Biological Fermentation Tank

The Basic Conditions for Fermentation Tanks

The mechanical agitation fermentation tank is one of the common types used in the fermentation plant. It uses mechanical agitators to completely mix air and the mash, and make the oxygen dissolved in the mash, which guarantees the enough supply of oxygen for microbial growth, reproduction and fermentation. Several basic requirements needed to make fermentation tanks as followed:

1. Fermentation tanks should have suitable scale of diameter to height, which is generally about 1.7 to 4, the longer the tanks are, the higher the utilization rate of oxygen will be.

2.  Fermentation tanks can bear certain pressure. When fermentation tanks are normally working or being disinfected, there will certain pressure (hydraulic pressure and pneumatic pressure) and temperature in the tanks, so all of their components must have certain strength to bear the pressure.

3. The stirring and ventilating device in fermentation tanks make the gas and the liquid fully mixed to make sure that the fermentation broth must dissolve oxygen.

4. Fermentation tanks should have sufficient cooling area. In the process of microbial growth and metabolism, it will release a lot of heat. So in order to control the temperatures on different stages in the fermentation process, it should be equipped with adequate cooling area.

5. Fermentation tanks must minimize dead corners to avoid accumulation of dirt, so it can be thoroughly sterilized to avoid bacterial contamination.

6. The seal of agitators should be tight to minimize leakage.