Production process for producing and brewing organic fertilizer by using kitchen waste and green plants

Abstract

The invention relates to the technical field of organic fertilizer production, and discloses a production process for producing and brewing an organic fertilizer by using kitchen waste and green plants, which comprises the following steps: S1, primary crushing and cooking: respectively crushing green plant raw materials and kitchen waste, and cooking and softening by using a biogas steaming furnace; s2, secondary crushing and fermentation: finely crushing the materials, inoculating probiotics and fermenting, and keeping stable fermentation conditions; s3, third-time exposure: exposing the materials in a natural sunning ground to reduce moisture and improve stability; s4, crushing for the third time and cooking for the second time: performing crushing for the third time, and then cooking the materials through a solar kettle to ensure curing; and S5, formula adjustment and packaging: adjusting the contents of nitrogen, phosphorus and potassium according to the mixing ratio, and finally performing automatic packaging to complete production. Through the three-crushing, three-steaming and three-drying processes, the complex process in production is simplified, repeated turning and chemical treatment are not needed, the production speed is increased, and the method is suitable for various large-scale production and has considerable applicability.

Description

Technical Field

[0001] The invention relates to the technical field of organic fertilizer production, and specifically to a production process for brewing organic fertilizer by utilizing kitchen waste and green plants. Background Art

[0002] With the increasing severity of global environmental problems and people's concern about food safety, the concepts of organic agriculture and sustainable development have gradually gained popularity. As a key input for green agriculture, the production process and quality of organic fertilizers are directly related to the safety and environmental protection of agricultural production. In traditional agriculture, the use of organic fertilizers can effectively improve soil structure, enhance the soil's ability to retain water and fertilizer, reduce the use of chemical fertilizers, and reduce the impact of agricultural production on the environment. Therefore, the production and application of organic fertilizers have become increasingly important in modern agriculture. However, the production process of organic fertilizers on the market still faces many challenges.

[0003] First, raw materials such as livestock and poultry manure and crop waste contain a lot of impurities, and the fermentation process relies on multiple turning and chemical additions, resulting in a long production cycle, uneven nutrient release, and often produces odor and waste gas during the fermentation process, affecting the production environment. Secondly, the nutrients in the traditional fermentation process fluctuate greatly, and the uniformity of fermentation is difficult to control, especially the frequent addition of fermentation agents and the adjustment of temperature and humidity. In addition, the fermentation and drying processes rely heavily on fossil fuels such as electricity and natural gas, resulting in high energy consumption in production. Energy consumption has become a key factor limiting process efficiency and environmental performance. At the same time, due to uneven fermentation, fertilizers often contain high salt content and require desalination treatment to meet the standards. This additional step increases the complexity of the production process. What is more serious is that harmful gases such as hydrogen sulfide and ammonia are produced during fermentation. The traditional process requires the installation of hydrogen sulfide removal equipment to treat waste gas, which not only increases equipment costs, but also imposes a certain burden on the environment. The above problems limit the efficiency, environmental performance and market adaptability of the traditional organic fertilizer production process, and urgently need to be solved through technological innovation. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a production process for brewing organic fertilizer using kitchen waste and green plants, which solves the problem that the traditional production process is slow in production and cannot be adapted to production lines of all sizes.

[0005] To achieve the above purpose, the present invention is implemented by the following technical scheme: a process for producing organic fertilizer by using kitchen waste and green plants, comprising the following steps:

[0006] S1. Primary crushing and cooking: The green plant materials are crushed for the first time by a low-speed high-torque crusher to meet the initial crushing requirements, and then the crushed green plant materials and the classified kitchen waste are respectively cooked and softened by a biogas steamer;

[0007] S2, secondary crushing and fermentation: The green plant materials and kitchen waste after the first cooking are crushed for the second time through a fine grinder to refine the particles to a broken wall state; the refined materials are then sent to the fermentation tank respectively, and probiotics are inoculated through the mother tank technology to start the fermentation, and probiotics are supplemented through the dot dyeing process to maintain stable fermentation conditions;

