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Impact of Salinity Change on Water Quality Variables from the Sediment of an Artificial Lake under Anaerobic Conditions

Author

Listed:
  • Tae-Hoon Kim

    (Department of Environmental Application Science, Kyung Hee University, Yongin-si 17104, Korea)

  • Ji Hoon Kang

    (School of Earth, Environmental, and Marine Sciences, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA)

  • Sang Hyun Kim

    (Department of Water Supply and Sewerage, Saman Corporation, Gwacheon-si 13837, Korea)

  • I-Song Choi

    (Department of Environmental Application Science, Kyung Hee University, Yongin-si 17104, Korea)

  • Kwang-Hyeon Chang

    (Department of Environmental Application Science, Kyung Hee University, Yongin-si 17104, Korea)

  • Jong Min Oh

    (Department of Environmental Application Science, Kyung Hee University, Yongin-si 17104, Korea)

  • Ki-Hyun Kim

    (Department of Civil and Environmental Engineering, 222 Wangsimni Ro, Hanyang University, Seoul 04736, Korea)

Abstract

Artificial reservoirs are created by dike construction in coastal areas to secure the agricultural water supply on the west coast of South Korea. These systems are found to retain brackish characteristics until total desalination is achieved. To evaluate the effects of salinity on the organic substances released from the sediment, a laboratory water-sediment column experiment was conducted to assess associated changes in water quality variables such as the sediment oxygen demand (SOD), chemical oxygen demand (COD), and concentrations of nitrogen (N) and phosphorus (P). Under high salinity conditions, the release of N from the sediment was promoted with the enhancement of SOD and COD. This trend was accounted for by the response of the microorganisms (cell breakdown of algae and suppression of metabolic activity). Our results suggest that chemicals (N, P, and COD) released from sediment and its overall impact on the water quality of a brackish lake should vary depending on the temporal and spatial dynamics of the salinity.

Suggested Citation

  • Tae-Hoon Kim & Ji Hoon Kang & Sang Hyun Kim & I-Song Choi & Kwang-Hyeon Chang & Jong Min Oh & Ki-Hyun Kim, 2017. "Impact of Salinity Change on Water Quality Variables from the Sediment of an Artificial Lake under Anaerobic Conditions," Sustainability, MDPI, vol. 9(8), pages 1-8, August.
    • Handle: RePEc:gam:jsusta:v:9:y:2017:i:8:p:1429-:d:108013
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