호소의 난분해 물질 축적 영향요인의 평가 : Evaluation of Affecting Factors for Refractory Organics Accumulated in the Lakes
Evaluation of Affecting Factors for Refractory Organics Accumulated in the Lakes
- 주제(키워드) Biomass residues , Diffuse sources , Lake , Refractory organics , Reservoir , Biomass residues , Diffuse sources , Lake , Refractory organics , Reservoir
- 발행기관 한국물환경학회
- 발행년도 2006
- 총서유형 Journal
- UCI G704-000646.2006.22.4.005
- KCI ID ART001018951
초록/요약
Long-term monitoring results of water qualities at major lakes in Korea showed COD (chemical oxygen demand) concentrations have been increasing while BOD (biochemical oxygen demand) concentrations have been decreasing during last decades. This was mainly due to refractory organic matters have been accumulated in the water body. In this study, the possible causes of COD concentration increase were evaluated. From the statistics, it can be understood that potent pollutant sources including fertilizer consumption, population, livestock, and carbon uptake have increased. Leaching tests were carried out with soils and biomasses sampled at agricultural-forestry area. From the leaching experiments, leachate qualities as a ratio of CODCr/BOD were in the range of 2.5-5.0, implying that NOM (natural organic matters) discharged from the forestry area was mainly responsible for the COD accumulation. It can be understood from this research that diffuse pollutants from forestry areas should be controlled properly to reduce COD accumulation in the lakes.
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