| In recent years,with the wide use of antibiotics,the increasing residual of antibiotics in the environment was harmful to human and ecological environment.Antibiotic pharmaceutical wastewater due to its complex water quality,high concentration,contained toxic and difficult biodegradable material,the traditional methods of biological treatment can not be dealt with effectively.Therefore,how to treat the antibiotic pharmaceutical wastewater became one hotspot in environmental science and engineering field.Electrocatalysis advanced oxidation technology?EAOP?,as a pretreatment technology,can improve biological availability,lower the load of antibiotic wastewater in biological treatment.But the highe energy consumption had hindered the application of electriccatalytic advanced oxidation technology in wastewater treatment.Developing a stable and efficient cathode,synergy degradation of pollutants with anode to improve the efficiency of current,to reducing energy consumption become a research hotspot.The MnOx composite was prepared by liquid phase oxidation reduction precipitation under the optimum preparation conditions.With 2-EAQ and Nano-G mixed to MnOx.The MnOx/2-EAQ/AC and MnOx/Nano-G/2-EAQ/AC composite cathode were prepared.The electrolytic conditions were optimized by the effect of phenol degradation.Results indicated that the electrolysis of phenol was conducted by using self-made MnO2/2-EAQ/AC composite cathode.In the electrolysis system with the preaeration conditions,the electrode gap was 3cm,the current density was39mA/cm2,the electrolyte concentration was 0.1mol/L,under 120min's electrolysis,the degradation rate of 100mg/L phenol can be 96%.And antibiotic pharmaceutical wastewater treatment was treated by the MnOx/Nano-G/2-EAQ/AC composite cathode.Under the optimal conditions,after 6h,wastewater COD removal rate reaches 89.75%,and improve the biodegradability obviously,BOD5/COD was 0.3 reached the treatment requirements of biological treatment. |
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