한강 본류에서 유기물 오염도 지표인 BOD와 COD에 대한 장기변동 특성
분야
자연과학 > 지질
저자
조현석 ( Hyun Seok Cho ) , 김광래 ( Kwang Rae Kim ) , 임귀철 ( Gyu Chul Lim ) , 배경석 ( Kyung Seok Bae ) , 이민환 ( Min Hwan Lee )
발행기관
한국하천호수학회(구 한국육수학회)
간행물정보
한국하천호수학회지 2012년, 제45권 제4호, 474~481페이지(총8페이지)
파일형식
08801944.pdf [무료 PDF 뷰어 다운로드]
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    영문초록
    This study was performed to investigate the degree of long-term pollution at the mainstream of the Han River by comparing the concentration of BOD and COD from 1975 to 2011. The long-term annual average BOD and COD concentration at the mainstream of the Han River showed an increasing trend as it flowed downstream from Paldang Dam to Gayang. The concentration of BOD (r2=0.646) and COD (r2=0.260) showed a consistent decreasing trend for 37 years. In the case of Paldang Dam, BOD has maintained a decreasing trend, whereas the COD value showed an increasing trend after the 1990s. Therefore, a control of non-biodegradable materials in areas around Paldang Dam is required. The result of the seasonal variations of BOD and COD is as follows: spring¤winter¤summer and fall (p□0.001). The time series analysis revealed a strong correlation for every 12-month period. Also, the amount of water discharge at Paldang Dam has to be systematically controlled because the amount of water discharge from the dam influences the water quality at the mainstream of the Han River.
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