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Journal of the Korean Society of Hazard Mitigation 2011;11(6):317-324.
Published online December 31, 2011.
소양호 유역의 유출특성에 의한 유달오염부하량 산정
박수진, 백경원, 강영복, 최한규
Estimation of Delivery Pollution Load by the Runoff Characteristics of Soyang Lake Basin
Soo-Jin Park, Kyung-Won Baek, Young-Bok Kang, Han-Kuy Choi
Abstract
This study selected the upstream of Soyang Lake and investigated the flow and water quality during rainfall and non-rainfall periods in 2008 and 2009 and inquired into the changing conditions of concentration of water quality depending on runoff capacity. Water quality grades were compared, using FWMC and as a result, it was confirmed that the first and second grades during the non-rainfall period and the water condition aggravated below the third grade during the rainfall period. And as the flow gained due to a great increase in the discharge of contaminated substances during the early rainfall period, small amounts of contaminated substances occurred continuously. Also, this study suggested regression equation of pollution load depending on the flow in each drainage area through regression analysis and computed annual delivery pollution load in drainage areas, using annual rate of runoff capacity.
Key Words: Flow weight mean concentration; Drainage area; Delivery pollution load
요지
본 연구는 소양호 상류유역을 선정하여 2008년, 2009년 2년 동안 강우시와 비강우시 유량과 수질을 조사하여 유출량에 따른 수질농도가 변화하는 양상을 고찰하였다. 유량가중평균농도를 이용하여 수질등급을 비교한 결과, 비강우시 기간에 1~2등급의 수질등급을 보이다가 강우시 기간에는 3급수 이하로 수질상태가 악화되는 것을 확인하였으며, 초기 강우시에 오염물질의 유출이 크게 발생하며 유량이 증가하면서 강우에 의한 희석효과로 오염물질 배출이 작게 지속적으로 발생하였다. 또한 회귀분석을 통하여 배수구역별 유출량에 따른 오염부하량의 회귀식을 제안하였으며, 연간 유출량비를 이용하여 배수구역의 연간 유달오염부 하량을 산정하였다.
핵심용어: 유량가중평균농도; 배수구역; 유달오염부하량


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