净水技术2025，Vol.44Issue(6)：108-115,8.DOI:10.15890/j.cnki.jsjs.2025.06.013
臭氧氧化对再生水厂超滤膜污染的影响分析
Effect of Ozonation on UF Membrane Fouling in Reclaimed WWTPs
摘要
Abstract
[Objective]To investigate the efficacy of ozonation process in the pre-membrane pretreatment stage and its role in mitigating membrane fouling,an engineering application study is conducted at a reclaimed wastewater treatment plant in Shandong Province(with a water supply capacity of 60 000 m3/d)by establishing two pre-membrane pretreatment modes with ozone oxidation process activated and deactivated for comparative analysis.[Methods]Through the analysis of organic matter such as three-dimensional fluorescence and molecular weight distribution,as well as characterizations by scanning electron microscopy(SEM),atomic force microscopy(AFM),and Fourier transform infrared spectroscopy(FTIR),the impact of the ozonation process on the pollutant removal efficiency and ultrafiltration(UF)membrane fouling was systematically analyzed.[Results]The result showed that after the adoption of the ozone pretreatment process,the removal efficiency of dissolved organic carbon(DOC)in the raw water was increased by 10.82％.After ozonation,the removal of aromatic proteins and microbial metabolites could be further improved,and the molecular weight was reduced.The removal rate of total dissolved organic matter(DOM)was increased to 69.43％.The SEM and AFM characterizations of the UF membrane demonstrated that after the addition of the ozonation process,the degree of membrane surface fouling and pore blockage could be significantly reduced.The infrared absorption spectroscopy confirmed that ozone oxidation process effectively reduces the absorption peaks associated with chemical bonds such as C-H,C=O,and C-O-C on the membrane surface,therebydecreasing the adhesion of substances containing these bonds and alleviating membrane fouling.[Conclusion]The ozonation process can increase the removal rate of organic matters in the influent,reduce the molecular mass,effectively alleviate the attachment of substances on the membrane surface,and it is an effective pre-membrane pretreatment process for reducing the fouling of UF membranes.关键词
再生水/膜污染/臭氧氧化/有机物/荧光特性Key words
reclaimed water/membrane fouling/ozonation/organic substance/fluorescence characteristics分类
资源环境引用本文复制引用
刘欣,刘伟刚,任杰,宋承煜,杨卫华,汪东迎..臭氧氧化对再生水厂超滤膜污染的影响分析[J].净水技术,2025,44(6):108-115,8.基金项目
胜利石油管理局有限公司供水分公司科学技术进步基金(GKG2303) （GKG2303）
