الفهرس 
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Abstract
Ships’ ballast water is probably the most important mechanism transporting exotic marine and freshwater organisms around the world today. This thesis reviews the problem caused by ballast water, and the impacts of an introduced organisms which have threating effects to environment, human health and economy. It includes some of various laws, regulations, guidelines, administrative orders and other directives issued by international, national and sub-national governing bodies have attempted to address the problem of exotic organisms carried in ships’ ballast water, with most of these directives arising since 1989
The thesis discusses the solutions of the ballast water problem and the various technologies that could be used for treating ballast water onboard ship and on-shore.
The thesis include two methods:
The first one is a proposed method for ballast water treatment on board ship.
The second one is a proposed system for ballast water management which may be applied in ports.