Mechanism of simultaneous nitrification and denitrification in a membrane bioreactor and influencing factors
- Received Date: 25/09/2009
- Accepted Date: 18/07/2009
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Key words:
- membrane bioreactor(MBR) /
- simultaneous nitrification and denitrification (SND) /
- dissolved oxygen (DO) /
- carbon/nitrogen (C/N) /
- organic loading
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).