The process of making granular organic fertilizer from animal feces mainly includes the following steps‌:

1‌. Fermentation And Composting‌: Mix the collected animal feces with auxiliary materials such as straw and hay, control the moisture content at about 65%, pile it into long strips, sprinkle aerobic fermentation bacteria, and use a compost turner for fermentation. The fermentation time is generally about one week. When the temperature drops to room temperature, it indicates that the fermentation is complete‌.

‌Material crushing‌: The fermented materials are crushed to remove large impurities and ensure that the material particle size is uniform‌.

‌2. Mixing And Stirring‌: Add trace elements, humic acid and other nutrient elements to the crushed materials, use a mixer to fully mix them, and ensure that the ingredients are uniform‌.

‌3. Granulation‌: Send the mixed materials to the granulator for granulation. Common granulation equipment includes disc granulator, stirring tooth granulator and rotary drum stirring tooth granulator, etc.

4‌. Drying‌: The granulated materials need to be dried to remove excess moisture and improve the stability and storage of the fertilizer. The drying equipment generally uses a drum dryer‌.

‌5. Cooling‌: The temperature of the dried material is high and needs to be cooled to avoid deterioration during storage and transportation. The cooling equipment generally uses a drum cooler.

‌6. Screening‌: The cooled material needs to be screened to remove unqualified particles and impurities to ensure uniform particle size.

‌7. Packaging‌: The qualified particles after screening are quantitatively weighed and packaged by an automatic packaging machine to complete the final product production.

The reasons for using animal feces to make granular organic fertilizer mainly include the following aspects:

‌Convenient Spreading: Granular organic fertilizer has good fluidity and is easier to spread than powder fertilizer, which improves the efficiency and uniformity of fertilization.

‌Sterilization: During the granulation process, high temperature treatment can kill pests and diseases in the feces, such as Escherichia coli, to ensure the safety of the fertilizer.

‌Deodorization: High temperature treatment during the granulation process can also remove the stench of feces, so that the organic fertilizer no longer emits an unpleasant odor.

‌Adding Trace Elements: Trace elements such as nitrogen, phosphorus, and potassium can be added during the granulation process to improve the nutritional value and fertilizer efficiency of the fertilizer.

‌Soil Improvement: Through fermentation and the addition of probiotics, organic fertilizer can improve soil structure, promote the activity of soil microorganisms, and enhance the water retention and drought resistance of the soil.

‌Improving Fertilizer Efficiency: Granular organic fertilizer can better control the release of fertilizer efficiency by spraying a coating layer to meet the needs of crops.

‌Eco-Friendly‌: Animal feces organic fertilizer can supplement nutrients in the soil, improve soil biodiversity, help maintain soil ecological balance, and reduce the pollution of chemical fertilizers to soil and water sources. ‌Rich nutrients‌: Animal feces organic fertilizer contains rich main nutrients such as nitrogen, phosphorus, potassium and a variety of trace elements, which can significantly improve the yield and quality of crops.‌

The application of animal manure pellets mainly includes the following aspects‌:

‌Organic Fertilizer‌: Animal manure pellets can be made into high-quality organic fertilizers after fermentation. These fertilizers are rich in organic matter and a variety of nutrients, which can promote plant growth and improve crop yield and quality. For example, cow dung processed pellets are rich in organic matter and a variety of nutrients and can be used as high-quality organic fertilizers‌.

‌Feed‌: Animal manure pellets can be used as feed supplements, containing nutrients such as protein and vitamins. For example, cow dung processed pellets can be used as feed, which needs to be proportioned and processed according to the age and needs of the animal‌.

‌Biomass Energy‌: Animal manure pellets have a high calorific value and can be used as fuel. They are widely used in power generation and heating. For example, cow dung processed pellets are an ideal biomass energy source and are widely used in power generation and heating‌.

‌Soil Remediation And Water Treatment‌: Animal manure pellets can also be used for soil remediation and water treatment, improving soil structure and purifying water quality. For example, rabbit manure is rich in nitrogen, phosphorus, potassium and a variety of trace elements, which can improve soil aggregate structure and improve soil fertility‌.

1. Fermentation And Ripening

Add straw, branches, mushroom residue and other auxiliary materials to livestock and poultry manure in a ratio of 7:3, and adjust the carbon-nitrogen ratio and water content. Then sprinkle aerobic fermentation bacteria and let it ferment for about 25-45 days. During the fermentation process, the pile should be turned according to the temperature changes. It is recommended to use a compost turning machine to save labor costs and improve fermentation efficiency.

2. Material Crushing

After 25-45 days of fermentation, livestock manure becomes gray-brown and odorless. Large lumps, bones, pebbles, etc. in the material can be crushed using a vertical high-humidity material crusher.

3.Stirring Process 

In order to enrich the nutrients of organic fertilizer, you can add appropriate amounts of trace elements, humic acid and other nutrients. Dynamic batching machine can accurately control the amount of ingredients.

After adding the ingredients, you need to fully mix the ingredients with the organic fertilizer. If the amount is small or you want to save investment costs, you can mix it manually. If the amount is large, it is recommended to use a mixer.

4.Granulation

Common granulation equipment includes disc granulator, stirring tooth granulator and rotary drum stirring tooth granulator, etc. You can choose the appropriate granulation equipment according to the actual situation.

5. Drying

The formation of particles requires the addition of water, so the particles need to be dried after granulation to prevent sticking.

6. Cooling

The granular organic fertilizer needs to be cooled after drying for easy storage. If the hourly output is less than 3 tons or there is enough drying space, the organic fertilizer can be cooled by itself, otherwise a cooler is needed for cooling.

7. Finished Product Screening

In order to make the organic fertilizer particles uniform in size and sell at a higher price, the organic fertilizer particles must be screened. Organic fertilizer that does not meet the size must be returned to the crushing stage for re-granulation.

8.Packaging

Qualified finished granular organic fertilizer is quantitatively weighed and packaged by automatic packaging machines.

Market Prospect Analysis

‌Large Market Demand‌: With the development of modern agriculture, farmers' demand for high-quality fertilizers is growing. Bio-organic fertilizers are widely welcomed by the market for their environmental protection, high efficiency, and soil improvement. In addition, animal manure can also be processed into feed additives to meet the needs of the breeding industry for low cost and high efficiency‌.

‌Policy Support‌: The country vigorously promotes ecological agriculture and circular agriculture, and has given a series of policy support and financial subsidies to environmentally friendly products such as bio-organic fertilizers, providing a good development environment for animal manure processing projects‌.

Economic Benefit Analysis

‌Cost And Profit‌: The cost of obtaining animal manure is low, and high-quality organic fertilizers can be produced through simple processes such as fermentation, composting, drying, crushing and packaging. The ex-factory price of granular pure animal manure organic fertilizers on the market is generally around 650 yuan, and the wholesale price is between 700-800 yuan. The net profit per ton of animal manure is about 400 yuan‌.

‌Return On Investment‌: In rural areas, the investment in building an animal manure processing plant is not high, and a simple crusher and some auxiliary tools are enough. Starting from a small scale, you can start operations with an investment of 20,000 to 30,000 yuan.

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