Denitrifying phosphorus removal for simultaneous nitrogen and phosphorus removal from wastewater with low C/N ratios and microbial community structure analysis
| Autor: | Wenyi Dong, Ji Li, Feiyun Sun, Ming-Fei Shao, Xiao-mei Lv, Chao-lin Li |
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| Rok vydání: | 2014 |
| Předmět: |
0301 basic medicine
biology Phosphorus 030106 microbiology Environmental engineering chemistry.chemical_element Ocean Engineering biology.organism_classification Pollution Nitrogen 03 medical and health sciences Denitrifying bacteria chemistry.chemical_compound Enhanced biological phosphorus removal Microbial population biology chemistry Nitrate Wastewater Environmental chemistry Bacteria Water Science and Technology |
| Zdroj: | Desalination and Water Treatment. 57:1890-1899 |
| ISSN: | 1944-3986 1944-3994 |
| DOI: | 10.1080/19443994.2014.979235 |
| Popis: | Simultaneous nitrogen and phosphorus removal by denitrifying phosphorus accumulating organisms (DPAO) from domestic wastewater with a low C/N was studied in a pilot-scale A2N/BAF process. Through long-term investigation for more than 820 d, it was evidenced that the A2N/BAF performed well on COD, -N and TP removals with efficiencies averaged at 84, 97 and 90%, respectively. Phosphorus removal in the system was mainly attributed to the function of DPAO through the analysis of phosphorus uptake and nitrate consumption, and the relative phosphorus uptake activity of DPAO/PAO was approximately 70.3%. Moreover, the microbial diversity and dominant bacterial community in the A2N/BAF was investigated with high-throughput sequencing. It was revealed that the A2N/BAF sludge had comparatively less diversity than seed sludge and shared several common dominant taxonomic bacteria with seed sludge, while long-term operation also shifted the microbial community. The A2N/BAF system was feasible for the treatment ... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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