不同进水条件对SBR工艺脱氮除磷效能的影响
Environmental Science & Technology(2011)
Abstract
采用人工配水,研究进水在不同pH值,碳源类型,碳氮比条件下,厌氧/好氧/缺氧(A/O/A)SBR工艺对生物法脱氮除磷效能的影响。结果表明:不同的进水条件对反应器的影响较大,当pH值为7.5,乙酸钠为碳源,碳氮比为1.4时,反应器运行效果最佳,系统对PO43--P,NH4+-N的去除率分别达到97.28%,99.5%。NO3--N,NO2--N的出水浓度平均为2.8 mg/L,0.9 mg/L。进水条件良好时,A/O/A SBR反应器适合反硝化聚磷菌的富集,解决了反硝化菌和聚磷菌世代周期不同,争夺碳源等矛盾,能够很好的实现同步脱氮除磷。
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Key words
SBR,A/O/A,nitrogen and phosphorus removal,denitrifying polyphosphate-accumulating organisms
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