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| Experimental study on pretreatment of phenol acetone wastewater by electro-catalytic oxidation |
| CHEN Yue-fang1, FAN Rong1, TENG Ke-jun2, CHEN Kai-hua2, PAN Jian-tong2, CHI Jin-bao2 |
1. Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. Beijing Bo-hui-te Environment Technology Limited Company, Beijing 100102, China |
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Abstract The application of electro-catalytic oxidation technology for the pretreatment of a certain refinery's wastewater containing phenol acetone was studied. After selection and preparation, five different metal-loaded activated carbon particle electrodes and their catalytic activities were determined. Manganese ion was finally chosen as the activated carbon particle catalyst, improving the catalytic activity of the particle electrode. Factors like voltage, pH value, aeration rate and hydraulic retention time which influence the catalytic activity were studied. Optimum reaction conditions for the system were as follows:slot voltage value of 15V, water pH value of 5.5~6.5, hydraulic retention time of 90minutes, and aeration rate of 6m3/(m2·h). Under the condition, 80% CODcr removal was achieved and the biodegradability BOD/COD value could be largely increased from 0.07 to 0.43. Under optimum experimental conditions, the concentration of phenols, aromatic hydrocarbons, aldehydes, and ketones in phenol acetone wastewater could be degraded to below 10mg/L. After pretreatment, favorable conditions were provided for subsequent biochemical treatment of phenol acetone wastewater.
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Received: 25 March 2016
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