Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
권호 표지

The Effects of Polyphosphate Corrosion Inhibitor and Lime Water to Reduce Red Water for Carbon Steel

탄소강의 녹물저감에 대한 인산염부식억제제와 석회수 효과 연구

  • 박영복 (서울특별시 상수도연구소 배급수연구과) ;
  • 공성호 (한양대학교 화학공학과)
  • Received : 2005.02.21
  • Accepted : 2005.04.12
  • Published : 2005.04.15
Download PDF
⟨ Previous Next ⟩

Abstract

The main purpose of this study was to investigate the red water reducing effects of phosphate based inhibitor when it was applied to water distribution system. The effects of pH, alkalinity, calcium concentration in the reduction of the red water also studied. The most finished water in Korea showed relatively high corrosiveness and was required to introduce some types of corrosion reducing methods such as addition of alkalinity. The precipitation of $CaCO_3$ by addition of $Ca(OH)_2$ formed porous film on the surface of the carbon steel pipes and was displaced easily from the surface of the pipes; on the other hand, addition of zinc phosphate (ZOP) formed reliable film on the surface and reduced iron release and color. Although the main function of ZOP was to suppress the release of Pb and Cu, it also reduced iron concentration released from water distribution pipes.

Keywords

Acknowledgement

Supported by : 서울특별시 상수도연구소

References

  1. 박영복, 임영룡, 이규성, 박수환, 수돗물의 부식성 포화지수 제어인자에 관한 연구, 상수도연구검사기관협의회, 2004
  2. 한국수자원공사, 정수장수질정보 2004 12 from http://www.kowaco.or.kr
  3. 환경부, 수처리제의 기준과 규격 및 표시기준(환경부 고시 제 187호), p. 52 (2002)
  4. AWWA, B502-88 (1989), Standard for Sodium Polyphosphate, Glassy(Sodium hexametaphosphate), American Water Works Association, Denver
  5. AWWA, B502-89 (1989), Standard for Sodium Tripolyphosphate, American Water Works Association, Denver
  6. Eaton, A.D. Clesceri, L.S. and Greenberg, A.E. (1995) Standard Methods for the Examination of Water and Wastewater, 19th, ed., 4-111
  7. Edwards, M. (2000) Phosphate inhibitors and red water in stagnant iron pipes, J. Environ. Engrg., 126, pp. 1096-1102 https://doi.org/10.1061/(ASCE)0733-9372(2000)126:12(1096)
  8. Edwards, M. (2002) The Emerging Crisis in Water, Virginia Tech., p.9, Virginia
  9. EES(Economic and Engineering Services)(1990), Lead control strategies. AWWARF, Denver
  10. Hach Co., DR/2010(1997) Spectrophotometer Instrument Manual, Loveland, Colo
  11. Henry, C.R (1950)Prevention of settlement of iron, J. AWWA, 42(9), pp.887-
  12. Klueh, K.G. and Robinson, R.B. (1988) Sequestration of iron in groundwater by polyphosphates. J. Envir. Engrg., 114(5), pp.1192-1199 https://doi.org/10.1061/(ASCE)0733-9372(1988)114:5(1192)
  13. Lytle, D. and Snoeyink, V. (2002) Effect of ortho-and polyphosphates on the properties of iron particle and suspensions, J. AWWA, 94(10), pp.87-99
  14. McNeil, L.S. and Edwards, M. (2001) Iron pipe corrosion in distribution systems, Jour. AWWA, 93(7), pp.88-100
  15. McNeill, L.S. and Edwards, M. (2002) Phosphate inhibitor use at US utilities, J. AWWA, 94(7), pp.57-63
  16. USA EPA (2004), Deskrop corrosion control study, 3-6, PA
  17. Vik, EA Ryder, RA Wagner, I. and Ferguson, J.F, (1996) Internal Corrosion of Water distribution Systems, M.K. Kozyra, 2nd, ed. p.389, AWWARF, Denver