영산강 수계 TOC, COD/BOD 특성
The Characteristics of TOC, COD/BOD on Youngsan River Basin
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The samples was collected once a month for eleven months in the year of 2013 from the different locationsof the Youngsan River basin. The organic material BOD and COD/TOC was measured from the six to ninedifferent sites of water samples of lake water, branch stream and main stream of the river, and discharged waterfrom public sewage treatment plants. The purpose of this research was to monitor the changes of those characteristicsand distribution ratios. In the lake average COD/TOC was as high as 1.95 ± 0.08, and coefficientof correlation of TOC about COD was also as high as 0.894. This result shows that the environmental standardsfor TOC are in need of enhancement. In the branch and main stream of the river water average concentrationof COD was high and the average of COD/TOC was also high in both the branch stream (2.07 ± 0.08) andthe main stream (2.28 ± 0.13). This result shows that a necessary step of management was needed against nondegradableorganic materials in the Youngsan River. In the discharged water from public sewage treatmentplants the average of COD/TOC was as high as 1.84 ± 0.09, and coefficient of correlation of TOC about CODwas also as high as 0.789. Thus, the current COD standard can apply to TOC standard. We can start with thehalf of the existing COD reference value of discharged water in public sewage treatment plant as TOC referencevalue, which can be used as an alternative indicator of COD.
Abstract
The samples was collected once a month for eleven months in the year of 2013 from the different locationsof the Youngsan River basin. The organic material BOD and COD/TOC was measured from the six to ninedifferent sites of water samples of lake water, branch stream and main stream of the river, and discharged waterfrom public sewage treatment plants. The purpose of this research was to monitor the changes of those characteristicsand distribution ratios. In the lake average COD/TOC was as high as 1.95 ± 0.08, and coefficientof correlation of TOC about COD was also as high as 0.894. This result shows that the environmental standardsfor TOC are in need of enhancement. In the branch and main stream of the river water average concentrationof COD was high and the average of COD/TOC was also high in both the branch stream (2.07 ± 0.08) andthe main stream (2.28 ± 0.13). This result shows that a necessary step of management was needed against nondegradableorganic materials in the Youngsan River. In the discharged water from public sewage treatmentplants the average of COD/TOC was as high as 1.84 ± 0.09, and coefficient of correlation of TOC about CODwas also as high as 0.789. Thus, the current COD standard can apply to TOC standard. We can start with thehalf of the existing COD reference value of discharged water in public sewage treatment plant as TOC referencevalue, which can be used as an alternative indicator of COD.
참고문헌 (28)
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