CONTAMINATED WATER MANAGEMENT SYSTEM AND CONTAMINATED WATER MANAGEMENT METHOD

摘要

PROBLEM TO BE SOLVED: To automatically close a gate.SOLUTION: A contaminated water management system is provided which manages contaminated water inside a bay where ships get into a port and into which contaminants flow. The contaminated water management system includes: a passage which communicates the inside and outside of the bay with each other and through which the ships can pass; a first gate which is installed in the passage; a second gate which is arranged on a side of a bay inside with respect to the first gate of the passage and which forms an in-gate area between the first and second gates; and a control device which controls opening/closing of the first and second gates while at least one of the first and second gates is closed.