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정장표 慶星大學校 1988 論文集 Vol.9 No.1
Industrial growth and urban gravitation of the population, etc., have seriously deteriorated the air quality. And so, it is necesary to use the air quality dispersion models for the control of air pollutants and to predict the situation of air pollutant distributions. Therefore, in this study, TCM and Valley models were applied to two different areas, and examined their difterences and relations. And, on the bases of these results, the suitability of two models was studied. Especially, in case of Valley model, this study was carried out to clarify the effect by the application of terrain factors. The conclusions obtained from this study were as follows. 1) Valley1 model was the most predictable, when these two models were applied to the areas where terrain effect was not negligible. 2) Being judged from the correlation coefficient value and the codfficient of regression line, the order of prediction abliity was as follows, Valley1 > TCM >Valley2 3) It was obtained that the selection of receptor sites is very important, because the prediction ability of models is able to be determined by it.
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정장표,김좌관 慶星大學校 1989 論文集 Vol.10 No.2
Ⅰ. Introduction In Korea, recently, eutriphication has been gradually accelerated due to the duscharge of nutrients aby municipal sources, as well as agriculturalrun-off. The domestic studies on the model among trophic prediction methods are at the initial satte. This study is the results from the application oif the predict the trophic satte using Seven Empirical Models, TSI, the Theory of Eutrophication model, etc. Ⅱ. Methods to evaluate Eutorphication 1. Seven empirical phosphorous models These seven models assume that phosphorous is the limiting nutrient for primary production in the lake being analyzed. These aeven models are as follows. ????? 4. the uncertainty theory of model (1) error analysis using vollenweider's model (2) error analysis using phosphorous discharge coefficent Ⅲ. Application and Conclusion The trophic state of the Nakdong estuary reservoir has the following results. ????? Consequently, the Nakdong estuary reservoir is at the europhic state. Therefore to restore and maintain reservoir in a desired the total loads must be reduced. Reduction of phosphorous input can be the following measures. 1. Phosphorous removal from wastwater treatemnt plant effluents. 2. Construction of Jangrim treatment plant. 3. Predging of Sediments. 4. Hypolimnetic aeration and destratification.
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