The Influence Factors of Phenol Wastewater Treatment Using Persulfate Activated by Fe

It has become the new focus in the field of water treatment to deal with the difficult degradable organic pollutants using the transition metal and the transition metal ion. This paper examined a new activator of Fe in persulfate (K2S2O8) activation based on strong oxidizer of sulfate radicals (SO·-) for catalytic oxidation of phenol. Discuss the reaction time, activator dosing amount, K2S2O8 dosing quantity, pH value, and initial concentration of phenol in detail for the research of phenol wastewater treatment, and obtain the best operating conditions through orthogonal test. It had been verified by tests that when the reaction temperature reached 35 °C, the pH value was equal to 3, the reaction time lasted 180 min, the activator of Fe adding quantity was 200 mg/L, the K2S2O8 dosing quantity was 200 mg/L, the phenol initial concentration got to 150 mg/L, the phenol removal rate could reach 78.27%. The results showed that the activation phenol wastewater treatment technology using persulfate activated by Fe could be applied to small phenol treatment system.