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| Degradation study of a Beneficiation Wastewater COD by modifiedfly ash catalyzed heterogeneous Fenton method |
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Received:January 11, 2018
Revised:October 12, 2018
Accepted:January 17, 2018
Published Online:January 11, 2019
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| KeyWord:beneficiation wastewater;COD;Heterogeneous Fenton;fly ash |
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| Abstract: |
| The beneficiation wastewater in a pyrite mine of Guangdong province with a high COD up to 220mg/L, by using acid modified fly ash as a catalyst for heterogeneous Fenton oxidation to treat this wastewater. The experimental results show that when pH at 4, modified fly ash dosage was 20g/L, Fe2 dosage was 1.57mmol/L, H2O2 dosage was 9.43mmol/L, reaction time was 40min, the removal rate of COD in wastewater can reach above 92%, it achieved a good degradation effect. This method can improve the utilization of H2O2 and the reaction time is shorter. It is an effective treatment method for the beneficiation wastewater. |
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