| Kinetics on degradation of CODcr in mustard comprehensive wastewater by electro-Fenton process |
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| 作者姓名： | ZHANG Zhi and YIN Xiaojing |
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| 作者单位： | Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; Chongqing Urban Sewage Treatment Engineering Research Center, Chongqing 400045, China;Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China |
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| 摘 要： | The treatment efficiency of mustard comprehensive wastewater with high salt by electro-Fenton is studied to solve the problem that microorganism is inhibited by high salt and improve the unstable performance of biological treatment. CODcr removal effect and its influencing factors in high salt wastewater by electro-Fenton process are mainly investigated, and the degradation kinetics of CODcr is analyzed. The results show that CODcr removal rate reaches 76.33 % after 120 min at the conditions that current density of 10 A/dm 2, ferrous sulfate dosage 1.0 mmol/L, electrode spacing 15 mm, pH=5, RuO2-IRO2-SnO2-TiO2/Ti quaternary as anode, titanium mesh as cathode. Kinetic analysis shows that the degradation curve of CODcr consists with the first-order response characteristics and the value of the kinetic constant is 0.0121 min -1 when COD of raw wastewater is 4 225 mg/L. By linear regression equation, kinetics model of CODcr degradation is established. The model possesses higher regression rate (R 2=99.25%) and has higher coincide degree with the experimental results.
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| 关 键 词： | electric-Fenton mustard comprehensive wastewater kinetics degradation rate |
Kinetics on degradation of CODcr in mustard comprehensive wastewater by electro-Fenton process |
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| ZHANG Zhi and YIN Xiaojing.Kinetics on degradation of CODcr in mustard comprehensive wastewater by electro-Fenton process[J].Storage & Process,2013(1):115-120. |
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| Authors: | ZHANG Zhi and YIN Xiaojing |
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| Abstract: | The treatment efficiency of mustard comprehensive wastewater with high salt by electro-Fenton is studied to solve the problem that microorganism is inhibited by high salt and improve the unstable performance of biological treatment. CODcr removal effect and its influencing factors in high salt wastewater by electro-Fenton process are mainly investigated, and the degradation kinetics of CODcr is analyzed. The results show that CODcr removal rate reaches 76.33 % after 120 min at the conditions that current density of 10 A/dm 2, ferrous sulfate dosage 1.0 mmol/L, electrode spacing 15 mm, pH=5, RuO2-IRO2-SnO2-TiO2/Ti quaternary as anode, titanium mesh as cathode. Kinetic analysis shows that the degradation curve of CODcr consists with the first-order response characteristics and the value of the kinetic constant is 0.0121 min -1 when COD of raw wastewater is 4 225 mg/L. By linear regression equation, kinetics model of CODcr degradation is established. The model possesses higher regression rate (R 2=99.25%) and has higher coincide degree with the experimental results. |
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| Keywords: | electric-Fenton mustard comprehensive wastewater kinetics degradation rate |
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