Treatment of Phenol Wastewater with Modified Coal Fly Ash-Fenton Reagent

摘要

Autonomous coal fly ash modified by vitriol (H_2SO_4) was used to treat Phenol Waste Water. The treatment influences were determined by single-factor experiment and the prioritizing importance and optimizing combination of the influences were studied using orthogonal experiment. We found that the prioritizing importance of the influencing factors was as follow: dosage of ferrous sulfate (FeSO_4) > dosage of hydrogen peroxide (H_2O_2) > initial concentration of phenol > PH > the dosage of modified coal fly ash. The optimizing combination of the influences was 5 wt.% FeSO_4,1 mL;;3 wt.%H_2O_2,7 mL;;PH=5;;initial concentration of phenol, 300 mg/L and the dosage of modified coal fly ash, 200 mg/L. Under the condition above, phenol removal rate was 99.46%.