10.4122/1.1000001763
Gil, K.-I.
K.-I.
Gil
Kang, J.
J.
Kang
Yoon, J.
J.
Yoon
Cho, G.
G.
Cho
Kim, L.-H.
L.-H.
Kim
Sediment characteristics and its impacts to water column in Han-river, Seoul, Korea
DTU Library, Technical University of Denmark (DTU)
2005
Conference presentation
Sediment
Han-river
nonpoint pollution
total maximum daily load
dredging
Seoul National University Of Technology, Dept. Of Civil Engr.
Dept. Of Civil Engr.
Seoul National University Of Technology
University Of California, Dept. Of Civil
Dept. Of Civil
University Of California
Korea University, Dept. Of Engr. System Engr.
Dept. Of Engr. System Engr.
Korea University
Science, Korea Advanced Institute Of
Korea Advanced Institute Of
Science
Kongju National University, Dept. Of Civil
Dept. Of Civil
Kongju National University
2005
en
10.4122/1.1000001764
text/xml
ABSTRACT Various pollutants may be adsorbed to the sediments accumulated on the bottom of rivers or lakes. These sediments may accumulate over long periods and can act as new pollutant sources to the overlying water many years after the water quality has improved. It is the reason that these sediments are classified as one of nonpoint source pollution. Nonpoint source pollution remains a major cause of water degradation in Han-river, Seoul, Korea. Recently, the ministry of Environment, Korea, developed the program of total maximum daily load for Han-river to protect the water bodies from possible pollutants. The Han-river, the largest river in Korea, is the primary drinking water source for the 20 million people that live in Seoul metropolitan areas. The sediments in the river are highly polluted due to inputs from upstream tributaries as well as partially treated municipal wastewaters. To characterize concentrations of the sediments, the disturbed and undisturbed sediment samples were periodically collected at 8 points during 8 months. It was analyzed for pH, water content, total solids, ignition loss, TKN, TP and TCOD. This paper will summarize the characteristics of sediments with time and locations, and the effects of dredging on concentration changes in sediment.