has a slight effect on the reduction of carbon dioxide and nitrous oxide emissions, but when the molecular membrane is coupled with the potassium persulfate oxidant process, a significant reduction in carbon dioxide and nitrous oxide emissions can be achieved.

[0078] Furthermore, the global warming potential (carbon dioxide emission factor) of carbon dioxide, methane and nitrous oxide produced per kilogram of organic fertilizer (dry material) under different treatment methods in Example 1 and Comparative Examples 1 to 3 was calculated, and the results are shown in Table 2.

[0079] Table 2 Global warming potential calculation results under different treatment methods of Example 1 and Comparative Examples 1 to 3

[0080]

[0081] According to the results in Table 2, covering with molecular film alone can reduce the global warming potential (including CO2) per kilogram of organic fertilizer by 39.4%, applying potassium persulfate alone can reduce it by 21.3%, and molecular film coupled with potassium persulfate oxidant can effectively reduce the global warming potential by 49.5%.

[0082] 2. Odor reduction effect: The emission of four odors, dimethyl disulfide, methyl mercaptan, methyl sulfide and hydrogen sulfide, in Example 1 and Comparative Examples 1 to 3 were tested. The results are as follows: Figures 4 to 7 As shown, Figure 4 The emission of dimethyl disulfide gas in Example 1 and Comparative Examples 1 to 3 is shown in FIG. Figure 5 The emission of methyl mercaptan gas in Example 1 and Comparative Examples 1 to 3 is shown in FIG. Figure 6 The emission of methyl sulfide gas in Example 1 and Comparative Examples 1 to 3 is shown in FIG. Figure 7 The emission of hydrogen sulfide gas in Example 1 and Comparative Examples 1 to 3.

[0083] from Figures 4 to 7It can be seen that in terms of the effect of reducing sulfur-based odor emissions, compared with covering the molecular membrane alone and applying potassium persulfate alone, the molecular membrane coupled with potassium persulfate oxidant significantly reduced the emissions of methyl mercaptan and hydrogen sulfide.

[0084] 3. Composting technical indicators reaching the standard:

[0085] 1) The changes in the temperature, moisture content, pH and conductivity EC of the pile in Example 1 and Comparative Examples 1 to 3 were tested. The results are as follows: Figures 8 to 11 As shown, Figure 8 The temperature changes of the stack in Example 1 and Comparative Examples 1 to 3 are shown in FIG. Fig. 9 The changes in moisture content in Example 1 and Comparative Examples 1 to 3 are shown in FIG. Fig.10 The pH values ​​in Example 1 and Comparative Examples 1 to 3 are shown in Table 1. Fig.11 The changes of the electrical conductivity EC in Example 1 and Comparative Examples 1-3 are shown.

[0086] 2) The changes of ammonium nitrogen, nitrate nitrogen and nitrite nitrogen and the emission of ammonia in Example 1 and Comparative Examples 1 to 3 were tested. The results are as follows: Figures 12 to 15 As shown, Fig.12 The changes of ammonium nitrogen in Example 1 and Comparative Examples 1 to 3 are shown in FIG. Fig.13 The changes of nitrate nitrogen in Example 1 and Comparative Examples 1 to 3 are as follows: Fig.14 The changes of nitrite nitrogen in Example 1 and Comparative Examples 1 to 3 are shown in FIG. Fig.15 The emission of ammonia in Example 1 and Comparative Examples 1 to 3.

[0087] 3) The changes in total potassium, total phosphorus, total nitrogen, organic matter content, sulfate ion and humus in Example 1 and Comparative Examples 1 to 3 were tested. The results are as follows: Figures 16 to 21 As shown, Fig.16 The changes of total potassium in Example 1 and Comparative Examples 1 to 3 are as follows: Fig.17 The changes of total phosphorus in Example 1 and Comparative Examples 1 to 3 are as follows: Fig.18 The changes of total nitrogen in Example 1 and Comparative Examples 1 to 3 are as follows: Fig.19 The changes in organic matter content in Example 1 and Comparative Examples 1 to 3 are shown in FIG. Fig. 20 The changes of sulfate ions in Example 1 and Comparative Examples 1 to 3 are shown in FIG. Fig.21 The changes of humus in Example 1 and Comparative Examples 1-3 are shown.

[0088] 4) The changes in the seed germination index (GI) in Example 1 and Comparative Examples 1 to 3 were tested. The results are as follows: Fig. 22 As shown, Fig. 22 The figure shows the changes of seed germination index in Example 1 and Comparative Examples 1 to 3.

