1. Guangxi Jiangyi Environmental Technology Co., Ltd., Nanning 530000, China; 2. State Key Laboratory for Enzymatic Hydrolysis of Non-food Biomass, National Engineering Research Center for Non-food Biomass Energy, Guangxi Key Laboratory of Biomass Refining, Guangxi Academy of Sciences, Nanning 530007, China; 3. Joint Laboratory of Integrated Ecological Environment Management and Intelligent Low-Carbon Management Technology, Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning 530007, China
Abstract: Microbubble-electrocatalytic synergic oxidation technology is employed to study the degradation of high concentration of landfill leachate.The influences of current density,pH,microbubble ventilation and other technological conditions on the treatment of high concentration of landfill leachate are investigated.The removal effects of COD and ammoniacal nitrogen by microbubble,hydrogen peroxide,electrocatalysis and their double combination synergic process respectively are compared and studied.The synergic co-oxidation process is optimized in response surface by using Design Expert 8 software.The optimal process conditions by response surface prediction are as follows:the current density is 33.3 mA·cm-2,the ventilation is 8.5 L·min-1,and the initial pH of the leachate is 8.5.Under these conditions,the removal rates of COD and ammoniacal nitrogen are 75.3% and 97.1%,respectively,which is basically consistent with the predicted values.
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