[0008] S3, three-time sun exposure: expose the fermented green plant materials and the biogas residue formed by kitchen waste to the sun, and use a natural sun drying field to promote water evaporation to ensure that the water content is further reduced and the stability of the material is enhanced. The sun drying time is 3h to 6h;

[0009] S4, three crushing and two cooking: the green plant materials and kitchen waste materials after exposure to the sun are crushed for the third time through the final crusher to make the particles finer; then the crushed materials are steamed for the second time through the solar kettle, the cooking temperature is 90℃~120℃, and the humidity is kept moderate to ensure the maturation of the materials and facilitate the subsequent fertilizer absorption;

[0010] S5. Formula adjustment and pre-shipment processing: The matured green plant materials and kitchen waste materials are finally mixed through formula technology, and the nitrogen, phosphorus and potassium content is adjusted to meet the fertilizer requirements; ensure that the finished organic fertilizer has a rich nitrogen, phosphorus and potassium content, the organic matter content is not less than 90%, and the harmful elements and salt content meet the national standards; finally, fill and package through automated equipment to complete the final production of the fertilizer.

[0011] Preferably, in step S1, the rotation speed of the low-speed high-torque pulverizer is 50 r / min to 150 r / min, the torque range is 500 Nm to 2000 Nm, the cooking temperature of the biogas steamer is 80° C. to 100° C., and the cooking time is 30 min to 60 min.

[0012] Preferably, the fermentation tank in step S2 adopts a semi-closed structure.

[0013] Preferably, in the step S2, the operating speed of the fine grinder is 200 rpm to 500 rpm, and the particle size of the material particles is ≤5 mm.

[0014] Preferably, in step S3, the natural sun drying field can be used for industrialized scenic area exhibition.

[0015] Preferably, in the step S4, the rotation speed of the final crusher is 300 rpm to 600 rpm, and the particle size is controlled to be ≤ 2 mm.

[0016] Preferably, in step S4, the heating efficiency of the solar kettle is 2 ~50m 2 The temperature range is 60℃~120℃, the heating time is 3h~6h, and the heat collection efficiency is 0.8kW / m2 ~1.5kW / m 2 .

[0017] Preferably, in step S5, the nitrogen, phosphorus and potassium contents are in the range of 2% to 5% for nitrogen, 1% to 3% for phosphorus and 2% to 5% for potassium.

[0018] Preferably, in the step S5, the harmful elements and salt content are measured by an X-ray fluorescence spectrometer and a conductivity analyzer to determine whether they meet the standards.

[0019] Preferably, the solar kettle includes two operating modes:

[0020] a. Large-scale production: During production, the pipeline for transporting fertilizer passes through the equipment;

[0021] b. In small-scale production, the fertilizer is directly poured into the kettle for cooking.

[0022] The present invention provides a production process for producing organic fertilizer by using kitchen waste and green plants. It has the following beneficial effects:

[0023] 1. The present invention simplifies the complex process flow in traditional organic fertilizer production through the design of three-crushing, three-steaming and three-drying process, and does not require multiple composting and chemical treatment, making the production process more simple and efficient. This process is not only suitable for large-scale industrial production lines, but also can be effectively applied to small and medium-scale production environments, ensuring that production lines of different scales can produce high-quality organic fertilizer products, reflecting the applicability and flexibility of the process.

[0024] 2. The present invention uses a solar kettle to concentrate sunlight to heat the water at the bottom of the kettle, and uses steam to cook and dry the water, thereby making full use of solar energy, a renewable energy source. This method reduces dependence on electricity or other fossil fuels, and realizes a low-energy, high-efficiency production process. At the same time, the natural heating and drying process of solar energy is utilized to avoid additional energy consumption, greatly reducing production costs.

[0025] 3. The present invention avoids the use of polluting raw materials by selecting green plant raw materials and kitchen waste as the main raw materials, and combines the three-steaming and three-drying process and the sealing and dotting technology to achieve clean production with no odor and no wastewater or waste gas emissions. The entire production process does not require complicated wastewater and waste gas treatment equipment, truly achieving zero emissions, protecting the environment, and meeting the requirements of modern green environmental protection.

