Performance and bacterial community composition of volcanic scoria particles (VSP) in a biological aerated filter (BAF) for micro-polluted source water treatment
© 2019 Water Environment Federation.
| Veröffentlicht in: | Water environment research : a research publication of the Water Environment Federation. - 1998. - 91(2019), 9 vom: 05. Sept., Seite 954-967 |
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| Weitere Verfasser: | , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2019
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| Zugriff auf das übergeordnete Werk: | Water environment research : a research publication of the Water Environment Federation |
| Schlagworte: | Journal Article ammonia-oxidizing bacteria bacterial community structure biological aerated filter micro-polluted source water temperature volcanic scoria particles |
| Zusammenfassung: | © 2019 Water Environment Federation. A laboratory-scale biological aerated filter (BAF), using volcanic scoria particles (VSP), was used for treating micro-polluted source water. The system reached a steady-state stage and performed better at removing pollutants. In steady-state stage, the effluent ammonia ( NH 4 + - N ) and chemical oxygen demand (COD) were consistently maintained below 0.3 and 3 mg/L, respectively. Both the NH 4 + - N and COD removal efficiencies decreased with shorter hydraulic retention time (HRT). The effluent NH 4 + - N and COD exceeded health standards at 15 min of HRT. Although performance was relatively poor for VSP-BAF at low temperature, the NH 4 + - N removal still achieved the drinking water quality standard. The influences of influent NH 4 + - N and COD concentration changes were similar to that of temperature. A better performance was observed in NH 4 + - N removal under higher influent NH 4 + - N concentrations. In contrast, the effluent COD was more than 3 mg/L when the influent COD concentrations increased to about 9 mg/L. The phylogenetic and cluster analyses indicated that the effect of HRT on bacteria community structure was higher than that of temperature, while the ammonia-oxidizing bacteria (AOB) are sensitive to temperature. The main phyla identified in total bacteria communities were Proteobacteria, Bacteroidetes, Firmicutes, and Nitrospirae. The main AOB were Nitrosomonadales and an uncultured ammonia-oxidizing bacterium. PRACTITIONER POINTS: The BAF using VSP obtained a good performance for treating micro-polluted source water. The influence of HRT on the system was more significant than that of temperature. The system is resistant to NH 4 + - N concentration shocks while is unable to withstand the COD increasing. The effect of HRT on bacteria community structure was significantly higher than that of temperature |
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| Beschreibung: | Date Completed 11.10.2019 Date Revised 11.10.2019 published: Print-Electronic GENBANK: KP717508.1, EF700397.1, LC029408.1, JQ723677.1, JN679174.1, KC588303.1, GQ246753.1, FJ263934.1, JX843913.2, EF636170.1, DQ452585.1, KC735794.1, KP161408.1, HQ202472.1, KP161407.1, KM216490.1, KJ994818.1, KC735999.1 Citation Status MEDLINE |
| ISSN: | 1554-7531 |
| DOI: | 10.1002/wer.1139 |