In order to effectively degrade organic compounds in high concentration papermaking wastewater,CeO2-Ps-LaCoO3/Al2O3 and CeO2-LaCoO3/Al2O3 are prepared via electrochemical deposition in neutral phosphate buffer solution and pure water,respectively.Through characterizing the physical properties of CeO2-Ps-LaCoO3/Al2O3,CeO2-LaCoO3/Al2O3,and LaCoO3/Al2O3 by means of XRD,SEM,etc.,it is inferred that CeO2-Ps-LaCoO3/Al2O3 shows stronger catalytic oxidation and stability.CeO2-Ps-LaCoO3/Al2O3 achieves a 76.5％of degradation rate for COD in the wastewater after 3 hours of ozone catalytic oxidation to high concentration papermaking wastewater.Under the same conditions,the COD degradation rates by CeO2-LaCoO3/Al2O3 and LaCoO3/Al2O3 are 68.5％and 63.5％,respectively.
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