膜生物反应器中同步硝化反硝化机制及影响因子探讨
Mechanism of simultaneous nitrification and denitrification in a membrane bioreactor and influencing factors
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摘要: 通过膜生物反应器的连续运行,研究了DO、C/N比、F/M和pH等影响因子对膜生物反应器同步硝化反硝化的影响,并对其影响机制进行了分析。实验结果表明,DO、C/N比、F/M和pH是同步硝化反硝化效果的重要影响因子;膜生物反应器中pH值的变化在7左右,DO为0.8 mg/L,C/N比为10, F/M在0.15~0.36 kg COD/(kg MLSS·d)之间时能发生比较好的同步硝化反硝化现象。Abstract: In the continuous running of MBR, the effects of DO, C/N, F/M and pH on the simultaneous nitrification and denitrification (SND) were studied, and the SND mechanism was analyzed. The results indicated that the optimal technological conditions for SND process in the SMBR were pH 7,DO of 0.8 mg/L, C/N of 10,and F/M of 0.15~0.36 kg COD/(kg MLSS·d).
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