Bench-Scale Evaluation of Coagulants for Low Turbidity Water

摘要

Because the conventional jar test is ineffective for determining optimal coagulant dosages for low turbidity waters, utilities employing rapid-rate filtration of such waters may fail to maximize treatment efficiency for lack of a simple bench-scale procedure for determining coagulant dosage. Using terms useful to water treatment plant operators, the article describes a simple bench-scale test for determining coagulant dosages for raw water supplies with turbidity levels of 1 ntu or less. The report covers the protocol for the jar-filtration test and documentation on test validity. (Copyright (c) Journal AWWA 1988.)