Vessels traversing the world’s oceans carry ballast tanks filled with seawater to ensure stability, trim and structural integrity. However, the water in ballast tanks contains micro-organisms that can wreak havoc on local maritime ecosystems when water originating in one environment is emptied into another.
Experts estimate that at least 7,000 different species are being carried in ballast tanks around the world, and the International Maritime Organisation calls invasive marine species are one of the greatest threats to the world’s maritime ecosystems. The reason the problem is so serious is that, unlike damage from marine pollution such as oil spills, damaged caused by invasive species is usually irreversible.
Cleaning up a maritime mess
- UV radiation
- and ozone generated in-situ by the UV-system.
DESMI Ocean Guard’s unique ozone generating low pressure UV lamps allow us to do double treatment, UV and ozone, with very low power consumption. Tests have shown that our system is very effective and exceeds the requirements from IMO. Tests also showed that fresh water is particularly challenging, but by optimizing the system we managed, as the first, to pass the IMO tests also in fresh water”, – says Rasmus Folsø from Maersk Maritime Technology that has been working closely with the project in the last few years.