2010•Sichuan EnvironmentRequires access

Study of Fenton Oxidation for Pulping Middle-Stage Effluent after Micro-Electrolysis

Qiu Xian-huan

Abstract

In this paper the effect of factors such as initial pH,Fe2+ dosage,H2O2 dosage and reaction time on removal rates of CODCr and chromaticity for the wastewater from micro-electrolysis was studied.The results showed that with pH increasing,the removal rates of CODCr and chromaticity increased first and then decreased and realized the optimum effect at pH 4.The similar trends could be observed for the factors such as Fe2+ dosage,H2O2 dosage and reaction time.The optimum dosages of H2O2 and FeSO4·7H2O,and optimum reaction time were 4 mL/L,1.5g/L and 60min respectively.The removal rates of CODCr and chromaticity were about 80% and 84% respectively.

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Key concepts: Chromaticity, Electrolysis, Effluent, Chemistry, Dose, Pulp and paper industry, Nuclear chemistry, Environmental engineering