K市 管未 水道꼭지의 水質 特性에 關한 硏究 = A Study on the Water Quality of Terminal Tap in K City

다국어 초록 (Multilingual Abstract)

The purpose of this study was water quality of water treatment plants and distribution and service pipes examine and comparison, remain effect of disinfectant examine, used quality mark out prediction technique according to the distance apart from water treatment plants as intend to contributed water management.
1. The Langelier Saturation Index which is used to measure corrosion is influenced by the pH of the water. pH is at 6.3∼7.3 at the terminal place and in summer there is minimal pipe line corrosion in K city.
2. The shorter the distance from the water treatment plant to the tap the free chlorine residual concentration is only slightly deminished, but as the as the distance from source to tap increases the free chlorine residual concentration in the water decreases. Free chlorine residual change the 1st reaction, the 1st reaction was C = 0.70e (-0.105L).
3. The equation of 1st reaction law for color was C= 1.636e (0.008L), 1st reaction law for turbidity was C = 0.57e (0.050L).
4. The optimum distance for free chlorine residual concentration of 0.2 ㎎/L is about 15∼16km from water treatment p1ant(or distribution reservoir). Therefore, when the terminal place is 20∼25km the injection of free chlorine residual as the concentration of 0.3∼0.5 ㎎/L from water treatment plants(or distribution reservoir). The high free chlorine residual concentration avoid inject, in result pipe line corrosion and THM's was potential of dissolved.