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A/O工艺的改进与提升王诗绮（南京工业大学城市建设学院）摘要：随着经济水平高质量发展，国家对环境问题愈加重视。
以往的污水处理工艺已经逐渐达不到更高的排放标准。
同时，由于城市工业生产的发展、城市人口规模扩大，工业废水和生活污水排出量日益增多，大量未经严格处理的污水若直接排放至河流，会导致周围环境污染十分严重，不仅直接污染了市区的地下饮用水，而且对河流下游地区农业生产和人民生活造成了危害。
两级A/O生物滤池是在BAF的基础上，改良成一种集曝气充氧、物理截留、生物降解于一体的复合工艺，主要利用生物膜内的好氧/缺氧实现同步硝化反硝化，具有投资少、脱氮率高、抗冲击负荷强等优点,近年来广泛应用于各大污水厂的升级改造。
生物膜内微生物活性的高低决定着处理效果，因此前期生物膜的培养至关重要。
两级A/O生物滤池具有显著的脱碳硝化效果[1]。
关键词：污水处理；A/O；脱氮率高；升级改造 A/O process improvement and upgradingAbstract: With the development of high quality economy, the country pays more and more attention to environmental problems. The previous sewage treatment process has gradually failed to meet higher discharge standards. At the same time, due to the development of urban industrial production and the expansion of urban population, the discharge of industrial wastewater and domestic sewage is increasing day by day. If a large amount of untreated sewage is discharged directly to rivers, it will lead to serious environmental pollution, which not only directly pollutes underground drinking water in urban areas, but also endangers agricultural production and people's lives in the lower reaches of rivers. The two-stage A/O biofilter is a kind of compound process which integrates aeration, physical interception and biodegradation on the basis of BAF. It mainly uses aerobic / anoxic in biofilm to realize simultaneous nitrification and denitrification. It has the advantages of less investment, high denitrification rate and strong impact resistance. In recent years, it has been widely used in the upgrading and transformation of major sewage plants. The microbial activity in biofilm determines the treatment effect, so the culture of biofilm is very important. two-stage A/O biofilter has remarkable decarbonization and nitrification effect.Keywords: sewage treatment; high A/O; denitrification rate; upgrading1、引言合肥市位于中国中部（北纬32、东经117），长江淮河之间、巢湖之滨，通过南淝河通江达海，具有承东启西、连接中原、贯通南北的重要区位优势，还有我国五大淡水湖之一的巢湖[3]。
随着我国城镇化建设的飞速发展，人们在生活中对水的用量也随着增加，导致我国原本就是一个水资源贫乏的国家，其水资源短缺问题日发严峻。
城镇生活污水主要是由厨房污水、厕所污水两部分构成的，使得污水中含有大量的尿素、蛋白质、纤维素等污染。
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