模拟冷却水中不同抑菌方法对不锈钢微生物腐蚀的抑制作用  

Microbial Corrosion Inhibition of Different Antibacterial Methods on Stainless Steel in Simulated Cooling Wate

作　　者：杨华 林薇薇 陈鸿伟 刘安仓 葛红花 孙伟鹏 赵阳 YANG Hua;LIN Weiwei;CHEN Hongwei;LIU Ancang;GE Honghua;SUN Weipeng;ZHAO Yang(Huaneng(Guangdong)Energy Development Co.,Ltd.Shantou Power Plant,Shantou 515000,China;Shanghai Zhongqiao Vocational and Technical University,Shanghai 201514,China;China Huaneng Group Co.,Ltd.Southern Branch,Guangzhou 510000,China;Shanghai University of Electric Power,Shanghai 201306,China)

机构地区：[1]华能(广东)能源开发有限公司汕头电厂,汕头515000 [2]上海中侨职业技术大学,上海201514 [3]中国华能集团有限公司南方分公司,广州510000 [4]上海电力大学,上海201306

出　　处：《腐蚀与防护》2024年第7期8-13,共6页Corrosion & Protection

基　　金：华能集团总部科技项目;上海市科委项目(23010501300)。

摘　　要：通过电化学测试和表面分析研究了抑菌剂十二烷基二甲基苄基氯化铵(1227)和电磁处理对含硫酸盐还原菌(SRB)的模拟冷却水中不锈钢微生物腐蚀的影响。结果表明:抑菌剂1227具有较好的抑菌性能,其质量浓度为20mg/L时抑菌率达100%,添加抑菌剂后不锈钢阻抗模值显著提高,钝态电流密度明显下降,抑菌剂可以起到较好的抑制微生物腐蚀作用;电磁处理对SRB的抑菌作用不佳,最大抑菌率为42.46%,但其对微生物腐蚀的抑制作用与抑菌剂1227相当;模拟冷却水溶液经抑菌剂1227或电磁处理后,浸泡其中的不锈钢的表面生物膜附着量均明显减少。The effects of an antibacterial agent dodecyldimethylbenzylammonium chloride(1227)and electromagnetic treatment on microbial corrosion of stainless steel in simulated cooling water containing sulfate reducing bacteria(SRB)were studied through electrochemical testing and surface analysis.The results show that the antibacterial agent 1227 had good antibacterial performance,with a 100%inhibition rate at a mass concentration of 20 mg/L.After adding antibacterial agent 1227,the impedance modulus of the stainless steel significantly increased,and the passive current density significantly decreased.The antibacterial agent could play a good role in inhibiting microbial corrosion.The antibacterial effect of electromagnetic treatment on SRB was poor,with a maximum antibacterial rate of 42.46%,but its inhibitory effect on microbial corrosion was equivalent to that of antibacterial agent 1227.When the simulated cooling water solution was treated with antibacterial agent 1227 or electromagnetic treatment,the surface biofilm adhesion of stainless steel immersed in it was significantly reduced.

关 键 词：不锈钢 硫酸盐还原菌 微生物腐蚀 抑菌剂 电磁处理 

分 类 号：TG172[金属学及工艺—金属表面处理]