[0026] 4. The present invention promotes the further decomposition of organic matter and the release of nutrients through multiple high-temperature cooking and exposure to the sun, effectively improving the organic matter content and nutrient uniformity in the fertilizer. In addition, the combination of sealing and dotting processes ensures the efficient inoculation and activity of probiotics. The produced organic fertilizer has stable quality and rich nutrients, which helps to improve soil structure and fertility. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a process flow chart of the present invention.

[0028] Figure 2 It is a process production flow chart of the present invention. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings of the present invention specification to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See attached Figure 1 -Attached Figure 2 , Example 1: Flexible energy-saving process for small-scale organic fertilizer production

[0031] Step Description:

[0032] S1. Primary crushing and cooking: Use a low-speed high-torque crusher to process the green plant raw materials, and use a small biogas steamer to cook the crushed green plant raw materials and kitchen waste for the first time to soften the materials. The cooking temperature is 80℃~100℃;

[0033] S2. Secondary crushing and fermentation: Use a fine pulverizer for the second crushing to refine the two types of materials to a particle size of ≤5mm, then send the refined materials into a small fermentation tank, inoculate probiotics through the mother tank technology, and start fermentation;

[0034] S3, three-time exposure: Exposure in an open natural drying field for 3h to 6h to promote water evaporation, using manually controlled reflectors to assist the drying process;

[0035] S4, three crushing and two cooking: the material is crushed for the third time by the final crusher, the particle size is ≤2mm, and the second cooking is carried out in a small solar kettle, and the cooking temperature is 90℃~110℃;

[0036] S5. Formula adjustment and pre-shipment processing: Manually adjust the formula to ensure that the nitrogen, phosphorus and potassium content of the finished fertilizer meets the standards, and the automated packaging equipment completes the filling and packaging.

[0037] Summarize:

[0038] This embodiment is suitable for small-scale production, uses small equipment to quickly put into production, has the characteristics of flexibility, energy saving and environmental protection, and is suitable for small farms or individual agricultural production.

[0039] Example 2: Medium-sized automated organic fertilizer production process

[0040] Step Description:

[0041] S1. Primary crushing and cooking: Use a medium-sized low-speed high-torque crusher to crush the green plant raw materials, and use a biogas steamer for the first cooking, with the temperature controlled at 80℃~100℃ and the cooking time 30min~60min;

[0042] S2. Secondary crushing and fermentation: The fine pulverizer is used for secondary crushing, the particle size of the material is controlled at ≤5mm, and the probiotics are inoculated and fermented using automated equipment. The fermentation tank is a semi-closed structure;

[0043] S3, three-time exposure: three-time exposure in a medium-sized natural drying field, with the exposure time controlled to 3h~6h through solar energy and reflection devices to ensure water evaporation;

[0044] S4, three crushing and two cooking: the final crusher is used for the third crushing, the particle size is controlled at ≤ 2mm, and the medium-sized solar kettle is used for the second cooking at a temperature of 90℃~120℃;

[0045] S5. Formula adjustment and pre-shipment processing: The automated formula adjustment and filling system adjusts the nitrogen, phosphorus and potassium content to ensure compliance with fertilizer standards, and the automatic packaging machine completes product packaging.

[0046] Summarize:

[0047] This embodiment is suitable for medium-sized factories, has a high degree of automation, an efficient production process, saves labor and energy, and is suitable for medium-sized production needs.

[0048] Example 3: Large-scale high-yield environmentally friendly organic fertilizer production process

[0049] Step Description:

[0050] S1. Primary crushing and cooking: Use a large industrial pulverizer to crush the raw materials, use an industrial biogas steamer for the first cooking to soften the materials, and control the cooking temperature at 90℃~100℃;

[0051] S2, secondary crushing and fermentation: The fine crusher crushes the material to ≤5mm, and the probiotics are inoculated through fully automated equipment. The fermentation tank is fully enclosed and the fermentation conditions are controllable;

[0052] S3, three-time exposure: three-time exposure in a large solar exposure field, using solar energy and reflective devices to efficiently evaporate water, and the exposure time is controlled within 3h~6h;

[0053] S4, three crushing and two cooking: the final crusher is used for the third crushing, the particle size is controlled at ≤ 2mm, and a large solar kettle is used for the second cooking, and the cooking temperature is 90℃~120℃;

[0054] S5. Formula adjustment and pre-shipment processing: Use a fully automatic formula system to accurately adjust nitrogen, phosphorus and potassium to ensure that the organic matter content is not less than 90%. Use an X-ray fluorescence spectrometer to detect harmful elements and a conductivity analyzer to detect salt content. Finally, use fully automatic filling and packaging equipment to complete the packaging of the finished product.

