Contribution of Internal Nutrients Loading on the Water Quality of a Reservoir
- 주제(키워드) eutrophication , sediment , internal load , benthic flux , water quality modeling
- 주제(기타) Water Resources
- 설명문(일반) [Lee, Hye Won; Choi, Jung Hyun] Ewha Womans Univ, Ctr Climate Environm Change Predict Res, 52 Ewhayeodae Gil, Seoul 03760, South Korea; [Lee, Yong Seok] Hallym Polytech Univ, Dept Hlth & Environm, 48 Janghak Gil, Chuncheon Si 24210, Gangwon Do, South Korea; [Kim, Jonggun] Kangwon Natl Univ, Agr & Life Sci Res Inst, 1 Gangwondaehak Gil, Chuncheon Si 24341, Gangwon Do, South Korea; [Lim, Kyoung Jae] Kangwon Natl Univ, Dept Reg Infrastruct Engn, 1 Gangwondaehak Gil, Chuncheon Si 24341, Gangwon Do, South Korea; [Choi, Jung Hyun] Ewha Omans Univ, Dept Environm Sci & Engn, 52 Ewhayeodae Gil, Seoul 03760, South Korea
- 등재 SCIE, SCOPUS
- OA유형 Green Submitted, gold, Green Published
- 발행기관 MDPI
- 발행년도 2019
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000172023
- 본문언어 영어
- Published As https://dx.doi.org/10.3390/w11071409
초록/요약
Sediment plays an important role in the water quality of a lake by acting as both a nutrient source and sink. The amount of phosphorus and nitrogen in the water depends on the internal load from the sediment as well as the external load. To estimate the effects of sediment load on the water quality of a reservoir, we applied a three-dimensional hydrodynamic and transport model based on the benthic chamber experimental results at Euiam Lake, South Korea. As shown in the sensitivity analysis results, the eutrophication period could be significantly extended by a change of phosphorus flux rates from the sediments. The increased phosphorus flux from the sediments intensifies the algal growth of Euiam Lake, which could cause serious algal bloom during spring and fall. This study provides information on nutrient concentrations in the sediment of Euiam Lake, verifies the role of the sediment as a source or sink of nutrients, and evaluates the effect of sediment release of nutrients and contaminants on water quality. This research is a useful tool in determining the effects of internal load in lakes and establishing the operation guideline for sediment management in order to maintain feasible water quality for beneficial use.
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