The Research on the treatment of wastewater from production of plastic abrasives by Fenton reagent

摘要

The Fenton reagent was used for the treatment of high concentration organic wastewater from production of plastic abrasives. The effect of reaction time, pH value, dosage of H2O2, the mol ratio between H2O2 and Fe2+, reaction temperature and adding ways of H2O2 on COD removal efficiency was studied. The mechanism of the affecting factors was also analyzed. The optimal operational condition was determined as follows: At room temperature, the mass concentration of H2O2 (30%) is 40mg/L and its adding way was batch feeding; the initial pH value of the wastewater was adjusted to 4.0, the mol ratio between H2O2 and Fe2+, was 12∶1, and reaction time was 45min. Under the optimum operational condition, the COD removal efficiency reached 91.57%. So it is feasible to treat high concentration organic wastewater from production of plastic abrasives by Fenton reagent.