A new water recycling plant will turn Carlberg’s largest brewery in Denmark into the most water efficient brewery in the entire Carlsberg Group, and probably also the world. Carlsberg’s Fredericia Brewery has consistently focused on resource management and water reduction, but even more advanced water recycling technologies were required to reach the ambitious targets set in Carlsberg’s ‘Together Towards ZERO’ programme. Carlsberg decided to develop a new water recycling plant in close cooperation with the Danish consultancy company NIRAS, who is managing the project. The production facility will recycle 90 per cent of all process water and halve its overall water usage from 2.9 to 1.4 hectolitres of water per hectolitre of produced beer, making it Carlsberg’s first brewery to virtually eliminate water waste. According to NIRAS’ water experts, the construction of the water recycling plant is a major technical achievement that will have a huge impact on the sustainable use of water and energy. The project will use advanced water treatment technologies such as the highly efficient Reverse Osmosis (RO) and Advanced Oxidation Processes (AOP) in order to deliver water of drinkable quality. Due to the production of biogas in the pre-treatment step, the plant will produce approximately four times the energy used for the processes. The project will serve as a learning platform for Carlsberg breweries worldwide. Carlsberg’s aim is to halve its water usage globally from 3.4 to 1.7 hectolitres per hectolitre of beverage produced by 2030.
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