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- Title
Safety Concentrations of Chemical By-products from Ballast Water Treatment Process.
- Authors
ZHANG Nahui; ZHU Ying; WANG Wei; LING Yun
- Abstract
Ship's Ballast Water Convention has officially entered into force in China. Assessing the potential risk of chemical by-products produced from treated ballast water is a new concern of marine environment safety. In this study, calculation methods for safety concentrations of 41 chemical by-products in treated ballast water was investigated based on risk assessment of ballast water proposed by International Marine Organization. The results indicated that the lowest safety concentrations were respectively dibromoacetonitrile (0.227 µg/L), monochloroacetic acid (2.166 µg/L), sodium hypochlorite (3.09 µg/L), bromochloroacetonitrile (3.58 µg/L), and monochloroacetonitrile (3.64 µg/L), whereas the highest value was dibromo-methane (114 000 µg/L). Deviation of safety concentrations might be due to lack of ecotoxicity data and different input values used in harbor model. The research results can not only provide basic data for the implementation of Ship' S Ballast Water Convention and the establishment of standards for chemical by-products in ballast water, but also provide methods for environmental assessment in related fields.
- Publication
Environmental Science & Technology (10036504), 2020, Vol 43, Issue 2, p220
- ISSN
1003-6504
- Publication type
Article
- DOI
10.19672/j.cnki.1003-6504.2020.02.032