How is organic fertilizer produced?

2021-08-18 16:36:04

The production process of organic fertilizer generally adopts the method of fermentation to process materials to achieve the effect of decomposing. Crop straw, livestock manure, swamp mud, municipal solid waste and domestic sludge can be used as the source of organic fertilizer. Production technology: The decomposed material is compounded and shaped by adding functional bacteria. At this time, the product is in a dust state, and then it is extruded and granulated by a roller to form a granular organic fertilizer.

1. Production process The production process of organic fertilizers is generally based on fermentation methods, including tank stack fermentation, flat push fermentation, fermentation tank fermentation, and sealed warehouse fermentation. When the organic fertilizer is fermented, the moisture, temperature, carbon-hydrogen ratio, and decomposing agent in the material are all key components of the production. In addition, the bacterial agent plays a decisive role in the fermentation time and fermentation degree of the organic fertilizer. The materials must be decomposed before they can be harmless and functional bacteria can be produced.

2. Production technology During the production of organic fertilizers, the fermentation is generally carried out by high temperature overturning, and the materials are brought into a decomposed state through high temperature and continuous overturning. After the materials are decomposed, functional bacteria are added to compound and shape the products. Dust state. If it is extruded and granulated through a roller, a granular organic fertilizer will be formed. Granular organic fertilizers are superior in appearance and layers than dust-like products, are more commercial, and play a certain role in the production of effective bacteria.

Sources of Organic Fertilizers:

1. Crop straw Crop straw, such as wheat, rice, rape straw, are good organic fertilizer materials. Their organic matter content is as high as 80%, but their nutrients are only 1%. When they are decomposed, they need to be collected first, then crushed, and then decomposed. The decomposing time is relatively long, about 6 months. It is determined that the pests and diseases in the straw are difficult to completely kill.

2. Poultry manure Although livestock manure is very large, it is not easy to obtain and collect. Its organic matter content is only about 20%, and its nutrients are between 2% and 3%, which have not reached the national standard. However, it has high salt content and high water content, and antibiotics and antibiotics can resist the decay of organic matter and the reproduction of biological bacteria. If it is not handled properly in production, it will cause secondary pollution, so the production cost of such materials is relatively high, and the nutrients do not meet the standards.

3. Swamp mud The nutrients of biogas mud mainly come from the added materials. For example, the nutrient content of biogas mud with corn, wheat and other materials is very high, and the organic matter has reached more than 50%, so it belongs to a very good organic fertilizer raw material. . However, the production of biogas mud into organic fertilizer requires relatively high dewatering technology, and the cost is relatively high.

4. Municipal domestic waste and domestic sludge Such materials are relatively easy to obtain, but in the production process, processes such as sorting, dehydration, and sterilization are involved. Generally speaking, they are relatively cheap organic fertilizer raw materials. However, such materials are prone to heavy metal pollution. Pay attention to the amount of use when using them. Generally, they are used on garden flowers, and it is best not to use them on crops.