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Experiments with Ultraviolet Light, Ultrasound and Ozone Technologies for Onboard Ballast Water Treatment.
| 题名： | Experiments with Ultraviolet Light, Ultrasound and Ozone Technologies for Onboard Ballast Water Treatment. |
| 作者： | sassi, j. viitasalo, s. rytkonen, j. leppakoski, e. |
| 关键词： | laboratory tests, cost evaluation, case studies, literature review |
| 摘要： | The introduction of invasive marine species into new environments through ships' ballast water, attached to ships, hulls and via other vectors has been identified as one of the four greatest threats to the world's oceans. Different treatment methods have been proposed for onboard ballast water treatment options to reduce this effect, among those also ultraviolet light (UV), ultrasound (US) and ozone (O3) treatments. The literature survey that was carried out during the first phase of the project indicated that all of the methods have potential for ballast water treatment and numerous reports were available presenting the research activities carried out around the world. The technology that has been studied most widely appears to be UV, whereas US seems to have very limited application in terms of ballast water treatment. In addition to single technologies, the combinations of US + UV and UV + hydrogen peroxide (H(sub 2)O(sub 2)) were also tested as part of the hurdle experiments. During the first phase, the methods were tested under laboratory both in Finland and the UK. After an evaluation of the laboratory test results, onshore trails were carried out in Tvarminne, Finland, in order to confirm the proper operation of the devices and to obtain information about the efficiency of the treatment options against the organisms in the Baltic Sea marine environment. The effects on phytoplankton and bacteria were not studied. / NOTE:Research note. |
| 总页数： | u0705；86p |
| 报告类型： | 科技报告 |
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