Effect Analysis Regarding Different Scenarios to Improve Water Quality of the Lake Paldang Basin in Korea

• Published in: KSCE journal of civil engineering Vol. 22; no. 9; pp. 3246 - 3253
• Main Authors: Oh, Hye-Cheol, Shimizu, Yoshihisa, Kim, Seog-Ku
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society of Civil Engineers 01.09.2018; Springer Nature B.V; 대한토목학회
• Subjects: Agricultural land; Agricultural management; Civil Engineering; Computer simulation; Contaminants; Data base management systems; Engineering; Environmental Engineering; Environmental management; Environmental monitoring; Flow rates; Flow velocity; Geotechnical Engineering & Applied Earth Sciences; Industrial Pollution Prevention; Lake basins; Lakes; Land pollution; Livestock; Marine environment; Monitoring systems; Phosphorus; Policies; Pollution control; Quality control; Quality improvement; Quality management; Reduction; Solid suspensions; Support systems; Suspended particulate matter; Suspended solids; Water pollution; Water quality; Water quality management; 토목공학; GIS; SWAT model; integrated lake basin management; lake paldang basin; basin environment database
• ISSN: 1226-7988; 1976-3808
• DOI: 10.1007/s12205-017-1305-3

The object of this research is to analyze the water quality improvement of Lake Paldang by implementing Integrated Lake Basin Management (ILBM). To establish ILBM, the basin environment database was built as well as water environment management support system for monitoring present conditions, and predicting changes in basin environment. The major contaminants in Lake Paldang Basin are from domestic pollution, agricultural land, and livestock. Scenarios for reducing contaminants were targeting the increase percentage of sewered population, agricultural and livestock contaminants reduction to analyze the water quality improvement effects. This study applied the SWAT model to Lake Paldang Basin using the basin environment database to improve the water quality of Lake Paldang in Korea. The results of calibration and validation of flow rate, Suspended Solids (SS), Total Nitrogen (TN) and Total Phosphorus (TP) showed that the measurement values and simulation values turned out to be similar, and that it is possible to apply the SWAT model to Lake Paldang Basin. The reduction efficiency of SS by scenario was 11-45%, TN 8-37%, and TP 7-35% and this shows that water quality was significantly improved prior to application. Therefore, to improve the water quality of Lake Paldang, it is recommended to implement the ILBM which is considered to play an important role in making water quality management policy in Korea.