NOVELTY - The equipment (100) comprises an exhaust pipe (120) ejecting an exhaust gas generated from an engine of a vessel. A ballast tank (110) is installed in the vessel. A feedback line (160) is installed at a ballast water sterilization chamber (130) to transfer the ballast processing water from a dehydrating precipitate sludge in a precipitate processing unit. A ballast water sterilization unit (131) sprays the exhaust gas to the ballast water so that the ballast water is sterilized by removing waste heat of the exhaust gas. The exhaust pipe is coupled with the sterilization chamber.    USE - The transaction equipment is useful in a vessel for sterilizing ballast water (all claimed).    ADVANTAGE - The equipment reduces environmental pollutant and contamination during the water sterilization in an economical manner.    DETAILED DESCRIPTION - The ballast water sterilization equipment (100) comprises an exhaust pipe (120) for ejecting an exhaust gas generated from an engine of a vessel. A ballast tank (110) is installed in the vessel to an outside in order to accept the ballast water for maintaining balance of the vessel. A pipe is adapted for transferring ballast water through the ballast tank. A feedback line (160) is installed at a ballast water sterilization chamber (130) to transfer the ballast processing water from a dehydrating precipitate sludge in a precipitate processing unit. The precipitate processing unit separates the precipitated ballast water in an inner bottom of the ballast water sterilization chamber. A ballast water sterilization unit sprays the exhaust gas to the ballast water so that the ballast water is sterilized by removing waste heat of the exhaust gas. The exhaust pipe is connected with the ballast water sterilization chamber. The ballast water sterilization unit comprises a ballast water supply pump that is installed at the ballast water transfer pipe and is adapted to supply the ballast water within the ballast tank to the ballast water sterilization chamber. A precipitate processing unit comprises a precipitate feed pump that is installed between the ballast water sterilization chamber and a precipitate separator. The precipitate feed pump transfers the precipitated ballast water to the precipitate separator. A ballast water sterilization unit comprises a control valve that controls the spraying of the gas to the ballast water. An atomizer reduces the spraying of exhaust gas to the ballast water supplied through the ballast water transfer pipe. A controller controls the ballast water sterilization unit and the precipitate processing unit. An INDEPENDENT CLAIM is included for a vessel including a ballast water sterilization transaction equipment installed at a hull of the vessel.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a ballast water sterilization transaction equipment.    Ballast water sterilization transaction equipment (100)    Ballast tank (110)    Exhaust pipe (120)    Ballast water sterilization chamber (130)    Feedback line. (160)