Introduction of invasive species as a result of ballast water discharge is a serious concern with the marine ecosystem. With increasing analysis during the ballast water management, recent experiments are now being centered on the types of invasive species and physico-chemical parameters discharging into ports. Screens/Discs: Screens (fixed or movable) https://ballastwatertreatmentsyst21849.blogdun.com/22410286/top-latest-five-ballast-water-management-urban-news