Evaluation of the ecotoxicity and biological efficacy of ship's ballast water treatment based on hydroxyl radicals technique

► An innovative OH radicals technology was developed for ballast water treatment. ► The OH-based BWTS has proven to be reliable and effective during treatment. ► The biological efficacy test results met the Regulation D-2 of the Ballast Water Convention. ► No residual toxicity effects were observed for the treated water.