Ballast water treatment technologies: hydrocyclonic a viable option |
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Authors: | Mazen M Abu-Khader Omar Badran Menwer Attarakih |
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Affiliation: | (1) Chemical Engineering Department, Faculty of Engineering Technology, Al-Balqa Applied University, PO Box 15008, Amman, 11134, Jordan;(2) Mechanical Engineering Department, Faculty of Engineering Technology, Al-Balqa Applied University, PO Box 15008, Amman, 11134, Jordan |
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Abstract: | Many governments, international maritime environmental entities and public health organizations have recognized the environmental,
economic and health threats caused by the translocation and release of ballast water. A wide variety of ballast water treatment
systems are available at both commercial and under evaluation levels. The available ballast water treatment technologies are
reviewed. This work reviews the various types of technologies used in treating ballast water and special attention is given
to hydrocyclonic system. Small scale pilot plant hydrocyclone was investigated to identify the behaviour of solid particle
separation under the effect of alum addition during the separation. The addition of alum gave a clear improvement on the particle
separation but still the use of such a chemical is questionable due to the environmental impact and quantity and time to get
effective separation. For particle size greater than 0.8 mm, the removal efficiency ranges from 70 to 86% without alum and
from 73 to 90% with alum. The improvement in the removal efficiency is estimated around an average of 4% only. Whereas, for
particle size less than 0.3 mm, the removal efficiency ranges from 16.5 to 57% without alum and from 27 to 75% with alum.
The addition of alum gave around an average of 15% improvement in the removal efficiency. This concludes that the addition
of alum has greater impact on the removal efficiency for particle sizes less than 0.3 mm and less impact on greater particle
sizes. |
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