The Sediment Transport Pattern from a Large Industrial Complex
to an Enclosed Bay |
Young Tack Kwon, and Chan Won Lee† |
Department of Environmental Engineering, Kyungnam University, Masan, Korea |
Corresponding Author:
Chan Won Lee ,Tel: +82-55-249-2988, Fax: +82-55-249-2994, Email: water@kyungnam.ac.kr |
Received: November 9, 2005; Accepted: April 10, 2008. |
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ABSTRACT |
The movement of sediments in the stream crossing a large industrial complex to the mouth of Masan Bay was monitored for eight years. Sediment
samples were seasonally collected in the period of 1992~1997 and 2001~2002. The heavy metal content of sediment was found to be higher at
dry season with the peak on February and significantly decreased at rainy season. Metals content in stream sediments were rapidly decreased by
large precipitation events in rainy season because the contaminants in the upstream sediments were transported to the dredged area of Masan Bay
where is a typical enclosed bay in Korea. The increasing and decreasing tendency of heavy metals in sediment was repeatedly observed for six consecutive
years. The heavy metals assessment of stream sediment provide us the information about the pollutant source, transport pattern and control
strategy along the industrial complex. It was strongly suggested that the transportable stream sediments of an industrial area should be controlled as
one of the important strategies to restore and manage the enclosed bay. Combined wastewaters have been collected and treated in a publicly owned
treatment works (POTW) after industrial wastewater treatment at each location of industries since 1994. A field study was conducted to investigate
the pollutant removal efficiency and performance of contact oxidation system installed and operated in two locations in the stream. The stream sediment
quality was improved since then, and as a consequence the habitat of the estuary has been restored. |
Keywords:
Heavy metals | Industrial complex | Management | Sediment transport |
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