[0055] Summarize:

[0056] This embodiment is suitable for large-scale organic fertilizer factories, has high production efficiency, is environmentally friendly, uses advanced testing equipment to ensure product quality, and is suitable for mass production and market supply.

[0057] Example 4: Process for combining ecological tourism with organic fertilizer production

[0058] Step Description:

[0059] S1. Primary crushing and cooking: Use a small low-speed high-torque crusher to crush the green plant materials, mix the crushed materials with kitchen waste, and use a small biogas steamer for cooking;

[0060] S2, secondary crushing and fermentation: Use a small fine crusher for secondary crushing. Visitors can participate in the inoculation and fermentation process of probiotics. The open fermentation tank is used for display;

[0061] S3, triple exposure: materials are exposed to the sun in traditional natural drying yards. Visitors can participate in the manual drying process and experience agricultural production;

[0062] S4, Third Crushing and Secondary Cooking: Visitors can watch the third crushing and the operation of the solar cauldron to understand the production process of traditional agriculture;

[0063] S5. Formula adjustment and pre-shipment processing: Manually adjust the formula and carry out small batch packaging. Visitors can participate in the experience and understand the production process of organic fertilizer.

[0064] Summarize:

[0065] This embodiment combines agricultural sightseeing with organic fertilizer production, enhances the educational and sightseeing value through open operation and interactive experience, and is suitable for ecotourism and agricultural display.

[0066] Example 5: Zero-emission energy-saving organic fertilizer production process

[0067] Step Description:

[0068] S1. Primary crushing and cooking: Use energy-saving crushers to crush green plant materials, and use biogas steamers without exhaust gas emissions for the first cooking;

[0069] S2. Secondary crushing and fermentation: Use a fine grinder for the second crushing, and the fermentation tank is a fully enclosed structure to ensure that there is no waste gas emission during the fermentation process, and the probiotics are automatically inoculated;

[0070] S3, three-time exposure: exposure through solar drying field, using solar energy and reflection device, the whole process has no exhaust gas emission;

[0071] S4, three crushing and two cooking: the third crushing is carried out by the final crusher, and the solar kettle is used for cooking, without additional energy consumption;

[0072] S5. Formula adjustment and pre-shipment processing: The automated formula adjustment system ensures that the nitrogen, phosphorus and potassium contents are qualified, and environmentally friendly packaging materials are used for packaging. There is no wastewater or exhaust gas emission during the entire process.

[0073] Summarize:

[0074] This embodiment emphasizes zero emission and energy saving, and is a completely environmentally friendly organic fertilizer production process that meets modern environmental protection and sustainable development requirements and is suitable for high-standard green production needs.

[0075] Summary: These five examples demonstrate the flexible application of the production process of organic fertilizer brewing using kitchen waste and green plants under different scales and needs, covering a variety of scenarios from small-scale to large-scale production, agricultural tourism, zero-emission energy saving, etc. Each example emphasizes environmental protection, resource conservation and production efficiency, and provides a variety of sustainable development paths for modern organic fertilizer production.

[0076] Test experiment 1: Fertilizer brewing efficiency test based on the brewing process of soy sauce, vinegar and wine

[0077] Purpose

[0078] The experiment aims to test the present invention by drawing on the soy sauce, vinegar and wine brewing process, optimizing the organic fertilizer fermentation process, improving the fermentation efficiency, ensuring the nutrient stability, and avoiding the complex process of multiple compost turning and chemical treatment required in the traditional process.

