Detailed interpretation of the process flow of organic fertilizer fermentation tank

Detailed interpretation of the process flow of organic fertilizer fermentation tank

The organic fertilizer fermentation tank equipment is an integrated complete set of equipment that specializes in processing domestic sludge, kitchen waste, livestock manure and other organic wastes. It mainly uses microorganisms to decompose and decompose the organic matter in the waste, and convert it into organic fertilizer raw materials to realize resource utilization.

The organic fertilizer fermentation tank can be used to process organic wastes such as pig manure, chicken manure, cow manure, sheep manure, mushroom residue, traditional Chinese medicine residue, crop straw, etc. The fermentation machine only covers an area of 10-30 square meters), no pollution (closed fermentation), completely kills the eggs of disease and insects (can be adjusted to 80-100 ℃ high temperature), suitable for breeding enterprises, circular agriculture, ecological agriculture to realize waste resource utilization.

The organic fertilizer fermentation tank equipment is mainly composed of a fermentation chamber, a feeding and lifting system, a high-pressure air supply system, a main shaft drive system, a hydraulic power system, an automatic discharge system, a deodorization system and an automatic control system. The technological process includes four processes: mixing and tempering, feeding, aerobic fermentation, and automatic feeding.

(1) Mixing part

The mixing part is to mix feces or organic wastes with a high moisture content of about 75% with reflux materials, biomass and fermentation bacteria according to a certain proportion, and adjust the moisture content, C:N, air permeability, etc. to achieve fermentation. condition. If the moisture content of the raw material is 55-65%, it can be directly put into the tank for fermentation.

(2) The organic fertilizer fermentation tank part

The process can be divided into a rapid heating stage, a high temperature stage, and a cooling stage.

The material enters the fermenter and is rapidly decomposed within 24-48 hours under the action of aerobic bacteria. The heat released makes the temperature of the material rise rapidly. The temperature is generally 50~65℃, and the highest can reach 70℃. Through the air supply and aeration system, oxygen is evenly supplied to the fermentation tank to meet the oxygen demand in the fermentation process, so that the material is fully fermented and decomposed, and the high temperature stage is maintained for 5-7 days. When the decomposition rate decreased slowly, the temperature gradually decreased to below 50°C. The entire fermentation process lasts 7-15 days. The temperature rise and ventilation and oxygenation accelerate the evaporation of the moisture of the material, and the exhaust gas and water vapor are discharged through the deodorizer through the deodorization system, thereby reducing the volume of the material and achieving the reduction, stabilization and harmless treatment of the material. Purpose.

The temperature of the fermentation room is maintained above 50°C for more than 7 days, which can better kill insect eggs, pathogenic bacteria and weed seeds, and achieve the purpose of harmless treatment of feces.