Tetra Pak® Bactofuge units are traditionally incorporated in the pre-treatment of cheese milk, where typically butter acid spores (Anaerobic spores) are removed. Bactofuge units are also used to enhance the quality of powders, consumption milk and cream where typically aerobic spores (e.g. Bacillus Cerus) are removed.
The efficiency of the unit is stated as a percentage reduction of the incoming level of bacteria and spores. Generally, the efficiency can go up to 99 %. For installations with high demand on efficiency, two or more units can be installed in series.
Outside the unit, the piping is connected to a rotating spindle by hermetic seals. This prevents any air from entering the Bactofuge unit and any product from leaking out. The absence of air minimizes the risk of particle and aggregate size being reduced. It enables better spore and bacteria removal efficiency at a lower rotation speed and hence lowers energy consumption.
By contrast to competing models, in Tetra Pak® Bactofuge units the product enters the bowl smoothly and accelerates gradually as it passes through the rotating spindle. This, combined with the absence of air in the system, means the product is handled gently. This ensures that the size of particles and aggregates is always maintained.
Thanks to the AirTight technology upon which our Bactofuge units are based, they offer a superior spore and bacteria removal efficiency at a lower speed. This enables the use of a steel quality with higher corrosion resistance, which, in turn lengthens the lifetime of the bowl.
The product exits the Bactofuge unit via hermetic outlet seals. This prevents overflow and, depending on the model, the unwanted mixing of the clean milk with the spore and bacteria enriched milk. It also prevents unwanted air entering the machine, which could split the fat globules and cause product foaming downstream.
The product leaves the Bactofuge unit through one or two rotating pumps, depending on model. The use of pumps - as opposed to the paring discs - makes it possible to run a wide range of capacities in the same machine without any mechanical alterations. It also increases energy efficiency.
By lowering pressure and reducing air friction around the separator bowl, EncaptTM cuts the energy consumption of a Tetra Pak® Separator with AirTight technology by up to 40% compared to other separators.* This improves both operational cost and environmental impact. It is achieved through a combination of a low-pressure pump, discharge pump, water lock and hermetically sealed outlet
*Numbers refer to a production scenario of hot milk skimming at 55 000 l/h including feed and booster pumps.
The INSTAL module is delivered as an assembled and pre-tested unit ready for production.
Contact us for more information about Bactofuge units