[0079] Experimental protocol:

[0080] The control group of the prior art: using the traditional organic fertilizer fermentation process, which requires multiple compost turning and supplementation of fermentation agents;

[0081] The process group of the invention uses the long-term closed fermentation in the process of brewing sauce, vinegar and wine, combines three times of crushing, three times of steaming and probiotics sealed fermentation, and avoids turning the pile and chemical addition.

[0082] Experimental process:

[0083] The same green plant material and kitchen waste material (1000 kg) were processed by the traditional process and the process of the present invention respectively;

[0084] Test fermentation time and nutrient stability, especially the changes in nitrogen, phosphorus and potassium content and the decomposition rate of organic matter during fermentation;

[0085] Measure the stability of nitrogen, phosphorus and potassium in the finished fertilizer after fermentation and evaluate the impact of different processes on the nutrient release of fertilizer.

[0086] Test data table

[0087]

[0088] Summary: The process of the present invention shortens the fermentation time by 50% by drawing on the fermentation technology of sauce, vinegar and wine. At the same time, the fluctuation range of nitrogen, phosphorus and potassium in the process of the present invention is small, indicating that the fermentation process is more stable and the nutrient release is more uniform. Finally, the invention avoids turning the pile through closed fermentation and improves production efficiency.

[0089] Test experiment 2: Nitrogen, phosphorus and potassium (NPK) content and organic matter content test

[0090] Testing process:

[0091] The organic fertilizer samples finally produced were collected from each embodiment and the contents of nitrogen, phosphorus and potassium (NPK) were measured respectively.

[0092] Use a chemical analyzer to measure the organic matter content.

[0093] Test data:

[0094]

[0095] Result analysis: Example 3 (large-scale process) and Example 2 (medium-scale process) showed higher nitrogen, phosphorus, potassium and organic matter contents, which are suitable for the demand of the fertilizer market. Example 4 (ecological sightseeing process) had a slightly lower organic matter content, which is suitable for sightseeing display, but not suitable for large-scale market supply.

[0096] Test experiment three: energy consumption test

[0097] Testing process:

[0098] An energy consumption recorder was used to measure the energy consumption (kWh) of the five embodiments in each production stage (crushing, cooking, sun exposure, packaging, etc.).

[0099] The total energy consumption was recorded for each example.

[0100] Test data:

[0101] Example Total energy consumption (kWh) Embodiment 1 150 Embodiment 2 120 Embodiment 3 100 Embodiment 4 170 Embodiment 5 80

[0102] Result analysis:

[0103] Embodiment 5 (zero-emission energy-saving process) shows the lowest energy consumption and significant energy-saving effect. Embodiment 3 (large-scale process) also has low energy consumption and shows excellent energy efficiency. Embodiment 4 has high energy consumption due to manual operation and sightseeing design.

[0104] Test experiment 4: Deodorization effect test of probiotics combined with sealing technology

[0105] Purpose:

[0106] The experiment was designed to test how the probiotic inoculation and sealing technology of the present invention can achieve deodorization during the fermentation process without the need to use hydrogen sulfide removal equipment to control odor emissions.

[0107] Experimental protocol:

[0108] Prior art control group: In the traditional organic fertilizer process, hydrogen sulfide removal equipment is needed to reduce the emission of harmful gases such as hydrogen sulfide;

[0109] The process group of the present invention uses sealed fermentation and probiotic inoculation to control odor in a closed environment without the need for hydrogen sulfide removal equipment.

[0110] Experimental process:

[0111] Prepare the same kitchen waste and green plant materials, and process them by the traditional process and the process of the present invention respectively;

[0112] Use gas detectors to monitor the concentration of odor pollutants such as hydrogen sulfide (H2S) and ammonia (NH3), especially at different stages of fermentation;

[0113] Record the process control of odor during fermentation and evaluate the residual odor of the finished fertilizer.

[0114] Test data table:

[0115]

[0116] Summary: The concentrations of hydrogen sulfide and ammonia in the process of the present invention are much lower than those in the traditional process, indicating that the probiotic sealed fermentation technology can effectively reduce odor pollution, and does not require desulfurization equipment, simplifies equipment configuration, saves costs, and the odor in the finished fertilizer is almost unnoticeable, which is suitable for a wider market application.

