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DOI : ,    Vol.21, No.2, 101 ~ 108, 2013
Title
Evaluation of water quality parameters by pH and alkalinity adjustment for corrosion control in drinking water distribution pipes
우달식 Dal Sik Woo , 신성훈 Sung Hun Sin , 이호선 Ho Sun Lee , 황병기 Bung Gi Hwang , 채수권 Soo Kwen Chae
Abstract
The purpose of this study was to evaluate the water quality parameters by the pH and alkalinity adjustment for corrosion for corrosion control in water pipes. Ca(OH)2 used to adjust the pH was somewhat effective than NaOH for corrosion control in water pipes. The turbidity increase of alkaline chemicals was Ca(OH)2 >NaHCO3>Na2OH3>NaOH. The corrosion rate and iron concentration eluted in the carbon steel pipe coupons were decreased with increasing alkalinity. In conclusion, the alkaline chemicals to control of water pipes should be selected by considering maintenance, price economy and safety.
Key Words
pH and alkalinity adjustment, corrosion control, drinking water distributing pipes
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