As an environmentally responsible company, Tetra Pak is at the forefront with a dedicated green strategy focusing on sustainable use of natural resources with due regard to the profitability and green image of our customers. By means of new thinking and innovative technology, we are constantly developing new ways to reduce the resource usage, product wastage, and effluents of dairy plants to protect the environment:
Transportation of milk and whey contributes heavily to the environmental footprint and is very costly.
Concentration of the product by means of RO, however, will remove water selectively from the product, and raise the total solids content. Thus, it is possible to transport 3 or 4 times as much dry matter per transport unit. The excess water can be used as process water, contributing further to reduced resource usage.
In connection with cleaning of a process line after production, the first flush water is a mixture of product and water, and this diluted product is most often discharged as waste water. However, by means of RO technology, the Product Recovery process recovers valuable solids from the flush water and retrieves the water. Production wastage is reduced to an absolute minimum, as the concentrated product and the RO water can be reused.
Green Flush is a highly resource-saving, software-based solution for effective flushing of a membrane filtration plant. Compared to a traditional full plant flush, Green Flush reduces water consumption and the flow volume required for effective flushing by up to 30%. Additionally, implementation of Green Flush will shorten the time required for flushing considerably and reduce power consumption accordingly.
Cleaning of milk powder plants requires large volumes of lye, and after a CIP cleaning the lye contains a great deal of dissolved and suspended matter, making it unsuitable for direct use in a new CIP sequence.
As an alternative to dumping large quantities of spent lye, Tetra Pak Filtration has developed a separation method, regenerating 70% to 90% of the lye.
The process can run at 80°C, making it unnecessary to cool the lye prior to separation. This again reduces the resource usage, as energy loss from cooling and reheating is eliminated.
The ESATM or Energy Saving ATD (Anti-Telescoping Device) is a technology that reduces power consumption of membrane filtration plants dramatically, while maintaining the output of the plant.
Tetra Pak’s Water Competence Center works closely together with customers, universities, and other business partners to ensure continuous development of new technologies and applications to push for a sustainable future in food processing.
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About Tetra Pak
Together with our customers we make food safe and available, everywhere. Since the start in 1951 we have taken pride in providing the best possible processing and packaging solutions for food.