The aerobic fermentation tank equipment is mainly composed of a fermentation room, a feeding lifting system, a high-pressure air supply system, a spindle 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 waste with a high moisture content of about 75% with the reflux material, biomass, and fermentation bacteria in 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. Aerobic 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 decomposes rapidly 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°C, and the highest can reach 70°C. Through the air supply and aeration system, oxygen is evenly sent to the fermentation tank to meet the oxygen demand of the fermentation process, so that the material can be fully fermented and decomposed, and the high temperature stage is maintained for 5-7 days. When the decomposition rate decreases slowly, the temperature gradually drops below 50 degrees. The whole fermentation process lasts 7-15 days. Elevation of temperature and ventilation and oxygenation accelerate the evaporation of moisture in the material, and the exhaust gas and water vapor are discharged through the deodorizer after being treated by 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. To achieve the purpose of harmless treatment of feces.
3. Automatic feeding part:
The materials in the fermentation chamber are stirred by the main shaft and fall layer by layer under the action of gravity, and after the fermentation is completed, they are discharged as organic fertilizer raw materials.
Advantages of aerobic fermentation tank equipment:
1. Utilize the high-temperature fermentation technology of biological bacteria, and the operation cost is low;
2. Main body insulation design, auxiliary heating to ensure the normal operation of the equipment in low temperature environment;
3. Through the biological deodorization equipment to achieve gas discharge standards, no secondary pollution;
4. The main body of the equipment is made of special stainless steel material, which reduces corrosion and has a long service life;
5. It occupies a small area and has a high degree of automation. One person can control the entire fermentation process;
6. The processed materials are used as organic fertilizer raw materials to realize the resource utilization of organic waste.
The disadvantages are also obvious, the equipment cost of the fermenter is the highest.
Post time: Feb-27-2023
