Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.1016/S0043-1354(99)00123-2 |
| Titel (primär) | Performance and microbial structure of a nitrifying fluidized-bed reactor |
| Autor | Kloep, F.; Röske, I.; Neu, T.R. |
| Quelle | Water Research |
| Erscheinungsjahr | 2000 |
| Department | FLOEK; GM |
| Band/Volume | 34 |
| Heft | 1 |
| Seite von | 311 |
| Seite bis | 319 |
| Sprache | englisch |
| Keywords | biofilm; confocal laser scanning microscopy; fluidized bed reactor; fluorescent in situ hybridization; nitrifying bacteria; wastewater |
| Abstract | The performance and composition of the microbial community have been examined in a nitrifying fluidized-bed biofilm reactor for wastewater treatment arranged as the ultimate treatment step subsequent to BOD- and biological P-elimination. The microbial composition was analyzed by means of rRNA-targeted oligonucleotide probes. An NH4+-N elimination of more than 95% at influent concentrations of up to 80 mg NH4+-N l-1 was observed during a period with 75% carrier material (v/v) and a hydraulic retention time of 1.8 h. Using a confocal laser scanning microscope it was found that the biofilm structure on the carrier material (tubes of 5 mm length) was mainly influenced by the loss processes affecting the biofilm. The microbial composition, using fluorescent in situ hybridization, was dominated by the beta-group of the Proteobacteria (up to 55% of the DAPI cell number). The ammonia-oxidizing bacteria, a subgroup of the beta-Proteobacteria, were characterized by their occurrence in clusters. Using different probes for ammonia-oxidizing bacteria, a shift in the population structure within the experimental period was observed. Nitrobacter could not be detected with probes such as NIT1, NIT2 and NIT3. |
| Kloep, F., Röske, I., Neu, T.R. (2000): Performance and microbial structure of a nitrifying fluidized-bed reactor Water Res. 34 (1), 311 - 319 10.1016/S0043-1354(99)00123-2 |
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