부하지속곡선을 이용한 중랑천의 유량 조건별 수질특성 평가

• 영문명: Assessment of the Water Quality of Jungnang Stream by Flow Conditions Using Load Duration Curve
• 발행기관: 한국환경보건학회
• 저자명: 최경완(Kyungwan Choi) 신경용(Kyungyong Shin) 이형진(Hyungjin Lee) 전상호(Sangho Jun)
• 간행물 정보: 『1. 한국환경보건학회지』제38권 제5호, 438~447쪽, 전체 10쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2012.10.30

영문 초록

Objective: The objective of this study was to suggest a method through which load duration curve was used to assess the achievement of water quality targets in accordance with the criteria for pollutant load depending on flow rate variation. Methods: The stage-discharge curve and flow duration curve of Jungnang Stream were deduced. Using water quality targets and measurement of the stream, the flow duration curve was also drawn. Based on these, the feasibility of achievement of water quality targets in respect to flow rate was assessed. Results: In terms of the load duration curve of the stream, it was observed that excess of criteria for concentrations of BOD5, CODMn and SS frequently occurred. On the other hand, when the flow rate was low, the concentrations of T-N and T-P exceeded the criteria. Conclusions: Through the load duration curve, the overall water quality of Jungnang Stream was understood. When the flow rate is high, management of point source of BOD5, CODMn and SS is needed to achieve water quality targets for Jungnang Stream. On the other hand, when the flow rate is low, the management of non-point source T-N and T-P is necessary to attain the water quality goal.

키워드

jungnang stream load duration curve pollutant load water quality