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Research Article

Academia Journal of Scientific Research 5(11): 563-576, November 2017
DOI: 10.15413/ajsr.2017.0421
ISSN: 2315-7712
2017 Academia Publishing 



Physicochemical factors related to water quality improvement at Dongcheon stream in Busan, South Korea

Accepted 17th July, 2017

Kyung-Won Jung1*, Min-Ho Kim2, Eun-Chul Yoo1 and Jeong-Goo Cho1

1Busan Metropolitan City Institute of Health and Environment, 120 Hambakbong-ro 140 beon-gil, Buk-gu, Busan, South Korea, 46616.
2Department of Energy/Bio Engineering, Dongseo University, 47 Jurye-ro, Sasang-gu, Busan 47011, South Korea.


Dongcheon stream runs into the North port from the central urban area in Busan, South Korea. Since May, 2010, the seawater from the North port has been used to maintain the water quality improvement in Dongcheon stream. This had been effective until 2012, but since 2013 the water quality has gradually worsened because of water pollutants caused by sewage and sediment. The aim of this study is to improve the water quality through water and sediment monitoring in Dongcheon stream. The H2S concentration, which had been the main cause of blue tide in Dongcheon stream was at a peak at the Beom4 bridge site from April to June due to the rising water temperature. From the particle size analysis of sediment, 0.02% of the streambeds of the midstream and upstream were covered with mud. The muddy area was about 10 times larger in the downstream than in the upstream. The COD(mg/g) and AVS(Acid Volatile Sulfide, mg•S/g•dry) in sediment as well as the SOD(Sediment Oxygen Demand) were at a peak concentration at Seongseo bridge site. With the rise in the water temperature, the salinity and ORP had an anti-symmetric relation with the pH decline caused by the decomposition of compounds in sediment.

Keywords: Water quality improvement, blue tide, salinity, SOD (Sediment Oxygen demand, g•O2/m2•day), AVS (Acid volatile sulfide, mg•S/g•dry)

This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Cite this article as:
Jung KW, Kim MH, Yoo EC, Cho JG (2017). Physicochemical factors related to water quality improvement at Dongcheon stream in Busan, South Korea. Acad. J. Sci. Res. 5(11): 563-576

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