The industrial acid which is neutralised in NOAH’s processes was previously discharged into the Glomma river.
Kronos Titan AS in Fredrikstad produces a pigment known as titanium dioxide, which is used in the manufacture of products such as paint, paper, plastic, rubber, fish pudding, toothpaste, to name but a few.
Sulphuric acid is used in the manufacturing process. This diluted acid was previously discharged straight into the Glomma river. The acid contains 75 per cent water, but is classed as hazardous waste. Since the plant on Langøya was opened, the acid has been treated and disposed of there.
NOAH’s process neutralises the acid and generates gypsum, which is stable and harmless.