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Study on Fischer-Tropsch synthesis waste water treatment by Fenton-UASB-Biological contact oxidation

Yongwang Li

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Abstract

The waste water from Fischer-Tropsch synthesis plant was treated by Fenton-UASB-Biological contact oxidation combined process.The results showed that the pretreatment of the waste water by Fenton oxidation can not only eliminate CODCr by 63%,but also improve its bio-degradability effectively when the pH was 3,reaction time were 120 min and dosage of H2O2 and Fe2+ was 30 mL/L and 1.2 g/L respectively;after treatment by UASB anaerobic,the CODCr removal rate could reach up to 90%;and finally after contact oxidation,the effluent CODCr was below 100 mg/L,which can meet the second discharge standard of chemical waste water in GB8978-1996 Integrated Wastewater Discharge Standard.

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What this paper is about

The waste water from Fischer-Tropsch synthesis plant was treated by Fenton-UASB-Biological contact oxidation combined process.The results showed that the pretreatment of the waste water by Fenton oxidation can not only eliminate CODCr by 63%,but also improve its bio-degradability effectively when the pH was 3,reaction time were 120 min and dosage of H2O2 and Fe2+ was 30 mL/L and 1.2 g/L respectively;after treatment by UASB anaerobic,the CODCr removal rate could reach up to 90%;and finally after contact oxidation,the effluent CODCr was below 100 mg/L,which can meet the second discharge standard of chemical waste water in GB8978-1996 Integrated Wastewater Discharge Standard.

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Available abstract

The waste water from Fischer-Tropsch synthesis plant was treated by Fenton-UASB-Biological contact oxidation combined process.The results showed that the pretreatment of the waste water by Fenton oxidation can not only eliminate CODCr by 63%,but also improve its bio-degradability effectively when the pH was 3,reaction time were 120 min and dosage of H2O2 and Fe2+ was 30 mL/L and 1.2 g/L respectively;after treatment by UASB anaerobic,the CODCr removal rate could reach up to 90%;and finally after contact oxidation,the effluent CODCr was below 100 mg/L,which can meet the second discharge standard of chemical waste water in GB8978-1996 Integrated Wastewater Discharge Standard.

Key concepts: Chemistry, Effluent, Wastewater, Oxidation process, Sewage treatment, Pulp and paper industry, Waste management, Nuclear chemistry

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