Carlsberg – aiming to halve the amount of water used to make beer


Sustainability is guiding for the Danish brewery. One of their goals is ‘ZERO water waste’ and expresses the ambition to limit the amount of water used to make beer from 3.4 to 1.7 liter water per liter of beer by 2030. In 2019, Carlsberg launched a call to make it happen.


Belgian OEM Pantarein submitted a project to reuse all wastewater that a brewery produces. Rinse water, cleaning water and all other flows are sent through a plant, with blackwater as the only exception.

The plant has several stages. The first one is the biological wastewater treatment with Blue Foot membranes to separate treated water from solid material and bacteria. Subsequent stages involve reverse osmosis and UV for disinfection.


The first plant for Carlsberg is built in Fredericia, their home base and flagship brewery, where al new technologies are being tested, demonstrated and evaluated. In January 2021 the plant was put into operation. It has a capacity of 100 m3/h and is expected to process about 750.000 m3 per year.

With this wastewater reuse plant at the Fredericia brewery, Carlsberg is now one step closer to their ‘ZERO water waste’ goal.

Customer: Carlsberg

Location: Fredericia, Denmark

Sector: Food & beverage

Partner(s): Pantarein

Size: 48 IPC® Flex Navy modules

Start-up: January 2021