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首页> 外文期刊>Separation and Purification Technology >Optimization of Fenton and electro-Fenton oxidation of biologically treated coking wastewater using response surface methodology
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Optimization of Fenton and electro-Fenton oxidation of biologically treated coking wastewater using response surface methodology

机译：响应面法优化生物处理焦化废水的芬顿和电芬顿氧化

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In this study, Fenton and electro-Fenton were employed to treat biologically stabilized coking wastewater, i.e. the effluent of a biological coking wastewater treatment. The Box-Behnken experimental design (BBD) and response surface methodology (RSM) were used to design and optimize the performance of both processes. The regression quadratic model describing the TOC removal efficiency of Fenton and electro-Fenton process was developed and validated by the analysis of variances (ANOVA), respectively. The significance levels of linear and interaction effects of the reaction parameters on processes efficiencies were obtained. The optimum parameters were determined as pH 4, 1.2 h reaction time, 40 mM of Fe~(2+) and H2O2 for Fenton reaction; and pH 4, 1.8 h reaction time, 0.6 mM of Fe~(2+) and 3.7 mA/cm~2 of current density for electro-Fenton. The corresponding TOC removal efficiencies were about 75% and 55% for Fenton and electro-Fenton, respectively. Both Fenton and electro-Fenton are effective in advanced treatment for coking wastewater, and the response surface methodology is suitable for the design and optimization of the processes.
机译：在这项研究中，芬顿和电芬顿被用于处理生物稳定的焦化废水，即生物焦化废水处理的废水。 Box-Behnken实验设计（BBD）和响应面方法（RSM）用于设计和优化这两个过程的性能。分别通过方差分析（ANOVA）建立并验证了描述Fenton和电Fenton过程的TOC去除效率的回归二次模型。获得了反应参数对过程效率的线性和相互作用影响的显着性水平。确定的最佳参数为pH 4、1.2 h反应时间，40 mM Fe〜（2+）和H2O2用于芬顿反应。 pH为4，反应时间为1.8 h，Fe-（Fenton）的Fe〜（2+）为0.6 mM，电流密度为3.7 mA / cm〜2。 Fenton和电Fenton的相应TOC去除效率分别约为75％和55％。 Fenton和Electro-Fenton均可用于焦化废水的深度处理，并且响应面方法适合于工艺的设计和优化。

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