Physical disinfection

摘要

When ultraviolet irradiation is used, amalgam lamps surrounded by quartz sleeves produce UV light, which changes the molecular structure of the organism and thereby prevents it from reproducing. The deoxygenation method relies on reducing the pressure of oxygen in the space above the water by injecting an inert gas or inducing a vacuum. The removal of oxygen may also lead to a reduction in corrosion. If heat is employed to treat the ballast water, the water can be used to provide engine cooling while being disinfected.