earticle

영어

As the clean water resources in Ulsan Metropolitan City was developed for industrial water supplyin the beginning, large amount of water is being supplied currently by Nakdong River and Daegok dam constructed in 2003 for the municipality and industrial expansion. Presently, Ulsan Metropolitan City consumes 331,000 m3/day of water for municipal purposes, 803,000 m3/day of water for industrial water supply comprising a total of 1,134,000 m3/day. But the capacity of water supply facilitiesis 1,719.9 m3/day. Thus water quantity is quite enough for Ulsan Metropolitan City. However, Ulsan Metropolitan City relies on Nakdong River for 70.8% of the water demand. As Daeam Dam was constructed as a storage reservoir for Nakdong River to supply industrial water of 500,000 m3/day after mixing with Dam water of 50,000 m3 /day, 60,000 m3/day of mixed
water is being used asdrinking water source. Though the water is treated by advanced water treatment methods, much more is to be considered to secure clean water resources. This study investigates the feasibility of changing water supply system for efficient use of water resources regional clean water resource for drinking water and Nakdong river for industrial use for ustainable water management in Ulsan Metropolitan City. The study reveals that it may be possible to secure drinking water resource until the year 2016 without the construction of any additional dam and Nakdong river intake, if the current water consumption rate is maintained at 320 L/cap/day and Daeam Dam is used for drinking water resource by changing industrial water supply system.