Knowledge of beer fermenter

(1) Preparation of sterile brewing water

Process:

Deep well water → softening treatment → sand filter → activated carbon filter → particle trapping filter → pre-filter → sterilizing filter

The water with high hardness should be softened first, and the membrane filtration treatment should be carried out after removing the large particle impurities.The water sterilizing filter should be sterilized with steam before use, and the water network for production water should be cleaned and disinfected regularly.Aseptic water microorganism control index: total number of bacteria ≤10/100mL, yeast 0/100mL, anaerobic bacteria 0/100mL.

(2) Preparation of sterile air in beer fermenter

The management of aseptic air filtration system must be strengthened because the improper treatment of aseptic air filtration will affect the microorganism control in the production of pure draft beer.The preparation process of sterile air is as follows:

Compressed air, oil removal, water and miscellaneous particles, pre-filter, sterilizing filter, key station sterilizing filter, sterile air

Aseptic air microbial control index: total number of bacteria ≤3 /10 minutes, yeast 0 /10 minutes, anaerobic bacteria 0 /10 minutes.

(3) Preparation of sterile CO2

In the process of beer brewing, CO2 is needed for the addition of sake CO2, the preparation of deoxidized water and the back pressure of the sake tank.In the production of pure draft beer, CO2 should also be aseptic, the CO2 recovery pipeline should also be cleaned regularly by CIP, and the gas sterilizing filter should be steam sterilized before each use.The preparation process of sterile CO2 is as follows:

CO2 liquefied storage tank → heating gasification → pre-filter → sterilizing filter → separating gas point sterilizing filter → aseptic CO2 Bacterial control index: total number of bacteria ≤3 /10 minutes, yeast 0 /10 minutes, anaerobic bacteria 0 /10 minutes.