Corrosion Countermeasure for Building Equipment in Water Piping System

DOI

Bibliographic Information

Other Title
  • 建築設備用水配管システムの腐食対策
  • Part 1-Corrosion Prevention Nature for Carbon Steel in Tap Waters Treated with Anion Exchange Resin
  • 第1報−アニオン交換処理した水道水による炭素鋼の腐食抑制作用

Abstract

<p>Tap waters contain both the corrosive anions like SO42－，Cl－ and corrosion inhibitive ions such as HCO3－. An anion exchange resin can replace SO42－ and Cl－ with HCO3－. Thus， the treatment of tap waters by the anion exchange resin， which regenerated with NaHCO3， could produce the corrosion preventive water. This paper aimed at verifying the above idea. The results were as follows; 1) Corrosion tests of carbon steel in the tap waters collected in three areas in Japan were made. At the same time, the corrosion was tested in the waters treated with the anion exchange resin. 2) Corrosion in the treated waters did not appear for 720 hrs. 3) Corrosion potential in the treated water moved rapidly to the positive side. The corrosion potential in the untreated water migrated to the negative side. 4) The corrosion prevention mechanism appeared to result from the formation of passive layer on carbon steel. The authors recommend the application of this technique from the initial operating stages of water piping system. Elongation of piping system was highly expected. </p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390575805129463040
  • DOI
    10.18948/shase.46.297_57
  • ISSN
    24240486
    0385275X
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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