(AO)2SBR同步脱氮除磷的研究
Simultaneous nitrogen and phosphorus removal in an anaerobic/aerobic/anoxic/aerobic sequencing batch reactor
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摘要: 以人工配水为研究对象，采用厌氧/好氧/缺氧/好氧交替运行的序批式反应器，研究了（AO）2SBR系统同步脱氮除磷的效果，并结合批式实验讨论了同步脱氮除磷的反应机理。研究结果表明，该系统以厌氧1.5 h、好氧1 h、缺氧3 h、好氧0.5 h的方式运行，在DO=2.5 mg/L，SRT=15 d的条件下，具有良好的脱氮除磷效果，配水中的总氮、总磷、COD和总有机碳的去除率分别为96.26％、99.87%、90.46％和85.57％。批式实验表明，合成的内碳源越多，氨氮的硝化越充分，反硝化除磷越多。Abstract: In this study，experiments were performed by the operating manner of anaerobic/aerobic/anoxic/aerobic in a sequencing batch reactor (SBR) which was fed with synthetic wastewater.The effect of simultaneous nitrogen and phosphorus removal in the system of （AO）2SBR was studied，the mechanism of coinstantaneous nitrogen and phosphorus removal was further discussed combined with small-batch experiments．Under the following conditions:DO=2.5 mg/L，SRT=15 d，the system operated by the manner of 1.5 h anaerobic、1.0 h aerobic、3.0 h anoxic、0.5 h aerobic，had a good removal effect of nitrogen and phosphorus，the removal efficiency of total nitrogen，total phosphorus，COD and TOC for synthetic wastewater was 96.26%，99.87%，90.46%，85.57%，respectively．The result shows that the more amount of inner carbon synthesized and the morequantity of ammonia nitrificated, the higher the removal rate of nitrogen and phosphorus by the smallbatch experiments.
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Key words:
- SBR /
- DO /
- SRT /
- nitrogen and phosphorus removal /
- synthetic wastewater
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