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Characterization of sewage sludge from different treatment systems
The Vacuum Filtration and the Capillary Suction Time tests can be used for coagulant dosage evaluation. The tests indicate that there is an optimal range of synthetic polymer dosage to ensure the best performance of the coagulated sludge compared to the raw sludge. Tests with FeCl3 indicate that increasing the coagulant dose decreases time for sludge filtration.