QUANChen-yan,GUOYuan,ZHANGZhao-he,et al.Efficiency and Mechanism of Ozone-Biological Activated Carbon Advanced Treatment Process for Low-turbidity and Micro-polluted Raw Water in Northern China[J].China Water & Wastewater,2025,41(23):55-63.
北方低浊微污染原水O3-BAC深度处理效能及机制
- Title:
- Efficiency and Mechanism of Ozone-Biological Activated Carbon Advanced Treatment Process for Low-turbidity and Micro-polluted Raw Water in Northern China
- Keywords:
- drinking water treatment; ozone-biological activated carbon (O3-BAC); low-turbidity raw water; functional bacteria; biological risk
- 摘要:
- 为了探究臭氧-生物活性炭（O3-BAC）深度处理工艺对北方低浊微污染原水的净化效能及其作用机制，选取我国北方某座同步运行常规工艺与O3-BAC深度处理工艺的给水厂作为研究对象，考察了两种工艺在冬季低温、长期低浊和有机微污染的同一水源条件下的净水效果和污染物削减规律，同时分析了细菌群落结构及其变化特征与生物风险。结果表明，O3-BAC深度处理工艺适用于处理我国北方低浊微污染原水，但实际运行效果易受季节更替的影响；在O3-BAC与常规工艺协同作用下，可构建多级屏障以强化对污染物的去除，其中炭滤和砂滤填料上所附着的生物膜在降解有机微污染物中发挥了重要作用，例如Saprospiracea和Blastocatella菌属。
- Abstract:
- The performance of the two treatment systems of a water treatment plant in northern China operating both conventional treatment and ozone-biological activated carbon （O3-BAC） processes in terms of water quality improvement and pollutants removal was evaluated under consistent source water conditions characterized by winter low-temperature, prolonged low-turbidity, and rganic micro-pollutants, so as to investigate the purification efficiency and underlying mechanisms of the O3-BAC advanced treatment process in treating low-turbidity and micro-polluted raw water in northern China. Additionally, the bacterial community composition, its dynamic variations, and associated biological risks were systematically analyzed. It showed that the O3-BAC advanced treatment process was well suited for treating low-turbidity, micro-polluted raw water in northern China; however, its performance was significantly influenced by seasonal variations. The integration of O3-BAC with conventional treatment processes enabled the establishment of multi-barrier systems for enhanced removal of pollutants. Notably, biofilms developed on carbon and sand packing media contributed significantly to the degradation of organic micro-pollutants, with key microbial genera including Saprospiraceae and Blastocatella playing a pivotal role.
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