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Figure 2: Standard Deviations of the Influent and Effluent Settling Turbidities from 10 consecutive experiments using a new position of the settling column (bottom).
The effluent turbidity standard deviations in both positions have a large range, and there is a trend of increasing standard deviations as the settling time increases. The influent turbidity standard deviations in both positions are generally lower than the effluent turbidity standard deviations, and maintain at a low position.