Chicken manure, as a common organic fertilizer raw material, contains abundant nutrients such as nitrogen, phosphorus, and potassium. Through appropriate fermentation treatment, it can be converted into efficient organic fertilizer. The fermentation process of chicken manure is a key link in the organic fertilizer production line, which directly affects the quality and efficiency of the final fertilizer product. The following is a typical process and detailed steps for fermenting chicken manure to prepare organic fertilizers:

Chicken manure fermentation process flow

1. Raw material preparation

Collect fresh or dry chicken manure, preferably processed as soon as possible after collection to reduce nutrient loss.

Clean up foreign objects such as plastic, stones, or other non decomposable substances from chicken manure.

According to the needs, appropriate auxiliary materials such as sawdust, rice husks, wheat straw, etc. can be mixed in a certain proportion to adjust the carbon to nitrogen ratio (C/N ratio) to about 30:1 and promote the fermentation process.

2. Preliminary mixing

Use a mixer or shovel to thoroughly mix chicken manure with auxiliary materials, ensuring that each part is exposed to sufficient oxygen and microorganisms.

Add water to adjust the moisture content to 50%~60%. Too high or too low is not conducive to microbial activity.

3. Start composting fermentation

Stack the mixed raw materials into long strips or place them in dedicated organic fertilizer fermentation tanks. The height of the compost is usually recommended to not exceed 2 meters, and the width can be flexibly adjusted according to the site conditions.

In the early stage of composting, an appropriate amount of fermentation starter bacteria can be sprinkled to accelerate the fermentation process.

4. Regularly flip the pile

Once the temperature inside the compost rises to 55 ° C~60 ° C, it indicates that the fermentation reaction has started.

In the next few days, the temperature in the composting center may rise above 70 ° C. At this time, it is necessary to regularly flip the compost (approximately every 3 days) to supply oxygen to the deep microorganisms, prevent local hypoxia from causing harmful bacteria to grow, and help maintain uniform temperature and promote uniform fermentation.

5. Control the fermentation cycle

The entire fermentation cycle usually lasts from 20 days to several months, depending on multiple factors such as raw material composition, seasonal temperature, and flipping frequency.

When the compost no longer heats up and has a dark brown appearance, loose texture, and no obvious odor, it indicates that fermentation is basically complete.

6. Post processing

Spread out the fermented compost and air dry it further to facilitate the next step of crushing and granulation.

If necessary, screening can also be performed to remove large chunks of material that have not been fully decomposed.

7. Secondary fermentation (maturation)

In some cases, in order to obtain more stable and mature organic fertilizers, a second fermentation stage, also known as the "post fermentation" stage, may be carried out.

This stage is carried out slowly under well ventilated conditions, with the aim of allowing the microorganisms in the fertilizer to continue their activity and further degrade organic matter until the fertilizer is fully matured.

8. Final processing

The chicken manure organic fertilizer that has undergone secondary fermentation can be crushed to the desired particle size by an organic fertilizer grinder, and then granulated into granules by a granulation mechanism for easy packaging and use.

Other trace elements or bioactive ingredients can be added according to market demand to increase the added value of fertilizers.

9. Quality inspection

The final step is to conduct comprehensive quality testing on the finished organic fertilizer, including indicators such as nutrient content, pH value, moisture content, etc., to ensure compliance with national or local standards.

Scientific management and precise operation are crucial in the process of fermenting chicken manure to prepare organic fertilizers. This not only maximizes the preservation of the nutritional value of chicken manure, but also effectively controls odors and pathogen risks, ensuring production safety and environmental protection. Through the above standardized process, environmentally friendly and efficient organic fertilizers can be mass-produced, providing strong support for increasing agricultural production and income.