• Title/Summary/Keyword: Environment Pollution

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EC or TDS as a Water Pollution Criteria in Water Education Program (물환경 체험 및 탐구 활동에서 수질오염지표로서 전기전도도(EC) 혹은 총용존고형물질(TDS)의 활용에 대한 고찰)

  • Ahn, Samyoung
    • Journal of Environmental Science International
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    • v.31 no.4
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    • pp.341-356
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    • 2022

  • Electrical Conductivity (EC) or Total Dissolved Solids (TDS) has been often used to evaluate the water quality in some water education program for children and youth. This study attempted to find out whether EC (or TDS) can be used as a water pollution criteria in water education program. To clarify it, we used the water analysis data of July 2019 and January 2020 from Water Environment Information System. Data from 332 points in Han-river were used to investigate correlation between the parameters, such as BOD, COD, TN, TP vs EC. Correlation(r) for all data of BOD vs. EC was 0.347 for July 2019 and 0.483 for January 2020. No correlation was observed for BOD Ia and BOD Ib for July 2019 (r=-0.041, -0.030, respectively) and BOD Ia for January 2020 (r=0.041). Better correlation for all data of COD vs. EC was obtained (r=0.543 for July 2019 and r=0.610 for January 2020). However, no correlation was observed for COD Ia for January 2020. High vlaue of EC or TDS does not always mean water pollution, especially for clean water environment. Thus, EC (or TDS) alone can not be used as a water pollution criteria.

  • https://doi.org/10.5322/JESI.2022.31.4.341 인용 PDF KSCI

Development of Prediction Techniques of Water Pollution Sources for the Management of Total Maximum Daily Load - Population Prediction of Pollution Sources from Human Living - (수질오염총량관리를 위한 오염원 예측기법 개발 - 생활계 오염원 인구 예측 -)

  • Park, Jundae;Park, Juhyun;Lee, Suwoong;Jeong, Donghwan;Rhew, Doughee
    • Journal of Korean Society on Water Environment
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    • v.23 no.4
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    • pp.561-567
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    • 2007

  • It is necessary to predict future water pollution sources in the establishment of Total Maximum Daily Load (TMDL) plan for watershed management. There are some difficulties and limits in estimating the pollution sources accurately since the prediction method is not firmly established. This study reviewed the existing methods of prediction and developed a technique characteristics. The characteristics were obtained by analyzing the change pattern of pollution sources by region and incorporated in the technique. A distinctive feature of the technique is to eliminate the influences of land use change included in the pollution source data of a region. The technique has been applied and tested. The test result showed the improvement on the prediction accuracy. A computer program was also developed for the easy application of the technique.

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