Centralized ship ballast water treatment platform

Disclosed is a centralized ship ballast water treatment platform, comprising a middle control area and a plurality of extended treatment areas, wherein the extended treatment areas are arranged in a centrosymmetric form around the middle control area; the middle control area is used for controlling and monitoring the overall operating condition of the platform and for the daily living of staff; each of the extended treatment areas comprises a ballast water transfer pipeline (4), a mooring rope, a crane (3), a water pump, a water storage tank (5), and a ballast water treatment system (6); and a water quality-monitoring device tests whether the quality of ballast water treated by the ballast water treatment system (6) reaches a standard, and the treated ballast water is discharged into a sea area via a drain port (7). The centralized ship ballast water treatment platform can reduce the building and operation costs of ocean-going ships, reduce compartment spaces and reduce the impact of ship ballast water on the ecological environment to the minimum; moreover, when a ship is docked at an anchorage, ballast water can be replaced, thereby greatly increasing working efficiency.