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论文类型： 期刊论文

发表时间： 2010-03-15

发表刊物： JOURNAL OF HAZARDOUS MATERIALS

收录刊物： SCIE、EI、PubMed、Scopus

卷号： 175

期号： 1-3

页面范围： 551-557

ISSN号： 0304-3894

关键字： Sequencing batch moving bed membrane bioreactor; Nitrogen removal; Phosphorus removal; Phosphorus accumulating organisms (PAOs); Specific phosphorus uptake rate test

摘要： Biological nutrient removal (BNR) was investigated in a sequencing batch membrane bioreactor which used carriers instead of activated sludge named a sequencing batch moving bed membrane bioreactor (SBMBMBR). The SBMBMBR performed well on carbon and nitrogen removal at different COD/TN ratios. COD, TN and ammonium nitrogen removal efficiencies averaged at 93.5%, 82.6% and 95.6%, respectively. The TP removal was closely correlated with the length of anaerobic phase and aerobic phase. When anaerobic time and aerobic time were both 2 h, the average TP removal efficiency reached to 84.1% at influent TP concentration of 12.4 mg/L, DO in aerobic phase was an important factor affecting nutrient removal, and the optimal DO was about 3 mg/L There was a small amount of denitrifying phosphorus accumulating organisms (DPAOs) in SBMBMBR which resulted from the anoxic microenvironment existed in the inner of the biofilm. Fluorescence in situ hybridization (FISH) results of microbes showed the composition and spatial structure of the microbial community in the reactor. Furthermore, sequencing batch mode operation was propitious to retard membrane fouling. (C) 2009 Elsevier B.V. All rights reserved.