氯离子环境下工业污水处理厂金属腐蚀机理及防护策略

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中图分类号：TQ151 文献标志码：A 文章编号：1001-5922（2026）03-0708-04

Mechanism and protection strategy of metal corrosion in industrial wastewater treatment plants under chloride ion environment

TONG Yuhang'，GONG Manyu'，XIONG Jian²，Li Congqi' ，CHENG Weihua' （1.Central & Southern China Municipal Engineering Designand Research Institute Co.，Ltd.，Wuhan 430ol0，China; 2.Wuhan Water Group Co.，Ltd.，Wuhan 430034，China）

Abstract：Againstthe backdropof therapiddevelopmentof industrializationinChina，thestableoperationof industrialwastewatertreatment plants isthekeytoachievingthestandarddischargeof wastewater.However，thecorrosion of metal structures caused by high-concentration chloride ions in the industrial wastewater treatment process has become a major hidden danger restricting their normal operation.This paper analyzes the corrosion mechanism of chlorideions on metal materials，focuses on several common corrosion forms in industrial wastewater treatment systems， including pitingcorrosion，crevicecorrosion，galvaniccorrosionand stresscorrosion，and further explores theeffects of key factors such as chloride ion concentration，temperature， pH value ，flow rate and microbial concentration on the corrosionrate.Finally，combined withtheactual operating conditionsof industrial wastewater treatment plants，chloride ioncorrosion-resistantprotection strategiessuitablefordiferentworkingonditionsareproposed，aiming toprovidetheoretical reference for the metal protectionof industrial wastewater treatment plants inchloride ionenvironments.

Key words：chloride Ions;industrial wastewater treatment plants;metal material;corosionmechanism;protection Strategies

工业污水来源广泛，成分复杂，污水中各种离子 种类多样，尤其是氯离子浓度远高于普通生活污水。（剩余6891字）