樟木化学机械浆废水处理系统效能下降成因分析与混凝预处理强化研究

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关键词：化学机械浆；樟木制浆；特征污染物；废水处理；厌氧强化中图分米号.Y702：Y7021 立献标识码．

DOI：10.11980/j.issn.0254-508X.2026.04.019

Study on the Cause Analysis ofPerformance Decline and Enhancement by Coagulation Pretreatment in Camphorwood Chemi-mechanical Pulping Wastewater Treatment System

ZHONG Tianqi1，2.3 ZUO Jian'e1，4，*

（1.TsinghuaSenzhenItenationalGduateShool，sighua UniversityhzenGuangdongProvince，855;.CaaerInvestmentCo，deiing；3.HnnhngtonganueEnomentalProtectionchnologyC，dueyang’nanProvince，41；4tateKyJointLbofontaluationdlutionContrololofontsingUeit Beijing，） （ * E-mail： jiane. zuo@tsinghua. edu. cn）

Abstract：TheresponsecharacteristicsofkeyindicatorssuchasCODintheanaerbic，erobicandadvancedtreatmentunitsofapulpand papermillnu’aprovcfottracdissudalytiotofhoodprosasteate onthanaerobictreatmentunitinelationtothechanges incamphorwoodconsumptionduringAPMPpulping.Thersultsshowedthats the proportion of camphorwood increased from 4.24% to 12.81% ，the CODcr volumetric loading rate of the anaerobic system exceeded the design value by 29% ，and the influent CODCr concentration increased by 16.5% .Luminescent bacteria toxicity tests confirmed that the 100% （ camphorwoodchemimechanicalpulpingwastewaterexhibitedthehighesttoxicity，andthetoxicityincreasedwiththeincreasingCOD concentration. Under identical CODCr loading conditions，the anaerobic COD cr removal efficiency decreased in a dose-dependent manner when the camphorwood pulping wastewater proportion increased from 5% to 15% . On this basis，the effcacy of introducing coagulation pretreatmentupstreamoftheanaerobicunitfortheifluentquaityimprovementwasevaluatedintisstudy.Undertheoptizdcoditios （ 5g/L PAC with appropriate PAM），the coagulation pretreatment reduced the influent CODcr and SS by 25.9% and 28.7% ，respectively，and

increased the subsequent anaerobic COD removal efficiency by 14.5% Keywords： chemi-mechanical pulp； camphorwood pulping; characteristicpollutants；wastewater treatment；anaerobic enhancement

中国已连续多年成为全球纸和纸板生产与消费第一大国，而造纸行业的可持续、高质量发展正面临严峻的《中国造纸》2026年第45卷第4期资源与环境两大约束。（剩余17479字）