Cu/Al2O3催化臭氧氧化深度处理造纸废水

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关键词：催化臭氧氧化；非均相催化剂；造纸废水；深度处理；浸渍-焙烧法中图分类号：X793 文献标识码：A DOI：10.11980/j.issn.0254-508X.2025.07.015

Abstract：Inthisstudy，firstly，theheterogeneouscatalyst（ Cu/Al2O3 ）waspreparedbyimpregnation-calcinationmethod with Al2O3 as the carrier， and we characterized it. Then，the effects of ozone inflow（4，6，8，and 10mg/min ），catalyst dosage （30，40，50，and 60g/L ），and circulating water flow rate （0， 40，80，and 120mL/min ）on effluent chemical oxygen demand（COD）were tested in laboratory scale，using the wastewater of a paper mill in Tianjin as raw material. Finally， Cu/Al2O3 catalyzed ozonation was used as the advanced treatment process to carry out pilot tests.TheresultsshowedtatCucouldbeloaddothesurfaceofthecarierbyimpregnation-calcinationmetodInthelaboratorytests， when the ozone inflow was 8 mg/min，the dosage of Cu/Al was 50g/L ，and the circulating water flow rate was 120mL/min ，the COD GΓ of wastewater decreased from 64.0mg/L to 21.8mg/L ，and the removal rate of COD Gr was 65.9%.In the pilot test，when the CODCr of influent water fluctuated in the range of 50. O～65.O mg/L，the CODcr of effluent water was lower than 30mg/L ，and the COD cr removal ratewasstable at about 63. 1% .The CODof efluent watermetthedischarge standardofGB3544—2O08“Discharge standardof waterpollutantsforpulpand paper industry”，which indicated that the prepared catalyst had stable activity and no secondary polution.

Keywords：catalyzedozonation；heterogeneouscatalyst；papermakingwastewater；advancedtreatment;impregnation-calcinatioethod

目前，造纸工业整体的发展势头良好，纸张的产量持续增加，制浆造纸企业的废水排放量也在不断增加。（剩余14446字）