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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).
Figure 3: Time Averaged data over 60s of the Effluent Settling Turbidities from 10 consecutive experiments using a 25ft Flocculator and turbidimeter position at the top.
Figure 4:Time Averaged data over 60s of the Effluent Settling Turbidities from 10 consecutive experiments using a 25ft Flocculator and turbidimeter position at the bottom.
Figure 5: Time Averaged data over 60s of the Effluent Settling Turbidities from 10 consecutive experiments using a 50ft Flocculator and turbidimeter position at the top.
Discussion
The effluent turbidity standard deviations in both positions have a large range(Figure 1 and 2), and there is a trend of increasing standard deviations as the settling state time increases. The max standard deviation for the effluent turbidity when the turbidimeter was in its standard position (top) is 12.4. The max standard deviation for the effluent turbidity when the turbidimeter was in its new position (bottom) is 14.2. The influent turbidity standard deviations in both positions are generally lower than the effluent turbidity standard deviations, and maintain at low values.
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