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[1]罗景阳,张乐,张腾,等.不同工艺对污水处理效能及细菌代谢功能的影响[J].中国给水排水,2021,37(23):61-67.
　LUO Jing-yang,ZHANG Le,ZHANG Teng,et al.Effects of Different Processes on Wastewater Treatment Efficiency and Bacterial Metabolic Function[J].China Water & Wastewater,2021,37(23):61-67.

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不同工艺对污水处理效能及细菌代谢功能的影响

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第37卷期数: 2021年第23期页码: 61-67 栏目: 出版日期: 2021-12-01

Title:: Effects of Different Processes on Wastewater Treatment Efficiency and Bacterial Metabolic Function

作者:: 罗景阳^1,2，张乐^1,2，张腾^1,2，杨娥^1,2，操家顺^1,2，吴瑒^1,2,3; (1.河海大学浅水湖泊综合治理与资源开发教育部重点实验室，江苏南京210098；2.河海大学环境学院，江苏南京210098；3.同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室，上海200092)

Author(s):: LUO Jing-yang^1,2,ZHANG Le^1,2,ZHANG Teng^1,2,YANG E^1,2,CAO Jia-shun^1,2,WU Yang^1,2,3; (1. Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes , Hohai University, Nanjing 210098, China; 2. College of Environment, Hohai University, Nanjing 210098, China; 3. State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China)

关键词:: 污水处理厂; 处理工艺; 脱氮效能; 细菌种群结构; 功能基因

Keywords:: wastewater treatment plant; treatment process; total nitrogen removal efficiency; bacterial community; functional genes

摘要:: 污水处理厂工艺单元的选择对污水处理的最终效果起着重要作用。主要考察了污水处理厂不同处理工艺对典型污染物（特别是总氮）去除效果的影响，并从细菌种群结构与代谢功能的差别等角度解析了其内在作用机制。结果表明，相比旋流沉砂池与传统A₂O工艺组合，曝气沉砂池与改良型A₂O工艺组合更有助于对污水中典型污染物（特别是总氮）的去除。相比旋流沉砂池，曝气沉砂池除砂效果更优，降低了污泥中的无机组分而提升了其生物量；而改良型A₂O中的预缺氧池有助于功能细菌的富集和代谢活性的增强,Saprospiraceae、Dechloromonas、Haliangium、Thauera、Nitrosomonas和Saccharimonadales等脱氮细菌的丰度及相关功能基因（hao、nor、nap等）显著增加和上调,因此，其生化系统内的硝化和反硝化速率大幅提高，进而提升了污水厂对总氮等污染物的去除效能。该研究可为深入了解污水厂不同工艺单元对污染物去除效能的内在作用机制以及污水处理厂升级改造工艺选择提供科学依据和理论指导。

Abstract:: The process selection of wastewater treatment plant is critical to the final treatment performance. The effects of different treatment processes on removal of typical pollutants (especially total nitrogen) in wastewater treatment plants were mainly investigated, and the underlying mechanisms were analyzed from perspectives of bacterial community and metabolic function. Compared with a combined process of vortex grit chamber and traditional A₂O, the combined process of aerated grit chamber and modified A₂O was more conducive to the removal of typical pollutants (especially total nitrogen) from wastewater.Compared with vortex grit chamber, the aerated grit chamber had better sand removal performance, which reduced inorganic components in sludge and increased its biomass. The preanoxic tank in the modified A₂O process was beneficial to the enrichment of functional bacteria and the enhancement of metabolic activity. The abundances of typical nitrifying and denitrifying bacteria (e.g. Saprospiraceae, Dechloromonas, Haliangium, Thauera, Nitrosomonas and Saccharimonadales) and numbers of the related functional genes (hao, nor, nap, etc.) were all significantly increased. Therefore, nitrification and denitrification rates in the corresponding biological units were greatly increased, which improved the removal efficiencies of total nitrogen and other pollutants in the wastewater treatment plant.The results provided a scientific basis and theoretical guidance for further understanding the internal mechanism of pollutants removal by different units and selecting the upgrading and reconstruction process in wastewater treatment plants.

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更新日期/Last Update: 2021-12-01