为有效降解高浓度造纸废水有机物,通过电化学沉积法分别在磷酸盐中性缓冲溶液和纯水中制得CeO₂-Ps-LaCoO₃/Al₂O₃和CeO₂-LaCoO₃/Al₂O₃。通过对CeO₂-Ps-LaCoO₃/Al₂O₃、CeO₂-LaCoO₃/Al₂O₃以及LaCoO₃/Al₂O₃进行XRD、SEM、析氧过电位和电阻抗等物性表征发现,CeO₂-Ps-LaCoO₃/Al₂O₃具有更强催化氧化性及稳定性。对高浓度造纸废水臭氧催化氧化降解3 h后,CeO₂-Ps-LaCoO₃/Al₂O₃对废水COD的降解率为76.5%,而相同条件下CeO₂-LaCoO₃/Al₂O₃和LaCoO₃/Al₂O₃的化学需氧量(COD)降解率分别为68.5%和63.5%。

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.

朱开金(1962-),男,博士,教授,主要从事工业废水处理技术的研究,通讯联系人,zkj621104@163.com。