Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Improvement of tap water corrosivity by lime and carbon dioxide

액상소석회와 이산화탄소를 이용한 수돗물 부식성 개선

  • Kim, Jinkeun (Dept. of Environmental Engineering, Jeju National University) ;
  • Lee, Junghoon (Dept. of Environmental Engineering, Jeju National University)
  • Received : 2014.04.15
  • Accepted : 2014.08.01
  • Published : 2014.12.15
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Abstract

16 water treatment plants(WTPs) in Jeju province were investigated to evaluate the corrosivity of tap water. In addition, the impacts of lime and carbon dioxide on LI changes at ES WTP were analyzed. The average of LI in Jeju tap was -1.78 which was similar to that of in-land multi-regional WTPs. The recommended process to improve LI of ES WTP which has high corrosivity(i.e., LI = -2.61) was to combine lime and carbon dioxide with the dosages of 20 mg/L and 5 mg/L respectively to meet LI of -1.0 ~ 0. pH was confirmed to be a major water quality parameter that determined LI based on the correlation results among LI and water quality parameters. Precaution on turbidity increase by lime addition should given to minimize particle breakthrough in the distribution system. Turbidity increase can be controlled by the addition of lime prior to filters.

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References

  1. AWWA (1986) Corrosion control for operators.
  2. AWWARF and VGW-TZW (1996) Internal corrosion of water distribution systems, AWWARF.
  3. Cheong, W. Kim, J. Park, D. Kim, S. Jeong, S (2011) A study on the corrosion control of tap water by lime and carbon dioxide. J. of KSWW 25(2) 193-199.
  4. Jejuspecial self-governing province, Division of water supply (2014) www.jejuwater.go.kr.
  5. Kawamura, S. (2000) Integrated Design and Operation of Water Treatment Facilities. John Wiley & Sons, Inc., New York.
  6. Kim, J. Kim, Y (2011) Characteristics and improvement of tap water corrosivity in Korea. J. of Korean Society of water and wastewater(KSWW). 25(5) 731-739.
  7. Korea Water Works Association(KWWA) (2010) Standards for water supply facilities.
  8. K-water (2010) Internal report.
  9. Mays, L.W (2000) Water Distribution Handbook. Mc-Graw Hill, New York.
  10. Ministr y of Environment(MOE) (2014) www.me.go.kr.
  11. Ministry of Health, Labor and Welfare(MHLW) in Japan (2014) www.mhlw.go.jp.
  12. Sarin, P. Snoeyink, V.L., Bebee, J., Kriven, W.M., and Clement, J.A. (2001) Physico-chemical characteristics of corrosion scales in old iron pipes, Wat. Res. 35(12) pp. 2961-2969. https://doi.org/10.1016/S0043-1354(00)00591-1
  13. Schock, M. R. (1999) Internal corrosion and deposition control in Water Quality and Control 5th Ed. Mc-Graw Hill, New York.
  14. Tokyo metropolitan government(TMG), Bureau of waterworks(2014) www.waterworks.metro.tokyo.jp.
  15. USEPA (2014) water.epa.gov.

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  1. Implications of the corrosion index for the quality of flowing tap water and the effects of added alkalinity on corrosion control vol.31, pp.3, 2017, https://doi.org/10.1111/wej.12260