[0117] Test experiment 5: Fertilizer quality test using formulation technology to avoid desalination

[0118] Purpose:

[0119] The experiment aims to evaluate the formula adjustment technology of the present invention, and avoid the desalination process in traditional organic fertilizer production through reasonable adjustment of nitrogen, phosphorus, potassium and organic matter content, so as to ensure fertilizer quality and reduce salt content.

[0120] Experimental protocol:

[0121] Prior art control group: The traditional organic fertilizer production process requires desalination to reduce the salt content of the finished fertilizer.

[0122] The process group of the present invention directly controls the ratio of nitrogen, phosphorus, potassium and organic matter through formula adjustment, thereby avoiding desalination treatment.

[0123] Experimental process:

[0124] The same kitchen waste and green plants are selected and processed by the traditional process and the process of the present invention respectively;

[0125] Measure salt content, nitrogen, phosphorus, potassium and organic matter content in finished fertilizers and evaluate the effectiveness of salt control;

[0126] Record whether desalination is required during the production process and test the nutrient uniformity of the fertilizer.

[0127] Test data table:

[0128]

[0129] Summary: The salt content of the process of the present invention is significantly lower than that of the traditional process, and no additional desalination treatment is required. Through reasonable formula adjustment, the process of the present invention increases the nitrogen, phosphorus and potassium content in the fertilizer, and the organic matter content is also higher than that of the traditional process. Finally, the process of the present invention omits the desalination process, further simplifies the production process, and improves production efficiency.

[0130] Summary: The organic fertilizer production process of the present invention has greatly improved production efficiency, saved energy, and significantly improved fertilizer quality by drawing on the brewing technology of sauce, vinegar and wine, combining probiotic inoculation and sealed fermentation technology as well as reasonable formula adjustment. In terms of fermentation efficiency and nutrient stability, the fermentation time is shortened from 60 days to 30 days, and the nutrient release is more uniform, avoiding the complex steps of multiple composting and chemical treatment in the traditional process. Tests show that the nitrogen, phosphorus, potassium content and organic matter content are significantly improved under medium and large-scale processes, especially the organic matter content of large-scale processes reaches 95%, which is significantly higher than that of traditional processes. In terms of energy consumption, the process of the present invention greatly reduces energy consumption through zero-emission energy-saving design. It is particularly effective in using solar energy and biogas energy. In addition, probiotics and sealing technology can effectively reduce the emission of harmful gases such as hydrogen sulfide and ammonia, achieve odor-free emission, simplify equipment configuration, and improve environmental performance. Finally, the present invention avoids the cumbersome desalination steps in traditional processes through formula adjustment technology, significantly reduces the salt content in fertilizers, while maintaining a high level of nitrogen, phosphorus and potassium nutrients, simplifies the production process, and improves fertilizer quality and production efficiency. In general, the process of the present invention is superior to traditional processes in fermentation time, energy consumption, environmental protection deodorization and fertilizer quality, is suitable for organic fertilizer production of different scales, and has broad market application prospects and sustainable development potential.

[0131] Comparative experiment 1: Energy conservation and resource utilization efficiency comparison experiment

[0132] Purpose:

[0133] The efficiency of energy consumption and resource utilization (solar energy and biogas energy) between the prior art and the technology of the present invention are compared, especially the impact of the garbage sorting and processing steps.

[0134] Experimental protocol:

[0135] Existing technology: using traditional organic fertilizer production process, without using pre-sorting system, requiring additional garbage sorting process in the production line, using traditional energy (such as electricity and natural gas) as energy for cooking and heating;

[0136] The technology of the present invention: pre-intervention into the classification system eliminates the need for re-sorting, and fully utilizes biogas energy and solar energy as the main energy sources to reduce dependence on electricity and natural gas.

[0137] Experimental process:

[0138] S1. Prepare green plant raw materials and kitchen waste (1000 kg) of the same weight, and enter the production process of the prior art and the technology of the present invention respectively;

[0139] S2. Measure the energy consumption of each technology in the steps of waste sorting, crushing, cooking, fermentation, etc., with special attention to the use of solar energy and biogas;

[0140] S3. Record the sorting time, cooking time and energy efficiency of each technology, and calculate the total energy consumption.

