Analysis of the Water Quality Improvement in Urban Stream Using MIKE 21 FM

Domestic urban streams face insufficient base flow and consequently become dry in drought season, vulnerable to water quality deterioration ecological impairment, due contaminants introduced from the pollutants. Many efforts are being made improve natural by actively enforcing restoration projects of streams. Gulpocheon is a national stream flowing through Incheon-si Gimpo-si. As March 2019, reclaimed wastewater or ozone-processed Gulpo treated sewage has formed upper part Gulpocheon. This study aimed analyze improvement before after supplying collecting data target area. Before providing flow, was analyzed using two-dimensional numerical analysis model, i.e., MIKE 21 FM. The one year compared, with focus on DO, BOD, TN, TP; they used as standards for water. concentration DO at all spots increased average. TP parameters decreased, indicating improvement. In addition, accurate assessment possible FM model simulation analysis.