Urban sewage and stream water in Wonju city were examined and the results were as follows: The average water quality of Wonju stream was flow 52.8m³/min, BOD 21.14ppm, COD 7.06 ppm, SS 212.4ppm, Cl⁻ 23.14ppm, O-Phosphate 1.08ppm, NH₃-N 1.08ppm, NO₂-N 2.63ppm and pH 7.48 respectively. The average water quality of urban sewage was flow 2.76m³/min, BOD 112.7ppm, COD 33.6ppm, SS 374.4ppm, Cl⁻ 46.2ppm, O-Phosphate 1.56ppm, NH₃-N 5.96ppm and NO₂-N 3.28 ppm respectively. The quality of stream water showed was 4th grade area according to environmental water quality standard. The survey showed k₁ 0.11day⁻¹, k₂ 0.29day⁻¹ and the self- purification coefficient 2.5 in average. In calculating oxygen variation in water by Streeter-Phelp s equation the zero station exhibited in down stream.
Ⅰ. 緒論
Ⅱ. 実驗対象 및 方法
Ⅲ. 結果 및 考察
Ⅳ. 結論
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