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Assessment of Pollutant Loads in the Dongjin River
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 Title & Authors
Assessment of Pollutant Loads in the Dongjin River
Lee, Kyeong-Bo; Kim, Jong-Cheon; Kim, Jong-Gu; Lee, Deog-Bae; Park, Chan-Won; Kim, Jae-Duk;
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This study was conducted to evaluate the influence of pollutant loads on the water quality in the Dongjin River area from January 2003 to December 2004. The average value of BOD and T-N showed the highest peak in Yongho, Dukcheon watershed among Dongjin River. Concentrations of BOD, T-N and T-P in Jeongeup watershed were 2.29 mg , 4.40 mg and 0.27 mg , respectively. Concentration of BOD in Chilbo was 1.19 mg which would be in the grade I according to water quality criteria by Ministry of Environment. The BOD level in Wonpeung and Sinpeung watershed ranged from 4.06 to 7.35 mg . The T-N effluent loads of non-point pollutants were high in Wonpeung, Gobu, Yongho Dukcheon, Jeongeup and Sinpeung watershed in order. The major sources of BOD, T-N and T-P effluent loads were Livestock. The T-P effluent load of non-point pollutant was 68 kg in Wonpeung, 58 kg in Yongho Dukcheon and 45 kg Jeongeup watershed. The delivered loads of BOD was high in Gobucheon, while both T-N and T-P were high in Yongho Dukcheon. The delivery ratio of BOD and T-N at dry season was below 100% in all watershed of Dongjin River. The delivery ratio of T-N at raining season was high in Yongho Dukcheon and Chilbo watershed
Dongjin River;Water quality;Pollutant loads;
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