Marine Engineering

Ballast water treatment is the process of treating ballast water in order to actively remove, kill and/or inactivate foreign organisms prior to discharge. Large vessels require thousands of tons of water to ensure stability and maneuverability, and the environmental impact can be considerable. These impacts result from the fact that the ballast water can contain hundreds of different invasive species, many of which can have serious ecological, economic and public health effects if transferred to regions where they are not native. The recognition of these effects has made ballast management increasingly important for protection of the marine environment. There are two generic types of process technology used in ballast water treatment: solid-liquid separation and  disinfection Separation processes:   Solid-liquid separation is simply the separation of suspended solid material, including the larger suspended micro-organisms, from the ballast water, either by...