[0141] Test data table:

[0142]

[0143]

[0144] Result analysis:

[0145] Energy saving: The technology of the present invention reduces the total energy consumption by 52% due to the full use of biogas and solar energy;

[0146] Sorting time: The technology of the present invention eliminates the need for garbage sorting, saving 120 minutes of processing time and reducing the need for 5 workers;

[0147] Resource utilization: The technology of the present invention greatly reduces the dependence on traditional energy (such as electricity and natural gas) through the efficient use of solar energy and biogas energy;

[0148] Cooking efficiency: Due to the use of solar kettle, the cooking time is shortened by 25%.

[0149] Comparative experiment 2: Comparative experiment on production process simplification and fertilizer homogenization

[0150] Purpose:

[0151] The complexity of the production process at different scales and the homogeneity of the fertilizer products are compared between the prior art and the technology of the present invention.

[0152] Experimental protocol:

[0153] Existing technology: In traditional organic fertilizer technology, the expansion of production scale often leads to the complexity of the process, and the improvement of automation requires additional equipment and labor costs. The composition of fertilizers at different scales is prone to differences;

[0154] The technology of the present invention: by simplifying the production process design, homogeneous fertilizers can be produced regardless of large, medium or small production scales, the only difference being the degree of automation.

[0155] Experimental process:

[0156] S1, respectively set small (200 tons / year), medium (1000 tons / year) and large (5000 tons / year) production scale, respectively apply existing technology and the technology of the present invention to produce organic fertilizer;

[0157] S2. Record the complexity of the production process at each scale (number of process steps, equipment usage, labor requirements, etc.), and collect fertilizer samples from each batch to measure the homogeneity of nitrogen, phosphorus, potassium and organic matter content;

[0158] S3. Analyze the degree of simplification of production processes at different scales and the consistency of fertilizer products.

[0159] Test data table:

[0160]

[0161]

[0162] Result analysis:

[0163] Process simplification: The technology of the present invention maintains the same process steps and equipment configuration at different scales, which significantly simplifies the production process. In particular, in large-scale production, the existing technology requires more equipment and labor, while the technology of the present invention requires less equipment and labor;

[0164] Homogeneity performance: The technology of the present invention can keep the composition of fertilizers consistent at different scales, and the differences in nitrogen, phosphorus, potassium and organic matter content are controlled within 2%. However, when the scale of the existing technology is expanded, the homogeneity performance of the fertilizer is poor, and the difference reaches more than 10%.

[0165] Comparative experiment 3: Zero emission and environmental protection performance comparison experiment

[0166] Purpose:

[0167] Compare the prior art with the technology of the present invention in terms of wastewater and waste gas emissions and eco-friendly performance, especially the cleanliness of raw material processing and whether pollutants are generated during the production process.

[0168] Experimental protocol:

[0169] Existing technology: Wastewater and waste gas are often produced during the traditional organic fertilizer production process, especially pollutants are easily generated during the treatment of kitchen waste.

[0170] The technology of the present invention ensures zero emission through clean raw material processing and fully enclosed fermentation, and the production process has no impact on the living environment, and is eco-friendly.

[0171] Experimental process:

[0172] S1. Prepare the same kitchen waste and green plant raw materials, and respectively enter the processes of the prior art and the technology of the present invention;

[0173] S2. Collect wastewater and waste gas emission data throughout the production process;

[0174] S3. Evaluate the cleanliness of the production environment and compare the harmful element content and salt content of the finished fertilizers.

[0175] Test data table:

[0176]

[0177] Result analysis:

[0178] Zero emission: The technology of the present invention realizes true zero emission, and there is no wastewater or waste gas emission in the entire production process, while the existing technology produces more pollutants;

[0179] Environmental performance: The raw material processing technology of the present invention is cleaner, the production environment is kept good, there is no odor problem during the fermentation process, and the quality of the living environment is significantly improved;

[0180] Fertilizer safety: The fertilizer produced by the technology of the present invention has greatly reduced harmful element content and significantly reduced salt content, further improving the safety of the fertilizer.

