Degradation of dimethylamine and three tertiary amines by activated sludge and isolated strains
作者： Lin Wang , Yongmei Li
DOI: 10.1002/JCTB.4379
关键词:
摘要: BACKGROUND N-nitrosodimethylamine (NDMA) is an emerging disinfection byproduct. The effective and economical method to control NDMA remove its potential precursors. In this study, experiments were conducted investigate the removals of four typical precursors (dimethylamine (DMA), trimethylamine (TMA), dimethylformamide (DMFA) dimethylaminobenzene (DMAB)) by activated sludge isolated strains. RESULTS Batch indicated that specific degradation rates follow order DMA > TMA DMFA DMAB; under different redox conditions, aerobic anoxic anaerobic. anaerobic–anoxic–aerobic system, optimal hydraulic retention time (HRT) (SRT) 10 h 20 days, respectively, for both nutrients. Bacterial strains from identified based on 16S rDNA sequence analysis. A pH 8–9 temperature 30–35°C removal strains. Degradation fitted well Haldane model. CONCLUSION These results are helpful knowledge during treatment processes. © 2014 Society Chemical Industry
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