Effect of CO{sub 2} air mixtures on the pH of air-stripped water at Treatment Facility D

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Description

A small-scale model of the air stripping tanks at TFD was constructed and tested to determine the effect of carbon dioxide additions, to the stripper air, on system water pH. The objective was to determine whether this technique could be used to control and minimize CaCO{sub 3} scale formation. It was found that a concentration of 0.7 vol. % CO{sub 2} is required to maintain the water at its original, influent pH value of 7.4, but lower concentrations may be effective in controlling scale. There is also a possibility of reducing CO{sub 2} consumption by recycling the CO{sub 2}-rich air. ... continued below

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14 p.

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Krauter, P.W.; Harrar, J.E. & Orloff, S.P. January 1, 1998.

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Description

A small-scale model of the air stripping tanks at TFD was constructed and tested to determine the effect of carbon dioxide additions, to the stripper air, on system water pH. The objective was to determine whether this technique could be used to control and minimize CaCO{sub 3} scale formation. It was found that a concentration of 0.7 vol. % CO{sub 2} is required to maintain the water at its original, influent pH value of 7.4, but lower concentrations may be effective in controlling scale. There is also a possibility of reducing CO{sub 2} consumption by recycling the CO{sub 2}-rich air. The use of CO{sub 2} injection at Site 300 water treatment is reviewed.

Physical Description

14 p.

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OSTI as DE98057452

Other: FDE: PDF; PL:

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  • Other Information: PBD: 1 Jan 1998

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  • Other: DE98057452
  • Report No.: UCRL-ID--129050
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/641119 | External Link
  • Office of Scientific & Technical Information Report Number: 641119
  • Archival Resource Key: ark:/67531/metadc698759

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  • January 1, 1998

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • April 10, 2017, 1:39 p.m.

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Krauter, P.W.; Harrar, J.E. & Orloff, S.P. Effect of CO{sub 2} air mixtures on the pH of air-stripped water at Treatment Facility D, report, January 1, 1998; California. (digital.library.unt.edu/ark:/67531/metadc698759/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.