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DOI : ,    Vol.7, No.3, 25 ~ 35, 1999
Title
The Effect of Water Quality Improvement with the Mass Loading Regulation in the Nakdong Rlver Basin
강용태Yong Tae Kang
Abstract
The Nakdong river being used as drinking water sources for Pusan city has contaminated due to inflow of wastewater from the tributaries. To stove these problems this study is to predict the characteristics of Nakdong river according to the variations of the mass loading such as water quantity and pollutants concentration by QUAL2E. The results of this study were summarized as follow: For the effect of water quality improvement with the pollutant reduction of the tributaries, it was possible to improve the water quality criteria as BOD by reducing the pollutant loading up to 90% for Kumho river and 50% for Nam river and Miryang river in case of a graded reduction for the tributaries, respectively. For the effect of diluting the contaminated river water due to increase of water quantity by dam construction, the increase of water quantity of 15.85CMS in Nam river basin reduced 15∼20% of pollutant loading in the lower reaches. On the other hand, in order to improve the river water quality to be second grade in lake water quality as COD, the pollutant loading from the tributaries should be reduced more than 90% for Kumho river and 50% for Nam river and Miryang river with the inflow of 15.85CMS into the Nam river.
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