[0089] from Figures 8 to 11 It can be seen that the molecular membrane coupled with potassium persulfate oxidant treatment can significantly extend the high temperature period by 1 to 2 days compared with no film coating, and effectively reduce the pH of the compost. Figures 12 to 22 It can be seen that molecular membrane coupled potassium persulfate oxidant treatment can effectively improve the composting nitrification process, so that nitrate nitrogen and nitrite nitrogen are maintained at a high level at the end; at the same time, it effectively maintains the aerobic composting technical indicators to mature transformation. At the end of composting, the seed germination index of the organic fertilizer obtained by the molecular membrane coupled potassium persulfate oxidant treatment process can reach 100%, the mass fraction of organic matter is 42% (≥30%, NY525-2021 standard), the mass fraction of total nutrients (N+P2O5+K2O) can reach 4.237% (≥4.0, NY525-2021 standard), the mass fraction of water (fresh sample) can be reduced to less than 30%, and the pH is controlled at about 7.6, which can fully meet the agricultural industry standards of the People's Republic of China (NY525-2021).

[0090] The present invention mainly utilizes the strong oxidizing property of persulfate and the nitrogen-sulfur interaction mechanism in aerobic composting, thereby regulating and reducing the production of greenhouse gases such as methane, nitrous oxide, carbon dioxide, and odors such as methyl mercaptan and hydrogen sulfide. The dual reduction of greenhouse gases and odors in aerobic composting piles is mainly a process of electron transfer balance. The decomposition of compost organic matter releases electrons. When there is sufficient oxygen, oxygen can serve as an electron acceptor; when the oxygen is consumed, nitrates, sulfates, etc. in the pile will replace oxygen as electron acceptors, thereby producing nitrous oxide and hydrogen sulfide odors. The present invention first uses a molecular membrane to form a slightly positive pressure oxygen penetration layer on the surface to increase the oxygen-rich area on the surface. At the same time, by adding high positive valence persulfate, the target electron acceptor in the pile is increased, thereby reducing the formation of nitrous oxide and hydrogen sulfide and reducing the loss of nitrate in the pile.

[0091] The present invention utilizes a molecular membrane coupled persulfate method to perform aerobic composting. Compared with a method without covering the molecular membrane, the high temperature period can be significantly prolonged by 1 to 2 days, the pH of the compost can be effectively reduced, and the compost nitrification process can be effectively improved, so that nitrate nitrogen and nitrite nitrogen are maintained at a high level at the end; at the same time, the aerobic composting technical indicators are effectively maintained to be transformed to maturity.

[0092] The present invention effectively reduces the emission of greenhouse gases and odors while ensuring that the aerobic composting conversion rate is not reduced. In addition, the present invention can reach the high temperature period within 3 days by optimizing specific preparation parameters without adding fermentation agents. The organic fertilizer prepared by the method of the present invention has good composting efficiency, humification degree, high nutrient content, and can meet the agricultural industry standard of the People's Republic of China (NY525-2021).

[0093] In summary, the present invention forms a micro-positive pressure by blocking part of the gas from escaping through the molecular membrane micropores, thereby improving the oxygen penetration rate, coupling the persulfate oxidant, and maximally reducing the anaerobic plates in the pile, thereby promoting the decomposition and conversion activities of aerobic microorganisms and weakening the gas production of anaerobic microorganisms. Without reducing the aerobic composting temperature, composting efficiency, and humification process, the greenhouse gases and odors generated in the aerobic composting process are effectively reduced, thereby achieving good organic waste treatment and greenhouse gas emission reduction effects.

Claims

1. A method for preparing organic fertilizer by coupling persulfate with a molecular membrane, characterized in that: The method comprises the following steps: mixing organic waste with persulfate to form a pile, an aeration device is arranged below the pile, a molecular membrane is arranged above the pile, the aeration device and the molecular membrane form a closed environment, the aeration device is started for aeration, and the organic fertilizer is obtained after aerobic composting; the content of the persulfate in the pile is 0.1-1wt%; the carbon-nitrogen ratio of the pile is (18-28):1; the aeration is intermittent aeration, the aeration frequency is once every 2-6 hours; the aeration time of each aeration is 10-30 minutes; during aeration, the aeration amount per kilogram of the pile is 0.1-0.5L / min; The persulfate is selected from potassium persulfate; The organic waste includes livestock and poultry manure and agricultural and forestry waste; the livestock and poultry manure is selected from fresh chicken manure / pig manure; the agricultural and forestry waste is selected from mushroom residue; The molecular membrane is selected from a general polytetrafluoroethylene membrane molecular membrane; The compost body is not turned during the aerobic composting process; No bacterial agent is added during the aerobic composting process.

2. The method according to claim 1, characterized in that: The moisture content of the pile is 45-65wt%.

3. The method according to claim 1, characterized in that The carbon-nitrogen ratio of the livestock and poultry manure is (10-20):1; And / or, the moisture content of the livestock and poultry manure is 60-95wt%; And / or, the carbon-nitrogen ratio of the agricultural and forestry waste is (25-35):1; And / or, the moisture content of the agricultural and forestry waste is 20-30wt%.

4. The method according to claim 1, characterized in that: The aerobic composting time is 15 to 40 days.

5. The organic fertilizer prepared by the method described in any one of claims 1 to 4.

6. Use of the method according to any one of claims 1 to 4 in organic waste treatment and greenhouse gas emission reduction.

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