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The potential role of 'Candidatus Microthrix parvicella' in phosphorus removal during sludge bulking in two full-scale enhanced biological phosphorus removal plants
Wang, Juan; Qi, Rong; Liu, Miaomiao; Li, Qian; Bao, Haipeng; Li, Yaming; Wang, Shen; Tandoi, Valter; Yang, Min
2014
Source PublicationWATER SCIENCE AND TECHNOLOGY
ISSN0273-1223
Volume70Issue:2Pages:367-375
AbstractWe investigated the bacterial community compositions and phosphorus removal performance under sludge bulking and non-bulking conditions in two biological wastewater treatment systems (conventional A(2)/O (anaerobic/anoxic/aerobic) and inverted A(2)/O (anoxic/anaerobic/aerobic) processes) receiving the same raw wastewater. Sludge bulking resulted in significant shift in bacterial compositions from Proteobacteria dominance to Actinobacteria dominance, characterized by the significant presence of filamentous 'Candidatus Microthrix parvicella'. Quantitative real-time polymerase chain reaction (PCR) analysis revealed that the relative abundance of 'Candidatus Accumulibacter phosphatis', a key polyphosphate-accumulating organism responsible for phosphorus removal, with respect to 16s rRNA genes of total bacteria was 0.8 and 0.7%, respectively, for the conventional and inverted A(2)/O systems when sludge bulking occurred, which increased to 8.2 and 12.3% during the non-bulking period. However, the total phosphorus removal performance during the bulking period (2-week average: 97 +/- 1 and 96 +/- 1%, respectively) was not adversely affected comparable to that during the non-bulking period (2-week average: 96 +/- 1 and 96 +/- 1%, respectively). Neisser staining revealed the presence of large polyphosphate granules in 'Candidatus Microthrix parvicella', suggesting that this microbial group might have been responsible for phosphorus removal during the sludge bulking period when 'Candidatus Accumulibacter phosphatis' was excluded from the systems.
Department环境水质学国家重点实验室
KeywordBacterial Community 'candidatus Microthrix Parvicella' Ebpr Phosphorus Removal Sludge Bulking
WOS IDWOS:000341182300024
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Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/9610
Collection环境水质学国家重点实验室
Recommended Citation
GB/T 7714
Wang, Juan,Qi, Rong,Liu, Miaomiao,et al. The potential role of 'Candidatus Microthrix parvicella' in phosphorus removal during sludge bulking in two full-scale enhanced biological phosphorus removal plants[J]. WATER SCIENCE AND TECHNOLOGY,2014,70(2):367-375.
APA Wang, Juan.,Qi, Rong.,Liu, Miaomiao.,Li, Qian.,Bao, Haipeng.,...&Yang, Min.(2014).The potential role of 'Candidatus Microthrix parvicella' in phosphorus removal during sludge bulking in two full-scale enhanced biological phosphorus removal plants.WATER SCIENCE AND TECHNOLOGY,70(2),367-375.
MLA Wang, Juan,et al."The potential role of 'Candidatus Microthrix parvicella' in phosphorus removal during sludge bulking in two full-scale enhanced biological phosphorus removal plants".WATER SCIENCE AND TECHNOLOGY 70.2(2014):367-375.
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