PROBLEM TO BE SOLVED: To provide a ballast water treatment method in which the occurrence of inhibitory factors of normal execution of ballast water treatment in which an aqueous solution obtained by dissolving a chlorine-based agent in water is used as a disinfectant, can be suppressed or prevented.SOLUTION: The ballast water treatment method in which the ballast water contained in a ballast tank included in a ship is disinfected inside the ship, includes a disinfectant preparation step for preparing a chlorine-based disinfectant ms in order to carrying out the disinfection of the ballast water contained in the ballast tank, a disinfection treatment step for injecting the chlorine-based disinfectant into the ballast water via a piping route Ls to disinfect the ballast water, and a residue removal step for removing at least a portion of a residue Re of the chlorine-based disinfectant remaining in the piping route without being used for the disinfection of the ballast water, from the piping route, and in which the residue removal step includes a step for supplying a water Ws and/or removal reactive substance An* to the piping route and the removal reactive substance is a reducing substance or an alkaline substance.SELECTED DRAWING: Figure 8
【課題】塩素系薬剤を水に溶解して得た水溶液を殺菌剤として使用するバラスト水処理の正常な実行の阻害要因の発生を抑制又は防止することができるバラスト水処理方法を提供することである。【解決手段】船舶が具備するバラストタンクに収容されるバラスト水を船舶内で殺菌するバラスト水処理方法が、バラストタンクに収容されるバラスト水の殺菌を行うために塩素系殺菌剤msを用意する殺菌剤準備工程と、前記バラスト水に前記塩素系殺菌剤を配管経路Lsを経由して注入し、前記バラスト水を殺菌する殺菌処理工程と、前記バラスト水の殺菌に用いられずに前記配管経路に残った前記塩素系殺菌剤の残留物Reの少なくとも一部を前記配管経路から除外する残留物除去工程を有し、前記残留物除去工程が、前記配管経路に水Ws及び/又は除去反応性物質An*を供給する工程を有し、除去反応性物質は還元性物質又はアルカリ性物質である。【選択図】 図8
BALLAST WATER TREATMENT APPARATUS AND BALLAST WATER TREATMENT METHOD
バラスト水処理装置及びバラスト水処理方法
2017-06-01
Patent
Electronic Resource
Japanese
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