The working principle of fermenter mainly includes the following aspects:
Gas supply and liquid circulation: The fermenter sprays high-speed air through the air nozzle, and the air is dispersed in the liquid in the form of bubbles, resulting in a decrease in the density of the liquid on the ventilation side and a larger density on the non-ventilated side, thus forming a liquid circulation. This circulation helps the transfer and mixing of oxygen.
Temperature control: The fermenter is equipped with a temperature control system to ensure that the tank maintains a suitable temperature range. This can be achieved by heating or cooling the medium in the tank to maintain ideal temperature conditions to promote the growth and metabolism of microorganisms.
Humidity regulation: The fermenter usually has a humidity control function to ensure that the humidity in the tank is within a suitable range. Humidity regulation can be achieved by increasing or decreasing the humidity source in the tank to meet the requirements of microbial growth.
Mixing and stirring: During the fermentation process, mixing and stirring are necessary to maintain a uniform distribution of microorganisms and culture media in the tank. The fermenter is usually equipped with a stirring device to ensure that the microorganisms and nutrients in the culture medium are evenly mixed and to promote the dispersion of oxygen.
Monitoring and control system: The fermenter is equipped with a monitoring and control system to monitor and record key parameters of the fermentation process, such as temperature, humidity, oxygen and pH value, in real time, and automatically adjust the system operation to maintain optimal conditions.
Different types of fermenters and their working principles:
Airlift fermenter: High-speed air is sprayed by air nozzles to form bubbles dispersed in the liquid, resulting in differences in liquid density, thus forming a circulation. The advantages of airlift fermenters are low energy consumption, small liquid shearing effect, simple structure, and high oxygen transfer capacity.
Universal fermenter: The rotor immersed in the fermentation liquid rotates rapidly, and the gas and liquid are evenly mixed by centrifugal force and stirring. This fermenter uses the stirring of the rotor to form a strong mixed flow of gas and liquid around the impeller, the air bubbles are crushed, and the gas and liquid are fully mixed.
Application areas: Fermenters are widely used in agricultural production, ecological protection and other fields. By treating organic waste, the organic fertilizer produced by the fermenter can improve the quality and yield of agricultural products, while reducing the use of chemical fertilizers and reducing pollution to the environment.
