preparation and evaluation of potassium Ferrate as an oxidant and Coagulant for potable water treatment

摘要

potassium ferrate was prepared using a new method, and its disinfection/coagulation performance for wa- ter treatment has been evaluated. The study results demonstrated that ferrate could act as a dual-function chemical reagent (i.e., oxidant and coagulant) for drinking-water treatment, and performs better than fer- ric sulphate at lower doses for treating upland colored water. The ferrate can effectively remove natural organic matter (as UV_254) and turbidity, and kills total coliforms (100/100) at very low doses.