【摘要】 好氧颗粒污泥（AGS）因其高效性和紧凑性被视为先进的污水处理技术，但较长启动周期限制了其推广应用。为突破这一瓶颈，该研究以城市污水处理厂脱水污泥为原材料，制备颗粒状载体后接种至SBR反应器，探究其对AGS系统启动速度及长期运行稳定性的强化效能。结果表明：采用脱水污泥预造粒接种策略可省去26 d的微生物聚集期，实现AGS系统快速启动。与对照组相比，实验组成熟AGS的平均粒径增加400～700μm，污泥体积指数(SVI₃₀)降低（31.6±15.4） mL/g，沉降性能显著提升。实验组成熟AGS对COD、NH₄⁺-N和TN的平均去除率为（95.9%±2.0%）、（98.2%±1.9%）和（81.0%±5.0%），同步硝化反硝化（SND）效率达到（84.6%±6.1%），均高于对照组。预造粒的接种有利于亚硝酸盐氧化菌（NOB）的积累，且可富集Candidatus＿Competibacter（25.3%）、Delftia（18.2%）等功能菌，提高系统稳定性和污泥减量化能力。更多还原

【Abstract】 Aerobic granular sludge（AGS） is considered as a cutting-edge wastewater treatment technology owing to its high efficiency and compact configuration; however, the time-consuming start-up period has limited its widespread application.To address this limitation, dewatered sludge from a municipal wastewater treatment plant is utilized to prepare granular carriers, which are subsequently inoculated into a sequencing batch reactor（SBR）, and the enhancement effect on AGS system start-up acceleration and long-term operational stability is investigated. The results demonstrated that the strategy of pregranulated inoculation by dewatered sludge could considerably shorten 26-day microbial aggregation phase, achieving rapid start of AGS system; compared with the control group, the experimental group produced matured AGS particles increasing by 400～700 μm in average size and a（31.6±15.4） m L/g reduction in sludge volume index(SVI₃₀), which indicated AGS’s significantly enhanced settleability; and the matured AGS of the experimental group demonstrated an excellent pollutants removal effectiveness, e.g COD（up to（95.9%±2.0%））, NH₄⁺-N（up to（98.2%±1.9%））, and TN（up to（81.0%±5.0%））, with simultaneous nitrification and denitrification（SND） efficiency being up to（84.6%±6.1%）, i.e., all of the results exceeded the control group performance. In addition, the pre-granulated inoculation facilitated nitrite-oxidizing bacteria（NOB） enrichment and selectively accumulated functional genera including Candidatus＿Competibacter（up to 25.3%） and Delftia（up to 18.2%）,thereby enhancing system stability and sludge reduction capacity.更多还原