PROBLEM TO BE SOLVED: To restrain or prevent the occurrence of inconvenience on ballast water treatment caused by a chlorine disinfectant of remaining without being used for the ballast water treatment of a ship.SOLUTION: A ship VSL comprises a ballast pump PM having a first operation mode of storing or filling seawater Wo taken in from the ship outside in a ballast tank by circulating toward the ballast tank T and a second operation mode of draining the seawater taken in from the ship outside to the ship outside by circulating without passing through the ballast tank and a ballast water treatment device having a disinfectant injection port Is for injecting a chlorine disinfectant into the seawater of circulating toward the ballast tank in the first operation mode and a residue injection port Id for injecting at least a part of a residue Re of the chlorine disinfectant of remaining without being injected into the seawater in the second operation mode and in the first operation mode, into the seawater of circulating toward the ship outside.SELECTED DRAWING: Figure 16
【課題】船舶のバラスト水処理に使用されずに残留する塩素系殺菌剤に起因するバラスト水処理上の不具合の発生を抑制又は防止することである。【解決手段】船舶VSLが:船外から取水した海水WoをバラストタンクTに向かって流通させバラストタンクに収容又は漲水する第1の運転モードと、船外から取水した海水をバラストタンクを経由することなく流通させ船外に排水する第2の運転モードを備えたバラストポンプPmと;第1の運転モードのときバラストタンクに向かって流通する海水に塩素系殺菌剤を注入する殺菌剤注入口Isと、第2の運転モードのとき第1の運転モードのときに海水に注入されず残った塩素系殺菌剤の残留物Reの少なくとも一部を船外に向かって流通する海水に注入する残留物注入口Idとを備えるバラスト水処理装置と、を備えている。【選択図】図16
SHIP
船舶
2018-08-02
Patent
Electronic Resource
Japanese
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