nfiltered beer as “body feed”, thereby constantly building up the depth of the filter cake.To act as a “police filter” after the kieselguhr, a cartridge filter or sheet filter can he installed.AdditivesAdditives such as stabilising agents, colouring and primings (sugar) can be dosed to the beer.CarbonationIn order to achieve the finished product specification for CO~, the beer is carbonated before being sent to the bright beer tank. Nitrogen gas may also be used in small quantities to favour foam performance.Bright Beer TanksWhen the filtration process is completed, the beer is ready for packaging. Prior to packaging, the beer is stored in bright beer tanks.Cleaning in Place (CIP)It is important that all process equipment and pipes are kept clean and disinfected.Cleaning is done by means of CIP plants, where cleaning agents are circulated through the equipment or sprinkled over the surface of the tanks. Disinfection takes place through a combination of high temperature, cleaning agents and disinfectants. Caustic and/or acid are normally used as cleaning agents. The cleaning and disinfection of the brewery equipment can involve the use of substantial amounts of energy, water, cleaning agents, and disinfectants.Several CIP units are usually required in order to cover all the process areas in the brewery.PackagingFrom the bright beer tanks the beer is pumped to the packaging area, where it is bottled, canned or kegged.During this final operation it is important that:•The beer is prevented from coming into contact with oxygen:•No carbon dioxide is lost, as the beer was carbonated to specifications during beer processing;•The beer is not infected. (If it is infected, its shelf life will be reduced and the beer will have off-flavours).In packaging lines using non-returnable bottles and cans, the bottles/cans are only flushed with water before filling. The bottle washer consumes large quantities of ene...
