Fermentation process of chicken manure organic fertilizer

The equipment and technological methods for processing chicken manure into organic fertilizer are mainly divided into pre-fermentation and late-stage deep processing. How to make chicken manure organic fertilizer with high utilization rate, reasonable nutrients, easy to absorb, and achieve an ideal state? In the later stage of deep processing, what kind of equipment is used to process the finished product, so that the fertilizer efficiency can continue to be better used today? We elaborated from fermentation and process equipment.

Fermentation process of chicken manure organic fertilizer

Simply put, it is to collect chicken manure and cow urine, add hay and decaying silage to compost, and let it ferment. In the fermentation process, the chicken manure is fully fermented by using a pile turning machine. This can only be achieved by turning the pile in time and evenly. Otherwise, some places are very dry and some places are very wet, which will affect the quality and effect of fermentation.

Chicken manure fermentation method

1.Dilute the strain: add corn flour or wheat bran or wheat bran in a ratio of 1:10, so that the organic fertilizer starter and corn powder (or bran, rice husk, wheat bran, etc.) are fully stirred evenly.

2.Add auxiliary materials: add straw, rice bran and other auxiliary materials that account for 10%-15% of the total fermented chicken manure to the fresh chicken manure to adjust the moisture, aeration, and carbon-nitrogen ratio. The carbon-nitrogen ratio is between 30-40, so that the water content of chicken manure is controlled at about 60%, subject to the watermark between the fingers but not dripping.

3.Inoculation of bacterial powder: fully mix the stirred bacterial powder and the material with adjusted moisture evenly. This step must be fine to facilitate better fermentation of the material.

4.Turning and throwing: pile the materials into 80-250cm high and within 2-30 meters wide (the pile is as high and wide as it is free, in order to facilitate the turning of the pile, the larger the pile, the more heat it accumulates, the faster the temperature rise), The length can be flexibly designed according to the amount of material.

5.Turnover: According to the local temperature, the general material will increase by about 5-10℃ every day. When the temperature reaches about 60℃, turn the pile, break the big pieces and adjust the moisture of this part to between 50~60%, and turn again heap. After three or four days, the temperature rises to more than 50°C again, and the pile is turned over again. After three or four days, the temperature reaches 60°C and let it stand. When the temperature drops to ambient temperature, the pile will decompose afterwards. Generally, turn the pile more than 3 times. It took about 15 days to complete the decomposition and the organic fertilizer was successfully fermented.

Use chicken manure organic fertilizer equipment for deep processing

1.The ingredients are crushed and mixed

Use the batching bin to crush, proportion and mix the composted materials, N, P, K and other inorganic fertilizers and other additives and other raw materials in a certain proportion through a material pulverizer and a horizontal mixer. The function of this system is to crush, mix and mix the composted materials, NPK inorganic fertilizers and other additives in a certain proportion. Based on years of experience, the equipment recommendations are as follows: Use a vertical grinder to crush chicken manure compost, which is not easy to stick to the wall and not easy to block, and the multi-layer turbulent chain hammer structure improves the crushing performance; the continuous automatic batching system is suitable for organic fertilizer raw materials. The dynamic metering and batching control mixing operation is equipped with a double-shaft continuous mixer, which has good sealing performance, and the sticky and wet materials are not easy to adhere to the root of the mixing shaft.

2.Organic fertilizer granulation

A new type of organic fertilizer granulator is used to granulate the material. The function of this system is to make granules from the materials after the crushed ingredients are mixed. A flat die granulator is suitable for granulation. Its advantages are: wide adaptability of raw materials, especially suitable for organic materials, wide requirements for raw material density and raw material moisture, and raw materials do not need to be dried; the diameter of the pressure roller is large, and the template can be double-sided Used, the materials are evenly distributed in the compression chamber, the granulation is stable, the particle forming rate is high, the appearance of the finished particles is uniform and not easy to be broken; the whole granulation and molding process does not add water, which saves the cost of subsequent particle drying; Granular raw materials (after composting) generally do not need to be finely crushed, and the fine stones can be crushed directly, and it is not easy to block the die hole of the platen.

3.Screening and material return system

The granules output from the granulation forming system have certain differences in particle size and need to be sieved and classified. The selected rotary screening machine requires low vibration, low noise, convenient screen change, and is equipped with a screen surface cleaning device. It is recommended to be equipped with an automatic material return system to screen out unqualified large and small particles, convey them through a belt elevator, and send them to the granulator to continue granulation after re-pulverization, which helps to improve the continuous operation capacity of the production line.

4.Finished product system

4.1 Drying: Use an organic fertilizer dryer to further remove water from the sieved particles to meet the standard requirements of organic fertilizer moisture content.

4.2 Cooling: Use a cooler to cool the particulate material, which helps particulate storage and quality assurance. The hot particulate material output from the dryer enters the countercurrent cooler from above, and the dry air enters from the lower part of the cooler under the action of the cooling fan. , To carry out sufficient cold and heat exchange with the hot and humid particles from the upper tribe. After cooling, the difference between the particle temperature and the ambient temperature is less than 5°C.

4.3 Packaging: The cooled granular materials are transported into the finished product warehouse through the bucket elevator. Granular materials can be quantitatively weighed and packaged through automatic packaging scales.

Basically, chicken manure is processed by organic fertilizer. The above process stages and fermentation methods are used to realize the harmless disposal of chicken manure, so as to make environmentally friendly, nutrient-rich, and up-to-standard chicken manure organic fertilizer. The required equipment also requires different processing organic fertilizer equipment according to the different process stages of the above fermentation and deep processing stages.