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Based on the results of this experiment, and alum dose of 35 mg/L is not a significant underdose (The system preformed better. This cannot can not be considered an overdose)under dose. The system performed above expectations (compared to what. Please cite), , the effluent turbidity should have been higher than the effluent turbidity at the alum dose of 45 mg/L so we tested the system with an alum dose of 15 mg/L to see how the tube settler performs with a more extreme underdose.
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