臭氧催化氧化技术在造纸厂废水处理中的应用研究

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关键词：臭氧催化氧化；臭氧投加质量浓度；化学需氧量（COD）去除率；底物质量浓度

中图分类号：X793 文献标识码：A 文章编号：1008-9500（2025）12-0253-05DOI： 10.3969/j.issn.1008-9500.2025.12.074

Abstract： Withthetighteningofenvironmental protectionpolicies inChina，thedemandforadvanced wastewatertreatment technologies，especialladvanced oxidation technologies，has increased.Asa promising technology，ozonecatalytic oxidationis suitablefortheoxidationtreatment ofcomplexanddificult todegradeorganiccompounds，andcanbeapplied in the deep treatment of papermaking wastewater.Among them， Chemical Oxygen Demand （COD） is a commonly used indicator to evaluate the effectiveness of organic pollutant treatment.Taking the engineering practiceof ozone catalytic oxidation technology forsecondary biological treatment of wastewater in paper mils as an example，the influence of parameters suchasozoneconcentrationanddosageontheremovalrateoforganicpollutantsisverified.Theresultsconfimedthat intheozonecatalyticoxidationsystem，asthereactionprogresss，CODoncentratiobecomesthekeyactoraffctingteaction rate，and simply prolonging the waterretentiontimecannot continuouslyimprove CODremoval efciency;theconcentration of ozoneadditionispositivelycorelatedwithCODremovalrate，but theoptimalconcentrationneeds tobedeterminedthrough intermediateexperiments tobalance treatment eficiencyandcost;theCODremovalrateofozonecatalyticoxidationsystem is mostly maintained at 60%～ 80% ，and the degradation upper limit is constrained by factors such as hydroxyl radical （ ⋅⋅ OH） quenching and fluid resistance inthe catalyst.The research resultscan provide reference for the large-scale enginering application of ozone catalytic oxidation technology in the deep treatment of papermaking wastewater.

Keywords： ozone catalytic oxidation; ozone dosing concentration; removal rate of Chemical Oxygen Demand （COD）; substrate concentration

我国经济快速发展推动企业用水量激增，国家通过提高水价、强化取水权管理，密集出台多项政策法规，严格管控工业排水。（剩余5165字）