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Using the new contact tank, vary the coagulant dose, measure time to build a floc blanket and compare the results with theoretical floc build times based on mass conservation. Once you have developed a method to reliably build a floc blanket and have selected an appropriate coagulant dose for further research, then add floc recycle. Use a coagulant dose that has relatively poor performance so it will be easy to see if floc recycle results in an improvement in performance.
Tube Flocculator
Test the floc breakup hypothesis
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