DEVELOPMENT OF SETTLING FLUX CURVES USING SVI - AN ADDENDUM

An earlier paper by the authors (1988) introduced a correlation betwee n the Vesilind settling parameters, V-o and k, and SVI performed in a stirred, 1-L graduated cylinder even though SVIs also were determined in more commonly used containers such as an unstirred, 1-L graduated c ylinder and an unstirred, 2-L Mallory settlometer. Only the stirred gr aduated cylinder relationship was given because stirring increases the precision and decreases the variability of the SVI test, and Standard Methods (1975) has included stirring in the SVI test since 1975. None theless, because the SVI test continues to be performed in unstirred c ontainers, the correlations for the other SVI test methods measured du ring the study are presented herein so that they can be used by the wa stewater treatment plant operations community.