[0181] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A process for producing organic fertilizer using kitchen waste and green plants, characterized in that: The following steps are involved: S1. Primary crushing and cooking: The green plant materials are crushed for the first time by a low-speed high-torque crusher to meet the initial crushing requirements, and then the crushed green plant materials and the classified kitchen waste are respectively cooked and softened by a biogas steamer; S2, secondary crushing and fermentation: The green plant materials and kitchen waste after the first cooking are crushed for the second time through a fine grinder to refine the particles to a broken wall state; the refined materials are then sent to the fermentation tank respectively, and probiotics are inoculated through the mother tank technology to start the fermentation, and probiotics are supplemented through the dot dyeing process to maintain stable fermentation conditions; S3, three-time sun exposure: expose the fermented green plant materials and the biogas residue formed by kitchen waste to the sun, and use a natural sun drying field to promote water evaporation to ensure that the water content is further reduced and the stability of the material is enhanced. The sun drying time is 3h to 6h; S4, three crushing and two cooking: the green plant materials and kitchen waste materials after exposure to the sun are crushed for the third time through the final crusher to make the particles finer; then the crushed materials are steamed for the second time through the solar kettle, the cooking temperature is 90℃~120℃, and the humidity is kept moderate to ensure the maturation of the materials and facilitate the subsequent fertilizer absorption; S5. Formula adjustment and pre-shipment processing: The matured green plant materials and kitchen waste materials are finally mixed through formula technology, and the nitrogen, phosphorus and potassium content is adjusted to meet the fertilizer requirements; ensure that the nitrogen, phosphorus and potassium content in the finished organic fertilizer is rich, the organic matter content is not less than 90%, and the harmful elements and salt content meet the national standards; finally, fill and package through automated equipment to complete the final production of the fertilizer.

2. The process for producing organic fertilizer by using kitchen waste and green plants according to claim 1, characterized in that: In the step S1, the rotation speed of the low-speed high-torque pulverizer is 50r / min to 150r / min, the torque range is 500Nm to 2000Nm, the cooking temperature of the biogas steamer is 80°C to 100°C, and the cooking time is 30min to 60min.

3. The process for producing organic fertilizer by using kitchen waste and green plants according to claim 1, characterized in that: In the S2 step, the fermentation tank adopts a semi-closed structure.

4. The process for producing organic fertilizer by using kitchen waste and green plants according to claim 1, characterized in that: In the step S2, the fine pulverizer operates at a speed of 200 rpm to 500 rpm, and the particle size of the material particles is ≤5 mm.

5. The process for producing organic fertilizer by using kitchen waste and green plants according to claim 1, characterized in that: In the step S3, the natural sun drying area can be used for industrialized scenic area exhibition.

6. The process for producing organic fertilizer by using kitchen waste and green plants according to claim 1, characterized in that: In the step S4, the rotation speed of the final crusher is 300 rpm to 600 rpm, and the particle size is controlled to be ≤ 2 mm.

7. The process for producing organic fertilizer by using kitchen waste and green plants according to claim 1, characterized in that: In the step S4, the heating efficiency of the solar kettle is 10m2 to 50m2, the temperature range is 60℃ to 120℃, the heating time is 3h to 6h, and the heat collection efficiency is 0.8kW / m 2 ~1.5kW / m 2 .

8. The process for producing organic fertilizer by using kitchen waste and green plants according to claim 1, characterized in that: In the step S5, the nitrogen, phosphorus and potassium contents are in the range of 2% to 5% for nitrogen, 1% to 3% for phosphorus and 2% to 5% for potassium.

9. The process for producing organic fertilizer by using kitchen waste and green plants according to claim 1, characterized in that: In the step S5, the harmful elements and salt content are measured by an X-ray fluorescence spectrometer and a conductivity analyzer to see whether they meet the standards.

10. The process for producing organic fertilizer by using kitchen waste and green plants according to claim 1, characterized in that: The solar kettle includes two operating modes: a. Large-scale production: During production, the pipeline for transporting fertilizer passes through the equipment; b. In small-scale production, the fertilizer is directly poured into the kettle for cooking.

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