PS-AOPs法造纸废水处理中COD测定失真的影响机制及消除方法

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关键词：造纸废水；过硫酸盐高级氧化；中图分类号：X793 文献标识码：A DOI：10.11980/j.issn.0254-508X.2026.04.021

Interference Mechanisms and Elimination Methods for CODDetermination Distortion in thePS-AOPs Process forPapermakingWastewater Treatment

GUO Fusen'GE Qiang2ZHOU Xianbo³WANG Yan14*ZHU Congyun²LIU Kuanyong³WAN Jinquan14

（1.ScholofEiroentandEnegyouthCinaUiversityfecholgGuangzouGuangdongProince，6;.inaCC

EngineringCoporation，Changsha，Hu’nanProvince，O4；3.GuizhouPengsheng（Group）PaperCo.，Ld.QianxinanGuo Province，552401; 4.StateKeyLabofAdvancedPapermaking andPaper-basedMaterials，South China UniversityofTechnology， Guangzhou，Guangdong Province，） （ ∗ E-mail： yanwang@scut. edu. cn） Abstract：ToaddresstheisseofCOmeasurementdistortioninpaperakingwastewatertreatmentusingpersulfate-aseddvancedoxidation processes （PS-AOPs），this study identified S2O82- ，Fe 2+ ，and Cl as the primary interference sources through monitoring data and elementalnalysis（C-C）eintefereceehasmsanstedasositiveinteferececusdbidantosumptiogatietefe enceduetotitrantdepletion，andteiroiearsuperposionincompexmatrices.Basedotesefndings，nintegatedeliatiopr tocol was developed and validated ： S2O82- was reduced using Na2SO （mass ratio≥） ∴1 at 90∘C for 60 min，achieving > 4 % removal）; HgSO4 （20号 3asking was optimized according to Cl- concentration（mass ratio 15：1 ，with <5% error）；and Fe was corrected via stoichiometric calibration.Spike and recovery experiments demonstrated recoveries of 97 % ～102%，confirming that the protocol effectively overcame complex matrix interferences and significantly improved COD measurement accuracy.

Key words：papermaking wastewater; persulfate-based advanced oxidation; COD determination distortion

随着水资源短缺与废水排放标准日益严格，造纸废水的深度处理逐渐向高级氧化技术发展[12]。（剩余8605字）