中文摘要：

以静置段代替传统厌氧段，采用后置缺氧方式，考察了静置/好氧/缺氧序批式反应器（SBR）（R1）的生物脱氮除磷（BNR）性能，并与传统厌氧/好氧/缺氧序批式反应器（SBR）（R2）进行对比.两反应器进水乙酸钠、氨氮（NH4＋-N）及磷酸盐（PO43--P）浓度均分别为350 mg·L^-1（以COD计）、40 mg·L^-1及12 mg·L^-1，水力停留时间（HRT）为12 h.研究结果表明，R1长期运行中磷的去除率与R2相当，分别为92.4%和92.1%，而总氮（TN）去除率则较R2高，分别为83.5%和77.0%.R1静置段省去搅拌但仍能起到厌氧段的作用，为好氧快速摄磷奠定了基础，同时R1缺氧段发生反硝化摄磷，使出水磷降至0.91 mg·L^-1.好氧段内R1发生了同步硝化-反硝化（SND），贡献了18.0%的TN去除量，R2也存在SND，但脱氮贡献率较少，仅为9.8%.R1和R2后置缺氧反硝化均以糖原驱动，反硝化速率分别为0.98、0.84 mg·g-1·h^-1（以每g VSS产生的N（mg）计），出水TN分别为6.62、9.21 mg·L^-1.研究表明，静置段代替传统厌氧段后，可获得更好的脱氮效果，且工艺更为简化.

英文摘要：

A sequencing batch reactor （SBR） （R1） with static/aerobic/anoxic regime was used for biological nutrient removal （BNR）. To investigate the feasibility of static phase as a substitute for conventional anaerobic phase, the performance of R1 was compared to anaerobic/aerobic/anoxic SBR （R2）. The concentrations of influent acetate, ammonia nitrogen （NH4＋-N） and phosphate （PO43--P） in both reactors were 350 mg·L^-1, 40 mg·L^-1and 12 mg·L^-1, respectively, and the hydraulic retention time （HRT） was 12 h. The experimental results demonstrated that the phosphorus （P） removal efficiency in R1 （92.4%） was comparative to R2 （92.1%）. However, total nitrogen （TN） removal efficiency of R1 （83.5%） was higher than that of R2 （77.0%）. Static phase in R1 still worked as anaerobic phase without stirring, which contributed to rapid P uptake in aerobic phase. The effluent P of 0.91 mg·L^-1 was achieved through denitrifying P removal in anoxic phase. Simultaneous nitrification and denitrification （SND） in aerobic phase contributed 18.0% of TN elimination in R1, much higher than that of R2 （9.8%）. In the post-anoxic phase, microorganisms utilized glycogen as carbon source to drive denitrification, exhibiting denitrification rates （DNRs） of 0.98, 0.84 mg·g-1·h^-1 and 6.62, 9.21 mg·L^-1 of effluent TN in R1 and R2, respectively. Better nitrogen removal efficiency was obtained with anaerobic phase replaced by static phase, and the configuration was further simplified.