Ballast Water Treatment System (BWTS)

A Ballast Water Treatment System (BWTS) is a technology used on ships to disinfect ballast water, which is taken on or discharged to maintain stability and balance during voyages. The system eliminates or reduces harmful aquatic microorganisms, invasive species, and pollutants in the water before it is released into new environments. Techniques include filtration, disinfection with ultraviolet light or chemicals, ensuring that the ship's ballast water does not spread invasive species and protect marine ecosystems. BWTS is a key part of international efforts to promote sustainable shipping and maritime environmental protection.