Sr = gas quantity released, mg/l
Modifying Equation 7.18(2) to account for the gas solution and release efficiency of the pressurization process yields the following:
f = pressurization system gas dissolving and release efficiency, fraction
Conventional pressurization systems usually attain 50% gas dissolving efficiency, whereas packed- or mixed-retention tank designs produce up to 90% efficiency.
An additional correction in gas solubility may be required when gases are dissolved in wastewater with a high-dissolved-solids content. Gas solubility reductions of as much as 20% from that listed in Table 7.18.1 have been observed.
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