How Carlsberg treats process water
The first step is to treat process wastewater and remove biological and organic substances using bacteria. You then remove the remaining parts of the organic substances, bacteria, nitrogen, and phosphorus by means of an impervious membrane through which the bacteria cannot penetrate. You subsequently remove the remaining salts in the water using a reverse osmosis system in which only the water penetrates the tight filter. The very last residues of organic matter are removed using a newly developed vacuum UV technology, which also contributes to disinfection of the water.