Mar 17, 2026
The Heidelberg-based clean tech start-up blue activity has successfully closed a significant funding round. With an unconventional biological approach, the team is challenging traditional methods of industrial cooling water treatment. A closer look at the business...
Sep 12, 2025
To prevent the growth of bacteria and algae in cooling towers, industry typically relies on harmful biocides. The Heidelberg-based start-up blue activity is taking a different approach: using microorganisms and biopolymers, it replaces environmentally harmful...
May 26, 2025
Blue Activity offers a natural solution for industrial cooling water treatment in open recooling systems, using microorganisms and biopolymer-based additives. Traditionally, chemical biocides are used in cooling towers, which place a burden on the environment. PFIF, a...
Jan 30, 2025
BlueActivity GmbH as Clean Water Tech is revolutionising water treatment by replacing environmentally harmful hazardous substances for industrial cooling water treatment with natural alternatives such as functional microorganisms and biopolymers for the first time....
Dec 17, 2024
Putting sustainable innovations into practice is a challenge these days – especially for start-ups with new, unfamiliar approaches. But this is exactly what we at blue activity have achieved together with BASF. The first talks about a collaboration in cooling water...
Jul 15, 2024
Blue activity Lars Havighorst from Blue activity presented sustainable industrial cooling water treatment without the use of hazardous substances. ‘In Germany, industry accounts for around 75 per cent of water use. However, hygiene assurance leads to a high level of...
