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

Technical Report · Thu Jan 01 00:00:00 EST 1998

DOI:https://doi.org/10.2172/641119· OSTI ID:641119

Krauter, P W; Harrar, J E; Orloff, S P

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.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE Assistant Secretary for Environment, Safety, and Health, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 641119
• Report Number(s): UCRL-ID-129050; ON: DE98057452; BR: EW2010302; CNN: W-7405-Eng-48
• Resource Relation: Other Information: PBD: 1 Jan 1998
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CARBON DIOXIDE
WATER
CALCIUM CARBONATES
VOLATILE MATTER
ORGANIC COMPOUNDS
REMOVAL
STRIPPING
AIR