微电解-电Fenton法预处理高浓度有机废水的研究

he various factors that influencing the CODcr degradation were analyzed by studying high concentration organic wastewater pre-treatment using micro electrolysis and electric Fenton process.Such as initial pH,Fe/C, Current density, Electrode plate spacing,dosage of H2O2 and reaction time and so on . The results showed that the best operation conditions of micro electrolysis technology were confirmed: the pH value of micro electrolysis is 3.0,mass ratio of Fe/C is 1:1, the reaction time is 90 min; the pH value of Fenton is 2.0, the current density is 40 mA/cm2, the plate spacing is 20 mm, the dosage of (30%)H2O2 is 50mL/L,and the reaction time is 180min.The maximum removal efficiency of CODcr may reach to 80% as well as the ratio of B/C can be raised from 0.2 to 0.7 under above conditions. Re-sults indicated that water quality of industrial wastewaters could be improved significantly by using pretreatment tech-nologies，and effluent was fit for further biological treatment．