Device and method for treating ballast water for ship

摘要

A filter (1) disposed as a cylinder around an axis line, and provided to be rotatable around the axis line, a treated water nozzle (2) for emitting treated water toward an outer circumferential surface of the filter (1), a case (3) provided to surround the filter (1), and including an outer cylindrical portion (31) having a nozzle opening (21) of the treated water nozzle (2) therein, a filtered water flow path (7) for guiding filtered water that has been transmitted through the filter (1) to outside of the case (3) from within the cylinder of the filter (1), and a discharge flow path (8) for discharging discharged water that was not filtered through the filter (1) to the outside of the case (3) are provided. Consequently, a device of treating ballast water for a ship that can be mounted on a ship and can efficiently kill or inactivate microbes in ballast water discharged from or loaded into the ship, and a treatment method thereof can be provided.