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Treatment of Machinery Emulsified Wastewater by the Process of Flocculation-Fenton Reagent Oxidation

Yuming Zhao

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Abstract

Flocculation-Fenton reagent oxidation process was applied to treat the emulsified wastewater generated from a machine warks.The factors affecting the removal rate of COD were studied.The experiment results showed that: PAC(w%=5%) was used as flocculent with the optimum dosage of 1.5 mL/L(wastewater),the COD removal rate reached 29.6% after flocculation;the optimum operating conditions of Fenton reagent were: n(H2O2):n(Fe2+)=5:1,m(H2O2):m(COD)=2.5:1,wastewater pH=5,temperature 30 ℃,reaction time=2 h and 78.5% of the COD was removed after the oxidation.After the treatment of flocculation-Fenton reagent oxidation,84.9% of the total COD was removed.

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Flocculation-Fenton reagent oxidation process was applied to treat the emulsified wastewater generated from a machine warks.The factors affecting the removal rate of COD were studied.The experiment results showed that: PAC(w%=5%) was used as flocculent with the optimum dosage of 1.5 mL/L(wastewater),the COD removal rate reached 29.6% after flocculation;the optimum operating conditions of Fenton reagent were: n(H2O2):n(Fe2+)=5:1,m(H2O2):m(COD)=2.5:1,wastewater pH=5,temperature 30 ℃,reaction time=2 h and 78.5% of the COD was removed after the oxidation.After the treatment of flocculation-Fenton reagent oxidation,84.9% of the total COD was removed.

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Available abstract

Flocculation-Fenton reagent oxidation process was applied to treat the emulsified wastewater generated from a machine warks.The factors affecting the removal rate of COD were studied.The experiment results showed that: PAC(w%=5%) was used as flocculent with the optimum dosage of 1.5 mL/L(wastewater),the COD removal rate reached 29.6% after flocculation;the optimum operating conditions of Fenton reagent were: n(H2O2):n(Fe2+)=5:1,m(H2O2):m(COD)=2.5:1,wastewater pH=5,temperature 30 ℃,reaction time=2 h and 78.5% of the COD was removed after the oxidation.After the treatment of flocculation-Fenton reagent oxidation,84.9% of the total COD was removed.

Key concepts: Flocculation, Reagent, Wastewater, Chemistry, Fenton's reagent, Oxidation process, Pulp and paper industry, Chromatography

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