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http://dx.doi.org/10.5762/KAIS.2020.21.12.426

Comparison of sampling method of phytoplankton for type approval of ballast water management system  

Jang, Pung-Guk (Ballast Water Research Center, Korea Institute of Ocean Science and Technology)
Hyun, Bonggil (Ballast Water Research Center, Korea Institute of Ocean Science and Technology)
Lee, Woo-Jin (Ballast Water Research Center, Korea Institute of Ocean Science and Technology)
Choi, Keun-Hyung (Dept. of Oceanography and Ocean Environmental Science, Chungnam National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.12, 2020 , pp. 426-433 More about this Journal
Abstract
This study aimed to compare the pretreatment methods of phytoplankton for type approval of the Ballast Water Treatment System (BWMS). The International Maritime Organization (IMO) and the United States Maritime Police (USCG) use two different test methods for this purpose. To compare the two methods, a test for concentration and non-concentration was performed with cultured and natural phytoplankton, and samples from the land-based BWMS test. The extent of damages caused by the process of concentration varied between cultured and natural species, indicating differences depending on the physiological and morphological characteristics of the species. In the land-based test, in the control water with a high biological population, the number of non-concentrated samples was about twice as high as that of the concentrated samples. There was no distinct difference between the two methods in the treated water with a low biological population. Thus, although there is a difference between concentration and non-concentration for phytoplankton sampling, the concentration method can be applied as a method of evaluating BWMS performance. However, a method for evaluating whether live species in treated water may be lost or damaged during the concentration process of sampling should be developed and validated.
Keywords
Ballast Water Management System; Netting Effects; Phytoplankton Enumeration; Ballast Water; Type approval test;
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