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

Effect of CO{sub 2} air mixtures on the pH of air-stripped water at Treatment Facility D 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.
Authors: ; ;
Publication Date:
OSTI Identifier:641119
Report Number(s):UCRL-ID--129050
ON: DE98057452; BR: EW2010302; CNN: W-7405-Eng-48
DOE Contract Number:W-7405-ENG-48
Resource Type:Technical Report
Data Type:
Resource Relation:Other Information: PBD: 1 Jan 1998
Research Org:Lawrence Livermore National Lab., CA (United States)
Sponsoring Org:USDOE Assistant Secretary for Environment, Safety, and Health, Washington, DC (United States)
Country of Publication:United States
Language:English
Subject: 54 ENVIRONMENTAL SCIENCES; CARBON DIOXIDE; WATER; CALCIUM CARBONATES; VOLATILE MATTER; ORGANIC COMPOUNDS; REMOVAL; STRIPPING; AIR